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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
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*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
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*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
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*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
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*/
package com.sun.el.lang;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import javax.el.FunctionMapper;
import com.sun.el.util.ReflectionUtil;
/**
* @author Jacob Hookom [jacob@hookom.net]
* @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: tcfujii $
*/
public class FunctionMapperImpl extends FunctionMapper implements
Externalizable {
private static final long serialVersionUID = 1L;
protected Map functions = null;
/*
* (non-Javadoc)
*
* @see javax.el.FunctionMapper#resolveFunction(java.lang.String,
* java.lang.String)
*/
public Method resolveFunction(String prefix, String localName) {
if (this.functions != null) {
Function f = (Function) this.functions.get(prefix + ":" + localName);
return f.getMethod();
}
return null;
}
public void addFunction(String prefix, String localName, Method m) {
if (this.functions == null) {
this.functions = new HashMap();
}
Function f = new Function(prefix, localName, m);
synchronized (this) {
this.functions.put(prefix+":"+localName, f);
}
}
/*
* (non-Javadoc)
*
* @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
*/
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(this.functions);
}
/*
* (non-Javadoc)
*
* @see java.io.Externalizable#readExternal(java.io.ObjectInput)
*/
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
this.functions = (Map) in.readObject();
}
public static class Function implements Externalizable {
protected transient Method m;
protected String owner;
protected String name;
protected String[] types;
protected String prefix;
protected String localName;
/**
*
*/
public Function(String prefix, String localName, Method m) {
if (localName == null) {
throw new NullPointerException("LocalName cannot be null");
}
if (m == null) {
throw new NullPointerException("Method cannot be null");
}
this.prefix = prefix;
this.localName = localName;
this.m = m;
}
public Function() {
// for serialization
}
/*
* (non-Javadoc)
*
* @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
*/
public void writeExternal(ObjectOutput out) throws IOException {
out.writeUTF((this.prefix != null) ? this.prefix : "");
out.writeUTF(this.localName);
if (this.owner != null) {
out.writeUTF(this.owner);
} else {
out.writeUTF(this.m.getDeclaringClass().getName());
}
if (this.name != null) {
out.writeUTF(this.name);
} else {
out.writeUTF(this.m.getName());
}
if (this.types != null) {
out.writeObject(this.types);
} else {
out.writeObject(ReflectionUtil.toTypeNameArray(this.m.getParameterTypes()));
}
}
/*
* (non-Javadoc)
*
* @see java.io.Externalizable#readExternal(java.io.ObjectInput)
*/
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
this.prefix = in.readUTF();
if ("".equals(this.prefix)) this.prefix = null;
this.localName = in.readUTF();
this.owner = in.readUTF();
this.name = in.readUTF();
this.types = (String[]) in.readObject();
}
public Method getMethod() {
if (this.m == null) {
try {
Class t = Class.forName(this.owner, false,
Thread.currentThread().getContextClassLoader());
Class[] p = ReflectionUtil.toTypeArray(this.types);
this.m = t.getMethod(this.name, p);
} catch (Exception e) {
e.printStackTrace();
}
}
return this.m;
}
public boolean matches(String prefix, String localName) {
if (this.prefix != null) {
if (prefix == null) return false;
if (!this.prefix.equals(prefix)) return false;
}
return this.localName.equals(localName);
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object obj) {
if (obj instanceof Function) {
return this.hashCode() == obj.hashCode();
}
return false;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
return (this.prefix + this.localName).hashCode();
}
}
}
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