rdonkin 2003/08/21 15:40:03
Added: betwixt/src/java/org/apache/commons/betwixt/io/read
ReadContext.java
Log:
Reafactored read bean creation into chain of independet creators. It can now be
extended by users.
Revision Changes Path
1.1
jakarta-commons/betwixt/src/java/org/apache/commons/betwixt/io/read/ReadContext.java
Index: ReadContext.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/betwixt/src/java/org/apache/commons/betwixt/io/read/ReadContext.java,v
1.1 2003/08/21 22:40:03 rdonkin Exp $
* $Revision: 1.1 $
* $Date: 2003/08/21 22:40:03 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* $Id: ReadContext.java,v 1.1 2003/08/21 22:40:03 rdonkin Exp $
*/
package org.apache.commons.betwixt.io.read;
import java.util.HashMap;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.betwixt.BindingConfiguration;
import org.apache.commons.betwixt.expression.Context;
/**
* Extends <code>Context</code> to provide read specific functionality.
*
* @author Robert Burrell Donkin
* @version $Revision: 1.1 $
*/
public class ReadContext extends Context {
/** Beans indexed by ID strings */
private HashMap beansById = new HashMap();
/** Classloader to be used to load beans during reading */
private ClassLoader classLoader;
/** The read specific configuration */
private ReadConfiguration readConfiguration;
/**
* Constructs a <code>ReadContext</code> with the same settings
* as an existing <code>Context</code>.
* @param context not null
* @param readConfiguration not null
*/
public ReadContext( Context context, ReadConfiguration readConfiguration ) {
super( context );
this.readConfiguration = readConfiguration;
}
/**
* Constructs a <code>ReadContext</code> with standard log.
* @param bindingConfiguration the dynamic configuration, not null
* @param readConfiguration the extra read configuration not null
*/
public ReadContext(
BindingConfiguration bindingConfiguration,
ReadConfiguration readConfiguration ) {
this(
LogFactory.getLog( ReadContext.class ),
bindingConfiguration,
readConfiguration);
}
/**
* Base constructor
* @param log log to this Log
* @param bindingConfiguration the dynamic configuration, not null
* @param readConfiguration the extra read configuration not null
*/
public ReadContext(
Log log,
BindingConfiguration bindingConfiguration,
ReadConfiguration readConfiguration ) {
super( null, log , bindingConfiguration );
this.readConfiguration = readConfiguration;
}
/**
* Constructs a <code>ReadContext</code> with the same settings as an existing
<code>Context</code>.
* @param readContext not null
* @param readConfiguration not null
*/
public ReadContext( ReadContext readContext ) {
super( readContext );
beansById = readContext.beansById;
classLoader = readContext.classLoader;
readConfiguration = readContext.readConfiguration;
}
/**
* Puts a bean into storage indexed by an (xml) ID.
*
* @param id the ID string of the xml element associated with the bean
* @param bean the Object to store, not null
*/
public void putBean( String id, Object bean ) {
beansById.put( id, bean );
}
/**
* Gets a bean from storage by an (xml) ID.
*
* @param id the ID string of the xml element associated with the bean
* @return the Object that the ID references, otherwise null
*/
public Object getBean( String id ) {
return beansById.get( id );
}
/**
* Clears the beans indexed by id.
*/
public void clearBeans() {
beansById.clear();
}
/**
* Gets the classloader to be used.
* @return the classloader that should be used to load all classes, possibly
null
*/
public ClassLoader getClassLoader() {
return classLoader;
}
/**
* Sets the classloader to be used.
* @param classLoader the ClassLoader to be used, possibly null
*/
public void setClassLoader( ClassLoader classLoader ) {
this.classLoader = classLoader;
}
/**
* Gets the <code>BeanCreationChange</code> to be used to create beans
* when an element is mapped.
* @return the BeanCreationChain not null
*/
public BeanCreationChain getBeanCreationChain() {
return readConfiguration.getBeanCreationChain();
}
}
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