package org.drools.spring.factory;
/*
* Copyright 2005 (C) The Werken Company. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 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 name "drools" must not be used to endorse or promote products derived
* from this Software without prior written permission of The Werken Company.
* For written permission, please contact bob@werken.com.
*
* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a registered trademark of The Werken Company.
*
* 5. Due credit should be given to The Werken Company.
* (http://drools.werken.com/).
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``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 WERKEN COMPANY 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.
*
*/
import java.util.Iterator;
import java.util.List;
import org.drools.conflict.CompositeConflictResolver;
import org.drools.spi.ConflictResolver;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
public class ConflictResolverFactoryBean implements FactoryBean, InitializingBean {
private List resolverStrategies;
private CompositeConflictResolver resolver;
public void setResolverStrategies(List resolverStrategies) {
this.resolverStrategies = resolverStrategies;
}
public void afterPropertiesSet() throws Exception {
if (resolverStrategies == null || resolverStrategies.isEmpty()) {
throw new IllegalArgumentException("resolverStrategies property not specified or is empty");
}
for (Iterator iter = resolverStrategies.iterator(); iter.hasNext();) {
Object object = iter.next();
if (!(object instanceof ConflictResolver)) {
throw new IllegalArgumentException("resolverStrategies item not instanceof ConflictResolver: " + object.getClass());
}
}
}
private CompositeConflictResolver createObject() {
ConflictResolver[] resolvers = (ConflictResolver[]) resolverStrategies.toArray(new ConflictResolver[resolverStrategies.size()]);
return new CompositeConflictResolver(resolvers);
}
public Class getObjectType() {
return ConflictResolver.class;
}
public boolean isSingleton() {
return true;
}
public Object getObject() throws Exception {
if (resolver == null) {
resolver = createObject();
}
return resolver;
}
}