All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.sun.faces.facelets.el.DefaultFunctionMapper Maven / Gradle / Ivy

Go to download

This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.

There is a newer version: 2.4.0
Show newest version
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * 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_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * 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
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 *
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * Copyright 2005-2007 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.faces.facelets.el;

import com.sun.faces.facelets.util.ReflectionUtil;

import javax.el.FunctionMapper;
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.Iterator;
import java.util.Map;

/**
 * Default implementation of the FunctionMapper
 *
 * @author Jacob Hookom
 * @version $Id$
 * @see java.lang.reflect.Method
 * @see javax.el.FunctionMapper
 */
public final class DefaultFunctionMapper extends FunctionMapper implements
                                                                Externalizable {

    private static final long serialVersionUID = 1L;

    private 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 String toString() {
        StringBuffer sb = new StringBuffer(128);
        sb.append("FunctionMapper[\n");
        for (Iterator itr = this.functions.values().iterator();
             itr.hasNext();) {
            sb.append(itr.next()).append('\n');
        }
        sb.append(']');
        return sb.toString();
    }

    private static class Function implements Externalizable {

        private static final long serialVersionUID = 1L;

        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);
            out.writeUTF(this.m.getDeclaringClass().getName());
            out.writeUTF(this.m.getName());
            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 = ReflectionUtil.forName(this.owner);
                    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();
        }

        public String toString() {
            StringBuffer sb = new StringBuffer(32);
            sb.append("Function[");
            if (this.prefix != null) {
                sb.append(this.prefix).append(':');
            }
            sb.append(this.name).append("] ");
            sb.append(this.m);
            return sb.toString();
        }
    }
}




© 2015 - 2024 Weber Informatics LLC | Privacy Policy