org.apache.shale.test.mock.MockApplicationMap Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.shale.test.mock;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletContext;
/**
* Mock impementation of Map for the application scope
* attributes managed by {@link MockExternalContext}.
*
* $Id$
*/
class MockApplicationMap implements Map {
// ------------------------------------------------------------ Constructors
/**
* Construct a default instance.
*
* @param context ServletContext whose attributes we are wrapping
*/
public MockApplicationMap(ServletContext context) {
this.context = context;
}
// ----------------------------------------------------- Mock Object Methods
// ------------------------------------------------------ Instance Variables
/**
* The ServletContext instance we are wrapping.
*/
private ServletContext context = null;
// ------------------------------------------------------------- Map Methods
/** {@inheritDoc} */
public void clear() {
Iterator keys = keySet().iterator();
while (keys.hasNext()) {
context.removeAttribute((String) keys.next());
}
}
/** {@inheritDoc} */
public boolean containsKey(Object key) {
return context.getAttribute(key(key)) != null;
}
/** {@inheritDoc} */
public boolean containsValue(Object value) {
if (value == null) {
return false;
}
Enumeration keys = context.getAttributeNames();
while (keys.hasMoreElements()) {
Object next = context.getAttribute((String) keys.nextElement());
if (next == value) {
return true;
}
}
return false;
}
/** {@inheritDoc} */
public Set entrySet() {
Set set = new HashSet();
Enumeration keys = context.getAttributeNames();
while (keys.hasMoreElements()) {
set.add(context.getAttribute((String) keys.nextElement()));
}
return set;
}
/** {@inheritDoc} */
public boolean equals(Object o) {
return context.equals(o);
}
/** {@inheritDoc} */
public Object get(Object key) {
return context.getAttribute(key(key));
}
/** {@inheritDoc} */
public int hashCode() {
return context.hashCode();
}
/** {@inheritDoc} */
public boolean isEmpty() {
return size() < 1;
}
/** {@inheritDoc} */
public Set keySet() {
Set set = new HashSet();
Enumeration keys = context.getAttributeNames();
while (keys.hasMoreElements()) {
set.add(keys.nextElement());
}
return set;
}
/** {@inheritDoc} */
public Object put(Object key, Object value) {
if (value == null) {
return remove(key);
}
String skey = key(key);
Object previous = context.getAttribute(skey);
context.setAttribute(skey, value);
return previous;
}
/** {@inheritDoc} */
public void putAll(Map map) {
Iterator keys = map.keySet().iterator();
while (keys.hasNext()) {
String key = (String) keys.next();
context.setAttribute(key, map.get(key));
}
}
/** {@inheritDoc} */
public Object remove(Object key) {
String skey = key(key);
Object previous = context.getAttribute(skey);
context.removeAttribute(skey);
return previous;
}
/** {@inheritDoc} */
public int size() {
int n = 0;
Enumeration keys = context.getAttributeNames();
while (keys.hasMoreElements()) {
keys.nextElement();
n++;
}
return n;
}
/** {@inheritDoc} */
public Collection values() {
List list = new ArrayList();
Enumeration keys = context.getAttributeNames();
while (keys.hasMoreElements()) {
list.add(context.getAttribute((String) keys.nextElement()));
}
return list;
}
/**
* Return the specified key, converted to a String.
*
* @param key The key to convert
*/
private String key(Object key) {
if (key == null) {
throw new IllegalArgumentException();
} else if (key instanceof String) {
return (String) key;
} else {
return key.toString();
}
}
}