/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.aop.pointcut;
import java.lang.reflect.Method;
import java.util.ArrayList;
import org.jboss.aop.Advisor;
import org.jboss.aop.pointcut.ast.ASTAll;
import org.jboss.aop.pointcut.ast.ASTAttribute;
import org.jboss.aop.pointcut.ast.ASTException;
import org.jboss.aop.pointcut.ast.ASTMethod;
import org.jboss.aop.pointcut.ast.ASTStart;
import org.jboss.aop.pointcut.ast.ClassExpression;
import javassist.CtMethod;
import javassist.NotFoundException;
/**
* Comment
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 70842 $
*/
public class MethodMatcher extends MatcherHelper
{
protected Advisor advisor;
protected CtMethod ctMethod;
protected Method refMethod;
protected int methodModifiers;
protected String classname;
protected String methodName;
protected Class<?> matchedClass;
protected int matchLevel;//0 if matches the exact class, 1 if the direct superclass etc.
protected boolean isInstanceof;
public MethodMatcher(Advisor advisor, CtMethod method, ASTStart start)
{
super(start, advisor.getManager());
this.advisor = advisor;
this.start = start;
this.methodModifiers = method.getModifiers();
this.classname = method.getDeclaringClass().getName();
this.ctMethod = method;
this.methodName = ctMethod.getName();
}
public MethodMatcher(Advisor advisor, Method method, ASTStart start)
{
super(start, advisor.getManager());
this.advisor = advisor;
this.start = start;
this.methodModifiers = method.getModifiers();
this.classname = method.getDeclaringClass().getName();
this.refMethod = method;
this.methodName = refMethod.getName();
}
public Class<?> getMatchedClass()
{
return matchedClass;
}
public int getMatchLevel()
{
return matchLevel;
}
public boolean isInstanceOf()
{
return isInstanceof;
}
protected Boolean resolvePointcut(Pointcut p)
{
throw new RuntimeException("SHOULD NOT BE CALLED");
}
public Object visit(ASTMethod node, Object data)
{
return matches(node);
}
public Boolean matches(ASTMethod node)
{
if (!matchesModifiers(node)) return Boolean.FALSE;
if (!matchesClass(node)) return Boolean.FALSE;
if (!matchesIdentifier(node))return Boolean.FALSE;
if (!matchesExceptions(node))return Boolean.FALSE;
if (!matchesReturnType(node)) return Boolean.FALSE;
if (!matchesParameters(node)) return Boolean.FALSE;
return Boolean.TRUE;
}
public Object visit(ASTAll node, Object data)
{
Boolean matches = Boolean.FALSE;
ClassExpression expr = node.getClazz();
if (ctMethod != null)
{
return classMatchesAll(expr);
}
else
{
Class<?> declaringClass = MatcherStrategy.getMatcher(advisor).getDeclaringClass(advisor, refMethod);
if (!advisor.chainOverridingForInheritedMethods())
{
matches = classMatchesAll(expr);
}
else
{
Class<?> advisedClass = advisor.getClazz();
matchedClass = advisedClass;
while (matchedClass != null)
{
if (classMatchesAll(node.getClazz()).booleanValue())
{
if (node.getClazz().isInstanceOf())
{
isInstanceof = true;
}
return Boolean.TRUE;
}
if (matchedClass == declaringClass)
{
break;
}
matchedClass = matchedClass.getSuperclass();
matchLevel++;
}
}
}
return matches;
}
public Boolean classMatchesAll(ClassExpression expr)
{
if (expr.isAnnotation())
{
String sub = expr.getOriginal().substring(1);
if (ctMethod != null)
{
if (!advisor.getMethodMetaData().hasGroup(ctMethod, sub))
{
if (!advisor.getDefaultMetaData().hasTag(sub))
{
if (!advisor.hasAnnotation(ctMethod, sub)) return Boolean.FALSE;
}
}
}
else
{
if (!advisor.getMethodMetaData().hasTag(refMethod, sub))
{
if (!advisor.getDefaultMetaData().hasTag(sub))
{
try
{
if (!advisor.hasAnnotation(refMethod, sub)) return Boolean.FALSE;
}
catch (Exception e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
}
}
}
}
else if (expr.isInstanceOf())
{
if (ctMethod != null)
{
if (!Util.subtypeOf(ctMethod.getDeclaringClass(), expr, advisor)) return Boolean.FALSE;
}
else if (!Util.subtypeOf(refMethod.getDeclaringClass(), expr, advisor)) return Boolean.FALSE;
}
else if (expr.isTypedef())
{
if (ctMethod != null)
{
try
{
if (!Util.matchesTypedef(ctMethod.getDeclaringClass(), expr, advisor)) return Boolean.FALSE;
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
else if (!Util.matchesTypedef(refMethod.getDeclaringClass(), expr, advisor)) return Boolean.FALSE;
}
else if (!expr.matches(classname))
{
return Boolean.FALSE;
}
return Boolean.TRUE;
}
protected boolean matchesModifiers(ASTMethod node)
{
if (node.getAttributes().size() > 0)
{
for (int i = 0; i < node.getAttributes().size(); i++)
{
ASTAttribute attr = (ASTAttribute) node.getAttributes().get(i);
if (!Util.matchModifiers(attr, methodModifiers)) return false;
}
}
return true;
}
protected boolean matchesClass(ASTMethod node)
{
if (ctMethod != null)
{
if (!Util.matchesClassExpr(node.getClazz(), ctMethod.getDeclaringClass(), advisor)) return false;
}
else
{
Class<?> declaringClass = MatcherStrategy.getMatcher(advisor).getDeclaringClass(advisor, refMethod);
if (!advisor.chainOverridingForInheritedMethods())
{
if (Util.matchesClassExpr(node.getClazz(), declaringClass, advisor))
{
matchedClass = declaringClass;
return true;
}
return false;
}
else
{
Class<?> advisedClass = advisor.getClazz();
if (advisor.getClazz() == null)
{
throw new RuntimeException("Advisor is null");
}
matchedClass = advisedClass;
while (matchedClass != null)
{
if (Util.matchesClassExpr(node.getClazz(), matchedClass, advisor))
{
if (node.getClazz().isInstanceOf())
{
isInstanceof = true;
}
return true;
}
if (matchedClass == declaringClass)
{
break;
}
matchedClass = matchedClass.getSuperclass();
matchLevel++;
}
return false;
}
}
return true;
}
protected boolean matchesIdentifier(ASTMethod node)
{
if (node.getMethodIdentifier().isAnnotation())
{
if (advisor == null) return false;
String sub = node.getMethodIdentifier().getOriginal().substring(1);
if (ctMethod != null)
{
if (!advisor.getMethodMetaData().hasGroup(ctMethod, sub))
{
if (!advisor.getDefaultMetaData().hasTag(sub))
{
if (!advisor.hasAnnotation(ctMethod, sub)) return false;
}
}
}
else
{
if (!advisor.getMethodMetaData().hasTag(refMethod, sub))
{
if (!advisor.getDefaultMetaData().hasTag(sub))
{
try
{
if (!advisor.hasAnnotation(refMethod, sub)) return false;
}
catch (Exception e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
}
}
}
}
else if (node.getMethodIdentifier().isImplements() || node.getMethodIdentifier().isImplementing())
{
try
{
boolean exactSuper = node.getMethodIdentifier().isImplements(); //Implementing will check all super classes
ClassExpression implemented = node.getMethodIdentifier().getImplementsExpression();
if (ctMethod != null)
{
if (Util.methodExistsInSuperClassOrInterface(ctMethod, implemented, exactSuper))
{
return true;
}
}
else
{
if (Util.methodExistsInSuperClassOrInterface(refMethod, implemented, exactSuper, advisor))
{
return true;
}
}
}
catch (Exception e)
{
throw new RuntimeException(e);
}
return false;
}
else
{
if (!node.getMethodIdentifier().matches(methodName)) return false;
}
return true;
}
protected boolean matchesExceptions(ASTMethod node)
{
//Match exceptions
ArrayList<ASTException> nodeExceptions = node.getExceptions();
if (nodeExceptions.size() > 0)
{
if (ctMethod != null)
{
try
{
if (!Util.matchExceptions(nodeExceptions, ctMethod.getExceptionTypes()))
{
return false;
}
}
catch (NotFoundException e)
{
throw new RuntimeException(e);
}
}
else
{
if (!Util.matchExceptions(nodeExceptions, refMethod.getExceptionTypes()))
{
return false;
}
}
}
return true;
}
protected boolean matchesReturnType(ASTMethod node)
{
try
{
if (ctMethod != null)
{
if (!Util.matchesClassExpr(node.getReturnType(), ctMethod.getReturnType(), advisor)) return false;
}
else
{
if (!Util.matchesClassExpr(node.getReturnType(), refMethod.getReturnType(), advisor)) return false;
}
}
catch (NotFoundException nfe)
{
throw new RuntimeException(nfe);
}
return true;
}
protected boolean matchesParameters(ASTMethod node)
{
if (ctMethod != null)
{
return Util.matchesParameters(advisor, node, ctMethod);
}
else
{
return Util.matchesParameters(advisor, node, refMethod);
}
}
}