Revision 43981 trunk/org.gvsig.desktop/org.gvsig.desktop.plugin/org.gvsig.app.document.table.app/org.gvsig.app.document.table.app.mainplugin/src/main/java/org/gvsig/app/project/documents/table/gui/EmulatedFieldExpression.java
| EmulatedFieldExpression.java | ||
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*/ |
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package org.gvsig.app.project.documents.table.gui; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import org.apache.commons.collections.ListUtils; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.Code; |
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import org.gvsig.expressionevaluator.Code.Identifier; |
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import org.gvsig.fmap.dal.feature.EditableFeature; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeEmulator; |
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import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
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import org.gvsig.expressionevaluator.MutableSymbolTable; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynStruct; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.persistence.PersistenceManager; |
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import org.gvsig.tools.persistence.Persistent; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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import org.gvsig.tools.visitor.VisitCanceledException; |
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import org.gvsig.tools.visitor.Visitor; |
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/** |
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* |
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* @author osc |
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*/ |
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public class EmulatedFieldExpression implements FeatureAttributeEmulator, Persistent {
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String[] fields = null;
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String[] requiredFields = null;
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String code = ""; |
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private static final String EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME = |
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"EmulatedFieldExpression"; |
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Code codeCompiled = null; |
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MutableSymbolTable symbolTable = null; |
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ExpressionEvaluatorManager expressionManager = null; |
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private static final String EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME |
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= "EmulatedFieldExpression"; |
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private boolean valid; |
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private String errorMessage; |
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public EmulatedFieldExpression() {
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} |
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EmulatedFieldExpression(String[] fields, String code){
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this.fields = fields; |
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EmulatedFieldExpression(FeatureType featureType, String code) {
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this.setCode(code); |
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this.checkVars(featureType); |
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} |
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public boolean isValid() {
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return this.valid; |
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} |
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private void checkVars(final FeatureType featureType) {
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this.valid = true; |
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final List<String> theUsedFields = new ArrayList<>(); |
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final List<String> undefinedFields = new ArrayList<>(); |
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try {
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Code theCodeCompiled = this.getCodeCompiled(); |
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theCodeCompiled.accept(new Visitor() {
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@Override |
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public void visit(Object obj) throws VisitCanceledException, BaseException {
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Code code = (Code) obj; |
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if (code instanceof Identifier) {
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String name = ((Identifier) code).name(); |
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if (featureType.get(name) == null) {
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undefinedFields.add(name); |
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valid = false; |
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} else {
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theUsedFields.add(name); |
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} |
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} |
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} |
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}); |
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if(!undefinedFields.isEmpty()){
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this.errorMessage = "undefined fields " + StringUtils.join(undefinedFields,", "); |
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} |
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} catch (BaseException ex) {
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valid = false; |
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this.errorMessage = ex.getMessage(); |
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} |
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this.requiredFields = theUsedFields.toArray(new String[theUsedFields.size()]); |
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} |
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public static void registerPersistenceDefinition() {
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PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
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if (manager.getDefinition(EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME) ==
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null) {
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if (manager.getDefinition(EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME) |
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== null) {
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DynStruct definition = manager.addDefinition( |
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EmulatedFieldExpression.class, |
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EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME,
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EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME +
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" Persistent definition",
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null,
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null |
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EmulatedFieldExpression.class,
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EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME,
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EMULEFIELDEXP_PERSISTENCE_DEFINITION_NAME
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+ " Persistent definition",
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null,
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null
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); |
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definition.addDynFieldString("code")
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.setMandatory(true) |
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.setPersistent(true); |
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.setMandatory(true)
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.setPersistent(true);
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definition.addDynFieldArray("fields")
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.setClassOfItems(String.class) |
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.setMandatory(true) |
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.setPersistent(true); |
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.setClassOfItems(String.class) |
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.setMandatory(true) |
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.setPersistent(true); |
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definition.addDynFieldBoolean("valid")
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.setMandatory(true) |
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.setPersistent(true); |
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} |
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} |
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private Code getCodeCompiled() {
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if (this.codeCompiled == null) {
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this.codeCompiled = this.getExpressionManager().compile(code); |
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} |
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return this.codeCompiled; |
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} |
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private MutableSymbolTable getSymbolTable() {
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if (this.symbolTable == null) {
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this.symbolTable = this.getExpressionManager().createSymbolTable(); |
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} |
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return this.symbolTable; |
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} |
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private ExpressionEvaluatorManager getExpressionManager() {
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if (this.expressionManager == null) {
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this.expressionManager |
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= ExpressionEvaluatorLocator.getManager(); |
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} |
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return this.expressionManager; |
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} |
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@Override |
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public Object get(Feature feature) {
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ExpressionEvaluatorManager expManager = |
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ExpressionEvaluatorLocator.getManager(); |
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MutableSymbolTable symbol = expManager.createSymbolTable(); |
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FeatureAttributeDescriptor[] descriptors = |
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feature.getType().getAttributeDescriptors(); |
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for (FeatureAttributeDescriptor descriptor : descriptors) {
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String fieldName = descriptor.getName(); |
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if (!this.valid) {
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return null; |
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} |
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MutableSymbolTable symbol = this.getSymbolTable(); |
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for (FeatureAttributeDescriptor descriptor : feature.getType()) {
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if (!descriptor.isComputed()) { // si eres tu mismo
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String fieldName = descriptor.getName(); |
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Object value = feature.get(fieldName); |
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symbol.setVar(fieldName, value); |
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} |
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} |
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Code codeCompilation = expManager.compile(code);
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Object result = expManager.evaluate(symbol, codeCompilation);
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Code codeCompilation = this.getCodeCompiled();
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Object result = this.getExpressionManager().evaluate(symbol, codeCompilation);
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return result; |
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} |
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|
| ... | ... | |
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@Override |
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public String[] getRequiredFieldNames() {
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return this.fields;
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return this.requiredFields;
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} |
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public String getCode() {
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return this.code; |
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} |
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@Override |
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public void saveToState(PersistentState state) throws PersistenceException {
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state.set("fields", this.getFields());
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state.set("fields", this.getRequiredFieldNames());
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state.set("code", this.getCode());
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state.set("valid", this.isValid());
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} |
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@Override |
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public void loadFromState(PersistentState state) throws PersistenceException {
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String stateCode = state.getString("code");
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String[] stateFields = state.getStringArray("fields");
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this.valid = state.getBoolean("valid");
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this.setCode(stateCode); |
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this.setFields(stateFields); |
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} |
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public String[] getFields() {
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return this.fields; |
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} |
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private void setCode(String code) {
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this.code = code; |
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} |
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private void setFields(String[] fields) {
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this.fields = fields;
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this.requiredFields = fields;
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} |
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} |
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public String getErrorMessage() {
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return this.errorMessage; |
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} |
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} |
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