root / trunk / extensions / extExpressionField / src / com / iver / cit / gvsig / project / documents / table / gui / EvalExpression.java @ 36459
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package com.iver.cit.gvsig.project.documents.table.gui; |
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import java.awt.Component; |
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import java.io.UnsupportedEncodingException; |
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import java.sql.Types; |
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import java.util.ArrayList; |
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import java.util.BitSet; |
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import java.util.Date; |
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import java.util.prefs.Preferences; |
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import javax.swing.JOptionPane; |
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import org.apache.bsf.BSFException; |
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import org.apache.bsf.BSFManager; |
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import com.hardcode.gdbms.driver.exceptions.InitializeWriterException; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.hardcode.gdbms.engine.values.ValueFactory; |
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import com.iver.andami.PluginServices; |
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import com.iver.andami.messages.NotificationManager; |
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import com.iver.cit.gvsig.EditionUtilities; |
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import com.iver.cit.gvsig.ExpressionFieldExtension; |
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import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException; |
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import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileWriteException; |
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import com.iver.cit.gvsig.exceptions.validate.ValidateRowException; |
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import com.iver.cit.gvsig.exceptions.visitors.StopWriterVisitorException; |
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import com.iver.cit.gvsig.fmap.core.IRow; |
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import com.iver.cit.gvsig.fmap.drivers.FieldDescription; |
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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.edition.DefaultRowEdited; |
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import com.iver.cit.gvsig.fmap.edition.EditionEvent; |
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import com.iver.cit.gvsig.fmap.edition.IEditableSource; |
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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.IWriteable; |
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import com.iver.cit.gvsig.fmap.edition.IWriter; |
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import com.iver.cit.gvsig.fmap.edition.VectorialEditableAdapter; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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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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import com.iver.cit.gvsig.project.documents.table.IOperator; |
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import com.iver.cit.gvsig.project.documents.table.Index; |
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/**
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* This class implements the logic of a expression and fill a field of the table
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*
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* To use this class to evaluate and execute an expression something like this
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* can be done:
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*
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* ExpressionFieldExtension efe = (ExpressionFieldExtension)
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* PluginServices.getExtension(ExpressionFieldExtension.class);
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*
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* EvalExpression ee = new EvalExpression(efe.getInterpreter(), efe.getOperators());
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* ToggleEditing te = new ToggleEditing();
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* // put the layer in edition mode
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* te.startEditing(layer);
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* ee.setLayer(layer, 7);
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* ee.evalExpression("toUpperCase([NOME_MAPA])");
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* // close edition mode and save the layer
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* te.stopEditing(layer, false);
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*
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* @author Vicente Caballero Navarro
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*/
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public class EvalExpression { |
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private FieldDescription[] fieldDescriptors; |
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private FieldDescription fieldDescriptor;
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private FLyrVect layer;
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private IEditableSource ies =null; |
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private static Preferences prefs = Preferences.userRoot().node( "fieldExpressionOptions" ); |
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private int limit; |
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private SelectableDataSource sds;
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private BSFManager interpreter;
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private Index indexRow;
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private int selectedIndex; |
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private Table table;
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private ArrayList<IOperator> operators = new ArrayList<IOperator>(); |
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/**
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* @deprecated
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*/
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public EvalExpression() {
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limit=prefs.getInt("limit_rows_in_memory",-1); |
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} |
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public EvalExpression(BSFManager interpreter, ArrayList<IOperator> operators) { |
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limit=prefs.getInt("limit_rows_in_memory",-1); |
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this.interpreter = interpreter;
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this.operators = operators;
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} |
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/**
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*
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* @param layer
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* Must be in edition or a ClassCastException will be thrown
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* @param selectedIndex
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* The index of the field in the FieldDescription which will be
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* filled by the expression
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*/
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public void setLayer(FLyrVect layer, int selectedIndex) { |
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this.layer = layer;
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ies = (VectorialEditableAdapter) layer.getSource(); |
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this.selectedIndex = selectedIndex;
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init(); |
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} |
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public void setTable(Table table) { |
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// TODO: table is only needed to make table.refresh on the dialog.
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// Probably a fireevent can be done to avoid this
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this.table = table;
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layer = (FLyrVect) table.getModel().getAssociatedTable(); |
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if (layer == null) |
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ies=table.getModel().getModelo(); |
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else
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ies = (VectorialEditableAdapter) layer.getSource(); |
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BitSet columnSelected = table.getSelectedFieldIndices();
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selectedIndex = columnSelected.nextSetBit(0);
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init(); |
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} |
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private void init() { |
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try {
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sds = ies.getRecordset(); |
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fieldDescriptors = sds.getFieldsDescription(); |
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fieldDescriptor = fieldDescriptors[selectedIndex]; |
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interpreter.declareBean("sds", sds,SelectableDataSource.class);
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indexRow=new Index();
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interpreter.declareBean("indexRow", indexRow,Index.class);
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} catch (BSFException e) {
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e.printStackTrace(); |
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} catch (ReadDriverException e) {
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e.printStackTrace(); |
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} |
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} |
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public void setValue(Object obj,int i) { |
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//VectorialEditableAdapter vea = (VectorialEditableAdapter) lv.getSource();
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Value value = getValue(obj); |
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IRow feat=null;
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try {
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feat = ies.getRow(i).getLinkedRow().cloneRow(); |
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} catch (ExpansionFileReadException e) {
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NotificationManager.addError(e); |
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} catch (ReadDriverException e) {
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NotificationManager.addError(e); |
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} |
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Value[] values = feat.getAttributes();
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values[selectedIndex] = value; |
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feat.setAttributes(values); |
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IRowEdited edRow = new DefaultRowEdited(feat,
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IRowEdited.STATUS_MODIFIED, i); |
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try {
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ies.modifyRow(edRow.getIndex(), edRow.getLinkedRow(), "",
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EditionEvent.ALPHANUMERIC); |
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} catch (ExpansionFileWriteException e) {
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NotificationManager.addError(e); |
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} catch (ExpansionFileReadException e) {
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NotificationManager.addError(e); |
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} catch (ValidateRowException e) {
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NotificationManager.addError(e); |
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} catch (ReadDriverException e) {
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NotificationManager.addError(e); |
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} |
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} |
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public void isCorrectValue(Object obj) throws BSFException { |
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if (obj instanceof Number || obj instanceof Date || obj instanceof Boolean || obj instanceof String) { |
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}else{
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throw new BSFException("incorrect"); |
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} |
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} |
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private Value getValue(Object obj) { |
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int typeField = fieldDescriptor.getFieldType();
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Value value = null;//ValueFactory.createNullValue(); |
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if (obj instanceof Number) { |
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if (typeField == Types.DOUBLE || typeField == Types.NUMERIC) { |
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double dv = ((Number) obj).doubleValue(); |
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value = ValueFactory.createValue(dv); |
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} else if (typeField == Types.FLOAT) { |
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float df = ((Number) obj).floatValue(); |
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value = ValueFactory.createValue(df); |
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} else if (typeField == Types.INTEGER) { |
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int di = ((Number) obj).intValue(); |
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value = ValueFactory.createValue(di); |
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} else if (typeField == Types.BIGINT) { |
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long di = ((Number) obj).longValue(); |
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value = ValueFactory.createValue(di); |
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} else if (typeField == Types.VARCHAR) { |
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String s = ((Number) obj).toString(); |
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value = ValueFactory.createValue(s); |
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} else if (typeField == Types.BOOLEAN) { |
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if (((Number) obj).intValue()==0){ |
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value=ValueFactory.createValue(false);
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}else{
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value=ValueFactory.createValue(true);
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} |
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} |
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} else if (obj instanceof Date) { |
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if (typeField == Types.DATE) { |
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Date date = (Date) obj; |
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value = ValueFactory.createValue(date); |
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} else if (typeField == Types.VARCHAR) { |
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String s = ((Date) obj).toString(); |
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value = ValueFactory.createValue(s); |
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} |
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} else if (obj instanceof Boolean) { |
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if (typeField == Types.BOOLEAN) { |
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boolean b = ((Boolean) obj).booleanValue(); |
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value = ValueFactory.createValue(b); |
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} else if (typeField == Types.VARCHAR) { |
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String s = ((Boolean) obj).toString(); |
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value = ValueFactory.createValue(s); |
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} |
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} else if (obj instanceof String) { |
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if (typeField == Types.VARCHAR) { |
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String s = obj.toString();
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value = ValueFactory.createValue(s); |
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} |
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}else{
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value=ValueFactory.createNullValue(); |
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} |
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return value;
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} |
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public FieldDescription getFieldDescriptorSelected() {
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return fieldDescriptor;
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} |
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public FieldDescription[] getFieldDescriptors() { |
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return fieldDescriptors;
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} |
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public void saveEdits(int numRows) throws ReadDriverException, InitializeWriterException, StopWriterVisitorException { |
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if (limit==-1 || numRows == 0 || (numRows % limit)!=0) { |
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return;
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} |
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ies.endComplexRow(PluginServices.getText(this, "expression")); |
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if ((layer != null) |
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&& layer.getSource() instanceof VectorialEditableAdapter) {
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VectorialEditableAdapter vea = (VectorialEditableAdapter) layer |
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.getSource(); |
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ISpatialWriter spatialWriter = (ISpatialWriter) vea.getDriver(); |
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vea.cleanSelectableDatasource(); |
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// We want that the recordset of the layer shows the changes of the fields
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layer.setRecordset(vea.getRecordset()); |
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ILayerDefinition lyrDef = EditionUtilities |
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.createLayerDefinition(layer); |
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spatialWriter.initialize(lyrDef); |
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vea.saveEdits(spatialWriter,EditionEvent.ALPHANUMERIC); |
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vea.getCommandRecord().clearAll(); |
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} else {
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if (ies instanceof IWriteable){ |
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IWriteable w = (IWriteable) ies; |
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IWriter writer = w.getWriter(); |
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if (writer == null){ |
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}else{
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ITableDefinition tableDef = ies.getTableDefinition(); |
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writer.initialize(tableDef); |
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ies.saveEdits(writer,EditionEvent.ALPHANUMERIC); |
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ies.getSelection().clear(); |
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} |
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} |
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ies.getCommandRecord().clearAll(); |
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} |
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ies.startComplexRow(); |
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} |
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/**
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* Evaluate the expression.
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* @throws ReadDriverException
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* @throws BSFException
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*/
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public boolean evalExpression(String expression) throws ReadDriverException, BSFException{ |
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long rowCount = sds.getRowCount();
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byte[] expressionBytes; |
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String encoding = System.getProperty("file.encoding"); |
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try {
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expressionBytes = expression.getBytes(encoding); |
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expression = new String(expressionBytes, "ISO-8859-1"); |
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} catch (UnsupportedEncodingException e) { |
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e.printStackTrace(); |
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} |
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expression=expression.replaceAll("\\[","field(\"").replaceAll("\\]","\")"); |
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interpreter.declareBean("ee",this,EvalExpression.class); |
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interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"def expression():\n" + |
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" return " +expression+ ""); |
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if (rowCount > 0) { |
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try {
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interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"def isCorrect():\n" + |
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" ee.isCorrectValue(expression())\n");
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interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"isCorrect()"); |
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} catch (BSFException ee) {
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String message=ee.getMessage();
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if (message.length()>200){ |
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message=message.substring(0,200); |
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} |
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int option=JOptionPane.showConfirmDialog((Component) PluginServices.getMainFrame(), |
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PluginServices.getText(this,
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"error_expression")+"\n"+message+"\n"+PluginServices.getText(this,"continue?")); |
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if (option!=JOptionPane.OK_OPTION) { |
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return false; |
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} |
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} |
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} |
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ies.startComplexRow(); |
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ArrayList exceptions=new ArrayList(); |
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interpreter.declareBean("exceptions",exceptions,ArrayList.class); |
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FBitSet selection=sds.getSelection(); |
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if (selection.cardinality() > 0) { |
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interpreter.declareBean("selection", selection, FBitSet.class);
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interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"def p():\n" + |
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" i=selection.nextSetBit(0)\n" +
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" while i >=0:\n" +
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" indexRow.set(i)\n" +
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" obj=expression()\n" +
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" ee.setValue(obj,i)\n" +
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" ee.saveEdits(i)\n" +
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" i=selection.nextSetBit(i+1)\n");
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} else {
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interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"def p():\n" + |
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" for i in xrange("+rowCount +"):\n" + |
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" indexRow.set(i)\n" +
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// " print i , expression() , repr (expression())\n" +
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" ee.setValue(expression(),i)\n" +
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" ee.saveEdits(i)\n");
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} |
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try {
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interpreter.eval(ExpressionFieldExtension.JYTHON,null,-1,-1,"p()"); |
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} catch (BSFException ee) {
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JOptionPane.showMessageDialog((Component) PluginServices.getMainFrame(), |
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PluginServices.getText(this, "evaluate_expression_with_errors")+" "+(rowCount-indexRow.get())+"\n"+ee.getMessage()); |
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} |
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ies.endComplexRow(PluginServices.getText(this, "expression")); |
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return true; |
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} |
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public Table getTable() {
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return this.table; |
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} |
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public ArrayList<IOperator> getOperators() { |
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return this.operators; |
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} |
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public FLyrVect getLayer() {
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return this.layer; |
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} |
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public BSFManager getInterpreter() {
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return this.interpreter; |
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} |
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} |