/*
* 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.introduction;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.io.StringReader;
import org.jboss.aop.Advisor;
import org.jboss.aop.pointcut.TypeMatcher;
import org.jboss.aop.pointcut.Util;
import org.jboss.aop.pointcut.ast.ASTStart;
import org.jboss.aop.pointcut.ast.ClassExpression;
import org.jboss.aop.pointcut.ast.TypeExpressionParser;
import org.jboss.aop.pointcut.ast.ParseException;
import javassist.CtClass;
/**
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 62496 $
*/
public class InterfaceIntroduction
{
public static class Mixin
{
protected String classname;
protected String[] interfaces;
protected String construction;
protected boolean trans;
public Mixin() {}
public Mixin(String classname, String[] interfaces, String construction, boolean trans)
{
this.classname = classname;
this.interfaces = interfaces;
this.construction = construction;
this.trans = trans;
}
public String getClassName()
{
return classname;
}
public String[] getInterfaces()
{
return interfaces;
}
public String getConstruction()
{
return construction;
}
public boolean isTransient()
{
return trans;
}
public void setClassname(String classname)
{
this.classname = classname;
}
public void setInterfaces(String[] interfaces)
{
this.interfaces = interfaces;
}
public void setConstruction(String construction)
{
this.construction = construction;
}
public void setTrans(boolean trans)
{
this.trans = trans;
}
}
protected String name;
protected ArrayList<WeakReference<Advisor>> advisors = new ArrayList<WeakReference<Advisor>>();
protected String[] interfaces;
protected ArrayList<InterfaceIntroduction.Mixin> mixins = new ArrayList<InterfaceIntroduction.Mixin>();
protected ClassExpression classExpr;
protected ASTStart ast;
protected String constructorClass; // name of the class containing the mixin constructor method
protected String constructorMethod; // name of the mixin constructor method
public InterfaceIntroduction()
{
}
public InterfaceIntroduction(String name, String exp, String[] interfaces)
{
this.name = name;
this.interfaces = interfaces;
this.classExpr = new ClassExpression(exp);
}
// call this constructor only when constructor method receives the mixin target
// as parameter, for posterior validation of constructor method signature
public InterfaceIntroduction(String name, String exp, String[] interfaces,
String constructorClass, String constructorMethod)
{
this(name, exp, interfaces);
this.constructorClass = constructorClass;
this.constructorMethod = constructorMethod;
}
public InterfaceIntroduction(String name, ASTStart ast, String[] interfaces)
{
this.name = name;
this.ast = ast;
this.interfaces = interfaces;
}
// call this constructor only when constructor method receives the mixin target
// as parameter, for posterior validation of constructor method signature
public InterfaceIntroduction(String name, ASTStart ast, String[] interfaces,
String constructorClass, String constructorMethod)
{
this(name, ast, interfaces);
this.constructorClass = constructorClass;
this.constructorMethod = constructorMethod;
}
public void setClassExpression(String exp)
{
this.classExpr = new ClassExpression(exp);
}
public void setTypeExpression(String exp)
{
try
{
ast = new TypeExpressionParser(new StringReader(exp)).Start();
}
catch (ParseException e)
{
throw new RuntimeException(e);
}
}
public void setMixins(ArrayList<InterfaceIntroduction.Mixin> mixins)
{
this.mixins = mixins;
}
public void addMixin(Mixin mixin)
{
mixins.add(mixin);
}
public void setInterfaces(String[] interfaces)
{
this.interfaces = interfaces;
}
public void setName(String name)
{
this.name = name;
}
public String getName()
{
return name;
}
public String[] getInterfaces()
{
return interfaces;
}
public ArrayList<InterfaceIntroduction.Mixin> getMixins()
{
return mixins;
}
// this value is set only when there is a mixin constructor method and this
// method receives the target as parameter
public String getConstructorClass()
{
return this.constructorClass;
}
// this value is set only when there is a mixin constructor method and this
// method receives the target as parameter
public String getConstructorMethod()
{
return this.constructorMethod;
}
public void addAdvisor(Advisor advisor)
{
advisors.add(new WeakReference<Advisor>(advisor));
advisor.addInterfaceIntroduction(this);
}
public void clearAdvisors()
{
for (int i = 0; i < advisors.size(); i++)
{
Advisor advisor = advisors.get(i).get();
if (advisor != null)
advisor.removeInterfaceIntroduction(this);
}
}
public boolean equals(Object obj)
{
if (obj == this) return true;
if (!(obj instanceof InterfaceIntroduction)) return false;
return ((InterfaceIntroduction) obj).getName().equals(name);
}
public int hashCode()
{
return name.hashCode();
}
public String getClassExpr()
{
if (classExpr == null) return null;
return classExpr.getOriginal();
}
public ASTStart getAst()
{
return ast;
}
public boolean matches(Advisor advisor, CtClass clazz) throws Exception
{
if (classExpr != null)
return Util.matchesClassExpr(classExpr, clazz, advisor);
else
{
TypeMatcher matcher = new TypeMatcher(advisor, clazz);
return ((Boolean) ast.jjtAccept(matcher, null)).booleanValue();
}
}
public boolean matches(Advisor advisor, Class clazz)
{
if (classExpr != null)
return Util.matchesClassExpr(classExpr, clazz, advisor);
else
{
TypeMatcher matcher = new TypeMatcher(advisor, clazz);
return ((Boolean) ast.jjtAccept(matcher, null)).booleanValue();
}
}
}