pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / queryparser / src / java / org / apache / lucene / queryParser / precedence / processors / BooleanModifiersQueryNodeProcessor.java

diff --git a/lucene-java-3.4.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/precedence/processors/BooleanModifiersQueryNodeProcessor.java b/lucene-java-3.4.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/precedence/processors/BooleanModifiersQueryNodeProcessor.java
deleted file mode 100644 (file)
index 0a31fb6..0000000
--- a/lucene-java-3.4.0/lucene/contrib/queryparser/src/java/org/apache/lucene/queryParser/precedence/processors/BooleanModifiersQueryNodeProcessor.java
+++ /dev/null
@@ -1,139 +0,0 @@
-package org.apache.lucene.queryParser.precedence.processors;
-
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.
- */
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.apache.lucene.queryParser.core.QueryNodeException;
-import org.apache.lucene.queryParser.core.nodes.AndQueryNode;
-import org.apache.lucene.queryParser.core.nodes.BooleanQueryNode;
-import org.apache.lucene.queryParser.core.nodes.ModifierQueryNode;
-import org.apache.lucene.queryParser.core.nodes.OrQueryNode;
-import org.apache.lucene.queryParser.core.nodes.QueryNode;
-import org.apache.lucene.queryParser.core.nodes.ModifierQueryNode.Modifier;
-import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl;
-import org.apache.lucene.queryParser.precedence.PrecedenceQueryParser;
-import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler;
-import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler.ConfigurationKeys;
-import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler.Operator;
-
-/**
- * <p>
- * This processor is used to apply the correct {@link ModifierQueryNode} to {@link BooleanQueryNode}s children.
- * </p>
- * <p>
- * It walks through the query node tree looking for {@link BooleanQueryNode}s. If an {@link AndQueryNode} is found,
- * every child, which is not a {@link ModifierQueryNode} or the {@link ModifierQueryNode} 
- * is {@link Modifier#MOD_NONE}, becomes a {@link Modifier#MOD_REQ}. For any other
- * {@link BooleanQueryNode} which is not an {@link OrQueryNode}, it checks the default operator is {@link Operator#AND},
- * if it is, the same operation when an {@link AndQueryNode} is found is applied to it.
- * </p>
- * 
- * @see ConfigurationKeys#DEFAULT_OPERATOR
- * @see PrecedenceQueryParser#setDefaultOperator
- */
-public class BooleanModifiersQueryNodeProcessor extends QueryNodeProcessorImpl {
-
-  private ArrayList<QueryNode> childrenBuffer = new ArrayList<QueryNode>();
-
-  private Boolean usingAnd = false;
-
-  public BooleanModifiersQueryNodeProcessor() {
-    // empty constructor
-  }
-
-  @Override
-  public QueryNode process(QueryNode queryTree) throws QueryNodeException {
-    Operator op = getQueryConfigHandler().get(ConfigurationKeys.DEFAULT_OPERATOR);
-    
-    if (op == null) {
-      throw new IllegalArgumentException(
-          "StandardQueryConfigHandler.ConfigurationKeys.DEFAULT_OPERATOR should be set on the QueryConfigHandler");
-    }
-
-    this.usingAnd = StandardQueryConfigHandler.Operator.AND == op;
-
-    return super.process(queryTree);
-
-  }
-
-  @Override
-  protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
-
-    if (node instanceof AndQueryNode) {
-      this.childrenBuffer.clear();
-      List<QueryNode> children = node.getChildren();
-
-      for (QueryNode child : children) {
-        this.childrenBuffer.add(applyModifier(child, Modifier.MOD_REQ));
-      }
-
-      node.set(this.childrenBuffer);
-
-    } else if (this.usingAnd && node instanceof BooleanQueryNode
-        && !(node instanceof OrQueryNode)) {
-
-      this.childrenBuffer.clear();
-      List<QueryNode> children = node.getChildren();
-
-      for (QueryNode child : children) {
-        this.childrenBuffer.add(applyModifier(child, Modifier.MOD_REQ));
-      }
-
-      node.set(this.childrenBuffer);
-
-    }
-
-    return node;
-
-  }
-
-  private QueryNode applyModifier(QueryNode node, Modifier mod) {
-
-    // check if modifier is not already defined and is default
-    if (!(node instanceof ModifierQueryNode)) {
-      return new ModifierQueryNode(node, mod);
-
-    } else {
-      ModifierQueryNode modNode = (ModifierQueryNode) node;
-
-      if (modNode.getModifier() == Modifier.MOD_NONE) {
-        return new ModifierQueryNode(modNode.getChild(), mod);
-      }
-
-    }
-
-    return node;
-
-  }
-
-  @Override
-  protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException {
-    return node;
-  }
-
-  @Override
-  protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
-      throws QueryNodeException {
-
-    return children;
-
-  }
-
-}