1 package org.apache.lucene.queryParser.standard.processors;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
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7 * The ASF licenses this file to You under the Apache License, Version 2.0
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20 import java.util.List;
22 import org.apache.lucene.queryParser.core.QueryNodeException;
23 import org.apache.lucene.queryParser.core.nodes.FieldQueryNode;
24 import org.apache.lucene.queryParser.core.nodes.MatchAllDocsQueryNode;
25 import org.apache.lucene.queryParser.core.nodes.QueryNode;
26 import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
27 import org.apache.lucene.queryParser.standard.nodes.WildcardQueryNode;
28 import org.apache.lucene.search.MatchAllDocsQuery;
31 * This processor converts every {@link WildcardQueryNode} that is "*:*" to
32 * {@link MatchAllDocsQueryNode}.
34 * @see MatchAllDocsQueryNode
35 * @see MatchAllDocsQuery
37 public class MatchAllDocsQueryNodeProcessor extends QueryNodeProcessorImpl {
39 public MatchAllDocsQueryNodeProcessor() {
44 protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
46 if (node instanceof FieldQueryNode) {
47 FieldQueryNode fqn = (FieldQueryNode) node;
49 if (fqn.getField().toString().equals("*")
50 && fqn.getText().toString().equals("*")) {
52 return new MatchAllDocsQueryNode();
63 protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
70 protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
71 throws QueryNodeException {