gvsig-gdal / trunk / org.gvsig.gdal / org.gvsig.gdal.prov / org.gvsig.gdal.prov.ogr / src / main / java / org / gvsig / gdal / prov / ogr / OGRDataExplorer.java @ 183
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright ? 2007-2016 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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* 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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* 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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* 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.gdal.prov.ogr; |
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import java.io.File; |
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import java.util.ArrayList; |
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import java.util.List; |
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import org.apache.commons.lang3.StringUtils; |
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import org.cresques.cts.ICRSFactory; |
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import org.cresques.cts.IProjection; |
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import org.gdal.ogr.DataSource; |
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import org.gdal.ogr.FieldDefn; |
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import org.gdal.ogr.GeomFieldDefn; |
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import org.gdal.ogr.Layer; |
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import org.gdal.ogr.ogr; |
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import org.gdal.ogr.ogrConstants; |
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import org.gdal.osr.SpatialReference; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataManager; |
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import org.gvsig.fmap.dal.DataServerExplorerParameters; |
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import org.gvsig.fmap.dal.DataStoreParameters; |
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import org.gvsig.fmap.dal.NewDataStoreParameters; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.InitializeException; |
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import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
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import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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import org.gvsig.fmap.dal.resource.ResourceAction; |
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import org.gvsig.fmap.dal.resource.file.FileResource; |
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import org.gvsig.fmap.dal.resource.spi.ResourceConsumer; |
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import org.gvsig.fmap.dal.resource.spi.ResourceManagerProviderServices; |
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import org.gvsig.fmap.dal.resource.spi.ResourceProvider; |
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import org.gvsig.fmap.dal.spi.AbstractDataServerExplorer; |
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import org.gvsig.fmap.dal.spi.DataServerExplorerProvider; |
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import org.gvsig.fmap.dal.spi.DataServerExplorerProviderServices; |
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import org.gvsig.tools.dynobject.DynField; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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*
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* @author <a href="mailto:lmarques@disid.com">Lluis Marques</a>
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*
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*/
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public class OGRDataExplorer extends AbstractDataServerExplorer implements DataServerExplorerProvider, ResourceConsumer { |
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private static final Logger LOG = LoggerFactory.getLogger(OGRDataExplorer.class); |
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/**
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*
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*/
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public static final String NAME = "OGRDataExplorer"; |
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private DataServerExplorerProviderServices providerServives;
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protected OGRDataExplorerParameters parameters;
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private ResourceProvider resourceProvider;
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protected DataSource dataSource; |
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protected Boolean updateSupport; |
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private List<Layer> layerList; |
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/**
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* @param parameters
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* Parameters to open data explorer.
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* @param providerServices
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* Available services
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* @throws InitializeException
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* If there is some error initializing this store provider
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*/
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public OGRDataExplorer(OGRDataExplorerParameters parameters,
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DataServerExplorerProviderServices providerServices) throws InitializeException {
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this.providerServives = providerServices;
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this.parameters = parameters;
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getResourceProvider().addConsumer(this);
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} |
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private ResourceProvider getResourceProvider() {
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if (this.resourceProvider == null) { |
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ResourceManagerProviderServices manager = |
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(ResourceManagerProviderServices) DALLocator.getResourceManager(); |
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if (StringUtils.isBlank(parameters.getConnectionString())) {
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try {
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this.resourceProvider =
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(FileResource) manager.createAddResource(FileResource.NAME, |
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new Object[] { this.parameters.getFile().getAbsolutePath() }); |
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} catch (InitializeException e) {
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throw new ReadRuntimeException(getProviderName(), e); |
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} |
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} else {
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try {
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this.resourceProvider =
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(OGRResource) manager.createAddResource(OGRResource.NAME, |
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new Object[] { this.parameters.getConnectionString() }); |
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} catch (InitializeException e) {
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throw new ReadRuntimeException(getProviderName(), e); |
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} |
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} |
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} |
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return this.resourceProvider; |
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} |
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protected synchronized DataSource getDataSource() throws OGRUnsupportedFormatException { |
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if (this.dataSource == null) { |
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// Prioritize connection string over file
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if (StringUtils.isNotBlank(this.parameters.getConnectionString())) { |
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// Trying to open in update mode
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this.dataSource = ogr.Open(this.parameters.getConnectionString(), 1); |
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if (this.dataSource == null) { |
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this.dataSource = ogr.Open(this.parameters.getConnectionString()); |
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updateSupport = false;
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} else {
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updateSupport = true;
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} |
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} else if (this.parameters.getFile() != null && this.parameters.getFile().exists()) { |
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// Trying to open in update mode
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this.dataSource = ogr.Open(this.parameters.getFile().getAbsolutePath(), 1); |
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if (this.dataSource == null) { |
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this.dataSource = ogr.Open(this.parameters.getFile().getAbsolutePath()); |
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updateSupport = false;
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} else {
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updateSupport = true;
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} |
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} else {
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throw new IllegalStateException( |
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"Invalid parameters. Connection string must not be blank or file must exists");
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} |
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} |
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if (this.dataSource == null) { |
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if (StringUtils.isNotBlank(this.parameters.getConnectionString())) { |
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throw new OGRUnsupportedFormatException(this.parameters.getConnectionString()); |
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} |
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} |
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return this.dataSource; |
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} |
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@SuppressWarnings("unchecked") |
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protected List<Layer> getLayerList() { |
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if (this.layerList == null) { |
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this.layerList = (List<Layer>) getResourceProvider().execute(new ResourceAction() { |
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@Override
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public Object run() throws Exception { |
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List<Layer> layers = new ArrayList<Layer>(); |
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for (int i = 0; i < getDataSource().GetLayerCount(); i++) { |
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layers.add(getDataSource().GetLayer(i)); |
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} |
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return layers;
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} |
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}); |
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} |
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return this.layerList; |
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} |
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private Boolean hasUpdateSupport() throws OGRUnsupportedFormatException { |
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if (this.updateSupport == null) { |
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// Open data source to check update support of driver
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getDataSource(); |
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} |
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return this.updateSupport; |
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} |
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@Override
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public String getProviderName() { |
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return NAME;
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} |
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@Override
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public boolean canAdd() { |
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return (boolean) getResourceProvider().execute(new ResourceAction() { |
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@Override
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public Object run() throws Exception { |
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return getDataSource().TestCapability(ogrConstants.ODsCCreateLayer)
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&& getDataSource().TestCapability(ogrConstants.ODsCDeleteLayer) |
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&& hasUpdateSupport(); |
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} |
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}); |
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} |
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@Override
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public boolean canAdd(String storeName) throws DataException { |
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return getDataStoreProviderNames().contains(storeName) && canAdd();
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} |
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@SuppressWarnings("rawtypes") |
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@Override
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public List list() throws DataException { |
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return list(MODE_ALL);
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} |
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@SuppressWarnings("rawtypes") |
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@Override
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public List list(int mode) throws DataException { |
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List<Layer> layerList = getLayerList();
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DataManager dataManager = DALLocator.getDataManager(); |
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List<OGRDataStoreParameters> parametersList = new ArrayList<OGRDataStoreParameters>(); |
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for (Layer layer : layerList) {
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OGRDataStoreParameters storeParameters = |
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(OGRDataStoreParameters) dataManager.createStoreParameters(OGRDataStoreProvider.NAME); |
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String connectionString = this.parameters.getConnectionString(); |
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File file = this.parameters.getFile(); |
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storeParameters.setConnectionString(connectionString); |
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storeParameters.setFile(file); |
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storeParameters.setLayerName(layer.GetName()); |
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parametersList.add(storeParameters); |
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} |
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return parametersList;
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} |
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@Override
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public boolean add(String provider, final NewDataStoreParameters parameters, |
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final boolean overwrite) throws DataException { |
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if (canAdd()) {
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return (boolean) getResourceProvider().execute(new ResourceAction() { |
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@Override
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public Object run() throws Exception { |
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if (parameters instanceof OGRNewDataStoreParameters) { |
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OGRNewDataStoreParameters ogrParameters = |
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(OGRNewDataStoreParameters) parameters; |
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String layerName = ogrParameters.getLayerName();
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if (overwrite) {
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for (int i = 0; i < getLayerList().size(); i++) { |
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if (getLayerList().get(i).GetName().equals(layerName)) {
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getDataSource().DeleteLayer(i); |
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} |
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} |
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} else {
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for (Layer layer : getLayerList()) {
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if (layer.GetName().equals(layerName)) {
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return false; |
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} |
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} |
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} |
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EditableFeatureType editableFeatureType = |
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ogrParameters.getDefaultFeatureType(); |
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OGRConverter converter = new OGRConverter();
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// If SRS is defined convert it to spatial reference
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IProjection projection = editableFeatureType.getDefaultSRS(); |
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SpatialReference srs = null;
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if (projection != null) { |
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srs = new SpatialReference(projection.export(ICRSFactory.FORMAT_PROJ4));
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} |
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// Convert to geometry type to OGR Geometry type
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Integer ogrGeometryType = null; |
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if (editableFeatureType.getDefaultGeometryAttribute() != null) { |
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int geomType =
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editableFeatureType.getDefaultGeometryAttribute().getGeomType() |
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.getType(); |
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ogrGeometryType = converter.convertToOGRGeomType(geomType); |
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} |
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// Create layer
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Layer newlayer = null;
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if (srs == null) { |
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newlayer = getDataSource().CreateLayer(layerName); |
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} else if (ogrGeometryType == null && srs != null) { |
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newlayer = getDataSource().CreateLayer(layerName, srs); |
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} else if (ogrGeometryType != null && srs != null) { |
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newlayer = getDataSource().CreateLayer(layerName, srs, ogrGeometryType); |
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} |
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List<FieldDefn> fields =
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converter.convertFields(editableFeatureType.getNotEditableCopy()); |
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for (FieldDefn fieldDefn : fields) {
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newlayer.CreateField(fieldDefn); |
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} |
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List<GeomFieldDefn> geometryFields =
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converter.convertGeometryFields( |
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editableFeatureType.getNotEditableCopy(), false);
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for (GeomFieldDefn geomFieldDefn : geometryFields) {
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newlayer.CreateGeomField(geomFieldDefn); |
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} |
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return true; |
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} |
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return false; |
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} |
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}); |
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} |
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return false; |
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} |
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@Override
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public void remove(final DataStoreParameters parameters) throws DataException { |
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if (canAdd()) {
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getResourceProvider().execute(new ResourceAction() {
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@Override
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public Object run() throws Exception { |
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if (parameters instanceof OGRNewDataStoreParameters) { |
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OGRNewDataStoreParameters ogrParameters = |
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(OGRNewDataStoreParameters) parameters; |
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String layerName = ogrParameters.getLayerName();
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for (int i = 0; i < getLayerList().size(); i++) { |
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if (getLayerList().get(i).GetName().equals(layerName)) {
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getDataSource().DeleteLayer(i); |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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}); |
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} |
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} |
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@Override
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public NewDataStoreParameters getAddParameters(String storeName) throws DataException { |
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if (getDataStoreProviderNames().contains(storeName)) {
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OGRNewDataStoreParameters newParameters = new OGRNewDataStoreParameters();
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newParameters.setFile(this.parameters.getFile());
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newParameters.setConnectionString(this.parameters.getConnectionString());
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return newParameters;
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} |
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return null; |
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} |
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@Override
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public DataServerExplorerParameters getParameters() {
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return parameters;
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} |
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@SuppressWarnings("rawtypes") |
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@Override
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public List getDataStoreProviderNames() { |
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List<String> providerNames = new ArrayList<String>(); |
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providerNames.add(OGRDataStoreProvider.NAME); |
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return providerNames;
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} |
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@Override
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public void dispose() { |
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try {
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getDataSource().SyncToDisk(); |
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getDataSource().delete(); |
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} catch (OGRUnsupportedFormatException e) {
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LOG.warn("Can not dispose OGRDataExplorer", e);
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} |
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this.dataSource = null; |
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this.layerList = null; |
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getResourceProvider().removeConsumer(this);
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this.resourceProvider = null; |
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} |
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@Override
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public DataServerExplorerProviderServices getServerExplorerProviderServices() {
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return providerServives;
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} |
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@Override
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public boolean closeResourceRequested(ResourceProvider resource) { |
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try {
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getDataSource().SyncToDisk(); |
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getDataSource().delete(); |
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} catch (OGRUnsupportedFormatException e) {
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LOG.warn(String.format("Can not close requested resource %1s", resource), e); |
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} |
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this.dataSource = null; |
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this.layerList = null; |
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return true; |
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} |
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@Override
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public void resourceChanged(ResourceProvider resource) { |
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try {
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getDataSource().SyncToDisk(); |
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getDataSource().delete(); |
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} catch (OGRUnsupportedFormatException e) {
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LOG.warn("Can not sync to disk or release native resources to reopen data source", e);
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} |
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this.dataSource = null; |
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this.layerList = null; |
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} |
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@Override
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public DataStoreParameters get(String name) throws DataException { |
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// "name" es un nombre de fichero sin path.
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// No tengo nada clara esta implementacion
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OGRDataStoreParameters params = new OGRDataStoreParameters();
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//
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// Copiamos los paramametros que se llamen igual entre el explorer y
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// el DataStoreParametes
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for( DynField field : params.getDynClass().getDynFields() ) {
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String fieldName = field.getName();
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if( parameters.hasDynValue(fieldName) ) {
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params.setDynValue(fieldName, parameters.getDynValue(fieldName)); |
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} |
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} |
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// Si el file es una carpeta asignamos como file el fichero name que haya
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// en ella
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// Si el file es un fichero cogemos el fichero name que se encuentre en
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// su misma carpeta.
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if( parameters.getFile().isDirectory() ) {
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params.setFile(new File(parameters.getFile(),name)); |
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} else {
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params.setFile(new File(parameters.getFile().getParentFile(),name)); |
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} |
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// Usamos como layer el nombre del fichero pasado como parametro.
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params.setLayerName(name); |
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return params;
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} |
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} |