org.directwebremoting.json.JsonObject Maven / Gradle / Ivy

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DWR is easy Ajax for Java. It makes it simple to call Java code directly from Javascript. It gets rid of almost all the boiler plate code between the web browser and your Java code.
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/*
 * Copyright 2005 Joe Walker
 *
 * 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 org.directwebremoting.json;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.directwebremoting.util.JavascriptUtil;

/**
 * In official JSON parlance this should be called Object, however this would
 * cause confusion with {@link java.lang.Object} which is auto-imported.
 * @author Joe Walker [joe at getahead dot ltd dot uk]
 */
public class JsonObject extends JsonValue implements Map
{
    /* (non-Javadoc)
     * @see org.directwebremoting.json.JsonValue#toExternalRepresentation()
     */
    @Override
    public String toExternalRepresentation()
    {
        StringBuffer output = new StringBuffer();
        output.append("{ ");

        boolean isFirst = true;
        for (Map.Entry entry : proxy.entrySet())
        {
            if (isFirst)
            {
                isFirst = false;
            }
            else
            {
                output.append(", ");
            }

            output.append('\'');
            output.append(JavascriptUtil.escapeJavaScript(entry.getKey()));
            output.append("':");
            output.append(entry.getValue().toExternalRepresentation());
        }
        output.append(" }");
        return output.toString();
    }

    /* (non-Javadoc)
     * @see java.util.Map#clear()
     */
    public void clear()
    {
        proxy.clear();
    }

    /* (non-Javadoc)
     * @see java.util.Map#containsKey(java.lang.Object)
     */
    public boolean containsKey(Object key)
    {
        return proxy.containsKey(key);
    }

    /* (non-Javadoc)
     * @see java.util.Map#containsValue(java.lang.Object)
     */
    public boolean containsValue(Object value)
    {
        return proxy.containsValue(value);
    }

    /* (non-Javadoc)
     * @see java.util.Map#entrySet()
     */
    public Set> entrySet()
    {
        return proxy.entrySet();
    }

    /* (non-Javadoc)
     * @see java.util.Map#get(java.lang.Object)
     */
    public JsonValue get(Object key)
    {
        return proxy.get(key);
    }

    /* (non-Javadoc)
     * @see java.util.Map#isEmpty()
     */
    public boolean isEmpty()
    {
        return proxy.isEmpty();
    }

    /* (non-Javadoc)
     * @see java.util.Map#keySet()
     */
    public Set keySet()
    {
        return proxy.keySet();
    }

    /* (non-Javadoc)
     * @see java.util.Map#put(java.lang.Object, java.lang.Object)
     */
    public JsonValue put(String key, JsonValue value)
    {
        return proxy.put(key, value);
    }

    /* (non-Javadoc)
     * @see java.util.Map#putAll(java.util.Map)
     */
    public void putAll(Map otherMap)
    {
        proxy.putAll(otherMap);
    }

    /* (non-Javadoc)
     * @see java.util.Map#remove(java.lang.Object)
     */
    public JsonValue remove(Object key)
    {
        return proxy.remove(key);
    }

    /* (non-Javadoc)
     * @see java.util.Map#size()
     */
    public int size()
    {
        return proxy.size();
    }

    /* (non-Javadoc)
     * @see java.util.Map#values()
     */
    public Collection values()
    {
        return proxy.values();
    }

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString()
    {
        return toExternalRepresentation();
    }

    /* (non-Javadoc)
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object o)
    {
        return proxy.equals(o);
    }

    /* (non-Javadoc)
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode()
    {
        return proxy.hashCode();
    }

    /**
     * Where we store the values
     */
    private Map proxy = new HashMap();
}