svn-gvsig-desktop / tags / v10_RC2c / libraries / libFMap / src / com / iver / cit / gvsig / fmap / edition / writers / shp / ShpWriter.java @ 8745
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package com.iver.cit.gvsig.fmap.edition.writers.shp; |
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import java.awt.geom.Rectangle2D; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.RandomAccessFile; |
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import java.nio.channels.FileChannel; |
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import java.nio.channels.WritableByteChannel; |
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import java.sql.Types; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.ITableDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.shp.DbaseFileHeaderNIO; |
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import com.iver.cit.gvsig.fmap.drivers.shp.DbaseFileWriterNIO; |
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import com.iver.cit.gvsig.fmap.drivers.shp.write.SHPFileWrite; |
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import com.iver.cit.gvsig.fmap.drivers.shp.write.ShapefileException; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.edition.IRowEdited; |
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import com.iver.cit.gvsig.fmap.edition.ISpatialWriter; |
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import com.iver.cit.gvsig.fmap.edition.writers.AbstractWriter; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
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import com.iver.cit.gvsig.fmap.layers.SelectableDataSource; |
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public class ShpWriter extends AbstractWriter implements ISpatialWriter { |
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private String shpPath; |
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private String shxPath; |
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private String dbfPath; |
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private File shpFile; |
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private SHPFileWrite shpWrite;
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private DbaseFileWriterNIO dbfWrite;
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private DbaseFileHeaderNIO myHeader;
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private int shapeType; |
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private int numRows; |
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private int fileSize; |
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private Rectangle2D fullExtent; |
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private Object[] record; |
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// private FLyrVect lyrVect;
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private FBitSet selection = null; |
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private boolean bWriteHeaders = true; |
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private int gvSIG_geometryType; |
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private int[] supportedGeometryTypes = {FShape.POINT, |
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FShape.LINE, |
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FShape.MULTIPOINT, |
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FShape.ARC, |
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FShape.CIRCLE, |
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FShape.POLYGON, |
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FShape.TEXT |
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}; |
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public void setFile(File f) |
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{
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shpPath = f.getAbsolutePath(); |
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String strFichshx = f.getAbsolutePath().replaceAll("\\.shp", ".shx"); |
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shxPath = strFichshx.replaceAll("\\.SHP", ".SHX"); |
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String strFichDbf = f.getAbsolutePath().replaceAll("\\.shp", ".dbf"); |
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dbfPath = strFichDbf.replaceAll("\\.SHP", ".DBF"); |
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shpFile = f; |
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} |
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private WritableByteChannel getWriteChannel(String path) |
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throws IOException |
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{
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WritableByteChannel channel;
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File f = new File(path); |
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if (!f.exists()) {
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System.out.println("Creando fichero " + f.getAbsolutePath()); |
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if (!f.createNewFile()) {
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System.err.print("Error al crear el fichero " + |
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f.getAbsolutePath()); |
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throw new IOException("Cannot create file " + f); |
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} |
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} |
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RandomAccessFile raf = new RandomAccessFile(f, "rw"); |
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channel = raf.getChannel(); |
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return channel;
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} |
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/**
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* Util para crear un fichero .shp desde cero.
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* @param lyrDef
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* @throws IOException
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* @throws DriverException
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*/
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/*public ShpWriter(File shpFile, LayerDefinition lyrDef) throws IOException, DriverException
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{
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myHeader = DbaseFileHeaderNIO.createDbaseHeader(lyrDef.getFieldsDesc());
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initialize(shpFile, lyrDef.getShapeType());
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}
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public ShpWriter(File shpFile, FLyrVect lyrVect) throws IOException, DriverException
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{
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SelectableDataSource sds = lyrVect.getRecordset();
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myHeader = DbaseFileHeaderNIO.createDbaseHeader(sds);
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initialize(shpFile, lyrVect.getShapeType());
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}
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*/
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/**
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* Use this function first of all, when you need to prepare a writer
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* having a FLayer as model.
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* IMPORTANT: Call setFile before calling this function.
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* @param lyrVect
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* @throws IOException
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* @throws DriverException
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*/
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public void initialize(FLayer layer) throws EditionException{ |
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if (layer instanceof FLyrVect) |
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{
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FLyrVect lyrVect = (FLyrVect) layer; |
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try {
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SelectableDataSource sds = lyrVect.getRecordset(); |
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myHeader = DbaseFileHeaderNIO.createDbaseHeader(sds); |
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initialize(shpFile, lyrVect.getShapeType()); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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throw new EditionException(e); |
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} catch (DriverException e) {
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e.printStackTrace(); |
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throw new EditionException(e); |
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} |
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} |
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else
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{
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throw new EditionException("No se puede usar una capa que no es vectorial como modelo para escribir un shp."); |
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} |
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} |
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/**
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* Useful to create a layer from scratch
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* Call setFile before using this function
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* @param lyrDef
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* @throws EditionException
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*/
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public void initialize(ITableDefinition lyrDef) throws EditionException |
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{
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super.initialize(lyrDef);
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myHeader = DbaseFileHeaderNIO.createDbaseHeader(lyrDef.getFieldsDesc()); |
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try {
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initialize(shpFile, ((ILayerDefinition)lyrDef).getShapeType()); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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throw new EditionException(e); |
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} |
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} |
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private void initialize(File shpFile, int typeFShape) throws IOException //, FLyrVect lyrVect, FBitSet selection) throws IOException, DriverException |
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{
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// this.lyrVect = lyrVect;
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// this.selection = selection;
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setFile(shpFile); |
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shpWrite = new SHPFileWrite((FileChannel) getWriteChannel(shpPath), |
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(FileChannel) getWriteChannel(shxPath));
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shapeType = shpWrite.getShapeType(typeFShape); |
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gvSIG_geometryType = typeFShape; |
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setSupportedGeometryTypes(); |
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} |
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/**
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*
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*/
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private void setSupportedGeometryTypes() { |
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switch (gvSIG_geometryType)
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{
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case FShape.POINT:
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supportedGeometryTypes = new int[] {FShape.POINT}; |
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break;
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case FShape.MULTIPOINT:
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supportedGeometryTypes = new int[] {FShape.MULTIPOINT}; |
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break;
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case FShape.LINE:
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supportedGeometryTypes = new int[] {FShape.LINE, FShape.ELLIPSE, |
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FShape.ARC, FShape.CIRCLE, FShape.POLYGON}; |
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break;
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case FShape.POLYGON:
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supportedGeometryTypes = new int[] {FShape.ELLIPSE, |
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FShape.CIRCLE, FShape.POLYGON}; |
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break;
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default:
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supportedGeometryTypes = new int[] {}; |
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} |
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} |
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public void preProcess() throws EditionException { |
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// Por ahora solo escribimos los primeros bytes
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// de las cabeceras. Luego en el postprocess los escribiremos
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// correctamente, con el fullExtent y el numero de
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// registros que tocan.
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if (selection == null) |
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{
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try {
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if (bWriteHeaders)
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{
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shpWrite.writeHeaders(new Rectangle2D.Double(), |
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shapeType, 0, 0); |
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} |
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myHeader.setNumRecords(0);
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dbfWrite = new DbaseFileWriterNIO(myHeader,
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(FileChannel) getWriteChannel(dbfPath));
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record = new Object[myHeader.getNumFields()]; |
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numRows = 0;
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fullExtent = null;
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} catch (IOException e) { |
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e.printStackTrace(); |
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throw new EditionException(e); |
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} |
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} |
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} |
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public void process(IRowEdited row) throws EditionException { |
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if (row.getStatus() == IRowEdited.STATUS_DELETED) return; |
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IFeature feat = (IFeature) row.getLinkedRow(); |
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try {
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/* System.out.println("Intento escribir el registro " +
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numRows + " de la capa " + lyrVect.getName()); */
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IGeometry theGeom = feat.getGeometry(); |
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// Revisamos que podemos escribir esa entidad
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// En un shpFile, podemos meter pol?gonos, pero que sean como
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// lineas. En cambio, en uno de puntos solo se pueden meter puntos
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if (canWriteGeometry(theGeom.getGeometryType()))
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{
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for (int i=0; i < record.length; i++) |
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record[i] = feat.getAttribute(i); |
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fileSize = shpWrite.writeIGeometry(theGeom); |
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Rectangle2D boundsShp = theGeom.getBounds2D();
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if (fullExtent == null) { |
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fullExtent = boundsShp; |
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} else {
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fullExtent.add(boundsShp); |
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} |
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dbfWrite.write(record); |
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numRows++; |
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} |
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else
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{
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System.out.println("No se ha escrito la geometr?a " |
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+ row.getIndex() + " geomType=" + theGeom.getGeometryType());
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} |
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} catch (IOException e) { |
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e.printStackTrace(); |
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throw new EditionException(e); |
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} catch (ShapefileException e) {
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e.printStackTrace(); |
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throw new EditionException(e); |
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} |
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} |
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public void postProcess() throws EditionException { |
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try {
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myHeader.setNumRecords(numRows); |
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if (fullExtent == null) |
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fullExtent = new Rectangle2D.Double(); |
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shpWrite.writeHeaders(fullExtent, |
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shapeType, numRows, fileSize); |
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dbfWrite = new DbaseFileWriterNIO(myHeader,
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(FileChannel) getWriteChannel(dbfPath));
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} catch (IOException e) { |
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e.printStackTrace(); |
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throw new EditionException(e); |
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} |
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} |
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/**
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* Devuelve el path del fichero Shp.
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*
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* @author azabala
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* @return shp path
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*/
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public String getShpPath(){ |
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//Lo necesito para que el ShpSchemaManager sepa
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//como "construir" el esquema del fichero SHP/DBF
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//adem?s del ShpLayerDefinition
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//TODO hacer que ShpWriter implemente ISchemaManager
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return this.shpPath; |
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} |
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public String getName() { |
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return "Shape Writer"; |
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} |
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public boolean canWriteGeometry(int gvSIGgeometryType) { |
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/* switch (gvSIGgeometryType)
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{
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case FShape.POINT:
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return true;
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case FShape.LINE:
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return true;
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case FShape.POLYGON:
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return true;
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case FShape.ARC:
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return true; // Pero convirtiendo a segmentos peque?os
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case FShape.ELLIPSE:
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return true; // Pero convirtiendo a segmentos peque?os
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case FShape.MULTIPOINT:
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return true;
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case FShape.TEXT:
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return false;
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} */
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for (int i=0; i < supportedGeometryTypes.length; i++) |
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{
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if (gvSIGgeometryType == supportedGeometryTypes[i] ||
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gvSIGgeometryType == (supportedGeometryTypes[i] | FShape.Z)) // Jaume: support for 3D geometries
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return true; |
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} |
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return false; |
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} |
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public boolean canWriteAttribute(int sqlType) { |
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switch (sqlType)
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{
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case Types.DOUBLE: |
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case Types.FLOAT: |
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case Types.INTEGER: |
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case Types.BIGINT: |
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return true; |
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case Types.DATE: |
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return true; |
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case Types.BIT: |
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case Types.BOOLEAN: |
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return true; |
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case Types.VARCHAR: |
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case Types.CHAR: |
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case Types.LONGVARCHAR: |
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return true; // TODO: Revisar esto, porque no creo que admita campos muy grandes |
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} |
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return false; |
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} |
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/**
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* @param dontWriteHeaders The bDontWriteHeaders to set.
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*/
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public void setWriteHeaders(boolean bWriteHeaders) { |
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this.bWriteHeaders = bWriteHeaders;
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} |
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// public void setFlatness(double flatness) {
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// shpWrite.setFlatness(flatness);
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//
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// }
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public boolean canAlterTable() { |
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return true; |
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} |
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public boolean canSaveEdits() { |
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if (shpFile.canWrite())
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{
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File auxShx = new File(shxPath); |
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if (auxShx.canWrite())
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{
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File auxDbf = new File(dbfPath); |
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if (auxDbf.canWrite())
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return true; |
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} |
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} |
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return false; |
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} |
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} |