Revision: 15277
http://gate.svn.sourceforge.net/gate/?rev=15277&view=rev
Author: valyt
Date: 2012-01-31 11:20:36 +0000 (Tue, 31 Jan 2012)
Log Message:
-----------
Added support for the parameters that allow the definition of custom constrains
and annotation accessors.
Modified Paths:
--------------
gate/trunk/plugins/JAPE_Plus/src/gate/jape/plus/Transducer.java
Modified: gate/trunk/plugins/JAPE_Plus/src/gate/jape/plus/Transducer.java
===================================================================
--- gate/trunk/plugins/JAPE_Plus/src/gate/jape/plus/Transducer.java
2012-01-31 11:08:09 UTC (rev 15276)
+++ gate/trunk/plugins/JAPE_Plus/src/gate/jape/plus/Transducer.java
2012-01-31 11:20:36 UTC (rev 15277)
@@ -28,6 +28,8 @@
import gate.event.StatusListener;
import gate.gui.MainFrame;
import gate.jape.MultiPhaseTransducer;
+import gate.jape.constraint.AnnotationAccessor;
+import gate.jape.constraint.ConstraintPredicate;
import gate.jape.parser.ParseException;
import gate.util.GateException;
import gate.util.persistence.PersistenceManager;
@@ -109,13 +111,26 @@
public void setGrammarURL(URL source) {
this.grammarURL = source;
}
-
-
+
/**
* The source from which this transducer is created.
*/
protected URL grammarURL;
+ /**
+ * List of class names for any custom
+ * {@link gate.jape.constraint.ConstraintPredicate}.
+ */
+ protected List<String> operators = null;
+
+ /**
+ * List of class names for any custom
+ * {@link gate.jape.constraint.AnnotationAccessor}s.
+ */
+ protected List<String> annotationAccessors = null;
+
+
+
protected String encoding;
protected String inputASName;
@@ -157,6 +172,46 @@
*/
protected int currentSptIndex = -1;
+ /**
+ * Gets the list of class names for any custom boolean operators.
+ * Classes must implement {@link gate.jape.constraint.ConstraintPredicate}.
+ */
+ public List<String> getOperators() {
+ return operators;
+ }
+
+ /**
+ * Sets the list of class names for any custom boolean operators.
+ * Classes must implement {@link gate.jape.constraint.ConstraintPredicate}.
+ */
+ @Optional
+ @CreoleParameter(
+ comment = "Class names that implement
gate.jape.constraint.ConstraintPredicate."
+ )
+ public void setOperators(List<String> operators) {
+ this.operators = operators;
+ }
+
+ /**
+ * Gets the list of class names for any custom
+ * {@link gate.jape.constraint.AnnotationAccessor}s.
+ */
+ public List<String> getAnnotationAccessors() {
+ return annotationAccessors;
+ }
+
+ /**
+ * Sets the list of class names for any custom
+ * {@link gate.jape.constraint.AnnotationAccessor}s.
+ */
+ @Optional
+ @CreoleParameter(
+ comment = "Class names that implement
gate.jape.constraint.AnnotationAccessor."
+ )
+ public void setAnnotationAccessors(List<String> annotationAccessors) {
+ this.annotationAccessors = annotationAccessors;
+ }
+
public String getEncoding() {
return encoding;
}
@@ -183,6 +238,8 @@
@Override
public Resource init() throws ResourceInstantiationException {
super.init();
+ initCustomConstraints();
+
try {
parseJape();
} catch(IOException e) {
@@ -193,35 +250,114 @@
actionContext = new DefaultActionContext();
return this;
}
+
+
+ /**
+ * Loads any custom operators and annotation accessors into the
ConstraintFactory.
+ * @throws ResourceInstantiationException
+ */
+ protected void initCustomConstraints() throws ResourceInstantiationException
{
+ //Load operators
+ if (operators != null) {
+ for(String opName : operators) {
+ Class<? extends ConstraintPredicate> clazz = null;
+ try {
+ clazz = Class.forName(opName, true, Gate.getClassLoader())
+ .asSubclass(ConstraintPredicate.class);
+ }
+ catch(ClassNotFoundException e) {
+ //if couldn't find it that way, try with current thread class loader
+ try {
+ clazz = Class.forName(opName, true,
+ Thread.currentThread().getContextClassLoader())
+ .asSubclass(ConstraintPredicate.class);
+ }
+ catch(ClassNotFoundException e1) {
+ throw new ResourceInstantiationException("Cannot load class for
operator: " + opName, e1);
+ }
+ }
+ catch(ClassCastException cce) {
+ throw new ResourceInstantiationException("Operator class '" + opName
+ "' must implement ConstraintPredicate");
+ }
- protected void parseJape() throws IOException, ParseException,
ResourceInstantiationException{
- Class oldClass = Factory.getJapeParserClass();
- Factory.setJapeParserClass(ParseCpslPDA.class);
- try{
- ParseCpslPDA parser = (ParseCpslPDA)
Factory.newJapeParser(grammarURL, encoding);
+ //instantiate an instance of the class so can get the operator string
+ try {
+ ConstraintPredicate predicate = clazz.newInstance();
+ String opSymbol = predicate.getOperator();
+ //now store it in ConstraintFactory
+ Factory.getConstraintFactory().addOperator(opSymbol, clazz);
+ }
+ catch(Exception e) {
+ throw new ResourceInstantiationException("Cannot instantiate class
for operator: " + opName, e);
+ }
+ }
+ }
- StatusListener listener = new StatusListener(){
- public void statusChanged(String text){
- fireStatusChanged(text);
- }
- };
- parser.addStatusListener(listener);
- MultiPhaseTransducer intermediate = parser.MultiPhaseTransducer();
- parser.removeStatusListener(listener);
-
- singlePhaseTransducers = new
SPTBase[intermediate.getPhases().size()];
- SPTBuilder builder = new SPTBuilder();
- for(int i = 0; i < intermediate.getPhases().size(); i++){
- singlePhaseTransducers[i] =
builder.buildSPT((SinglePhaseTransducerPDA)
- intermediate.getPhases().get(i));
- singlePhaseTransducers[i].addProgressListener(this);
- }
- }
- finally{
- Factory.setJapeParserClass(oldClass);
- }
+ //Load annotationAccessors
+ if (annotationAccessors != null) {
+ for(String accessorName : annotationAccessors) {
+ Class<? extends AnnotationAccessor> clazz = null;
+ try {
+ clazz = Class.forName(accessorName, true, Gate.getClassLoader())
+ .asSubclass(AnnotationAccessor.class);
+ }
+ catch(ClassNotFoundException e) {
+ //if couldn't find it that way, try with current thread class loader
+ try {
+ clazz = Class.forName(accessorName, true,
+ Thread.currentThread().getContextClassLoader())
+ .asSubclass(AnnotationAccessor.class);
+ }
+ catch(ClassNotFoundException e1) {
+ throw new ResourceInstantiationException("Cannot load class for
accessor: " + accessorName, e1);
+ }
+ }
+ catch(ClassCastException cce) {
+ throw new ResourceInstantiationException("Operator class '" +
accessorName + "' must implement AnnotationAccessor");
+ }
+
+ //instantiate an instance of the class so can get the meta-property
name string
+ try {
+ AnnotationAccessor aa = clazz.newInstance();
+ String accSymbol = (String)aa.getKey();
+ //now store it in ConstraintFactory
+ Factory.getConstraintFactory().addMetaProperty(accSymbol, clazz);
+ }
+ catch(Exception e) {
+ throw new ResourceInstantiationException("Cannot instantiate class
for accessor: " + accessorName, e);
+ }
+
+ }
+ }
}
+
+ protected void parseJape() throws IOException, ParseException,
ResourceInstantiationException{
+ Class oldClass = Factory.getJapeParserClass();
+ Factory.setJapeParserClass(ParseCpslPDA.class);
+ try{
+ ParseCpslPDA parser = (ParseCpslPDA)
Factory.newJapeParser(grammarURL, encoding);
+ StatusListener listener = new StatusListener(){
+ public void statusChanged(String text){
+ fireStatusChanged(text);
+ }
+ };
+ parser.addStatusListener(listener);
+ MultiPhaseTransducer intermediate = parser.MultiPhaseTransducer();
+ parser.removeStatusListener(listener);
+
+ singlePhaseTransducers = new
SPTBase[intermediate.getPhases().size()];
+ SPTBuilder builder = new SPTBuilder();
+ for(int i = 0; i < intermediate.getPhases().size(); i++){
+ singlePhaseTransducers[i] =
builder.buildSPT((SinglePhaseTransducerPDA)
+ intermediate.getPhases().get(i));
+ singlePhaseTransducers[i].addProgressListener(this);
+ }
+ } finally{
+ Factory.setJapeParserClass(oldClass);
+ }
+ }
+
@Override
public void cleanup() {
super.cleanup();
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