svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.shp / src / main / java / org / gvsig / fmap / dal / store / shp / utils / SHPFile2.java @ 42811
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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 modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us at info AT
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* gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.dal.store.shp.utils; |
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|
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileReader; |
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import java.io.IOException; |
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import java.nio.ByteOrder; |
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import java.nio.channels.FileChannel; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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|
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import org.gvsig.fmap.dal.exception.CloseException; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.FileNotFoundException; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.dal.store.shp.SHPStoreParameters; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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import org.gvsig.fmap.geom.Geometry.TYPES; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.primitive.PointGeometryType; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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import org.gvsig.fmap.geom.type.GeometryTypeNotSupportedException; |
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import org.gvsig.fmap.geom.type.GeometryTypeNotValidException; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.utils.bigfile.BigByteBuffer2; |
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|
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/**
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* @author jmvivo
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*
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*/
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public class SHPFile2 implements ISHPFile { |
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private static final Logger logger = LoggerFactory.getLogger(SHPFile2.class); |
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private Envelope extent;
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private int type; |
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private int subType; |
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private String srsParameters; |
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private FileInputStream fin; |
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private FileChannel channel; |
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private BigByteBuffer2 bb;
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private FileInputStream finShx; |
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private FileChannel channelShx; |
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private BigByteBuffer2 bbShx;
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private SHPStoreParameters params;
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private int[] supportedGeometryTypes; |
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private final GeometryManager gManager = GeometryLocator |
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.getGeometryManager(); |
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private GeometryType gtypeNull;
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private PointGeometryType gtypePoint2D;
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private GeometryType gtypeCurve2D;
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private GeometryType gtypeSurface2D;
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private GeometryType gtypeMultiPoint2D;
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private boolean useNullGeometry = false; |
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private SHPReader reader;
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public SHPFile2(SHPStoreParameters params) {
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this.params = params;
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try {
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gtypeNull = gManager.getGeometryType(TYPES.NULL, SUBTYPES.GEOM2D); |
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gtypePoint2D |
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= (PointGeometryType) gManager.getGeometryType(TYPES.POINT, |
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SUBTYPES.GEOM2D); |
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gtypeCurve2D |
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= gManager.getGeometryType(TYPES.CURVE, SUBTYPES.GEOM2D); |
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gtypeSurface2D |
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= gManager.getGeometryType(TYPES.SURFACE, SUBTYPES.GEOM2D); |
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gtypeMultiPoint2D |
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= gManager.getGeometryType(TYPES.MULTIPOINT, SUBTYPES.GEOM2D); |
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} catch (GeometryTypeNotSupportedException e) {
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throw new RuntimeException( |
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"Unable to get the 2D geometry types to use", e);
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} catch (GeometryTypeNotValidException e) {
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throw new RuntimeException( |
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"Unable to get the 2D geometry types to use", e);
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} |
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} |
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public void setUseNullGeometry(boolean useNullGeometry) { |
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this.useNullGeometry = useNullGeometry;
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.dal.Resource#doClose()
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*/
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public void close() throws CloseException { |
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CloseException ret = null;
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logger.debug("Closing shp/shx file '"+this.params.getSHPFileName()+"'"); |
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// FIXME: Arreglar esto para que se acumulen los errores
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try {
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channel.close(); |
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channelShx.close(); |
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} catch (IOException e) { |
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ret = new CloseException("SHPFile.close", e); |
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} finally {
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try {
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fin.close(); |
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finShx.close(); |
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} catch (IOException e1) { |
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ret = new CloseException("SHPFile.close", e1); |
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} |
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} |
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if (ret != null) { |
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throw ret;
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} |
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bb = null;
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bbShx = null;
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fin = null;
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finShx = null;
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channel = null;
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channelShx = null;
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srsParameters = null;
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} |
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public boolean isOpen() { |
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return this.fin != null; |
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} |
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public synchronized void open() throws DataException { |
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try {
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fin = new FileInputStream(this.params.getSHPFile()); |
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} catch (java.io.FileNotFoundException e) {
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throw new FileNotFoundException(this.params.getSHPFileName()); |
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} |
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// Open the file and then get a channel from the stream
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channel = fin.getChannel(); |
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// long size = channel.size();
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// Get the file's size and then map it into memory
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// bb = channel.map(FileChannel.MapMode.READ_ONLY, 0, size);
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try {
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bb = new BigByteBuffer2(channel, FileChannel.MapMode.READ_ONLY); |
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} catch (IOException e) { |
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throw new ReadException(this.params.getSHPFileName(), e); |
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} |
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try {
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finShx = new FileInputStream(this.params.getSHXFile()); |
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} catch (java.io.FileNotFoundException e) {
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throw new FileNotFoundException(this.params.getSHXFileName()); |
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} |
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// Open the file and then get a channel from the stream
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channelShx = finShx.getChannel(); |
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// long sizeShx = channelShx.size();
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// Get the file's size and then map it into memory
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// bb = channel.map(FileChannel.MapMode.READ_ONLY, 0, size);
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// bbShx = channelShx.map(FileChannel.MapMode.READ_ONLY, 0, sizeShx);
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try {
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bbShx |
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= new BigByteBuffer2(channelShx, FileChannel.MapMode.READ_ONLY); |
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} catch (IOException e) { |
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throw new ReadException(this.params.getSHXFileName(), e); |
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} |
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bbShx.order(ByteOrder.BIG_ENDIAN);
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// create a new header.
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ShapeFileHeader2 myHeader = new ShapeFileHeader2();
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bb.position(0);
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// read the header
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myHeader.readHeader(bb); |
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double[] min = new double[2]; |
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min[0] = myHeader.myXmin;
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min[1] = myHeader.myYmin;
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double[] max = new double[2]; |
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max[0] = myHeader.myXmax;
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max[1] = myHeader.myYmax;
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try {
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extent = |
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gManager.createEnvelope(min[0], min[1], max[0], max[1], |
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SUBTYPES.GEOM2D); |
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} catch (CreateEnvelopeException e1) {
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logger.warn("Error creating the envelope", e1);
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} |
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// extent = new Rectangle2D.Double(myHeader.myXmin, myHeader.myYmin,
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// myHeader.myXmax - myHeader.myXmin,
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// myHeader.myYmax - myHeader.myYmin);
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type = myHeader.myShapeType; |
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subType = getGeometrySubType(); |
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switch (subType) {
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case SUBTYPES.GEOM2D:
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reader = new SHPReader2D(this.params); |
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break;
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case SUBTYPES.GEOM2DM:
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reader = new SHPReader2DM(this.params); |
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break;
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case SUBTYPES.GEOM3DM:
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reader = new SHPReader3DM(this.params); |
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break;
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default:
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break;
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} |
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this.initSupportedGeometryTypes();
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double x = myHeader.myXmin;
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double y = myHeader.myYmin;
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double w = myHeader.myXmax - myHeader.myXmin;
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double h = myHeader.myYmax - myHeader.myYmin;
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if (w == 0) { |
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x -= 0.1;
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w = 0.2;
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} |
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if (h == 0) { |
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y -= 0.1;
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h = 0.2;
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} |
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// TODO: SRS
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File prjFile = SHP.getPrjFile(this.params.getSHPFile()); |
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if (prjFile.exists()) {
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BufferedReader input = null; |
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try {
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input = new BufferedReader(new FileReader(prjFile)); |
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} catch (java.io.FileNotFoundException e) {
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throw new FileNotFoundException(prjFile.getAbsolutePath()); |
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} |
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try {
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this.srsParameters = input.readLine();
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} catch (IOException e) { |
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throw new ReadException("SHPFile.open prj", e); |
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} finally {
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try {
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input.close(); |
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} catch (IOException e) { |
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// TODO ???
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} |
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} |
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} else {
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this.srsParameters = null; |
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} |
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} |
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public Envelope getFullExtent() throws ReadException { |
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return this.extent; |
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} |
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public boolean isEditable() { |
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return this.params.getDBFFile().canWrite() |
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&& this.params.getSHPFile().canWrite()
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&& this.params.getSHXFile().canWrite();
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} |
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public int getGeometryType() throws ReadException { |
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int auxType = 0; |
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switch (type) {
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case (SHP.POINT2D):
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case (SHP.POINT3D):
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case (SHP.POINTM):
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auxType = auxType | Geometry.TYPES.POINT; |
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break;
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case (SHP.POLYLINE2D):
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case (SHP.POLYLINE3D):
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case (SHP.POLYLINEM):
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auxType = auxType | Geometry.TYPES.MULTICURVE; |
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break;
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case (SHP.POLYGON2D):
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case (SHP.POLYGON3D):
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case (SHP.POLYGONM):
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auxType = auxType | Geometry.TYPES.MULTISURFACE; |
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break;
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case (SHP.MULTIPOINT2D):
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case (SHP.MULTIPOINT3D):
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case (SHP.MULTIPOINTM):
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auxType = auxType | Geometry.TYPES.MULTIPOINT; |
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break;
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} |
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return auxType;
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} |
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public int getGeometrySubType() throws ReadException { |
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switch (type) {
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case (SHP.POINT2D):
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case (SHP.POLYLINE2D):
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case (SHP.POLYGON2D):
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case (SHP.MULTIPOINT2D):
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return SUBTYPES.GEOM2D;
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case (SHP.POINT3D):
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case (SHP.POLYLINE3D):
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case (SHP.POLYGON3D):
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case (SHP.MULTIPOINT3D):
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return SUBTYPES.GEOM3DM;
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case (SHP.POINTM):
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case (SHP.POLYLINEM):
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case (SHP.POLYGONM):
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case (SHP.MULTIPOINTM):
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return SUBTYPES.GEOM2DM;
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} |
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return SUBTYPES.UNKNOWN;
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} |
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public Geometry getNullGeometry() throws CreateGeometryException { |
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if (this.useNullGeometry) { |
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return gtypeNull.create();
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} |
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return null; |
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} |
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/**
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* Gets the geometry with the index provided. Set to synchronized to prevent
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* concurrent threads issue (?)
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*
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* @param position
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* @return
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* @throws ReadException
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* @throws CreateGeometryException
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*/
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public synchronized Geometry getGeometry(long position) |
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throws ReadException, CreateGeometryException {
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|
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int shapeType;
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bb.position(getPositionForRecord(position)); |
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bb.order(ByteOrder.LITTLE_ENDIAN);
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shapeType = bb.getInt(); |
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if (shapeType == SHP.NULL) {
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return getNullGeometry();
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} |
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/*
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* Inconsistency: this particular shape is not
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* of the expected type. This can be because the SHP file
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* is corrupt and it can cause "out of memory error"
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* because the code will possibly try to instantiate a
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* huge (absurd) array, so it's safer to return a null geometry
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*/
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if (shapeType != type) {
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if( ! this.params.getAllowInconsistenciesInGeometryType() ) { |
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throw new InconsistenciesInGeometryTypeException(shapeType); |
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} |
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} |
397 |
|
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// retrieve that shape.
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switch (type) {
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case (SHP.POINT2D):
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case (SHP.POINT3D):
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case (SHP.POINTM):
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return reader.readPoint(bb);
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|
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case (SHP.POLYLINE2D):
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case (SHP.POLYLINE3D):
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case (SHP.POLYLINEM):
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return reader.readPoLyline(bb);
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|
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case (SHP.POLYGON2D):
|
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case (SHP.POLYGON3D):
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case (SHP.POLYGONM):
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try {
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return reader.readPoLygon(bb);
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} catch (BaseException e) {
|
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throw new CreateGeometryException(Geometry.TYPES.POLYGON, getGeometrySubType(), e); |
417 |
} |
418 |
|
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case (SHP.MULTIPOINT2D):
|
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case (SHP.MULTIPOINTM):
|
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|
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case (SHP.MULTIPOINT3D):
|
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return reader.readMultiPoint(bb);
|
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} |
425 |
return null; |
426 |
} |
427 |
|
428 |
private class InconsistenciesInGeometryTypeException extends ReadException { |
429 |
|
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private final static String MESSAGE_FORMAT = "The geometry type (%(geomTypeOfHeader)) of the shape file (%(fname)) does not match the type of the current geometry (%(geomTypeOfGeometry)).\nCheck 'Allow inconsistencies in geometry type' in the shape's properties of the add layer dialog to ignore it."; |
431 |
private final static String MESSAGE_KEY = "_InconsistenciesInGeometryTypeException"; |
432 |
private static final long serialVersionUID = 8991813814092628916L; |
433 |
|
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public InconsistenciesInGeometryTypeException(int geomTypeOfGeometry) { |
435 |
super(MESSAGE_FORMAT, null, MESSAGE_KEY, serialVersionUID); |
436 |
setValue("geomTypeOfHeader", SHP.getTypeName(type));
|
437 |
setValue("geomTypeOfGeometry", SHP.getTypeName(geomTypeOfGeometry));
|
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setValue("fname", params.getSHPFile().getName());
|
439 |
|
440 |
} |
441 |
} |
442 |
|
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private long getPositionForRecord(long numRec) { |
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// shx file has a 100 bytes header, then, records
|
445 |
// 8 bytes length, one for each entity.
|
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// first 4 bytes are the offset
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// next 4 bytes are length
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448 |
|
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int posIndex = 100 + ((int) numRec * 8); |
450 |
// bbShx.position(posIndex);
|
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long pos = 8 + 2 * bbShx.getInt(posIndex); |
452 |
|
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return pos;
|
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} |
455 |
|
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/**
|
457 |
* Reads the Point from the shape file.
|
458 |
*
|
459 |
* @param in ByteBuffer.
|
460 |
*
|
461 |
* @return Point2D.
|
462 |
* @throws ReadException
|
463 |
* @throws CreateGeometryException
|
464 |
*/
|
465 |
private Point readPoint(BigByteBuffer2 in) |
466 |
throws CreateGeometryException, ReadException {
|
467 |
return readPoint(subType, in);
|
468 |
} |
469 |
|
470 |
private Point readPoint(int subtype, BigByteBuffer2 in) |
471 |
throws CreateGeometryException, ReadException {
|
472 |
// bytes 1 to 4 are the type and have already been read.
|
473 |
// bytes 4 to 12 are the X coordinate
|
474 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
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double x = in.getDouble();
|
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double y = in.getDouble();
|
477 |
Point p = gManager.createPoint(x, y, subtype);
|
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return p;
|
479 |
} |
480 |
|
481 |
/**
|
482 |
* Lee un rect?ngulo del fichero.
|
483 |
*
|
484 |
* @param in ByteBuffer.
|
485 |
*
|
486 |
* @return Rect?ngulo.
|
487 |
* @throws CreateEnvelopeException
|
488 |
*
|
489 |
* @throws IOException
|
490 |
*/
|
491 |
private Envelope readRectangle(BigByteBuffer2 in)
|
492 |
throws CreateEnvelopeException {
|
493 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
494 |
double x = in.getDouble();
|
495 |
double y = in.getDouble();
|
496 |
|
497 |
double x2 = in.getDouble();
|
498 |
|
499 |
if (x2 - x == 0) { |
500 |
x2 += 0.2;
|
501 |
x -= 0.1;
|
502 |
} |
503 |
|
504 |
double y2 = in.getDouble();
|
505 |
|
506 |
if (y2 - y == 0) { |
507 |
y2 += 0.2;
|
508 |
y -= 0.1;
|
509 |
} |
510 |
Envelope tempEnvelope |
511 |
= gManager.createEnvelope(x, y, x2, y2, SUBTYPES.GEOM2D); |
512 |
return tempEnvelope;
|
513 |
} |
514 |
|
515 |
/**
|
516 |
* Gets the geometry bbox with the index provided. Set to synchronized to
|
517 |
* prevent concurrent threads issue (?)
|
518 |
*
|
519 |
* @param featureIndex
|
520 |
* @return
|
521 |
* @throws ReadException
|
522 |
* @throws CreateEnvelopeException
|
523 |
* @throws CreateGeometryException
|
524 |
*/
|
525 |
public synchronized Envelope getBoundingBox(long featureIndex) |
526 |
throws ReadException, CreateEnvelopeException, CreateGeometryException {
|
527 |
Point p;
|
528 |
Envelope BoundingBox = null;
|
529 |
try {
|
530 |
bb.position(getPositionForRecord(featureIndex)); |
531 |
} catch (Exception e) { |
532 |
throw new ReadException("getBondingBox (" + featureIndex + ")", e); |
533 |
// logger.error(" Shapefile is corrupted. Drawing aborted. ="+e+
|
534 |
// " "+"index = "+index);
|
535 |
} |
536 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
537 |
|
538 |
int tipoShape = bb.getInt();
|
539 |
|
540 |
// AZABALA: si tipoShape viene con valores erroneos deja de funcionar
|
541 |
// el metodo getShape(i)
|
542 |
// if (tipoShape != SHP.NULL) {
|
543 |
// type = tipoShape;
|
544 |
// }
|
545 |
// retrieve that shape.
|
546 |
// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
|
547 |
switch (tipoShape) {
|
548 |
case (SHP.POINT2D):
|
549 |
case (SHP.POINT3D):
|
550 |
p = readPoint(bb); |
551 |
BoundingBox |
552 |
= gManager.createEnvelope(p.getX() - 0.1, p.getY() - 0.1, |
553 |
p.getX() + 0.2, p.getY() + 0.2, SUBTYPES.GEOM2D); |
554 |
// new Rectangle2D.Double(p.getX() - 0.1,
|
555 |
// p.getY() - 0.1, 0.2, 0.2);
|
556 |
|
557 |
break;
|
558 |
|
559 |
case (SHP.POLYLINE2D):
|
560 |
case (SHP.POLYLINEM):
|
561 |
case (SHP.POLYGON2D):
|
562 |
case (SHP.POLYGONM):
|
563 |
case (SHP.MULTIPOINT2D):
|
564 |
case (SHP.MULTIPOINTM):
|
565 |
case (SHP.POLYLINE3D):
|
566 |
case (SHP.POLYGON3D):
|
567 |
case (SHP.MULTIPOINT3D):
|
568 |
|
569 |
// BoundingBox
|
570 |
BoundingBox = readRectangle(bb); |
571 |
|
572 |
break;
|
573 |
} |
574 |
|
575 |
return BoundingBox;
|
576 |
} |
577 |
|
578 |
/**
|
579 |
* @return
|
580 |
*/
|
581 |
public String getSRSParameters() { |
582 |
return this.srsParameters; |
583 |
} |
584 |
|
585 |
private void initSupportedGeometryTypes() throws ReadException { |
586 |
switch (this.getGeometryType()) { |
587 |
case Geometry.TYPES.POINT:
|
588 |
supportedGeometryTypes |
589 |
= new int[]{Geometry.TYPES.POINT, Geometry.TYPES.NULL}; |
590 |
break;
|
591 |
case Geometry.TYPES.MULTIPOINT:
|
592 |
supportedGeometryTypes |
593 |
= new int[]{Geometry.TYPES.MULTIPOINT, Geometry.TYPES.NULL}; |
594 |
break;
|
595 |
case Geometry.TYPES.MULTICURVE:
|
596 |
supportedGeometryTypes |
597 |
= new int[]{Geometry.TYPES.CURVE, Geometry.TYPES.ELLIPSE, |
598 |
Geometry.TYPES.ARC, Geometry.TYPES.CIRCLE, |
599 |
Geometry.TYPES.SURFACE, Geometry.TYPES.NULL, |
600 |
Geometry.TYPES.MULTICURVE}; |
601 |
break;
|
602 |
case Geometry.TYPES.MULTISURFACE:
|
603 |
supportedGeometryTypes |
604 |
= new int[]{Geometry.TYPES.ELLIPSE, Geometry.TYPES.CIRCLE, |
605 |
Geometry.TYPES.SURFACE, Geometry.TYPES.NULL, |
606 |
Geometry.TYPES.MULTISURFACE}; |
607 |
break;
|
608 |
|
609 |
default:
|
610 |
supportedGeometryTypes = new int[]{}; |
611 |
} |
612 |
} |
613 |
|
614 |
public boolean canWriteGeometry(int gvSIGgeometryType) { |
615 |
for (int i = 0; i < supportedGeometryTypes.length; i++) { |
616 |
if (gvSIGgeometryType == supportedGeometryTypes[i]) {
|
617 |
return true; |
618 |
} |
619 |
} |
620 |
return false; |
621 |
} |
622 |
} |