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ANNIE is a general purpose information extraction system that
provides the building blocks of many other GATE applications.
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/*
* RightHandSide.java - transducer class
*
* Copyright (c) 1995-2012, The University of Sheffield. See the file
* COPYRIGHT.txt in the software or at http://gate.ac.uk/gate/COPYRIGHT.txt
*
* This file is part of GATE (see http://gate.ac.uk/), and is free
* software, licenced under the GNU Library General Public License,
* Version 2, June 1991 (in the distribution as file licence.html,
* and also available at http://gate.ac.uk/gate/licence.html).
*
* Hamish Cunningham, 24/07/98
*
* $Id: RightHandSide.java 17895 2014-04-24 06:21:59Z markagreenwood $
*/
package gate.jape;
import gate.AnnotationSet;
import gate.Document;
import gate.Factory;
import gate.FeatureMap;
import gate.Gate;
import gate.creole.ontology.Ontology;
import gate.util.Err;
import gate.util.GateClassLoader;
import gate.util.GateRuntimeException;
import gate.util.Strings;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
/**
* The RHS of a CPSL rule. The action part. Contains an inner class
* created from the code in the grammar RHS.
*/
public class RightHandSide implements JapeConstants, java.io.Serializable
{
private static final long serialVersionUID = -4359589687308736378L;
/** An instance of theActionClass. */
transient private Object theActionObject;
/** The string we use to create the action class. */
private StringBuffer actionClassString;
/** The name of the action class. */
private String actionClassName;
/** Package name for action classes. It's called a "dir name" because
* we used to dump the action classes to disk and compile them there.
*/
static private String actionsDirName = "japeactionclasses";
/** The qualified name of the action class. */
private String actionClassQualifiedName;
/** Name of the .java file for the action class. */
private String actionClassJavaFileName;
/** Name of the .class file for the action class. */
private String actionClassClassFileName;
/** A list of source info object for mapping between Java and Jape. */
//private transient List sourceInfo;
private transient SourceInfo sourceInfo;
private transient GateClassLoader classloader;
/** Cardinality of the action class set. Used for ensuring class name
* uniqueness.
*/
private static AtomicInteger actionClassNumber = new AtomicInteger();
/** The set of block names.
* Used to ensure we only get their annotations once in the action class.
*/
private Set blockNames;
/** Returns the string for the java code */
public String getActionClassString() { return actionClassString.toString(); }
public String getActionClassName() { return actionClassQualifiedName; }
/** The LHS of our rule, where we get bindings from. */
private LeftHandSide lhs;
/** A list of the files and directories we create. */
static private List tempFiles = new ArrayList();
/** Local fashion for newlines. */
private final String nl = Strings.getNl();
/** Debug flag. */
static final boolean debug = false;
private String phaseName;
private String ruleName;
/** Construction from the transducer name, rule name and the LHS. */
public RightHandSide(
String transducerName,
String ruleName,
LeftHandSide lhs,
String importblock
) {
// debug = true;
this.lhs = lhs;
this.phaseName = transducerName;
this.ruleName = ruleName;
actionClassName = transducerName + ruleName + "ActionClass" + actionClassNumber.getAndIncrement();
blockNames = new HashSet();
actionClassString = new StringBuffer(
"// " + actionClassName + nl +
"package " + actionsDirName + "; " + nl +
importblock + nl +
"public class " + actionClassName + nl +
"implements java.io.Serializable, gate.jape.RhsAction { " + nl +
" private gate.jape.ActionContext ctx;"+nl+
" public java.lang.String ruleName() { return \""+ruleName+"\"; }"+nl+
" public java.lang.String phaseName() { return \""+phaseName+"\"; }"+nl+
" public void setActionContext(gate.jape.ActionContext ac) { ctx = ac; }"+nl+
" public gate.jape.ActionContext getActionContext() { return ctx; }"+nl+
" public void doit(gate.Document doc, " + nl +
" java.util.Map bindings, " + nl +
//" gate.AnnotationSet annotations, " + nl +
" gate.AnnotationSet inputAS, gate.AnnotationSet outputAS, " + nl +
" gate.creole.ontology.Ontology ontology) throws gate.jape.JapeException {" + nl
);
// initialise various names
actionClassJavaFileName =
actionsDirName + File.separator +
actionClassName.replace('.', File.separatorChar) + ".java";
actionClassQualifiedName =
actionsDirName.
replace(File.separatorChar, '.').replace('/', '.').replace('\\', '.') +
"." + actionClassName;
actionClassClassFileName =
actionClassQualifiedName.replace('.', File.separatorChar) + ".class";
sourceInfo = new SourceInfo(actionClassQualifiedName, phaseName, ruleName);
} // Construction from lhs
/** Construction from an existing RHS */
public RightHandSide(RightHandSide existingRhs) {
this.lhs = existingRhs.lhs;
this.phaseName = existingRhs.phaseName;
this.ruleName = existingRhs.ruleName;
this.actionClassName = existingRhs.actionClassName;
this.blockNames = existingRhs.blockNames;
this.actionClassString = existingRhs.actionClassString;
this.actionClassJavaFileName = existingRhs.actionClassJavaFileName;
this.actionClassQualifiedName = existingRhs.actionClassQualifiedName;
this.actionClassClassFileName = existingRhs.actionClassClassFileName;
this.sourceInfo = existingRhs.sourceInfo;
// this is the important bit - the cloned RHS needs to create its own
// instance of the action class the first time its transduce() is called.
this.theActionObject = null;
} // Construction from existing RHS
/** Add an anonymous block to the action class */
public void addBlock(String anonymousBlock) {
actionClassString.append(nl);
actionClassString.append("if (true) {");
actionClassString.append(nl);
actionClassString.append(sourceInfo.addBlock(actionClassString.toString(), anonymousBlock));
actionClassString.append(nl);
actionClassString.append("}");
actionClassString.append(nl);
} // addBlock(anon)
/** Add a named block to the action class */
public void addBlock(String name, String namedBlock) {
// is it really a named block?
// (dealing with null name cuts code in the parser...)
if(name == null) {
addBlock(namedBlock);
return;
}
if(blockNames.add(name)) // it wasn't already a member
actionClassString.append(
" gate.AnnotationSet " + name + "Annots = bindings.get(\""
+ name + "\"); " + nl
);
actionClassString.append(
" if(" + name + "Annots != null && " + name +
"Annots.size() != 0) { " + nl);
actionClassString.append(sourceInfo.addBlock(actionClassString.toString(), namedBlock));
actionClassString.append(
nl + " }" + nl
);
} // addBlock(name, block)
public void finish(GateClassLoader classloader) {
this.classloader = classloader;
}
/** Create the action class and an instance of it. */
public void createActionClass() throws JapeException {
// terminate the class string
actionClassString.append(" }" + nl + "}" + nl);
// try {
// Javac.loadClass(actionClassString.toString(),
// actionClassJavaFileName);
// } catch(GateException e) {
// String nl = Strings.getNl();
// String actionWithNumbers =
// Strings.addLineNumbers(actionClassString.toString());
// throw new JapeException(
// "Couldn't create action class: " + nl + e + nl +
// "offending code was: " + nl + actionWithNumbers + nl
// );
// }
// instantiateActionClass();
} // createActionClass
/** Create an instance of the action class. */
public void instantiateActionClass() throws JapeException {
try {
theActionObject = classloader.
loadClass(actionClassQualifiedName).
newInstance();
} catch(Exception e) {
throw new JapeException(
"couldn't create instance of action class " + actionClassName + ": "
+ e.getMessage()
);
}
} // instantiateActionClass
/** Remove class files created for actions. */
public static void cleanUp() {
if(tempFiles.size() == 0) return;
// traverse the list in reverse order, coz any directories we
// created were done first
for(ListIterator i = tempFiles.listIterator(tempFiles.size()-1);
i.hasPrevious();
) {
File tempFile = i.previous();
tempFile.delete();
} // for each tempFile
tempFiles.clear();
} // cleanUp
private void writeObject(java.io.ObjectOutputStream out)
throws IOException{
out.defaultWriteObject();
//now we need to save the class for the action
try{
Class class1 = classloader.loadClass(actionClassQualifiedName);
//System.out.println(class1.getName());
out.writeObject(class1);
}catch(ClassNotFoundException cnfe){
throw new GateRuntimeException(cnfe);
}
}
private void readObject(java.io.ObjectInputStream in)
throws IOException, ClassNotFoundException{
in.defaultReadObject();
//now read the class
String className = getActionClassName();
if (classloader == null)
classloader = Gate.getClassLoader().getDisposableClassLoader(in.toString(),true);
try{
Map actionClasses = new HashMap();
actionClasses.put(className, getActionClassString());
gate.util.Javac.loadClasses(actionClasses, classloader);
}catch(Exception e1){
throw new GateRuntimeException (e1);
}
}
/** Makes changes to the document, using LHS bindings. */
public void transduce(Document doc, java.util.Map bindings,
AnnotationSet inputAS, final AnnotationSet outputAS,
Ontology ontology,
final ActionContext actionContext)
throws JapeException {
if(theActionObject == null) {
instantiateActionClass();
}
// run the action class
try {
((RhsAction) theActionObject).setActionContext(actionContext);
if (actionContext.isDebuggingEnabled()) {
AnnotationSet outputASproxy =
(AnnotationSet)Proxy.newProxyInstance(classloader, new Class[] {AnnotationSet.class},
new InvocationHandler() {
public Object invoke(Object proxy, Method method,
Object[] args) throws Throwable {
if (method.getName().equals("add")) {
int index = args.length - 1;
Class lastArgType = method.getParameterTypes()[index];
if (lastArgType.equals(FeatureMap.class)) {
FeatureMap features = (FeatureMap)args[index];
if (features == null) {
features = Factory.newFeatureMap();
args[index] = features;
}
features.put("addedByPR", actionContext.getPRName());
features.put("addedByPhase", getPhaseName());
features.put("addedByRule",getRuleName());
}
}
return method.invoke(outputAS, args);
}
});
((RhsAction)theActionObject).doit(doc, bindings, inputAS, outputASproxy,
ontology);
} else {
((RhsAction)theActionObject).doit(doc, bindings, inputAS, outputAS, ontology);
}
} catch (NonFatalJapeException e) {
// if the action class throws a non-fatal exception then respond by
// dumping a whole bunch of useful debug information but then allow
// processing to continue on as if nothing happened.
Throwable t = e.getCause();
Err.println("A non-fatal JAPE exception occurred while processing document '"+doc.getName()+"'.");
Err.println("The issue occurred during execution of rule '"+getRuleName()+"' in phase '"+getPhaseName()+"':");
if (t != null) {
sourceInfo.enhanceTheThrowable(t);
t.printStackTrace(Err.getPrintWriter());
} else {
Err.println("Line number and exception details are not available!");
}
} catch (Throwable e) {
// if the action class throws an exception, re-throw it with a
// full description of the problem, inc. stack trace and the RHS
// action class code
if (sourceInfo != null) sourceInfo.enhanceTheThrowable(e);
if(e instanceof Error) {
throw (Error)e;
}
if(e instanceof JapeException) {
throw (JapeException)e;
}
if(e instanceof RuntimeException) {
throw (RuntimeException)e;
}
// shouldn't happen...
throw new JapeException(
"Couldn't run RHS action", e);
}
} // transduce
/** Create a string representation of the object. */
@Override
public String toString() { return toString(""); }
/** Create a string representation of the object. */
public String toString(String pad) {
String nl = Strings.getNl();
StringBuffer buf = new StringBuffer(
pad + "RHS: actionClassName(" + actionClassName + "); "
);
//buf.append("actionClassString(" + nl + actionClassString + nl);
buf.append(
"actionClassClassFileName(" + nl + actionClassClassFileName + nl
);
buf.append("actionClassJavaFileName(" + nl + actionClassJavaFileName + nl);
buf.append(
"actionClassQualifiedName(" + nl + actionClassQualifiedName + nl
);
buf.append("blockNames(" + blockNames.toString() + "); ");
buf.append(nl + pad + ") RHS." + nl);
return buf.toString();
} // toString
/** Create a string representation of the object. */
public String shortDesc() {
String res = "" + actionClassName;
return res;
}
public void setPhaseName(String phaseName) {
this.phaseName = phaseName;
}
public String getPhaseName() {
return phaseName;
}
public void setRuleName(String ruleName) {
this.ruleName = ruleName;
}
public String getRuleName() {
return ruleName;
} // toString
} // class RightHandSide
// $Log$
// Revision 1.31 2005/10/10 14:59:15 nirajaswani
// bug fixed - reenabled JAPE serialization
//
// Revision 1.30 2005/10/10 10:29:38 valyt
// Serialisatoin to savwe the RHS action class object as well.
//
// Revision 1.29 2005/09/30 16:01:04 valyt
// BUGFIX:
// RHS Java blocks now have braces around them (to reduce visibility of local variables)
//
// Revision 1.28 2005/01/11 13:51:36 ian
// Updating copyrights to 1998-2005 in preparation for v3.0
//
// Revision 1.27 2004/07/21 17:10:08 akshay
// Changed copyright from 1998-2001 to 1998-2004
//
// Revision 1.26 2004/03/25 13:01:14 valyt
// Imports optimisation throughout the Java sources
// (to get rid of annoying warnings in Eclipse)
//
// Revision 1.25 2002/05/14 09:43:17 valyt
//
// Ontology Aware JAPE transducers
//
// Revision 1.24 2002/02/27 15:11:16 valyt
//
// bug 00011:
// Jape access to InputAS
//
// Revision 1.23 2002/02/26 13:27:12 valyt
//
// Error messages from the compiler
//
// Revision 1.22 2002/02/26 10:30:07 valyt
//
// new compile solution
//
// Revision 1.21 2002/02/12 11:39:03 valyt
//
// removed sate and status members for Jape generated classes
//
// Revision 1.20 2002/02/04 13:59:04 hamish
// added status and state members to RhsAction
//
// Revision 1.19 2001/11/16 13:03:35 hamish
// moved line numbers method to Strings
//
// Revision 1.18 2001/11/16 10:29:45 hamish
// JAPE RHS compiler errors now include the RHS code; test added
//
// Revision 1.17 2001/11/15 14:05:09 hamish
// better error messages from JAPE RHS problems
//
// Revision 1.16 2001/11/01 15:49:09 valyt
//
// DEBUG mode for Japes
//
// Revision 1.15 2001/09/13 12:09:50 kalina
// Removed completely the use of jgl.objectspace.Array and such.
// Instead all sources now use the new Collections, typically ArrayList.
// I ran the tests and I ran some documents and compared with keys.
// JAPE seems to work well (that's where it all was). If there are problems
// maybe look at those new structures first.
//
// Revision 1.14 2000/11/08 16:35:03 hamish
// formatting
//
// Revision 1.13 2000/10/26 10:45:30 oana
// Modified in the code style
//
// Revision 1.12 2000/10/16 16:44:34 oana
// Changed the comment of DEBUG variable
//
// Revision 1.11 2000/10/10 15:36:36 oana
// Changed System.out in Out and System.err in Err;
// Added the DEBUG variable seted on false;
// Added in the header the licence;
//
// Revision 1.10 2000/07/04 14:37:39 valyt
// Added some support for Jape-ing in a different annotations et than the default one;
// Changed the L&F for the JapeGUI to the System default
//
// Revision 1.9 2000/06/12 13:33:27 hamish
// removed japeactionclasse create code (static init block
//
// Revision 1.8 2000/05/16 10:38:25 hamish
// removed printout
//
// Revision 1.7 2000/05/16 10:30:33 hamish
// uses new gate.util.Jdk compiler
//
// Revision 1.6 2000/05/05 12:51:12 valyt
// Got rid of deprecation warnings
//
// Revision 1.5 2000/05/05 10:14:09 hamish
// added more to toString
//
// Revision 1.4 2000/05/02 16:54:47 hamish
// porting to new annotation API
//
// Revision 1.3 2000/04/20 13:26:42 valyt
// Added the graph_drawing library.
// Creating of the NFSM and DFSM now works.
//
// Revision 1.2 2000/02/24 17:28:48 hamish
// more porting to new API
//
// Revision 1.1 2000/02/23 13:46:11 hamish
// added
//
// Revision 1.1.1.1 1999/02/03 16:23:02 hamish
// added gate2
//
// Revision 1.21 1998/11/13 17:25:10 hamish
// stop it using sun.tools... when in 1.2
//
// Revision 1.20 1998/10/30 15:31:07 kalina
// Made small changes to make compile under 1.2 and 1.1.x
//
// Revision 1.19 1998/10/29 12:17:12 hamish
// use reflection when using sun compiler classes, so can compile without them
//
// Revision 1.18 1998/10/01 16:06:36 hamish
// new appelt transduction style, replacing buggy version
//
// Revision 1.17 1998/09/18 16:54:17 hamish
// save/restore works except for attribute seq
//
// Revision 1.16 1998/09/18 13:35:44 hamish
// refactored to split up createActionClass
//
// Revision 1.15 1998/09/18 12:15:40 hamish
// bugs fixed: anon block null ptr; no error for some non-existant labelled blocks
//
// Revision 1.14 1998/08/19 20:21:41 hamish
// new RHS assignment expression stuff added
//
// Revision 1.13 1998/08/17 10:43:29 hamish
// action classes have unique names so can be reloaded
//
// Revision 1.12 1998/08/12 15:39:42 hamish
// added padding toString methods
//
// Revision 1.11 1998/08/10 14:16:38 hamish
// fixed consumeblock bug and added batch.java
//
// Revision 1.10 1998/08/07 12:01:46 hamish
// parser works; adding link to backend
//
// Revision 1.9 1998/08/05 21:58:07 hamish
// backend works on simple test
//
// Revision 1.8 1998/08/04 12:42:56 hamish
// fixed annots null check bug
//
// Revision 1.7 1998/08/03 21:44:57 hamish
// moved parser classes to gate.jape.parser
//
// Revision 1.6 1998/08/03 19:51:26 hamish
// rollback added
//
// Revision 1.5 1998/07/31 16:50:18 hamish
// RHS compilation works; it runs - and falls over...
//
// Revision 1.4 1998/07/31 13:12:25 hamish
// done RHS stuff, not tested
//
// Revision 1.3 1998/07/30 11:05:24 hamish
// more jape
//
// Revision 1.2 1998/07/29 11:07:10 hamish
// first compiling version
//
// Revision 1.1.1.1 1998/07/28 16:37:46 hamish
// gate2 lives
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