Revision 42231
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/backup/DefaultBackupGeneratorFactory.java | ||
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/** |
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* gvSIG. Desktop Geographic Information System. |
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* |
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* Copyright (C) 2007-2013 gvSIG Association. |
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* |
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* This program is free software; you can redistribute it and/or |
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| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
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* of the License, or (at your option) any later version. |
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* |
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| 11 |
* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 |
* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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| 17 |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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* For any additional information, do not hesitate to contact us |
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* at info AT gvsig.com, or visit our website www.gvsig.com. |
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*/ |
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package org.gvsig.tools.backup; |
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|
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/* gvSIG. Geographic Information System of the Valencian Government |
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* |
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* Copyright (C) 2007-2008 Infrastructures and Transports Department |
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* of the Valencian Government (CIT) |
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* |
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* This program is free software; you can redistribute it and/or |
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| 32 |
* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 39 |
* GNU General Public License for more details. |
|
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* |
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* You should have received a copy of the GNU General Public License |
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| 42 |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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*/ |
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/** |
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* <p>Factory that gets a {@link DefaultBackupGenerator DefaultBackupGenerator} as a particular version of
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* backup generator.</p> |
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* |
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* @author Jose Ignacio Yarza (jiyarza@opensistemas.com) |
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es) |
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*/ |
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public class DefaultBackupGeneratorFactory extends BackupGeneratorFactory {
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/* |
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* (non-Javadoc) |
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* @see com.iver.utiles.backup.BackupGeneratorFactory#getBackupGenerator() |
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*/ |
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public BackupGenerator getBackupGenerator() {
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return new DefaultBackupGenerator(); |
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} |
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} |
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| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/backup/BackupGenerator.java | ||
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| 1 |
/** |
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* gvSIG. Desktop Geographic Information System. |
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* |
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* Copyright (C) 2007-2013 gvSIG Association. |
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* |
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* This program is free software; you can redistribute it and/or |
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| 7 |
* modify it under the terms of the GNU General Public License |
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| 8 |
* as published by the Free Software Foundation; either version 3 |
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| 9 |
* of the License, or (at your option) any later version. |
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| 10 |
* |
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| 11 |
* This program is distributed in the hope that it will be useful, |
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| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
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| 15 |
* |
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| 16 |
* You should have received a copy of the GNU General Public License |
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| 17 |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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* For any additional information, do not hesitate to contact us |
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* at info AT gvsig.com, or visit our website www.gvsig.com. |
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*/ |
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package org.gvsig.tools.backup; |
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|
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/* gvSIG. Geographic Information System of the Valencian Government |
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* |
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* Copyright (C) 2007-2008 Infrastructures and Transports Department |
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* of the Valencian Government (CIT) |
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* |
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| 31 |
* This program is free software; you can redistribute it and/or |
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| 32 |
* modify it under the terms of the GNU General Public License |
|
| 33 |
* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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| 37 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 38 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 39 |
* GNU General Public License for more details. |
|
| 40 |
* |
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* You should have received a copy of the GNU General Public License |
|
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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*/ |
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import java.io.File; |
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import org.gvsig.tools.backup.exceptions.BackupException; |
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/** |
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* <p>A tagging interface that all file backups must implement.</p> |
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* |
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* @author Jose Ignacio Yarza (jiyarza@opensistemas.com) |
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es) |
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*/ |
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public interface BackupGenerator {
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/** |
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* <p>Performs a backup of <code>source</code>.</p> |
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* |
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* @param source the source file |
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*/ |
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public void backup(File source) throws BackupException; |
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} |
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| 0 | 67 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/backup/DefaultBackupGenerator.java | ||
|---|---|---|
| 1 |
/** |
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| 2 |
* gvSIG. Desktop Geographic Information System. |
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* |
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* Copyright (C) 2007-2013 gvSIG Association. |
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* |
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* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
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* |
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| 11 |
* This program is distributed in the hope that it will be useful, |
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| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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| 17 |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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* For any additional information, do not hesitate to contact us |
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* at info AT gvsig.com, or visit our website www.gvsig.com. |
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*/ |
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package org.gvsig.tools.backup; |
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|
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/* gvSIG. Geographic Information System of the Valencian Government |
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* |
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* Copyright (C) 2007-2008 Infrastructures and Transports Department |
|
| 29 |
* of the Valencian Government (CIT) |
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* |
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| 31 |
* This program is free software; you can redistribute it and/or |
|
| 32 |
* modify it under the terms of the GNU General Public License |
|
| 33 |
* as published by the Free Software Foundation; either version 2 |
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| 34 |
* of the License, or (at your option) any later version. |
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* |
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| 36 |
* This program is distributed in the hope that it will be useful, |
|
| 37 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 38 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 39 |
* GNU General Public License for more details. |
|
| 40 |
* |
|
| 41 |
* You should have received a copy of the GNU General Public License |
|
| 42 |
* along with this program; if not, write to the Free Software |
|
| 43 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301, USA. |
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* |
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*/ |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileOutputStream; |
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import java.nio.channels.FileChannel; |
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import org.gvsig.tools.backup.exceptions.BackupException; |
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/** |
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* <p>Performs a backup of a file, into another file at the same path (directory), with the file extension |
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* changed to <i>.bak</i>.</p> |
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* |
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* @author Jose Ignacio Yarza (jiyarza@opensistemas.com) |
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es) |
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*/ |
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public class DefaultBackupGenerator implements BackupGenerator {
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/* |
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* (non-Javadoc) |
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* @see com.iver.utiles.backup.BackupGenerator#backup(java.io.File) |
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*/ |
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public void backup(File source) throws BackupException {
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try {
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int index = source.getAbsolutePath().lastIndexOf(".");
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if (index == -1) |
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return; |
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File dest = new File(source.getAbsolutePath().substring(0, index) + ".bak"); |
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// Create channel on the source |
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FileChannel srcChannel = new FileInputStream(source).getChannel(); |
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// Create channel on the destination |
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FileChannel dstChannel = new FileOutputStream(dest).getChannel(); |
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// Copy file contents from source to destination |
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dstChannel.transferFrom(srcChannel, 0, srcChannel.size()); |
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// Close the channels |
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srcChannel.close(); |
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dstChannel.close(); |
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} catch (Exception ex) {
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throw new BackupException(ex.getMessage(), ex, source); |
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} |
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} |
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} |
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| 0 | 94 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/backup/exceptions/BackupException.java | ||
|---|---|---|
| 1 |
/** |
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* gvSIG. Desktop Geographic Information System. |
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* |
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| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
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* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
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package org.gvsig.tools.backup.exceptions; |
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|
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/* gvSIG. Geographic Information System of the Valencian Government |
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* |
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| 28 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department |
|
| 29 |
* of the Valencian Government (CIT) |
|
| 30 |
* |
|
| 31 |
* This program is free software; you can redistribute it and/or |
|
| 32 |
* modify it under the terms of the GNU General Public License |
|
| 33 |
* as published by the Free Software Foundation; either version 2 |
|
| 34 |
* of the License, or (at your option) any later version. |
|
| 35 |
* |
|
| 36 |
* This program is distributed in the hope that it will be useful, |
|
| 37 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 38 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 39 |
* GNU General Public License for more details. |
|
| 40 |
* |
|
| 41 |
* You should have received a copy of the GNU General Public License |
|
| 42 |
* along with this program; if not, write to the Free Software |
|
| 43 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
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* MA 02110-1301, USA. |
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* |
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*/ |
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|
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import java.io.File; |
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|
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/** |
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* <p>Exception to report that a backup process has failed.</p> |
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* |
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* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es) |
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*/ |
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public class BackupException extends Exception {
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private static final long serialVersionUID = -2846421984617208883L; |
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|
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/** |
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* <p>The source file to be backup.</p> |
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*/ |
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protected File source; |
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|
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/** |
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* <p>Constructs a new backup exception with the specified detail message and cause.</p> |
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* |
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* @param message the detail message (which is saved for later retrieval by the <code>getMessage()</code> method). |
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* @param cause the cause (which is saved for later retrieval by the <code>getCause()</code> method). (A <code>null</code> |
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* value is permitted, and indicates that the cause is nonexistent or unknown.) |
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* @param source the file from that was going to be done a backup |
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* |
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* @see Exception#Exception(String, Throwable) |
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*/ |
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public BackupException(String message, Throwable cause, File source) {
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super(message, cause); |
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this.source = source; |
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} |
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|
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/** |
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* <p>Gets the source file to be backup.</p> |
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* |
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* @return the source file |
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*/ |
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public File getSource() {
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return source; |
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} |
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} |
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| 0 | 87 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/backup/BackupGeneratorFactory.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
package org.gvsig.tools.backup; |
|
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|
|
| 26 |
/* gvSIG. Geographic Information System of the Valencian Government |
|
| 27 |
* |
|
| 28 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department |
|
| 29 |
* of the Valencian Government (CIT) |
|
| 30 |
* |
|
| 31 |
* This program is free software; you can redistribute it and/or |
|
| 32 |
* modify it under the terms of the GNU General Public License |
|
| 33 |
* as published by the Free Software Foundation; either version 2 |
|
| 34 |
* of the License, or (at your option) any later version. |
|
| 35 |
* |
|
| 36 |
* This program is distributed in the hope that it will be useful, |
|
| 37 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 38 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 39 |
* GNU General Public License for more details. |
|
| 40 |
* |
|
| 41 |
* You should have received a copy of the GNU General Public License |
|
| 42 |
* along with this program; if not, write to the Free Software |
|
| 43 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 44 |
* MA 02110-1301, USA. |
|
| 45 |
* |
|
| 46 |
*/ |
|
| 47 |
|
|
| 48 |
/** |
|
| 49 |
* <p>Generic factory that creates a {@link BackupGenerator BackupGenerator} that performs a particular
|
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| 50 |
* kind of backup.</p> |
|
| 51 |
* |
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| 52 |
* @author Jose Ignacio Yarza (jiyarza@opensistemas.com) |
|
| 53 |
* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es) |
|
| 54 |
*/ |
|
| 55 |
public abstract class BackupGeneratorFactory {
|
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| 56 |
/** |
|
| 57 |
* <p>Gets an instance of a backup generator that performs a particular kind of backup.</p> |
|
| 58 |
* |
|
| 59 |
* @return an instance of a backup generator that performs a particular kind of backup |
|
| 60 |
*/ |
|
| 61 |
public abstract BackupGenerator getBackupGenerator(); |
|
| 62 |
} |
|
| 0 | 63 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/tools/IverUtilesLibrary.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
package org.gvsig.tools; |
|
| 25 |
|
|
| 26 |
import org.gvsig.tools.library.AbstractLibrary; |
|
| 27 |
import org.gvsig.tools.library.LibraryException; |
|
| 28 |
import org.gvsig.utils.swing.jcomboServer.ServerData; |
|
| 29 |
|
|
| 30 |
public class IverUtilesLibrary extends AbstractLibrary {
|
|
| 31 |
|
|
| 32 |
@Override |
|
| 33 |
public void doRegistration() {
|
|
| 34 |
registerAsAPI(IverUtilesLibrary.class); |
|
| 35 |
} |
|
| 36 |
|
|
| 37 |
@Override |
|
| 38 |
protected void doInitialize() throws LibraryException {
|
|
| 39 |
// Nothing to do |
|
| 40 |
} |
|
| 41 |
|
|
| 42 |
@Override |
|
| 43 |
protected void doPostInitialize() throws LibraryException {
|
|
| 44 |
ServerData.registerPersistence(); |
|
| 45 |
} |
|
| 46 |
} |
|
| 0 | 47 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/utils/SymbolSet.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
package org.gvsig.utils; |
|
| 25 |
|
|
| 26 |
/** |
|
| 27 |
* Conjunto de s?mbolos |
|
| 28 |
* |
|
| 29 |
* @author Fernando Gonz?lez Cort?s |
|
| 30 |
*/ |
|
| 31 |
public interface SymbolSet {
|
|
| 32 |
/** |
|
| 33 |
* Devuelve true si el caracter c est? en el conjunto |
|
| 34 |
* |
|
| 35 |
* @param c caracter |
|
| 36 |
* |
|
| 37 |
* @return true si est? en el conjunto y false en caso contrario |
|
| 38 |
*/ |
|
| 39 |
public boolean contains(char c); |
|
| 40 |
} |
|
| 0 | 41 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/utils/bigfile/BigByteBuffer.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
package org.gvsig.utils.bigfile; |
|
| 25 |
|
|
| 26 |
import java.io.IOException; |
|
| 27 |
import java.nio.Buffer; |
|
| 28 |
import java.nio.ByteBuffer; |
|
| 29 |
import java.nio.ByteOrder; |
|
| 30 |
import java.nio.CharBuffer; |
|
| 31 |
import java.nio.DoubleBuffer; |
|
| 32 |
import java.nio.FloatBuffer; |
|
| 33 |
import java.nio.IntBuffer; |
|
| 34 |
import java.nio.LongBuffer; |
|
| 35 |
import java.nio.MappedByteBuffer; |
|
| 36 |
import java.nio.ShortBuffer; |
|
| 37 |
import java.nio.channels.FileChannel; |
|
| 38 |
|
|
| 39 |
/** |
|
| 40 |
* @author Fjp |
|
| 41 |
* |
|
| 42 |
* Clase para trabajar con ficheros grandes. Mapea solo un trozo |
|
| 43 |
* de fichero en memoria, y cuando intentas acceder fuera de esa |
|
| 44 |
* zona, se ocupa de leer autom?ticamente el trozo que le falta. |
|
| 45 |
*/ |
|
| 46 |
public class BigByteBuffer {
|
|
| 47 |
|
|
| 48 |
private static long DEFAULT_SIZE = 50*1024*1024; // 50 Megas m?ximo |
|
| 49 |
|
|
| 50 |
MappedByteBuffer bb; |
|
| 51 |
FileChannel fc; |
|
| 52 |
long minAbs, maxAbs, posAbs; |
|
| 53 |
int minRel, maxRel, posRel; |
|
| 54 |
long sizeChunk, amountMem; |
|
| 55 |
long fileSize; |
|
| 56 |
FileChannel.MapMode mode; |
|
| 57 |
|
|
| 58 |
/** |
|
| 59 |
* Revisa la posici?n absoluta, y si hace falta, carga el buffer |
|
| 60 |
* con la parte de fichero que toca. |
|
| 61 |
* @throws IOException |
|
| 62 |
*/ |
|
| 63 |
private void prepareBuffer(long posActual, int numBytesToRead) |
|
| 64 |
{
|
|
| 65 |
long desiredPos = posActual + numBytesToRead; |
|
| 66 |
if ((desiredPos > maxAbs) || (posActual < minAbs)) |
|
| 67 |
{
|
|
| 68 |
// Quiero leer fuera: |
|
| 69 |
sizeChunk = Math.min(fileSize-posActual, amountMem); |
|
| 70 |
try {
|
|
| 71 |
ByteOrder lastOrder = bb.order(); |
|
| 72 |
bb = fc.map(mode, posActual, sizeChunk); |
|
| 73 |
minAbs = posActual; |
|
| 74 |
maxAbs = sizeChunk + posActual; |
|
| 75 |
bb.order(lastOrder); |
|
| 76 |
// System.out.println("BigByteBuffer: min=" + minAbs
|
|
| 77 |
// + " maxAbs=" + maxAbs + " posAbs = " + posAbs); |
|
| 78 |
|
|
| 79 |
} catch (IOException e) {
|
|
| 80 |
// TODO Auto-generated catch block |
|
| 81 |
e.printStackTrace(); |
|
| 82 |
} |
|
| 83 |
|
|
| 84 |
} |
|
| 85 |
// Dejamos posAbs apuntando a donde va a quedar |
|
| 86 |
// "a priori", antes de leer de verdad, que se hace |
|
| 87 |
// al salir de esta funci?n. |
|
| 88 |
posAbs = desiredPos; |
|
| 89 |
|
|
| 90 |
} |
|
| 91 |
|
|
| 92 |
public BigByteBuffer(FileChannel fc, FileChannel.MapMode mode, long amountMem) throws IOException |
|
| 93 |
{
|
|
| 94 |
this.amountMem = amountMem; |
|
| 95 |
this.fc = fc; |
|
| 96 |
this.fileSize = fc.size(); |
|
| 97 |
this.mode = mode; |
|
| 98 |
sizeChunk = Math.min(fc.size(), amountMem); |
|
| 99 |
bb = fc.map(mode, 0L, sizeChunk); |
|
| 100 |
minAbs = 0; |
|
| 101 |
maxAbs = sizeChunk; |
|
| 102 |
} |
|
| 103 |
public BigByteBuffer(FileChannel fc, FileChannel.MapMode mode) throws IOException |
|
| 104 |
{
|
|
| 105 |
this.amountMem = DEFAULT_SIZE; |
|
| 106 |
this.fc = fc; |
|
| 107 |
this.fileSize = fc.size(); |
|
| 108 |
this.mode = mode; |
|
| 109 |
sizeChunk = Math.min(fc.size(), amountMem); |
|
| 110 |
bb = fc.map(mode, 0L, sizeChunk); |
|
| 111 |
minAbs = 0; |
|
| 112 |
maxAbs = sizeChunk; |
|
| 113 |
} |
|
| 114 |
|
|
| 115 |
|
|
| 116 |
public synchronized byte get() {
|
|
| 117 |
prepareBuffer(posAbs,1); |
|
| 118 |
return bb.get(); |
|
| 119 |
} |
|
| 120 |
public synchronized ByteBuffer get(byte[] dst) |
|
| 121 |
{
|
|
| 122 |
prepareBuffer(posAbs, dst.length); |
|
| 123 |
return bb.get(dst); |
|
| 124 |
} |
|
| 125 |
|
|
| 126 |
public synchronized char getChar() {
|
|
| 127 |
prepareBuffer(posAbs,2); |
|
| 128 |
return bb.getChar(); |
|
| 129 |
} |
|
| 130 |
|
|
| 131 |
public synchronized double getDouble() {
|
|
| 132 |
prepareBuffer(posAbs,8); |
|
| 133 |
return bb.getDouble(); |
|
| 134 |
} |
|
| 135 |
|
|
| 136 |
public synchronized float getFloat() {
|
|
| 137 |
prepareBuffer(posAbs,4); |
|
| 138 |
return bb.getFloat(); |
|
| 139 |
} |
|
| 140 |
|
|
| 141 |
public synchronized int getInt() {
|
|
| 142 |
prepareBuffer(posAbs,4); |
|
| 143 |
return bb.getInt(); |
|
| 144 |
} |
|
| 145 |
|
|
| 146 |
public synchronized long getLong() {
|
|
| 147 |
prepareBuffer(posAbs,8); |
|
| 148 |
return bb.getLong(); |
|
| 149 |
} |
|
| 150 |
|
|
| 151 |
public synchronized short getShort() {
|
|
| 152 |
prepareBuffer(posAbs,2); |
|
| 153 |
return bb.getShort(); |
|
| 154 |
} |
|
| 155 |
|
|
| 156 |
public boolean isDirect() {
|
|
| 157 |
return bb.isDirect(); |
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
public synchronized byte get(int index) {
|
|
| 161 |
prepareBuffer(index,1); |
|
| 162 |
return bb.get(index - (int) minAbs); |
|
| 163 |
} |
|
| 164 |
|
|
| 165 |
public synchronized char getChar(int index) {
|
|
| 166 |
prepareBuffer(index,2); |
|
| 167 |
return bb.getChar(index - (int) minAbs); |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
public synchronized double getDouble(int index) {
|
|
| 171 |
prepareBuffer(index,8); |
|
| 172 |
return bb.getDouble(index - (int) minAbs); |
|
| 173 |
} |
|
| 174 |
|
|
| 175 |
public synchronized float getFloat(int index) {
|
|
| 176 |
prepareBuffer(index,4); |
|
| 177 |
return bb.getFloat(index - (int) minAbs); |
|
| 178 |
} |
|
| 179 |
|
|
| 180 |
public synchronized int getInt(int index) {
|
|
| 181 |
prepareBuffer(index,4); |
|
| 182 |
return bb.getInt(index - (int) minAbs); |
|
| 183 |
} |
|
| 184 |
|
|
| 185 |
public synchronized long getLong(int index) {
|
|
| 186 |
prepareBuffer(index,8); |
|
| 187 |
return bb.getLong(index - (int) minAbs); |
|
| 188 |
} |
|
| 189 |
|
|
| 190 |
public synchronized short getShort(int index) {
|
|
| 191 |
prepareBuffer(index,2); |
|
| 192 |
return bb.getShort(index - (int) minAbs); |
|
| 193 |
} |
|
| 194 |
|
|
| 195 |
public ByteBuffer asReadOnlyBuffer() {
|
|
| 196 |
return bb.asReadOnlyBuffer(); |
|
| 197 |
} |
|
| 198 |
|
|
| 199 |
public ByteBuffer compact() {
|
|
| 200 |
return bb.compact(); |
|
| 201 |
} |
|
| 202 |
|
|
| 203 |
public ByteBuffer duplicate() {
|
|
| 204 |
return bb.duplicate(); |
|
| 205 |
} |
|
| 206 |
|
|
| 207 |
public ByteBuffer slice() {
|
|
| 208 |
return bb.slice(); |
|
| 209 |
} |
|
| 210 |
|
|
| 211 |
public synchronized ByteBuffer put(byte b) {
|
|
| 212 |
prepareBuffer(posAbs,1); |
|
| 213 |
return bb.put(b); |
|
| 214 |
} |
|
| 215 |
|
|
| 216 |
public synchronized ByteBuffer putChar(char value) {
|
|
| 217 |
prepareBuffer(posAbs,2); |
|
| 218 |
return bb.putChar(value); |
|
| 219 |
} |
|
| 220 |
|
|
| 221 |
public synchronized ByteBuffer putDouble(double value) {
|
|
| 222 |
prepareBuffer(posAbs,8); |
|
| 223 |
return bb.putDouble(value); |
|
| 224 |
} |
|
| 225 |
|
|
| 226 |
public synchronized ByteBuffer putFloat(float value) {
|
|
| 227 |
prepareBuffer(posAbs,4); |
|
| 228 |
return bb.putFloat(value); |
|
| 229 |
} |
|
| 230 |
|
|
| 231 |
public synchronized ByteBuffer putInt(int value) {
|
|
| 232 |
prepareBuffer(posAbs,4); |
|
| 233 |
return bb.putInt(value); |
|
| 234 |
} |
|
| 235 |
|
|
| 236 |
public synchronized ByteBuffer put(int index, byte b) {
|
|
| 237 |
prepareBuffer(index,1); |
|
| 238 |
return bb.put(index- (int) minAbs, b); |
|
| 239 |
} |
|
| 240 |
|
|
| 241 |
public synchronized ByteBuffer putChar(int index, char value) {
|
|
| 242 |
prepareBuffer(index,2); |
|
| 243 |
return bb.putChar(index- (int) minAbs, value); |
|
| 244 |
} |
|
| 245 |
|
|
| 246 |
public synchronized ByteBuffer putDouble(int index, double value) {
|
|
| 247 |
prepareBuffer(index,8); |
|
| 248 |
return bb.putDouble(index- (int) minAbs, value); |
|
| 249 |
} |
|
| 250 |
|
|
| 251 |
public synchronized ByteBuffer putFloat(int index, float value) {
|
|
| 252 |
prepareBuffer(index,4); |
|
| 253 |
return bb.putFloat(index- (int) minAbs, value); |
|
| 254 |
} |
|
| 255 |
|
|
| 256 |
public synchronized ByteBuffer putInt(int index, int value) {
|
|
| 257 |
prepareBuffer(index,4); |
|
| 258 |
return bb.putInt(index- (int) minAbs, value); |
|
| 259 |
} |
|
| 260 |
|
|
| 261 |
public synchronized ByteBuffer putLong(int index, long value) {
|
|
| 262 |
prepareBuffer(index,8); |
|
| 263 |
return bb.putLong(index- (int) minAbs, value); |
|
| 264 |
} |
|
| 265 |
|
|
| 266 |
public synchronized ByteBuffer putShort(int index, short value) {
|
|
| 267 |
prepareBuffer(index,2); |
|
| 268 |
return bb.putShort(index- (int) minAbs, value); |
|
| 269 |
} |
|
| 270 |
|
|
| 271 |
public synchronized ByteBuffer putLong(long value) {
|
|
| 272 |
prepareBuffer(posAbs,8); |
|
| 273 |
return bb.putLong(value); |
|
| 274 |
} |
|
| 275 |
|
|
| 276 |
public synchronized ByteBuffer putShort(short value) {
|
|
| 277 |
prepareBuffer(posAbs,2); |
|
| 278 |
return bb.putShort(value); |
|
| 279 |
} |
|
| 280 |
|
|
| 281 |
public CharBuffer asCharBuffer() {
|
|
| 282 |
return bb.asCharBuffer(); |
|
| 283 |
} |
|
| 284 |
|
|
| 285 |
public DoubleBuffer asDoubleBuffer() {
|
|
| 286 |
return bb.asDoubleBuffer(); |
|
| 287 |
} |
|
| 288 |
|
|
| 289 |
public FloatBuffer asFloatBuffer() {
|
|
| 290 |
return bb.asFloatBuffer(); |
|
| 291 |
} |
|
| 292 |
|
|
| 293 |
public IntBuffer asIntBuffer() {
|
|
| 294 |
return bb.asIntBuffer(); |
|
| 295 |
} |
|
| 296 |
|
|
| 297 |
public LongBuffer asLongBuffer() {
|
|
| 298 |
return bb.asLongBuffer(); |
|
| 299 |
} |
|
| 300 |
|
|
| 301 |
public ShortBuffer asShortBuffer() {
|
|
| 302 |
return bb.asShortBuffer(); |
|
| 303 |
} |
|
| 304 |
|
|
| 305 |
public boolean isReadOnly() {
|
|
| 306 |
return bb.isReadOnly(); |
|
| 307 |
} |
|
| 308 |
|
|
| 309 |
public final ByteOrder order() |
|
| 310 |
{
|
|
| 311 |
return bb.order(); |
|
| 312 |
} |
|
| 313 |
|
|
| 314 |
public final ByteBuffer order(ByteOrder bo) |
|
| 315 |
{
|
|
| 316 |
return bb.order(bo); |
|
| 317 |
} |
|
| 318 |
public final long position() |
|
| 319 |
{
|
|
| 320 |
return posAbs; |
|
| 321 |
} |
|
| 322 |
|
|
| 323 |
public synchronized final Buffer position(long newPosition) |
|
| 324 |
{
|
|
| 325 |
prepareBuffer(newPosition,0); |
|
| 326 |
int relPos = (int) (newPosition - minAbs); |
|
| 327 |
// System.out.println("Position=" + newPosition);
|
|
| 328 |
return bb.position(relPos); |
|
| 329 |
} |
|
| 330 |
|
|
| 331 |
} |
|
| 0 | 332 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/utils/bigfile/TestBigByteBuffer.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
/* CVS MESSAGES: |
|
| 25 |
* |
|
| 26 |
* $Id: TestBigByteBuffer.java 29631 2009-06-29 16:56:19Z jpiera $ |
|
| 27 |
* $Log$ |
|
| 28 |
* Revision 1.3 2006-11-06 07:29:59 jaume |
|
| 29 |
* organize imports |
|
| 30 |
* |
|
| 31 |
* Revision 1.2 2006/05/12 12:40:29 fjp |
|
| 32 |
* Driver thread-safe. Se evitan errores aleatorios que aparec?an a veces. |
|
| 33 |
* |
|
| 34 |
* Revision 1.1 2006/01/18 13:01:08 fjp |
|
| 35 |
* BigByteBuffer2 que usa solo 8K y es adecuado para los ?ndices espaciales |
|
| 36 |
* |
|
| 37 |
* |
|
| 38 |
*/ |
|
| 39 |
package org.gvsig.utils.bigfile; |
|
| 40 |
|
|
| 41 |
import java.io.File; |
|
| 42 |
import java.io.FileInputStream; |
|
| 43 |
import java.io.FileNotFoundException; |
|
| 44 |
import java.io.IOException; |
|
| 45 |
import java.nio.ByteBuffer; |
|
| 46 |
import java.nio.channels.FileChannel; |
|
| 47 |
import java.util.Random; |
|
| 48 |
|
|
| 49 |
/** |
|
| 50 |
* @author fjp |
|
| 51 |
* |
|
| 52 |
*/ |
|
| 53 |
public class TestBigByteBuffer {
|
|
| 54 |
File f = new File("D:/Fjp/chiara/plano/vias.shp");
|
|
| 55 |
FileInputStream fin; |
|
| 56 |
FileInputStream fin2; |
|
| 57 |
FileChannel channel2; |
|
| 58 |
|
|
| 59 |
BigByteBuffer2 bb; |
|
| 60 |
// Hacemos varias pruebas para ver si funciona |
|
| 61 |
// exactamente igual que el original |
|
| 62 |
static int numPruebas = 50000; |
|
| 63 |
|
|
| 64 |
public class MyThread extends Thread |
|
| 65 |
{
|
|
| 66 |
|
|
| 67 |
String name; |
|
| 68 |
public MyThread(String string) {
|
|
| 69 |
name = string; |
|
| 70 |
|
|
| 71 |
} |
|
| 72 |
|
|
| 73 |
public void run() {
|
|
| 74 |
try {
|
|
| 75 |
prueba2(name, f, numPruebas); |
|
| 76 |
} catch (FileNotFoundException e) {
|
|
| 77 |
// TODO Auto-generated catch block |
|
| 78 |
e.printStackTrace(); |
|
| 79 |
} catch (IOException e) {
|
|
| 80 |
// TODO Auto-generated catch block |
|
| 81 |
e.printStackTrace(); |
|
| 82 |
} catch (Exception e) {
|
|
| 83 |
e.printStackTrace(); |
|
| 84 |
} |
|
| 85 |
} |
|
| 86 |
|
|
| 87 |
} |
|
| 88 |
|
|
| 89 |
/** |
|
| 90 |
* @param args |
|
| 91 |
* @throws IOException |
|
| 92 |
*/ |
|
| 93 |
public static void main(String[] args) throws IOException {
|
|
| 94 |
// TODO Auto-generated method stub |
|
| 95 |
|
|
| 96 |
// prueba1(f, numPruebas); |
|
| 97 |
TestBigByteBuffer test = new TestBigByteBuffer(); |
|
| 98 |
test.test(); |
|
| 99 |
|
|
| 100 |
} |
|
| 101 |
|
|
| 102 |
public void test() throws IOException |
|
| 103 |
{
|
|
| 104 |
fin2 = new FileInputStream(f); |
|
| 105 |
channel2 = fin2.getChannel(); |
|
| 106 |
bb = new BigByteBuffer2(channel2, |
|
| 107 |
FileChannel.MapMode.READ_ONLY, 1024*8); |
|
| 108 |
MyThread th = new MyThread("T1:");
|
|
| 109 |
th.start(); |
|
| 110 |
MyThread th2 = new MyThread("T2: ");
|
|
| 111 |
th2.start(); |
|
| 112 |
|
|
| 113 |
|
|
| 114 |
System.out.println("Fin de la prueba. " + numPruebas + " iteraciones.");
|
|
| 115 |
|
|
| 116 |
} |
|
| 117 |
|
|
| 118 |
/** |
|
| 119 |
* @param name |
|
| 120 |
* @param f |
|
| 121 |
* @param numPruebas |
|
| 122 |
* @throws Exception |
|
| 123 |
*/ |
|
| 124 |
private void prueba2(String name, File f, int numPruebas) throws Exception {
|
|
| 125 |
FileInputStream fin; |
|
| 126 |
fin = new FileInputStream(f); |
|
| 127 |
// Open the file and then get a channel from the stream |
|
| 128 |
FileChannel channel = fin.getChannel(); |
|
| 129 |
int size = (int) channel.size(); |
|
| 130 |
// Get the file's size and then map it into memory |
|
| 131 |
ByteBuffer bbCorrect = channel.map(FileChannel.MapMode.READ_ONLY, 0, size); |
|
| 132 |
// Chunkeo a 1KB |
|
| 133 |
Random rnd = new Random(); |
|
| 134 |
long t1 = System.currentTimeMillis(); |
|
| 135 |
|
|
| 136 |
for (int i=0; i < numPruebas; i++) |
|
| 137 |
{
|
|
| 138 |
int pos = rnd.nextInt(size-10); |
|
| 139 |
// pos = 0; |
|
| 140 |
bbCorrect.position(pos); |
|
| 141 |
int bCorrect = bbCorrect.getInt(); |
|
| 142 |
// bb.position(pos); |
|
| 143 |
int bPrueba = bb.getInt(pos); |
|
| 144 |
if (bCorrect != bPrueba) |
|
| 145 |
{
|
|
| 146 |
System.err.println(name + "Error de lectura. " + bCorrect + " " + bPrueba); |
|
| 147 |
throw new Exception("Error con pos=" + pos);
|
|
| 148 |
} |
|
| 149 |
else |
|
| 150 |
{
|
|
| 151 |
System.out.println(name + "Correcto: pos=" + pos + " byte= " + bPrueba); |
|
| 152 |
} |
|
| 153 |
|
|
| 154 |
} |
|
| 155 |
close(channel2, fin2, bb); |
|
| 156 |
long t2 = System.currentTimeMillis(); |
|
| 157 |
System.out.println("T=" + (t2-t1) + "mseconds");
|
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
/** |
|
| 161 |
* @param f |
|
| 162 |
* @param numPruebas |
|
| 163 |
* @throws FileNotFoundException |
|
| 164 |
* @throws IOException |
|
| 165 |
*/ |
|
| 166 |
private static void prueba1(File f, int numPruebas) throws FileNotFoundException, IOException {
|
|
| 167 |
FileInputStream fin; |
|
| 168 |
fin = new FileInputStream(f); |
|
| 169 |
// Open the file and then get a channel from the stream |
|
| 170 |
FileChannel channel = fin.getChannel(); |
|
| 171 |
int size = (int) channel.size(); |
|
| 172 |
// Get the file's size and then map it into memory |
|
| 173 |
ByteBuffer bbCorrect = channel.map(FileChannel.MapMode.READ_ONLY, 0, size); |
|
| 174 |
// Chunkeo a 1KB |
|
| 175 |
Random rnd = new Random(); |
|
| 176 |
long t1 = System.currentTimeMillis(); |
|
| 177 |
FileInputStream fin2 = new FileInputStream(f); |
|
| 178 |
FileChannel channel2 = fin2.getChannel(); |
|
| 179 |
BigByteBuffer bb = new BigByteBuffer(channel2, |
|
| 180 |
FileChannel.MapMode.READ_ONLY, 1024*1024); |
|
| 181 |
for (int i=0; i < numPruebas; i++) |
|
| 182 |
{
|
|
| 183 |
int pos = rnd.nextInt(size-10); |
|
| 184 |
// pos = 2; |
|
| 185 |
|
|
| 186 |
byte bCorrect = bbCorrect.get(pos); |
|
| 187 |
byte bPrueba = bb.get(pos); |
|
| 188 |
if (bCorrect != bPrueba) |
|
| 189 |
{
|
|
| 190 |
System.err.println("Error de lectura. " + bCorrect + " " + bPrueba);
|
|
| 191 |
} |
|
| 192 |
else |
|
| 193 |
{
|
|
| 194 |
// System.out.println("Correcto: pos=" + pos + " byte= " + bPrueba);
|
|
| 195 |
} |
|
| 196 |
|
|
| 197 |
} |
|
| 198 |
close(channel2, fin2, bb); |
|
| 199 |
System.gc(); |
|
| 200 |
long t2 = System.currentTimeMillis(); |
|
| 201 |
System.out.println("T=" + (t2-t1) + "mseconds");
|
|
| 202 |
} |
|
| 203 |
|
|
| 204 |
static public synchronized void close(FileChannel channel, FileInputStream fin, BigByteBuffer2 bb) throws IOException {
|
|
| 205 |
IOException ret = null; |
|
| 206 |
|
|
| 207 |
try {
|
|
| 208 |
channel.close(); |
|
| 209 |
} catch (IOException e) {
|
|
| 210 |
ret = e; |
|
| 211 |
} finally {
|
|
| 212 |
try {
|
|
| 213 |
fin.close(); |
|
| 214 |
} catch (IOException e1) {
|
|
| 215 |
ret = e1; |
|
| 216 |
} |
|
| 217 |
} |
|
| 218 |
|
|
| 219 |
if (ret != null) {
|
|
| 220 |
throw ret; |
|
| 221 |
} |
|
| 222 |
// else // Si todo ha ido bien, preparamos para liberar memoria. |
|
| 223 |
// bb = null; |
|
| 224 |
} |
|
| 225 |
static public synchronized void close(FileChannel channel, FileInputStream fin, BigByteBuffer bb) throws IOException {
|
|
| 226 |
IOException ret = null; |
|
| 227 |
|
|
| 228 |
try {
|
|
| 229 |
channel.close(); |
|
| 230 |
} catch (IOException e) {
|
|
| 231 |
ret = e; |
|
| 232 |
} finally {
|
|
| 233 |
try {
|
|
| 234 |
fin.close(); |
|
| 235 |
} catch (IOException e1) {
|
|
| 236 |
ret = e1; |
|
| 237 |
} |
|
| 238 |
} |
|
| 239 |
|
|
| 240 |
if (ret != null) {
|
|
| 241 |
throw ret; |
|
| 242 |
} |
|
| 243 |
else // Si todo ha ido bien, preparamos para liberar memoria. |
|
| 244 |
bb = null; |
|
| 245 |
} |
|
| 246 |
|
|
| 247 |
} |
|
| 0 | 248 | |
| tags/org.gvsig.desktop-2.0.101/org.gvsig.desktop.library/org.gvsig.utils/src/main/java/org/gvsig/utils/bigfile/BigByteBuffer2.java | ||
|---|---|---|
| 1 |
/** |
|
| 2 |
* gvSIG. Desktop Geographic Information System. |
|
| 3 |
* |
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association. |
|
| 5 |
* |
|
| 6 |
* This program is free software; you can redistribute it and/or |
|
| 7 |
* modify it under the terms of the GNU General Public License |
|
| 8 |
* as published by the Free Software Foundation; either version 3 |
|
| 9 |
* of the License, or (at your option) any later version. |
|
| 10 |
* |
|
| 11 |
* This program is distributed in the hope that it will be useful, |
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
| 14 |
* GNU General Public License for more details. |
|
| 15 |
* |
|
| 16 |
* You should have received a copy of the GNU General Public License |
|
| 17 |
* along with this program; if not, write to the Free Software |
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
|
| 19 |
* MA 02110-1301, USA. |
|
| 20 |
* |
|
| 21 |
* For any additional information, do not hesitate to contact us |
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com. |
|
| 23 |
*/ |
|
| 24 |
package org.gvsig.utils.bigfile; |
|
| 25 |
|
|
| 26 |
import java.io.IOException; |
|
| 27 |
import java.nio.Buffer; |
|
| 28 |
import java.nio.ByteBuffer; |
|
| 29 |
import java.nio.ByteOrder; |
|
| 30 |
import java.nio.CharBuffer; |
|
| 31 |
import java.nio.DoubleBuffer; |
|
| 32 |
import java.nio.FloatBuffer; |
|
| 33 |
import java.nio.IntBuffer; |
|
| 34 |
import java.nio.LongBuffer; |
|
| 35 |
import java.nio.ShortBuffer; |
|
| 36 |
import java.nio.channels.FileChannel; |
|
| 37 |
|
|
| 38 |
/** |
|
| 39 |
* @author Fjp |
|
| 40 |
* |
|
| 41 |
* Clase para trabajar con ficheros grandes. Mapea solo un trozo |
|
| 42 |
* de fichero en memoria, y cuando intentas acceder fuera de esa |
|
| 43 |
* zona, se ocupa de leer autom?ticamente el trozo que le falta. |
|
| 44 |
*/ |
|
| 45 |
public class BigByteBuffer2 {
|
|
| 46 |
|
|
| 47 |
private static long DEFAULT_SIZE = 60*1024; // 60 Kbytes |
|
| 48 |
|
|
| 49 |
ByteBuffer bb; |
|
| 50 |
// byte[] buff = new byte[1024 * 1024];; |
|
| 51 |
FileChannel fc; |
|
| 52 |
long minAbs, maxAbs, posAbs; |
|
| 53 |
int minRel, maxRel, posRel; |
|
| 54 |
long sizeChunk, amountMem; |
|
| 55 |
long fileSize; |
|
| 56 |
FileChannel.MapMode mode; |
|
| 57 |
|
|
| 58 |
/** |
|
| 59 |
* Revisa la posici?n absoluta, y si hace falta, carga el buffer |
|
| 60 |
* con la parte de fichero que toca. |
|
| 61 |
* @throws IOException |
|
| 62 |
*/ |
|
| 63 |
private synchronized void prepareBuffer(long posActual, int numBytesToRead) |
|
| 64 |
{
|
|
| 65 |
long desiredPos = posActual + numBytesToRead; |
|
| 66 |
if ((desiredPos > maxAbs) || (posActual < minAbs)) |
|
| 67 |
{
|
|
| 68 |
// Quiero leer fuera: |
|
| 69 |
sizeChunk = Math.min(fileSize-posActual, amountMem); |
|
| 70 |
try {
|
|
| 71 |
mapFrom(posActual); |
|
| 72 |
// System.out.println("BigByteBuffer: min=" + minAbs
|
|
| 73 |
// + " maxAbs=" + maxAbs + " posAbs = " + posAbs); |
|
| 74 |
|
|
| 75 |
} catch (IOException e) {
|
|
| 76 |
e.printStackTrace(); |
|
| 77 |
|
|
| 78 |
} |
|
| 79 |
|
|
| 80 |
} |
|
| 81 |
// Dejamos posAbs apuntando a donde va a quedar |
|
| 82 |
// "a priori", antes de leer de verdad, que se hace |
|
| 83 |
// al salir de esta funci?n. |
|
| 84 |
posAbs = desiredPos; |
|
| 85 |
|
|
| 86 |
} |
|
| 87 |
|
|
| 88 |
/** |
|
| 89 |
* @param posActual |
|
| 90 |
* @throws IOException |
|
| 91 |
*/ |
|
| 92 |
private synchronized ByteBuffer mapFrom(long newPos) throws IOException {
|
|
| 93 |
ByteOrder lastOrder = bb.order(); |
|
| 94 |
// bb = fc.map(mode, newPos, sizeChunk); |
|
| 95 |
fc.position(newPos); |
|
| 96 |
// bb = ByteBuffer.wrap(buff); |
|
| 97 |
// bb = ByteBuffer.allocate((int)sizeChunk); |
|
| 98 |
bb.position(0); |
|
| 99 |
int numRead = fc.read(bb); |
|
| 100 |
bb.position(0); |
|
| 101 |
// System.out.println("Mapeo desde " + newPos + " con sizeChunk= " + sizeChunk + " numRead = " + numRead);
|
|
| 102 |
minAbs = newPos; |
|
| 103 |
maxAbs = sizeChunk + newPos; |
|
| 104 |
bb.order(lastOrder); |
|
| 105 |
return bb; |
|
| 106 |
} |
|
| 107 |
|
|
| 108 |
public BigByteBuffer2(FileChannel fc, FileChannel.MapMode mode, long amountMem) throws IOException |
|
| 109 |
{
|
|
| 110 |
this.amountMem = amountMem; |
|
| 111 |
// this.buff = new byte[(int) amountMem]; |
|
| 112 |
this.fc = fc; |
|
| 113 |
this.fileSize = fc.size(); |
|
| 114 |
this.mode = mode; |
|
| 115 |
sizeChunk = Math.min(fc.size(), amountMem); |
|
| 116 |
// bb = fc.map(mode, 0L, sizeChunk); |
|
| 117 |
// bb = ByteBuffer.wrap(buff); |
|
| 118 |
bb = ByteBuffer.allocateDirect((int)sizeChunk); |
|
| 119 |
int numRead = fc.read(bb); |
|
| 120 |
bb.position(0); |
|
| 121 |
minAbs = 0; |
|
| 122 |
maxAbs = sizeChunk; |
|
| 123 |
} |
|
| 124 |
public BigByteBuffer2(FileChannel fc, FileChannel.MapMode mode) throws IOException |
|
| 125 |
{
|
|
| 126 |
this.amountMem = DEFAULT_SIZE; |
|
| 127 |
this.fc = fc; |
|
| 128 |
this.fileSize = fc.size(); |
|
| 129 |
this.mode = mode; |
|
| 130 |
sizeChunk = Math.min(fc.size(), amountMem); |
|
| 131 |
// bb = fc.map(mode, 0L, sizeChunk); |
|
| 132 |
bb = ByteBuffer.allocateDirect((int)sizeChunk); |
|
| 133 |
int numRead = fc.read(bb); |
|
| 134 |
bb.position(0); |
|
| 135 |
minAbs = 0; |
|
| 136 |
maxAbs = sizeChunk; |
|
| 137 |
} |
|
| 138 |
|
|
| 139 |
|
|
| 140 |
public synchronized byte get() {
|
|
| 141 |
prepareBuffer(posAbs,1); |
|
| 142 |
return bb.get(); |
|
| 143 |
} |
|
| 144 |
public synchronized ByteBuffer get(byte[] dst) |
|
| 145 |
{
|
|
| 146 |
prepareBuffer(posAbs, dst.length); |
|
| 147 |
return bb.get(dst); |
|
| 148 |
} |
|
| 149 |
|
|
| 150 |
public synchronized char getChar() {
|
|
| 151 |
prepareBuffer(posAbs,2); |
|
| 152 |
return bb.getChar(); |
|
| 153 |
} |
|
| 154 |
|
|
| 155 |
public synchronized double getDouble() {
|
|
| 156 |
prepareBuffer(posAbs,8); |
|
| 157 |
return bb.getDouble(); |
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
public synchronized float getFloat() {
|
|
| 161 |
prepareBuffer(posAbs,4); |
|
| 162 |
return bb.getFloat(); |
|
| 163 |
} |
|
| 164 |
|
|
| 165 |
public synchronized int getInt() {
|
|
| 166 |
prepareBuffer(posAbs,4); |
|
| 167 |
return bb.getInt(); |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
public synchronized long getLong() {
|
|
| 171 |
prepareBuffer(posAbs,8); |
|
| 172 |
return bb.getLong(); |
|
| 173 |
} |
|
| 174 |
|
|
| 175 |
public synchronized short getShort() {
|
|
| 176 |
prepareBuffer(posAbs,2); |
|
| 177 |
return bb.getShort(); |
|
| 178 |
} |
|
| 179 |
|
|
| 180 |
public boolean isDirect() {
|
|
| 181 |
return bb.isDirect(); |
|
| 182 |
} |
|
| 183 |
|
|
| 184 |
public synchronized byte get(int index) {
|
|
| 185 |
prepareBuffer(index,1); |
|
| 186 |
return bb.get(index - (int) minAbs); |
|
| 187 |
} |
|
| 188 |
|
|
| 189 |
public synchronized char getChar(int index) {
|
|
| 190 |
prepareBuffer(index,2); |
|
| 191 |
return bb.getChar(index - (int) minAbs); |
|
| 192 |
} |
|
| 193 |
|
|
| 194 |
public synchronized double getDouble(int index) {
|
|
| 195 |
prepareBuffer(index,8); |
|
| 196 |
return bb.getDouble(index - (int) minAbs); |
|
| 197 |
} |
|
| 198 |
|
|
| 199 |
public synchronized float getFloat(int index) {
|
|
| 200 |
prepareBuffer(index,4); |
|
| 201 |
return bb.getFloat(index - (int) minAbs); |
|
| 202 |
} |
|
| 203 |
|
|
| 204 |
public synchronized int getInt(int index) {
|
|
| 205 |
prepareBuffer(index,4); |
|
| 206 |
return bb.getInt(index - (int) minAbs); |
|
| 207 |
} |
|
| 208 |
|
|
| 209 |
public synchronized long getLong(int index) {
|
|
| 210 |
prepareBuffer(index,8); |
|
| 211 |
return bb.getLong(index - (int) minAbs); |
|
| 212 |
} |
|
| 213 |
|
|
| 214 |
public synchronized short getShort(int index) {
|
|
| 215 |
prepareBuffer(index,2); |
|
| 216 |
return bb.getShort(index - (int) minAbs); |
|
| 217 |
} |
|
| 218 |
|
|
| 219 |
public ByteBuffer asReadOnlyBuffer() {
|
|
| 220 |
return bb.asReadOnlyBuffer(); |
|
| 221 |
} |
|
| 222 |
|
|
| 223 |
public ByteBuffer compact() {
|
|
| 224 |
return bb.compact(); |
|
| 225 |
} |
|
| 226 |
|
|
| 227 |
public ByteBuffer duplicate() {
|
|
| 228 |
return bb.duplicate(); |
|
| 229 |
} |
|
| 230 |
|
|
| 231 |
public synchronized ByteBuffer slice() {
|
|
| 232 |
return bb.slice(); |
|
| 233 |
} |
|
| 234 |
|
|
| 235 |
public synchronized ByteBuffer put(byte b) {
|
|
| 236 |
prepareBuffer(posAbs,1); |
|
| 237 |
return bb.put(b); |
|
| 238 |
} |
|
| 239 |
|
|
| 240 |
public synchronized ByteBuffer putChar(char value) {
|
|
| 241 |
prepareBuffer(posAbs,2); |
|
| 242 |
return bb.putChar(value); |
|
| 243 |
} |
|
| 244 |
|
|
| 245 |
public synchronized ByteBuffer putDouble(double value) {
|
|
| 246 |
prepareBuffer(posAbs,8); |
|
| 247 |
return bb.putDouble(value); |
|
| 248 |
} |
|
| 249 |
|
|
| 250 |
public synchronized ByteBuffer putFloat(float value) {
|
|
| 251 |
prepareBuffer(posAbs,4); |
|
| 252 |
return bb.putFloat(value); |
|
| 253 |
} |
|
| 254 |
|
|
| 255 |
public synchronized ByteBuffer putInt(int value) {
|
|
| 256 |
prepareBuffer(posAbs,4); |
|
| 257 |
return bb.putInt(value); |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
public synchronized ByteBuffer put(int index, byte b) {
|
|
| 261 |
prepareBuffer(index,1); |
|
| 262 |
return bb.put(index- (int) minAbs, b); |
|
| 263 |
} |
|
| 264 |
|
|
| 265 |
public synchronized ByteBuffer putChar(int index, char value) {
|
|
| 266 |
prepareBuffer(index,2); |
|
| 267 |
return bb.putChar(index- (int) minAbs, value); |
|
| 268 |
} |
|
| 269 |
|
|
| 270 |
public synchronized ByteBuffer putDouble(int index, double value) {
|
|
| 271 |
prepareBuffer(index,8); |
|
| 272 |
return bb.putDouble(index- (int) minAbs, value); |
|
| 273 |
} |
|
| 274 |
|
|
| 275 |
public synchronized ByteBuffer putFloat(int index, float value) {
|
|
| 276 |
prepareBuffer(index,4); |
|
| 277 |
return bb.putFloat(index- (int) minAbs, value); |
|
| 278 |
} |
|
| 279 |
|
|
| 280 |
public synchronized ByteBuffer putInt(int index, int value) {
|
|
| 281 |
prepareBuffer(index,4); |
|
| 282 |
return bb.putInt(index- (int) minAbs, value); |
|
| 283 |
} |
|
| 284 |
|
|
| 285 |
public synchronized ByteBuffer putLong(int index, long value) {
|
|
| 286 |
prepareBuffer(index,8); |
|
| 287 |
return bb.putLong(index- (int) minAbs, value); |
|
| 288 |
} |
|
| 289 |
|
|
| 290 |
public synchronized ByteBuffer putShort(int index, short value) {
|
|
| 291 |
prepareBuffer(index,2); |
|
| 292 |
return bb.putShort(index- (int) minAbs, value); |
|
| 293 |
} |
|
| 294 |
|
|
| 295 |
public synchronized ByteBuffer putLong(long value) {
|
|
| 296 |
prepareBuffer(posAbs,8); |
|
| 297 |
return bb.putLong(value); |
|
| 298 |
} |
|
| 299 |
|
|
| 300 |
public synchronized ByteBuffer putShort(short value) {
|
|
| 301 |
prepareBuffer(posAbs,2); |
|
| 302 |
return bb.putShort(value); |
|
| 303 |
} |
|
| 304 |
|
|
| 305 |
public CharBuffer asCharBuffer() {
|
|
| 306 |
return bb.asCharBuffer(); |
|
| 307 |
} |
|
| 308 |
|
|
| 309 |
public DoubleBuffer asDoubleBuffer() {
|
|
| 310 |
return bb.asDoubleBuffer(); |
|
| 311 |
} |
|
| 312 |
|
|
| 313 |
public FloatBuffer asFloatBuffer() {
|
|
| 314 |
return bb.asFloatBuffer(); |
|
| 315 |
} |
|
| 316 |
|
|
| 317 |
public IntBuffer asIntBuffer() {
|
|
| 318 |
return bb.asIntBuffer(); |
|
| 319 |
} |
|
| 320 |
|
|
| 321 |
public LongBuffer asLongBuffer() {
|
|
| 322 |
return bb.asLongBuffer(); |
|
| 323 |
} |
|
| 324 |
|
|
| 325 |
public ShortBuffer asShortBuffer() {
|
|
| 326 |
return bb.asShortBuffer(); |
|
| 327 |
} |
|
| 328 |
|
|
| 329 |
public boolean isReadOnly() {
|
|
| 330 |
return bb.isReadOnly(); |
|
| 331 |
} |
|
| 332 |
|
|
| 333 |
public synchronized final ByteOrder order() |
|
| 334 |
{
|
|
| 335 |
return bb.order(); |
|
| 336 |
} |
|
| 337 |
|
|
| 338 |
public synchronized final ByteBuffer order(ByteOrder bo) |
|
| 339 |
{
|
|
| 340 |
return bb.order(bo); |
|
| 341 |
} |
|
| 342 |
public synchronized final long position() |
|
| 343 |
{
|
|
| 344 |
return posAbs; |
|
| 345 |
} |
|
| 346 |
|
|
| 347 |
public synchronized final Buffer position(long newPosition) |
|
| 348 |
{
|
|
| 349 |
prepareBuffer(newPosition,0); |
|
| 350 |
int relPos = (int) (newPosition - minAbs); |
|
| 351 |
if (relPos < 0) |
|
| 352 |
System.out.println("Position=" + newPosition);
|
|
| 353 |
return bb.position(relPos); |
|
| 354 |
} |
|
| 355 |
|
|
| 356 |
} |
|
| 0 | 357 | |
Also available in: Unified diff