/*
* Ivory: A Hadoop toolkit for web-scale information retrieval
*
* Licensed under the Apache License, Version 2.0 (the "License"); you
* may not use this file except in compliance with the License. You may
* obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package ivory.cascade.model.builder;
import ivory.core.ConfigurationException;
import ivory.core.RetrievalEnvironment;
import ivory.core.util.XMLTools;
import ivory.smrf.model.Clique;
import org.w3c.dom.Node;
import com.google.common.base.Preconditions;
/**
* @author Don Metzler
* @author Lidan Wang
*/
public class CascadeUnorderedCliqueSet extends CascadeCliqueSet {
@Override
public void configure(RetrievalEnvironment env, String[] queryTerms, Node domNode,
int cascadeStage, String pruner_and_params) throws ConfigurationException {
Preconditions.checkNotNull(env);
Preconditions.checkNotNull(queryTerms);
Preconditions.checkNotNull(domNode);
String dependenceType = XMLTools.getAttributeValue(domNode, "dependence", "sequential");
boolean docDependent = XMLTools.getAttributeValue(domNode, "docDependent", true);
// Initialize clique set.
clearCliques();
if (dependenceType.equals("sequential")) {
throw new ConfigurationException(
"Unsupported operation: there are no unordered cliques within a sequentially dependent graph.");
} else if (dependenceType.equals("full")) {
addCliques(CascadeCliqueFactory.getFullDependenceCliques(env, queryTerms, domNode, false,
docDependent, cascadeStage, pruner_and_params));
} else {
throw new ConfigurationException("Unrecognized UnorderedCliqueSet type: " + dependenceType);
}
}
@Override
public Clique.Type getType() {
return Clique.Type.Unordered;
}
}