svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.app / org.gvsig.app.mainplugin / src / main / java / org / gvsig / app / project / symboltables / ProjectSymbolTable.java @ 44129
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package org.gvsig.app.project.symboltables; |
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|
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Properties; |
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import org.apache.commons.io.IOUtils; |
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import org.apache.commons.lang3.Range; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.app.ApplicationLocator; |
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import org.gvsig.app.ApplicationManager; |
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import org.gvsig.app.project.Project; |
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import org.gvsig.app.project.ProjectManager; |
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import org.gvsig.app.project.documents.Document; |
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import org.gvsig.app.project.documents.view.ViewDocument; |
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import org.gvsig.app.project.documents.view.ViewManager; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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import org.gvsig.expressionevaluator.spi.AbstractSymbolTable; |
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import org.gvsig.fmap.crs.CRSFactory; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureSelection; |
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import org.gvsig.fmap.dal.feature.FeatureSet; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.mapcontext.MapContext; |
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import org.gvsig.fmap.mapcontext.layers.FLayer; |
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import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect; |
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import org.gvsig.fmap.mapcontrol.AreaAndPerimeterCalculator; |
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import org.gvsig.temporarystorage.TemporaryStorageGroup; |
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import org.gvsig.temporarystorage.TemporaryStorageLocator; |
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import org.gvsig.temporarystorage.TemporaryStorageManager; |
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|
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/**
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*
|
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* @author jjdelcerro
|
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*/
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@SuppressWarnings("UseSpecificCatch") |
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public class ProjectSymbolTable extends AbstractSymbolTable { |
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|
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public static final String AREA_NAME = "AREA"; |
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public static final String PERIMETER_NAME = "PERIMETER"; |
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public static final String FIRSTLAYERFEATURE_NAME = "FirstLayerFeature"; |
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|
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static final String NAME = "Project"; |
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|
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private abstract class CachedValue<T> { |
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|
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T value = null;
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long lastAccess = 0; |
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|
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protected abstract void reload(); |
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|
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public boolean isExpired() { |
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long now = System.currentTimeMillis(); |
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return now - lastAccess > 3000; |
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} |
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|
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public T get() {
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if (isExpired()) {
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reload(); |
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} |
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lastAccess = System.currentTimeMillis();
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return value;
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} |
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} |
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|
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private class ProjectValue extends CachedValue<Project> { |
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|
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@Override
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protected void reload() { |
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value = ProjectManager.getInstance().getCurrentProject(); |
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} |
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|
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} |
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|
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private class CurrentViewValue extends CachedValue<ViewDocument> { |
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|
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@Override
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protected void reload() { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
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value = viewdoc; |
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} |
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|
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} |
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|
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private class CurrentViewEnvelopeValue extends CachedValue<Geometry> { |
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|
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@Override
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protected void reload() { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
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if( viewdoc == null ) { |
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value = null;
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return;
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} |
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value = viewdoc.getMapContext().getViewPort().getEnvelope().getGeometry(); |
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} |
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|
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} |
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private class PropertiesValue extends CachedValue<Map<File, Properties>> { |
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@Override
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protected void reload() { |
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value = new HashMap<>(); |
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} |
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} |
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private class CurrentProjectFunction extends AbstractFunction { |
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|
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public CurrentProjectFunction() {
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super(
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"Project",
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"project",
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Range.is(0),
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"Access to the current project loaded in gvSIG desktop.\n",
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"project()",
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null,
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"Project"
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); |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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return currentProject.get();
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} |
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|
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} |
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private class FirstSelectedFeatureFunction extends AbstractFunction { |
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public FirstSelectedFeatureFunction() {
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super(
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"Project",
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"firstSelectedFeature",
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Range.between(3, 4), |
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"Access to the first selected feature of the layer, and "
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+ "return the value of the attribute.",
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"firstSelectedFeature({{view}}, layer, attribute, defaulValue)",
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new String[]{ |
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"view - String value with the name of a view",
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"layer - String value with the name of a layer in the indicated view",
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"attribute - String value with the name of the attribute in the indicated layer",
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"defaultValue - Optional. Value to use if the indicated "
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+ "attribute can not be accessed. For example, if the "
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+ "view or layer does not exist, or it does not have "
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+ "selected elements."
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}, |
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"Object"
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); |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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Object defaultValue = null; |
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String viewName = getStr(args, 0); |
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String layerName = getStr(args, 1); |
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String attrName = getStr(args, 2); |
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if (args.length == 4) { |
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defaultValue = getObject(args, 3);
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} |
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try {
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Project project = currentProject.get(); |
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ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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if (view == null) { |
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return defaultValue;
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} |
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FLayer layer = view.getLayer(layerName); |
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if (!(layer instanceof FLyrVect)) { |
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return defaultValue;
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} |
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FeatureSelection selection = ((FLyrVect) layer).getFeatureStore().getFeatureSelection(); |
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if (selection == null || selection.isEmpty()) { |
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return defaultValue;
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} |
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Feature feature = selection.first(); |
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if (feature == null) { |
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return defaultValue;
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} |
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return feature.get(attrName);
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} catch (Exception ex) { |
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return defaultValue;
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} |
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} |
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|
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} |
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private class FirstLayerFeatureFunction extends AbstractFunction { |
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public FirstLayerFeatureFunction() {
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super(
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"Project",
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FIRSTLAYERFEATURE_NAME, |
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Range.between(3, 6), |
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"Access to the first feature of the layer, and "
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+ "return the value of the attribute.",
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FIRSTLAYERFEATURE_NAME+"({{view}}, layer, attribute, filter, order, defaulValue)",
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new String[]{ |
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"view - String value with the name of a view",
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"layer - String value with the name of a layer in the indicated view",
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"attribute - String value with the name of the attribute in the indicated layer",
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"filter - Optional. String value with a filter expression",
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"order - Optional. String value with the order. must be a string with the names of separate fields with commas",
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"defaultValue - Optional. Value to use if the indicated "
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+ "attribute can not be accessed. For example, if the "
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+ "view or layer does not exist."
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}, |
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"Object"
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); |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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Object defaultValue = null; |
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String filter = null; |
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String order = null; |
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String viewName = getStr(args, 0); |
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String layerName = getStr(args, 1); |
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String attrName = getStr(args, 2); |
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switch (args.length) {
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case 4: |
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filter = getStr(args, 3);
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break;
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case 5: |
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filter = getStr(args, 3);
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order = getStr(args, 4);
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break;
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case 6: |
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filter = getStr(args, 3);
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order = getStr(args, 4);
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defaultValue = getObject(args, 6);
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break;
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} |
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try {
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Project project = currentProject.get(); |
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ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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if (view == null) { |
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return defaultValue;
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} |
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FLayer layer = view.getLayer(layerName); |
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if (!(layer instanceof FLyrVect)) { |
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return defaultValue;
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} |
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FeatureStore store = ((FLyrVect) layer).getFeatureStore(); |
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FeatureSet set; |
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if (filter == null && order == null) { |
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set = store.getFeatureSet(); |
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} else {
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FeatureQuery query = store.createFeatureQuery(); |
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if (filter != null) { |
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query.addFilter(filter); |
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} |
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if (order != null) { |
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query.getOrder().add(order); |
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} |
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query.retrievesAllAttributes(); |
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set = store.getFeatureSet(query); |
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} |
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Feature feature = set.first(); |
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if (feature == null) { |
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return defaultValue;
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} |
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return feature.get(attrName);
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} catch (Exception ex) { |
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return defaultValue;
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} |
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} |
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|
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} |
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|
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private class ViewFunction extends AbstractFunction { |
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|
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public ViewFunction() {
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super(
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"Project",
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"view",
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Range.is(1),
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"Access to the indicated view",
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"view({{viewName}})",
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new String[]{ |
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"view - String value with the name of a view"
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}, |
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"DocumentView"
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); |
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} |
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|
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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String viewName = getStr(args, 0); |
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Project project = currentProject.get(); |
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ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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return view;
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} |
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|
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} |
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|
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private class ViewBBoxFunction extends AbstractFunction { |
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|
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public ViewBBoxFunction() {
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super(
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"Project",
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"viewbbox",
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Range.is(0),
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"Return the BBox of the active view.",
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"viewbbox()",
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null,
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"Geometry"
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); |
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} |
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|
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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return currentViewEnvelope.get();
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} |
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|
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} |
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|
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|
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private class SavedPointFunction extends AbstractFunction { |
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|
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public SavedPointFunction() {
|
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super(
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"Project",
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"savedpoint",
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Range.is(1),
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"Return the value of the saved point with the name indicated.\n"
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+ "If the named point do not exists return null.",
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"savedpoint({{name}})",
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new String[]{ |
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"name - String value with the name of the point"
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}, |
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"Geometry"
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); |
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} |
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|
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@Override
|
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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TemporaryStorageManager manager = TemporaryStorageLocator.getTemporaryStorageManager(); |
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TemporaryStorageGroup storage = manager.create("Points",Point.class); |
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Geometry value = (Geometry) storage.get(getStr(args, 0));
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return value;
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} |
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|
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} |
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|
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private class AreaFunction extends AbstractFunction { |
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|
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public AreaFunction() {
|
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super(
|
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"Project",
|
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AREA_NAME, |
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Range.between(2,3), |
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"Calculate the area of the geometry in the indicated units",
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AREA_NAME+"({{geometry}}, 'm?')",
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new String[]{ |
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"geometry - Geometry",
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"Projection - Optional. Projection of the geometry or a string with the projection name",
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"units - String value with the name the units to use"
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}, |
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"Double"
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); |
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} |
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|
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@Override
|
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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int units = 0; |
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IProjection proj = null;
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Geometry geom = getGeom(args, 0);
|
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switch( args.length ) {
|
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case 2: |
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units = getUnits(args, 1);
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break;
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case 3: |
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proj = getProjection(args, 1);
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units = getUnits(args, 2);
|
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break;
|
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} |
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if (proj == null) { |
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proj = geom.getProjection(); |
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} |
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AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
|
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double area = calculator.area(geom, proj, units);
|
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return area;
|
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} |
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} |
392 |
|
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private class PerimeterFunction extends AbstractFunction { |
394 |
|
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public PerimeterFunction() {
|
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super(
|
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"Project",
|
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PERIMETER_NAME, |
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Range.between(2,3), |
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"Calculate the perimeter of the geometry in the indicated units",
|
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PERIMETER_NAME+"({{geometry}}, 'm')",
|
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new String[]{ |
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"geometry - Geometry",
|
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"Projection - Optional. Projection of the geometry or a string with the projection name",
|
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"units - String value with the name the units to use"
|
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}, |
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"Double"
|
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); |
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} |
410 |
|
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@Override
|
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
413 |
int units = 0; |
414 |
IProjection proj = null;
|
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Geometry geom = getGeom(args, 0);
|
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switch( args.length ) {
|
417 |
case 2: |
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units = getUnits(args, 1);
|
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break;
|
420 |
case 3: |
421 |
proj = getProjection(args, 1);
|
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units = getUnits(args, 2);
|
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break;
|
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} |
425 |
if (proj == null) { |
426 |
proj = geom.getProjection(); |
427 |
} |
428 |
AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
|
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double area = calculator.perimeter(geom, proj, units);
|
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return area;
|
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} |
432 |
} |
433 |
|
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private class PropertyFunction extends AbstractFunction { |
435 |
|
436 |
public PropertyFunction() {
|
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super(
|
438 |
"Project",
|
439 |
"property",
|
440 |
Range.between(2, 3), |
441 |
"Access to a property value in a properties file. If the"
|
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+ "indicated filename is not absolute, access it relative"
|
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+ "to the project.",
|
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"property({{filename}}, name, defaultValue)",
|
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new String[]{ |
446 |
"filename - String value with the name of the properties file",
|
447 |
"name - String value with the name of the property to retrieve from the file",
|
448 |
"defaultValue - Optional. Default value if can't access the file or the property",},
|
449 |
"String"
|
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); |
451 |
} |
452 |
|
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@Override
|
454 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
455 |
String filename = getStr(args, 0); |
456 |
String name = getStr(args, 1); |
457 |
String defaultValue = null; |
458 |
if (args.length == 3) { |
459 |
defaultValue = getStr(args, 2);
|
460 |
} |
461 |
|
462 |
File file = new File(filename); |
463 |
if (!file.isAbsolute()) {
|
464 |
Project project = currentProject.get(); |
465 |
if (project.getFile() == null) { |
466 |
return defaultValue;
|
467 |
} |
468 |
file = new File(project.getFile().getParent(), filename); |
469 |
} |
470 |
Map<File, Properties> x = propertiesFiles.get(); |
471 |
Properties properties = x.get(file);
|
472 |
if (properties == null) { |
473 |
properties = new Properties(); |
474 |
FileInputStream in = null; |
475 |
try {
|
476 |
in = new FileInputStream(file); |
477 |
properties.load(in); |
478 |
} catch (Exception ex) { |
479 |
return defaultValue;
|
480 |
} finally {
|
481 |
IOUtils.closeQuietly(in); |
482 |
} |
483 |
x.put(file, properties); |
484 |
} |
485 |
String value = properties.getProperty(name, defaultValue);
|
486 |
return value;
|
487 |
} |
488 |
|
489 |
} |
490 |
|
491 |
ProjectValue currentProject = new ProjectValue();
|
492 |
CurrentViewValue currentView = new CurrentViewValue();
|
493 |
CurrentViewEnvelopeValue currentViewEnvelope = new CurrentViewEnvelopeValue();
|
494 |
PropertiesValue propertiesFiles = new PropertiesValue();
|
495 |
|
496 |
@SuppressWarnings("OverridableMethodCallInConstructor") |
497 |
public ProjectSymbolTable() {
|
498 |
super(NAME);
|
499 |
this.addFunction(new CurrentProjectFunction()); |
500 |
this.addFunction(new FirstSelectedFeatureFunction()); |
501 |
this.addFunction(new FirstLayerFeatureFunction()); |
502 |
this.addFunction(new ViewFunction()); |
503 |
this.addFunction(new ViewBBoxFunction()); |
504 |
this.addFunction(new PropertyFunction()); |
505 |
this.addFunction(new AreaFunction()); |
506 |
this.addFunction(new PerimeterFunction()); |
507 |
this.addFunction(new SavedPointFunction()); |
508 |
} |
509 |
|
510 |
private MapContext getMapContext(Feature feature) {
|
511 |
FeatureStore store = feature.getStore(); |
512 |
Project project = ProjectManager.getInstance().getCurrentProject(); |
513 |
project.getDocuments(ViewManager.TYPENAME); |
514 |
for (Document document : project.getDocuments(ViewManager.TYPENAME)) { |
515 |
ViewDocument view = (ViewDocument) document; |
516 |
MapContext mapContext = view.getMapContext(); |
517 |
FLayer layer = getLayer(mapContext, store); |
518 |
if (layer != null) { |
519 |
return mapContext;
|
520 |
} |
521 |
} |
522 |
return null; |
523 |
} |
524 |
|
525 |
private FLayer getLayer(MapContext mapContext, FeatureStore store) {
|
526 |
Iterator<FLayer> it = mapContext.deepiterator();
|
527 |
while (it.hasNext()) {
|
528 |
FLayer layer = it.next(); |
529 |
if (layer instanceof FLyrVect) { |
530 |
FeatureStore layer_store = ((FLyrVect) layer).getFeatureStore(); |
531 |
if (layer_store == store) {
|
532 |
return layer;
|
533 |
} |
534 |
} |
535 |
} |
536 |
return null; |
537 |
} |
538 |
|
539 |
private IProjection getProjection(Object[] args, int i) { |
540 |
Object value = args[i];
|
541 |
if (value == null) { |
542 |
return null; |
543 |
} |
544 |
if (value instanceof IProjection) { |
545 |
return (IProjection) value;
|
546 |
} |
547 |
String code = value.toString();
|
548 |
return CRSFactory.getCRS(code);
|
549 |
} |
550 |
|
551 |
private int getUnits(Object[] args, int i) { |
552 |
Object value = args[i];
|
553 |
if (value == null) { |
554 |
throw new IllegalArgumentException("Illegal unit value 'null'"); |
555 |
} |
556 |
if (value instanceof Number) { |
557 |
return ((Number) value).intValue(); |
558 |
} |
559 |
String name = value.toString();
|
560 |
String[] names = MapContext.getAreaAbbr(); |
561 |
for (int j = 0; j < names.length; j++) { |
562 |
if (name.equalsIgnoreCase(names[j])) {
|
563 |
return j;
|
564 |
} |
565 |
} |
566 |
names = MapContext.getAreaNames(); |
567 |
for (int j = 0; j < names.length; j++) { |
568 |
if (name.equalsIgnoreCase(names[j])) {
|
569 |
return j;
|
570 |
} |
571 |
} |
572 |
throw new IllegalArgumentException("Illegal unit name '" + name + "'"); |
573 |
} |
574 |
|
575 |
} |