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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xml.core.internal.validation.errorcustomization;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* The error customization regsitry manages all registered
* IErrorMessageCustomizers by namespace.
*/
public class ErrorCustomizationRegistry
{
protected static ErrorCustomizationRegistry registry = null;
protected Map customizers = new HashMap();
/**
* Restricted constructor in keeping with the singleton pattern.
*/
protected ErrorCustomizationRegistry()
{
}
/**
* Get the one and only instance of the registry.
*
* @return
* The one and only instance of the registry.
*/
public static ErrorCustomizationRegistry getInstance()
{
if(registry == null)
{
registry = new ErrorCustomizationRegistry();
}
return registry;
}
/**
* Add a customizer to the registry.
*
* @param namespace
* The namespace the customizer will act on.
* @param customizer
* The error customizer to register.
*/
public void addErrorMessageCustomizer(String namespace, IErrorMessageCustomizer customizer)
{
// To register a customizer for the no namespace use an empty string.
if(namespace == null)
{
namespace = ""; //$NON-NLS-1$
}
List customizersForNS = (List)customizers.get(namespace);
if(customizersForNS == null)
{
customizersForNS = new ArrayList();
customizers.put(namespace, customizersForNS);
}
if(customizer != null)
{
customizersForNS.add(customizer);
}
}
/**
* Get the error customizers for a given namespace.
*
* @param namespace
* The namespace for which to retrieve the customizers.
* @return
* An array of customizers registered for this namespace.
*/
public IErrorMessageCustomizer[] getCustomizers(String namespace)
{
if(namespace == null)
{
namespace = ""; //$NON-NLS-1$
}
List customizersForNS = (List)customizers.get(namespace);
if(customizersForNS == null)
{
customizersForNS = new ArrayList();
}
return (IErrorMessageCustomizer[])customizersForNS.toArray(new IErrorMessageCustomizer[customizersForNS.size()]);
}
}
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