AqpQProcessorPost.java

package org.apache.lucene.queryparser.flexible.aqp.processors;

import org.apache.lucene.queryparser.flexible.core.QueryNodeException;
import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode;
import org.apache.lucene.queryparser.flexible.aqp.nodes.AqpANTLRNode;

/**
 * The class that is used for ANTLR query nodes, it is the same as
 * {@link AqpQPHRASEProcessor}, the only difference is that it works in
 * postProcessor phase (instead of pre-process phase)
 * 
 * 
 */

public class AqpQProcessorPost extends AqpQProcessor {

  @Override
  protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
    if (node instanceof AqpANTLRNode) {
      AqpANTLRNode n = (AqpANTLRNode) node;
      if (nodeIsWanted(n)) {
        return createQNode(n);
      }
    }
    return node;
  }

  @Override
  protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
    return node;
  }

  @Override
  public boolean nodeIsWanted(AqpANTLRNode node) {
    throw new UnsupportedOperationException();
  }

  @Override
  public QueryNode createQNode(AqpANTLRNode node) throws QueryNodeException {
    throw new UnsupportedOperationException();
  }
}