svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_dalfile / src / org / gvsig / fmap / dal / store / shp / utils / SHPFile.java @ 38893
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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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* 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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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2008 IVER T.I {{Task}}
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*/
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/**
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*
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*/
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package org.gvsig.fmap.dal.store.shp.utils; |
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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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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.aggregate.MultiPoint; |
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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.Curve; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.geom.primitive.OrientablePrimitive; |
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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.primitive.Surface; |
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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.utils.bigfile.BigByteBuffer2; |
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/**
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* @author jmvivo
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*
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*/
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public class SHPFile { |
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private static final Logger logger = LoggerFactory.getLogger(SHPFile.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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public SHPFile(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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/*
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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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// 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.error("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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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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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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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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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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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.GEOM3D;
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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 getGeometry(long position) |
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throws ReadException, CreateGeometryException {
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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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// el shape tal con tema tal y n?mro tal es null
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if (shapeType == SHP.NULL) {
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return gtypeNull.create();
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} |
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// retrieve that shape.
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// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
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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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Point point = readPoint(bb);
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fillPoint(point); |
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return point;
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case (SHP.POLYLINE2D):
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Curve curve = (Curve) gtypeCurve2D.create(); |
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fillCurve(curve); |
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return curve;
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case (SHP.POLYGON2D):
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Surface surface = (Surface) gtypeSurface2D.create(); |
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fillSurface(surface); |
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return surface;
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case (SHP.POLYLINE3D):
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Curve curve3D = |
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(Curve) gManager.create(TYPES.CURVE, SUBTYPES.GEOM3D); |
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fillCurve(curve3D); |
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fillZ(curve3D); |
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return curve3D;
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case (SHP.POLYGON3D):
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Surface surface3D = |
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(Surface) gManager.create(TYPES.SURFACE, SUBTYPES.GEOM3D); |
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fillSurface(surface3D); |
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fillZ(surface3D); |
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return surface3D;
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case (SHP.MULTIPOINT2D):
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Point p = null; |
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int numPoints;
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int i;
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int j;
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bb.position(bb.position() + 32);
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numPoints = bb.getInt(); |
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Point[] points = new Point[numPoints]; |
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for (i = 0; i < numPoints; i++) { |
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points[i] = |
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(Point) gManager.create(TYPES.POINT, SUBTYPES.GEOM2D);
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points[i].setX(bb.getDouble()); |
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points[i].setY(bb.getDouble()); |
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} |
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MultiPoint multipoint = (MultiPoint) gtypeMultiPoint2D.create(); |
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// MultiPoint multipoint =
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// (MultiPoint)GeometryLocator.getGeometryManager().create(TYPES.MULTIPOINT,
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// SUBTYPES.GEOM2D);
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for (int k = 0; k < points.length; k++) { |
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multipoint.addPoint(points[k]); |
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} |
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return multipoint;
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case (SHP.MULTIPOINT3D):
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bb.position(bb.position() + 32);
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numPoints = bb.getInt(); |
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double[] temX = new double[numPoints]; |
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double[] temY = new double[numPoints]; |
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double[] temZ = new double[numPoints]; |
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for (i = 0; i < numPoints; i++) { |
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temX[i] = bb.getDouble(); |
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temY[i] = bb.getDouble(); |
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// temZ[i] = bb.getDouble();
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} |
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for (i = 0; i < numPoints; i++) { |
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temZ[i] = bb.getDouble(); |
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} |
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|
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MultiPoint multipoint3D = |
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(MultiPoint) gManager.create(TYPES.MULTIPOINT, SUBTYPES.GEOM3D); |
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for (int k = 0; k < temX.length; k++) { |
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Point pointAux =
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(Point) gManager.create(TYPES.POINT, SUBTYPES.GEOM3D);
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pointAux.setX(temX[k]); |
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pointAux.setY(temY[k]); |
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pointAux.setCoordinateAt(2, temZ[k]);
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multipoint3D.addPoint(pointAux); |
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} |
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return multipoint3D;
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} |
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|
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return null; |
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} |
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private void fillPoint(Point point) throws ReadException { |
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if (subType == Geometry.SUBTYPES.GEOM3D) {
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point.setCoordinateAt(Geometry.DIMENSIONS.Z, bb.getDouble()); |
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} else
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if (subType == Geometry.SUBTYPES.GEOM2DM) {
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point.setCoordinateAt(2, bb.getDouble());
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} |
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} |
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|
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private void fillCurve(Curve curve) |
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throws CreateGeometryException, ReadException {
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Point p = null; |
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int numParts;
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int numPoints;
|
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int i;
|
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int j;
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|
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bb.position(bb.position() + 32);
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numParts = bb.getInt(); |
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numPoints = bb.getInt(); |
469 |
|
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int[] tempParts = new int[numParts]; |
471 |
|
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for (i = 0; i < numParts; i++) { |
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tempParts[i] = bb.getInt(); |
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} |
475 |
|
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j = 0;
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|
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for (i = 0; i < numPoints; i++) { |
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p = readPoint(bb); |
480 |
|
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if (i == tempParts[j]) {
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curve.addMoveToVertex(p); |
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|
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if (j < (numParts - 1)) { |
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j++; |
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} |
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} else {
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curve.addVertex(p); |
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} |
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} |
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} |
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|
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private void fillSurface(Surface surface) |
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throws CreateGeometryException, ReadException {
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Point p = null; |
496 |
int numParts;
|
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int numPoints;
|
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int i;
|
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int partIndex;
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|
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bb.position(bb.position() + 32);
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numParts = bb.getInt(); |
503 |
numPoints = bb.getInt(); |
504 |
|
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int[] tempParts = new int[numParts]; |
506 |
|
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for (i = 0; i < numParts; i++) { |
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tempParts[i] = bb.getInt(); |
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} |
510 |
|
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partIndex = 0;
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|
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for (i = 0; i < numPoints; i++) { |
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p = readPoint(bb); |
515 |
|
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if (i == tempParts[partIndex]) {
|
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surface.addMoveToVertex(p); |
518 |
if (partIndex < (numParts - 1)) { |
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partIndex++; |
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} |
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} else {
|
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if ((i == tempParts[partIndex] - 1) || (i == numPoints - 1)) { |
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surface.closePrimitive(); |
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} else {
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surface.addVertex(p); |
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} |
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} |
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} |
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} |
530 |
|
531 |
private void fillZ(OrientablePrimitive orientablePrimitive) |
532 |
throws CreateGeometryException, ReadException {
|
533 |
double[] boxZ = new double[2]; |
534 |
boxZ[0] = bb.getDouble();
|
535 |
boxZ[1] = bb.getDouble();
|
536 |
|
537 |
for (int i = 0; i < orientablePrimitive.getNumVertices(); i++) { |
538 |
orientablePrimitive.setCoordinateAt(i, 2, bb.getDouble());
|
539 |
} |
540 |
} |
541 |
|
542 |
private long getPositionForRecord(long numRec) { |
543 |
// shx file has a 100 bytes header, then, records
|
544 |
// 8 bytes length, one for each entity.
|
545 |
// first 4 bytes are the offset
|
546 |
// next 4 bytes are length
|
547 |
|
548 |
int posIndex = 100 + ((int) numRec * 8); |
549 |
// bbShx.position(posIndex);
|
550 |
long pos = 8 + 2 * bbShx.getInt(posIndex); |
551 |
|
552 |
return pos;
|
553 |
} |
554 |
|
555 |
/**
|
556 |
* Reads the Point from the shape file.
|
557 |
*
|
558 |
* @param in
|
559 |
* ByteBuffer.
|
560 |
*
|
561 |
* @return Point2D.
|
562 |
* @throws ReadException
|
563 |
* @throws CreateGeometryException
|
564 |
*/
|
565 |
private Point readPoint(BigByteBuffer2 in) |
566 |
throws CreateGeometryException, ReadException {
|
567 |
// bytes 1 to 4 are the type and have already been read.
|
568 |
// bytes 4 to 12 are the X coordinate
|
569 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
570 |
|
571 |
return Geometry.SUBTYPES.GEOM2D == subType ? gtypePoint2D.createPoint(
|
572 |
in.getDouble(), in.getDouble()) : gManager.createPoint( |
573 |
in.getDouble(), |
574 |
in.getDouble(), subType); |
575 |
} |
576 |
|
577 |
/**
|
578 |
* Lee un rect?ngulo del fichero.
|
579 |
*
|
580 |
* @param in
|
581 |
* ByteBuffer.
|
582 |
*
|
583 |
* @return Rect?ngulo.
|
584 |
* @throws CreateEnvelopeException
|
585 |
*
|
586 |
* @throws IOException
|
587 |
*/
|
588 |
private Envelope readRectangle(BigByteBuffer2 in)
|
589 |
throws CreateEnvelopeException {
|
590 |
in.order(ByteOrder.LITTLE_ENDIAN);
|
591 |
double x = in.getDouble();
|
592 |
double y = in.getDouble();
|
593 |
|
594 |
double x2 = in.getDouble();
|
595 |
|
596 |
if (x2 - x == 0) { |
597 |
x2 += 0.2;
|
598 |
x -= 0.1;
|
599 |
} |
600 |
|
601 |
double y2 = in.getDouble();
|
602 |
|
603 |
if (y2 - y == 0) { |
604 |
y2 += 0.2;
|
605 |
y -= 0.1;
|
606 |
} |
607 |
Envelope tempEnvelope = |
608 |
gManager.createEnvelope(x, y, x2, y2, SUBTYPES.GEOM2D); |
609 |
return tempEnvelope;
|
610 |
} |
611 |
|
612 |
public Envelope getBoundingBox(long featureIndex) |
613 |
throws ReadException, CreateEnvelopeException, CreateGeometryException {
|
614 |
Point p = null; |
615 |
Envelope BoundingBox = null;
|
616 |
try {
|
617 |
bb.position(getPositionForRecord(featureIndex)); |
618 |
} catch (Exception e) { |
619 |
throw new ReadException("getBondingBox (" + featureIndex + ")", e); |
620 |
// logger.error(" Shapefile is corrupted. Drawing aborted. ="+e+
|
621 |
// " "+"index = "+index);
|
622 |
} |
623 |
bb.order(ByteOrder.LITTLE_ENDIAN);
|
624 |
|
625 |
int tipoShape = bb.getInt();
|
626 |
|
627 |
// AZABALA: si tipoShape viene con valores erroneos deja de funcionar
|
628 |
// el metodo getShape(i)
|
629 |
// if (tipoShape != SHP.NULL) {
|
630 |
// type = tipoShape;
|
631 |
|
632 |
// }
|
633 |
|
634 |
// retrieve that shape.
|
635 |
// tempRecord.setShape(readShape(tempShapeType, tempContentLength, in));
|
636 |
switch (tipoShape) {
|
637 |
case (SHP.POINT2D):
|
638 |
case (SHP.POINT3D):
|
639 |
p = readPoint(bb); |
640 |
BoundingBox = |
641 |
gManager.createEnvelope(p.getX() - 0.1, p.getY() - 0.1, |
642 |
p.getX() + 0.2, p.getY() + 0.2, SUBTYPES.GEOM2D); |
643 |
// new Rectangle2D.Double(p.getX() - 0.1,
|
644 |
// p.getY() - 0.1, 0.2, 0.2);
|
645 |
|
646 |
break;
|
647 |
|
648 |
case (SHP.POLYLINE2D):
|
649 |
case (SHP.POLYGON2D):
|
650 |
case (SHP.MULTIPOINT2D):
|
651 |
case (SHP.POLYLINE3D):
|
652 |
case (SHP.POLYGON3D):
|
653 |
case (SHP.MULTIPOINT3D):
|
654 |
|
655 |
// BoundingBox
|
656 |
BoundingBox = readRectangle(bb); |
657 |
|
658 |
break;
|
659 |
} |
660 |
|
661 |
return BoundingBox;
|
662 |
} |
663 |
|
664 |
/**
|
665 |
* @return
|
666 |
*/
|
667 |
public String getSRSParameters() { |
668 |
return this.srsParameters; |
669 |
} |
670 |
|
671 |
private void initSupportedGeometryTypes() throws ReadException { |
672 |
switch (this.getGeometryType()) { |
673 |
case Geometry.TYPES.POINT:
|
674 |
supportedGeometryTypes = |
675 |
new int[] { Geometry.TYPES.POINT, Geometry.TYPES.NULL }; |
676 |
break;
|
677 |
case Geometry.TYPES.MULTIPOINT:
|
678 |
supportedGeometryTypes = |
679 |
new int[] { Geometry.TYPES.MULTIPOINT, Geometry.TYPES.NULL }; |
680 |
break;
|
681 |
case Geometry.TYPES.MULTICURVE:
|
682 |
supportedGeometryTypes = |
683 |
new int[] { Geometry.TYPES.CURVE, Geometry.TYPES.ELLIPSE, |
684 |
Geometry.TYPES.ARC, Geometry.TYPES.CIRCLE, |
685 |
Geometry.TYPES.SURFACE, Geometry.TYPES.NULL, |
686 |
Geometry.TYPES.MULTICURVE }; |
687 |
break;
|
688 |
case Geometry.TYPES.MULTISURFACE:
|
689 |
supportedGeometryTypes = |
690 |
new int[] { Geometry.TYPES.ELLIPSE, Geometry.TYPES.CIRCLE, |
691 |
Geometry.TYPES.SURFACE, Geometry.TYPES.NULL, |
692 |
Geometry.TYPES.MULTISURFACE }; |
693 |
break;
|
694 |
|
695 |
default:
|
696 |
supportedGeometryTypes = new int[] {}; |
697 |
} |
698 |
} |
699 |
|
700 |
public boolean canWriteGeometry(int gvSIGgeometryType) { |
701 |
for (int i = 0; i < supportedGeometryTypes.length; i++) { |
702 |
if (gvSIGgeometryType == supportedGeometryTypes[i]) {
|
703 |
return true; |
704 |
} |
705 |
} |
706 |
return false; |
707 |
} |
708 |
} |