root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / shp / write / SHPSHXFromSelectedVisitor.java @ 1132
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.drivers.shp.write; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
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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.SelectableDataSource; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.Selectable; |
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import com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.OutputStream; |
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import java.io.RandomAccessFile; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.nio.channels.Channels; |
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import java.nio.channels.FileChannel; |
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import java.nio.channels.WritableByteChannel; |
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/**
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* Visitor de creaci?n de un shape de los elementos seleccionados.
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*
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* @author Vicente Caballero Navarro
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*/
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public class SHPSHXFromSelectedVisitor implements FeatureVisitor { |
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private IGeometry[] fgs = null; |
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private SelectableDataSource sds = null; |
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private URL shpURL = null; |
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private URL shxURL = null; |
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private int temp = 0; |
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private int type; |
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private FBitSet bitset = null; |
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private int num = 0; |
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/**
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* DOCUMENT ME!
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*
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* @param f DOCUMENT ME!
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*/
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public void setFile(File f) { |
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try {
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shpURL = f.toURL(); |
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String strFichshx = f.getAbsolutePath().replaceAll("\\.shp", ".shx"); |
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strFichshx = strFichshx.replaceAll("\\.SHP", ".SHX"); |
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shxURL = new URL("file://" + strFichshx); |
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} catch (MalformedURLException e) { |
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e.printStackTrace(); |
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} |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param layer DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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/*public void setType(int i) {
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type = i;
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}
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*/
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/**
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* Inicializa el visitor.
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*
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* @param layer Capa.
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*
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* @return True si se inicializa correctamente.
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*/
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public boolean start(FLayer layer) { |
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if (layer instanceof AlphanumericData && layer instanceof Selectable) { |
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try {
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sds = ((AlphanumericData) layer).getRecordset(); |
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bitset = ((Selectable) layer).getSelection(); |
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///fgs = new IGeometry[(int) sds.getRowCount()];
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fgs = new IGeometry[bitset.cardinality()];
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///} catch (DriverException e) {
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/// e.printStackTrace();
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} catch (com.iver.cit.gvsig.fmap.DriverException e) {
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e.printStackTrace(); |
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} |
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return true; |
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} |
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return false; |
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} |
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/**
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* Finaliza el visitor.
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*
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* @param layer Capa.
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*/
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public void stop(FLayer layer) { |
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SHPFileWrite filewrite; |
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try {
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filewrite = new SHPFileWrite((FileChannel) getWriteChannel( |
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getStorageURL(shpURL)), |
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(FileChannel) getWriteChannel(getStorageURL(shxURL)));
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if (fgs.length > 0) { |
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type = getTypeShape(fgs[0].getGeometryType());
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filewrite.write(fgs, type); |
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} |
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} catch (ShapefileException e1) {
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e1.printStackTrace(); |
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} catch (MalformedURLException e) { |
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e.printStackTrace(); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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System.out.println("Acabado SHP y SHX"); |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#visit(com.iver.cit.gvsig.fmap.core.IGeometry,
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* int)
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*/
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public void visit(IGeometry g, int index) throws VisitException { |
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if (bitset.get(index)) {
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fgs[num] = g; |
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num++; |
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} |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param url DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*
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* @throws java.net.MalformedURLException DOCUMENT ME!
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*/
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protected URL getStorageURL(URL url) throws java.net.MalformedURLException { |
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return (temp == 0) ? url : getStorageFile(url).toURL(); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param url DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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private WritableByteChannel getWriteChannel(URL url) |
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throws IOException { |
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WritableByteChannel channel;
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if (url.getProtocol().equals("file")) { |
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File f = new File(url.getFile()); |
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if (!f.exists() && !f.createNewFile()) {
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throw new IOException("Cannot create file " + f); |
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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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} else {
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OutputStream out = url.openConnection().getOutputStream();
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channel = Channels.newChannel(out);
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} |
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return channel;
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} |
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/**
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* DOCUMENT ME!
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*
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* @param url DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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protected File getStorageFile(URL url) { |
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String f = url.getFile();
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f = temp + f.substring(f.lastIndexOf("/") + 1); |
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File tf = new File(System.getProperty("java.io.tmpdir"), f); |
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return tf;
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} |
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public IGeometry[] getGeometries() { |
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return fgs;
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} |
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/**
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* DOCUMENT ME!
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*
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* @param geometryType DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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private int getTypeShape(int geometryType) { |
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switch (geometryType) {
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case FShape.POINT:
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return FConstant.SHAPE_TYPE_POINT;
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case FShape.LINE:
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return FConstant.SHAPE_TYPE_POLYLINE;
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case FShape.POLYGON:
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return FConstant.SHAPE_TYPE_POLYGON;
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case FShape.MULTI:
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return 0; //TODO falta aclarar cosas aqu?. |
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} |
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return FConstant.SHAPE_TYPE_NULL;
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} |
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public SelectableDataSource getSDS() {
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return sds;
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} |
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} |