/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.beans.metadata.plugins;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.jboss.beans.info.spi.BeanInfo;
import org.jboss.beans.metadata.spi.ValueMetaData;
import org.jboss.joinpoint.spi.Joinpoint;
import org.jboss.reflect.spi.ClassInfo;
import org.jboss.reflect.spi.TypeInfo;
import org.jboss.util.JBossStringBuilder;
/**
* Map metadata.
*
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 1.10 $
*/
public class AbstractMapMetaData extends AbstractTypeMetaData implements Map
{
/** The map */
private HashMap map = new HashMap();
/** The key type */
protected String keyType;
/** The value type */
protected String valueType;
/**
* Create a new map value
*/
public AbstractMapMetaData()
{
}
/**
* Get the key type
*
* @return the key type
*/
public String getKeyType()
{
return keyType;
}
/**
* Set the key type
*
* @param keyType the key type
*/
public void setKeyType(String keyType)
{
this.keyType = keyType;
}
/**
* Get the value type
*
* @return the value type
*/
public String getValueType()
{
return valueType;
}
/**
* Set the value type
*
* @param valueType the value type
*/
public void setValueType(String valueType)
{
this.valueType = valueType;
}
public Object getValue(TypeInfo info, ClassLoader cl) throws Throwable
{
Map result = (Map) getMapInstance(info, cl, Map.class);
if (result == null)
result = (Map) getDefaultMapInstance();
TypeInfo keyTypeInfo = getKeyClassInfo(cl);
TypeInfo valueTypeInfo = getValueClassInfo(cl);
if (map.size() > 0)
{
for (Iterator i = map.entrySet().iterator(); i.hasNext();)
{
Map.Entry entry = (Map.Entry) i.next();
ValueMetaData key = (ValueMetaData) entry.getKey();
ValueMetaData value = (ValueMetaData) entry.getValue();
Object keyValue = key.getValue(keyTypeInfo, cl);
Object valueValue = value.getValue(valueTypeInfo, cl);
result.put(keyValue, valueValue);
}
}
return result;
}
public void clear()
{
map.clear();
}
public boolean containsKey(Object key)
{
return map.containsKey(key);
}
public boolean containsValue(Object value)
{
return map.containsValue(value);
}
public Set entrySet()
{
return map.entrySet();
}
public Object get(Object key)
{
return map.get(key);
}
public boolean isEmpty()
{
return map.isEmpty();
}
public Set keySet()
{
return map.keySet();
}
public Object put(Object key, Object value)
{
return map.put(key, value);
}
public void putAll(Map t)
{
map.putAll(t);
}
public Object remove(Object key)
{
return map.remove(key);
}
public int size()
{
return map.size();
}
public Collection values()
{
return map.values();
}
public Iterator getChildren()
{
ArrayList children = new ArrayList(map.keySet());
children.addAll(map.values());
return children.iterator();
}
public void toString(JBossStringBuilder buffer)
{
super.toString(buffer);
}
/**
* Create the default map instance
*
* @return the class instance
* @throws Throwable for any error
*/
protected Object getDefaultMapInstance() throws Throwable
{
return new HashMap();
}
/**
* Create the map instance
*
* @param info the request type
* @param cl the classloader
* @param expected the expected class
* @return the class instance
* @throws Throwable for any error
*/
protected Object getMapInstance(TypeInfo info, ClassLoader cl, Class expected) throws Throwable
{
TypeInfo typeInfo = getClassInfo(cl);
if (typeInfo != null && typeInfo instanceof ClassInfo == false)
throw new IllegalArgumentException(typeInfo.getName() + " is not a class");
if (typeInfo != null && ((ClassInfo) typeInfo).isInterface())
throw new IllegalArgumentException(typeInfo.getName() + " is an interface");
if (typeInfo == null)
{
// No type specified
if (info == null)
return null;
// Not a class
if (info instanceof ClassInfo == false)
return null;
// Not an interface
if (((ClassInfo) info).isInterface())
return null;
// Type is too general
if (Object.class.getName().equals(info.getName()))
return null;
// Try to use the passed type
typeInfo = info;
}
BeanInfo beanInfo = configurator.getBeanInfo(typeInfo.getType());
Joinpoint constructor = configurator.getConstructorJoinPoint(beanInfo);
Object result = constructor.dispatch();
if (expected.isAssignableFrom(result.getClass()) == false)
throw new ClassCastException(result.getClass() + " is not a " + expected.getName());
return result;
}
/**
* Get the class info for the key type
*
* @param cl the classloader
* @return the class info
* @throws Throwable for any error
*/
protected ClassInfo getKeyClassInfo(ClassLoader cl) throws Throwable
{
if (keyType == null)
return null;
return configurator.getClassInfo(keyType, cl);
}
/**
* Get the class info for the value type
*
* @param cl the classloader
* @return the class info
* @throws Throwable for any error
*/
protected ClassInfo getValueClassInfo(ClassLoader cl) throws Throwable
{
if (valueType == null)
return null;
return configurator.getClassInfo(valueType, cl);
}
}