127 lines
3.6 KiB
Java
127 lines
3.6 KiB
Java
/*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
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*
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* Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
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* WARRANTY OF ANY KIND, either express or implied. See the License for the specific
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* language governing rights and limitations under the License.
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*
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* The Original Code is the Venice Web Communities System.
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*
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* The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
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* for Silverwrist Design Studios. Portions created by Eric J. Bowersox are
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* Copyright (C) 2002 Eric J. Bowersox/Silverwrist Design Studios. All Rights Reserved.
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*
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* Contributor(s):
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*/
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package com.silverwrist.dynamo.obj;
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import java.util.*;
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import com.silverwrist.dynamo.iface.*;
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public class JavaObjectBindery
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{
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/*--------------------------------------------------------------------------------
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* Static data members
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*--------------------------------------------------------------------------------
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*/
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private static JavaObjectBindery _self = null;
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/*--------------------------------------------------------------------------------
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* Attributes
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*--------------------------------------------------------------------------------
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*/
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private HashMap m_class_to_dc; // Class object to DynamicClass
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private HashMap m_name_to_dc; // classname to DynamicClass
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/*--------------------------------------------------------------------------------
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* Constructor
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*--------------------------------------------------------------------------------
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*/
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private JavaObjectBindery()
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{
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m_class_to_dc = new HashMap();
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m_name_to_dc = new HashMap();
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} // end constructor
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/*--------------------------------------------------------------------------------
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* External operations
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*--------------------------------------------------------------------------------
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*/
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public synchronized DynamicClass lookupClass(Class klass)
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{
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DynamicClass rc = (DynamicClass)(m_class_to_dc.get(klass));
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if (rc==null)
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{ // create new class object and register it
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rc = new JavaDynamicClass(klass);
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m_class_to_dc.put(klass,rc);
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m_name_to_dc.put(klass.getName(),rc);
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} // end if
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return rc;
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} // end lookupClass
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public synchronized DynamicClass lookupClass(String name)
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{
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DynamicClass rc = (DynamicClass)(m_name_to_dc.get(name));
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if (rc==null)
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{ // class not present, try loading it
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try
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{ // but we have to load the regular class first
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Class klass = Class.forName(name);
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rc = new JavaDynamicClass(klass);
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m_class_to_dc.put(klass,rc);
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m_name_to_dc.put(name,rc);
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} // end try
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catch (ClassNotFoundException e)
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{ // no class found...
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return null; // TODO: exception?
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} // end catch
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} // end if
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return rc;
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} // end lookupClass
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public synchronized void bind(String name, Class klass)
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{
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DynamicClass dc = new JavaDynamicClass(klass);
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m_class_to_dc.put(klass,dc);
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m_name_to_dc.put(name,dc);
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} // end bind
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public synchronized void bind(Class klass)
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{
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bind(klass.getName(),klass);
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} // end bind
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/*--------------------------------------------------------------------------------
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* External static operations
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*--------------------------------------------------------------------------------
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*/
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public static synchronized JavaObjectBindery get()
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{
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if (_self==null)
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_self = new JavaObjectBindery();
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return _self;
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} // end get
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} // end class JavaObjectBindery
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