gvsig-geoprocess / org.gvsig.sextante / trunk / org.gvsig.sextante.app / org.gvsig.sextante.app.extension / src / main / java / org / gvsig / sextante / app / extension / core / gvGeoAlgorithm.java @ 50
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package org.gvsig.sextante.app.extension.core; |
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import java.util.Iterator; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.geom.Geometry; |
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import es.unex.sextante.core.GeoAlgorithm; |
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import es.unex.sextante.core.Sextante; |
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import es.unex.sextante.dataObjects.IVectorLayer; |
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import es.unex.sextante.exceptions.UnsupportedOutputChannelException; |
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/**
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* Base class for gvSIG algorithms
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public abstract class gvGeoAlgorithm extends GeoAlgorithm implements IProgressModel { |
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protected String[] attrNames = null; |
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private int nSteps = 0; |
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/**
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* Builds the output FeatureStore
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* @param featureType
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* @return FeatureStore
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*/
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@SuppressWarnings("unchecked") |
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protected FeatureStore buildOutPutStore(FeatureType featureType,
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int shapeType,
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String sextanteLayerName,
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String sextanteLayerLabel) {
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Class [] types = null; |
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if(featureType.getDefaultGeometryAttribute() != null) { //Tiene campo GEOMETRY. Hay que quitarlo |
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attrNames = new String[featureType.size() - 1]; |
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types = new Class[featureType.size() - 1]; |
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} else {
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attrNames = new String[featureType.size()]; |
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types = new Class[featureType.size()]; |
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} |
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int i = 0; |
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Iterator it = featureType.iterator();
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while( it.hasNext() ) {
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FeatureAttributeDescriptor attribute = (FeatureAttributeDescriptor)it.next(); |
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if(attribute.getName().compareTo("GEOMETRY") != 0) { |
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attrNames[i] = attribute.getName(); |
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types[i] = attribute.getObjectClass(); |
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i++; |
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} |
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} |
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try {
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IVectorLayer output = getNewVectorLayer(sextanteLayerLabel, |
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sextanteLayerName, |
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shapeType, types, attrNames); |
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return ((gvVectorLayer)output).getFeatureStore();
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} catch (UnsupportedOutputChannelException e) {
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Sextante.addErrorToLog(e); |
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} |
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return null; |
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} |
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/**
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* Builds the output FeatureStore
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* @param featureType
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* @return FeatureStore
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*/
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@SuppressWarnings("unchecked") |
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protected FeatureStore buildOutPutStoreFromUnion(FeatureType featureType1,
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FeatureType featureType2, |
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int shapeType,
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String sextanteLayerName,
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String sextanteLayerLabel) {
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Class [] types = null; |
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if(featureType1.getDefaultGeometryAttribute() != null) { //Tiene campo GEOMETRY. Hay que quitarlo |
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attrNames = new String[featureType1.size() + featureType2.size() - 2]; |
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types = new Class[featureType1.size() + featureType2.size() - 2]; |
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} else {
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attrNames = new String[featureType1.size() + featureType2.size()]; |
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types = new Class[featureType1.size() + featureType2.size()]; |
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} |
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int i = 0; |
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Iterator it = featureType1.iterator();
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while( it.hasNext() ) {
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FeatureAttributeDescriptor attribute = (FeatureAttributeDescriptor)it.next(); |
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if(attribute.getName().compareTo("GEOMETRY") != 0) { |
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attrNames[i] = attribute.getName(); |
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types[i] = attribute.getObjectClass(); |
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i++; |
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} |
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} |
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it = featureType2.iterator(); |
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while( it.hasNext() ) {
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FeatureAttributeDescriptor attribute = (FeatureAttributeDescriptor)it.next(); |
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if(attribute.getName().compareTo("GEOMETRY") != 0) { |
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String attrName = checkAttrName(attribute.getName(), featureType1.size() - 1); |
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attrNames[i] = attrName; |
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types[i] = attribute.getObjectClass(); |
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i++; |
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} |
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} |
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try {
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IVectorLayer output = getNewVectorLayer(sextanteLayerLabel, |
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sextanteLayerName, |
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shapeType, types, attrNames); |
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return ((gvVectorLayer)output).getFeatureStore();
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} catch (UnsupportedOutputChannelException e) {
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Sextante.addErrorToLog(e); |
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} |
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return null; |
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} |
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/**
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* Changes the attribute name if this name is in the list.
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* @param name
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* @return
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*/
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private String checkAttrName(String name, int size) { |
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String newName = name;
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for (int i = 0; i < size; i++) |
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if(attrNames[i].compareTo(newName) == 0) |
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newName = newName + "I";
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return newName;
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} |
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/*
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* (non-Javadoc)
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* @see es.unex.sextante.core.GeoAlgorithm#getOutputFilename(es.unex.sextante.outputs.Output)
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*/
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/*protected String getOutputFilename(Output out) {
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IOutputChannel channel = out.getOutputChannel();
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String sFilename = null;
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if(channel.getParameters() instanceof String)
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sFilename = (String)((IOutputChannel)channel).getParameters();
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else
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if(channel.getParameters() instanceof FilesystemStoreParameters)
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sFilename = ((FilesystemStoreParameters)channel.getParameters()).getFile().getAbsolutePath();
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if (sFilename == null){
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return null;
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}
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String[] exts = null;
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if (out instanceof OutputRasterLayer){
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exts = m_OutputFactory.getRasterLayerOutputExtensions();
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}
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else if (out instanceof OutputVectorLayer){
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exts = m_OutputFactory.getVectorLayerOutputExtensions();
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}
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else if (out instanceof OutputTable){
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exts = m_OutputFactory.getTableOutputExtensions();
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}
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else{
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return null;
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}
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for (int i = 0; i < exts.length; i++) {
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if (sFilename.endsWith(exts[i])){
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return sFilename;
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}
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}
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return sFilename + "." + exts[0];
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}*/
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/*
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* (non-Javadoc)
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* @see es.unex.sextante.core.GeoAlgorithm#getOutputChannel(java.lang.String)
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*/
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/*protected IOutputChannel getOutputChannel(String sName) {
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Output out = null;
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IOutputChannel channel = null;
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try {
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out = m_OutputObjects.getOutput(sName);
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channel = out.getOutputChannel();
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if (channel == null)
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return new FileOutputChannel(m_OutputFactory.getTempFilename(out));
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else {
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String sFilename = getOutputFilename(out);
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if (sFilename == null) {
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if(channel instanceof CompositeSourceOutputChannel)
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return channel;
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return new FileOutputChannel(m_OutputFactory.getTempFilename(out));
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} else {
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if(channel instanceof FileOutputChannel)
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((FileOutputChannel) channel).setFilename(sFilename);
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return channel;
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}
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}
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} catch (WrongOutputIDException e) {
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return null;
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}
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}*/
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/**
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* Gets the shape type of the selected feature store
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* @param FeatureStore source
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* @return shape type
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* @throws ReadException
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*/
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protected int getShapeType(FeatureStore storeLayer1) throws ReadException { |
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FeatureType featureType; |
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try {
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featureType = storeLayer1.getDefaultFeatureType(); |
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} catch (DataException e) {
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throw new ReadException(storeLayer1.getName(), e); |
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} |
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int indexGeom = featureType.getDefaultGeometryAttributeIndex();
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return featureType.getAttributeDescriptor(indexGeom).getGeometryType();
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} |
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/**
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* Returns true if it is a point layer
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* @param store
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* @return
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* @throws ReadException
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*/
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protected boolean isPoint(FeatureStore store) throws ReadException { |
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return (getShapeType(store) == Geometry.TYPES.POINT || getShapeType(store) == Geometry.TYPES.MULTIPOINT);
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} |
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/**
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* Returns true if it is a polygon layer
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* @param store
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* @return
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* @throws ReadException
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*/
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protected boolean isPolygon(FeatureStore store) throws ReadException { |
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return (getShapeType(store) == Geometry.TYPES.SURFACE || getShapeType(store) == Geometry.TYPES.MULTISURFACE);
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} |
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/**
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* Returns true if it is a line layer
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* @param store
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* @return
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* @throws ReadException
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*/
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protected boolean isLine(FeatureStore store) throws ReadException { |
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return (getShapeType(store) == Geometry.TYPES.CURVE || getShapeType(store) == Geometry.TYPES.MULTICURVE);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.sextante.app.algorithm.base.core.IProgressAdapter#setProgress(int)
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*/
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public void setProgress(int iStep) { |
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super.setProgress(iStep, nSteps);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.sextante.app.algorithm.base.core.IProgressAdapter#setTotalNumberOfSteps(int)
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*/
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public void setTotalNumberOfSteps(int nSteps) { |
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this.nSteps = nSteps;
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} |
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} |