/* *****************************************************************************
* JFire - it's hot - Free ERP System - http://jfire.org *
* Copyright (C) 2004-2005 NightLabs - http://NightLabs.org *
* *
* This library 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 library 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 library; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, *
* Boston, MA 02110-1301 USA *
* *
* Or get it online : *
* http://opensource.org/licenses/lgpl-license.php *
* *
* *
******************************************************************************/
package org.nightlabs.jfire.trade.ui.articlecontainer.detail;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.nightlabs.eclipse.extension.AbstractEPProcessor;
import org.nightlabs.eclipse.extension.EPProcessorException;
import org.nightlabs.jfire.store.ProductType;
import org.nightlabs.jfire.trade.SegmentType;
/**
* @author Marco Schulze - marco at nightlabs dot de
*/
public abstract class SegmentTypeProductTypeDependentFactoryRegistry
extends AbstractEPProcessor
{
/**
* key: String articleContainerClass<br/>
* value: Map {<br/>
* key: String segmentTypeClass<br/>
* value: Map {<br/>
* key: String productTypeClass<br/>
* value: SegmentTypeProductTypeDependentFactory factory
* }
* }
*/
protected Map<String, Map<String, Map<String, SegmentTypeProductTypeDependentFactory>>> factories = new HashMap<String, Map<String,Map<String,SegmentTypeProductTypeDependentFactory>>>();
/**
* This method finds a <tt>SegmentTypeProductTypeDependentFactory</tt> according to the given
* parameters. For <tt>segmentTypeClass</tt> and <tt>productTypeClass</tt>,
* the inheritence tree will be iterated in case no direct match exists.
* The inheritance search will first try to find a closer match for the
* <tt>segmentTypeClass</tt>, then for the <tt>productTypeClass</tt>.
* Note, that this behaviour might still change!!!
*
* @param articleContainerClass
* @param segmentTypeClass
* @param productTypeClass
* @param throwExceptionIfNotFound Whether or not to throw an {@link IllegalStateException}. If <tt>false</tt>, <tt>null</tt> will be returned instead.
* @return An instance of <tt>SegmentTypeProductTypeDependentFactory</tt> or <tt>null</tt> (if allowed).
*/
protected SegmentTypeProductTypeDependentFactory getFactory(
Class<?> articleContainerClass, Class<? extends SegmentType> segmentTypeClass,
Class<? extends ProductType> productTypeClass, boolean throwExceptionIfNotFound)
{
Class<?> articleContainerC = articleContainerClass;
SegmentTypeProductTypeDependentFactory factory = null;
while (articleContainerC != null) {
factory = getFactory(articleContainerC.getName(), segmentTypeClass, productTypeClass, false);
if (factory != null)
return factory;
Class<?>[] interfaces = articleContainerC.getInterfaces();
for (int i = 0; i < interfaces.length; i++) {
factory = getFactory(interfaces[i].getName(), segmentTypeClass, productTypeClass, false);
if (factory != null)
return factory;
}
articleContainerC = articleContainerC.getSuperclass();
}
if (throwExceptionIfNotFound && factory == null)
throw new IllegalStateException(
"Nothing registered for articleContainerClass=\"" //$NON-NLS-1$
+ articleContainerClass.getName() + "\", segmentTypeClass=\"" //$NON-NLS-1$
+ segmentTypeClass.getName() + "\" " //$NON-NLS-1$
+ " productTypeClass=\"" + productTypeClass.getName() + "\" (or a super-class)!" //$NON-NLS-1$ //$NON-NLS-2$
);
return factory;
}
private SegmentTypeProductTypeDependentFactory getFactory(
String articleContainerClass, Class<? extends SegmentType> segmentTypeClass,
Class<? extends ProductType> productTypeClass, boolean throwExceptionIfNotFound)
{
Map<String, Map<String, SegmentTypeProductTypeDependentFactory>> aefsBySegmentTypeClass = factories.get(articleContainerClass);
if (aefsBySegmentTypeClass == null) {
if (throwExceptionIfNotFound)
throw new IllegalStateException("No SegmentTypeProductTypeDependentFactory registered for articleContainerClass=\""+articleContainerClass+"\"!!!"); //$NON-NLS-1$ //$NON-NLS-2$
else
return null;
}
SegmentTypeProductTypeDependentFactory factory = null;
// We iterate first through the segmentType classes and second through
// the productType classes.
Class<?> segmentTypeSearchC = segmentTypeClass;
do {
Class<?> productTypeSearchC = productTypeClass;
do {
Map<String, SegmentTypeProductTypeDependentFactory> aefsByProductTypeClass = aefsBySegmentTypeClass.get(segmentTypeSearchC.getName());
if (aefsByProductTypeClass != null) {
factory = aefsByProductTypeClass.get(productTypeSearchC.getName());
} // if (aefsByProductTypeClass != null) {
productTypeSearchC = productTypeSearchC.getSuperclass();
} while (factory == null && productTypeSearchC != Object.class);
segmentTypeSearchC = segmentTypeSearchC.getSuperclass();
} while (factory == null && segmentTypeSearchC != Object.class);
if (throwExceptionIfNotFound && factory == null)
throw new IllegalStateException("No SegmentTypeProductTypeDependentFactory registered for segmentTypeClass=\""+segmentTypeClass.getName()+"\" & productTypeClass=\""+productTypeClass.getName()+"\" within articleContainerClass=\""+articleContainerClass+"\"!!!"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
return factory;
}
protected void addFactory(SegmentTypeProductTypeDependentFactory factory)
{
Map<String, Map<String, SegmentTypeProductTypeDependentFactory>> map1 = factories.get(factory.getArticleContainerClass());
if (map1 == null) {
map1 = new HashMap<String, Map<String,SegmentTypeProductTypeDependentFactory>>();
factories.put(factory.getArticleContainerClass(), map1);
}
Map<String, SegmentTypeProductTypeDependentFactory> map2 = map1.get(factory.getSegmentTypeClass());
if (map2 == null) {
map2 = new HashMap<String, SegmentTypeProductTypeDependentFactory>();
map1.put(factory.getSegmentTypeClass(), map2);
}
map2.put(factory.getProductTypeClass(), factory);
}
/**
* @see org.nightlabs.base.ui.extensionpoint.AbstractEPProcessor#processElement(IExtension, org.eclipse.core.runtime.IConfigurationElement)
*/
@Override
public void processElement(IExtension extension, IConfigurationElement element)
throws Exception
{
try {
SegmentTypeProductTypeDependentFactory factory = (SegmentTypeProductTypeDependentFactory) element.createExecutableExtension("class"); //$NON-NLS-1$
String segmentTypeClass = element.getAttribute("segmentTypeClass"); //$NON-NLS-1$
String articleContainerClass = element.getAttribute("articleContainerClass"); //$NON-NLS-1$
String productTypeClass = element.getAttribute("productTypeClass"); //$NON-NLS-1$
String factoryName = element.getAttribute("name"); //$NON-NLS-1$
// SegmentEditFactoryRegistry.assertValidArticleContainerClass(articleContainerClass);
if (segmentTypeClass == null || "".equals(segmentTypeClass)) //$NON-NLS-1$
throw new EPProcessorException("segmentTypeClass undefined!"); //$NON-NLS-1$
if (productTypeClass == null || "".equals(productTypeClass)) //$NON-NLS-1$
throw new EPProcessorException("productTypeClass undefined!"); //$NON-NLS-1$
factory.setSegmentTypeClass(segmentTypeClass);
factory.setArticleContainerClass(articleContainerClass);
factory.setProductTypeClass(productTypeClass);
factory.setName(factoryName);
processChildElements(factory, element.getChildren());
addFactory(factory);
} catch (Throwable t) {
throw new EPProcessorException("Extension to "+getExtensionPointID()+" with class "+element.getAttribute("class")+" has errors!", t); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
}
protected void processChildElements(SegmentTypeProductTypeDependentFactory factory, IConfigurationElement[] children)
throws EPProcessorException
{
}
}