/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.script.javascript.support;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.Wrapper;
import java.util.Iterator;
import java.util.Map;
/**
* Wrapper for exposing maps in Rhino scripts.
*
*
*/
public class NativeMap implements Scriptable, Wrapper {
private static final long serialVersionUID = 3664761893203964569L;
private Map<Object, Object> map;
private Scriptable parentScope;
private Scriptable prototype;
/**
* Construct
*
* @return native map
*/
public static NativeMap wrap(Scriptable scope, Map<Object, Object> map) {
return new NativeMap(scope, map);
}
/**
* Construct
*/
private NativeMap(Scriptable scope, Map<Object, Object> map) {
this.parentScope = scope;
this.map = map;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Wrapper#unwrap()
*/
public Object unwrap() {
return map;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#getClassName()
*/
public String getClassName() {
return "NativeMap";
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#get(java.lang.String, org.mozilla.javascript.Scriptable)
*/
public Object get(String name, Scriptable start) {
// get the property from the underlying QName map
if ("length".equals(name)) {
return map.size();
} else {
return map.get(name);
}
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#get(int, org.mozilla.javascript.Scriptable)
*/
public Object get(int index, Scriptable start) {
Object value = null;
int i = 0;
Iterator itrValues = map.values().iterator();
while (i++ <= index && itrValues.hasNext()) {
value = itrValues.next();
}
return value;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#has(java.lang.String, org.mozilla.javascript.Scriptable)
*/
public boolean has(String name, Scriptable start) {
// locate the property in the underlying map
return map.containsKey(name);
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#has(int, org.mozilla.javascript.Scriptable)
*/
public boolean has(int index, Scriptable start) {
return (index >= 0 && map.values().size() > index);
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#put(java.lang.String, org.mozilla.javascript.Scriptable, java.lang.Object)
*/
@SuppressWarnings("unchecked")
public void put(String name, Scriptable start, Object value) {
map.put(name, value);
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#put(int, org.mozilla.javascript.Scriptable, java.lang.Object)
*/
public void put(int index, Scriptable start, Object value) {
// TODO: implement?
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#delete(java.lang.String)
*/
public void delete(String name) {
map.remove(name);
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#delete(int)
*/
public void delete(int index) {
int i = 0;
Iterator itrKeys = map.keySet().iterator();
while (i <= index && itrKeys.hasNext()) {
Object key = itrKeys.next();
if (i == index) {
map.remove(key);
break;
}
}
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#getPrototype()
*/
public Scriptable getPrototype() {
return this.prototype;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#setPrototype(org.mozilla.javascript.Scriptable)
*/
public void setPrototype(Scriptable prototype) {
this.prototype = prototype;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#getParentScope()
*/
public Scriptable getParentScope() {
return this.parentScope;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#setParentScope(org.mozilla.javascript.Scriptable)
*/
public void setParentScope(Scriptable parent) {
this.parentScope = parent;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#getIds()
*/
public Object[] getIds() {
return map.keySet().toArray();
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#getDefaultValue(java.lang.Class)
*/
public Object getDefaultValue(Class hint) {
return null;
}
/* (non-Javadoc)
* @see org.mozilla.javascript.Scriptable#hasInstance(org.mozilla.javascript.Scriptable)
*/
public boolean hasInstance(Scriptable value) {
if (!(value instanceof Wrapper))
return false;
Object instance = ((Wrapper) value).unwrap();
return Map.class.isInstance(instance);
}
}