+++ /dev/null
-package org.apache.lucene.queryParser.core.nodes;
-
-/**
- * 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.messages.MessageImpl;
-import org.apache.lucene.queryParser.core.QueryNodeError;
-import org.apache.lucene.queryParser.core.messages.QueryParserMessages;
-import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
-
-/**
- * A {@link ModifierQueryNode} indicates the modifier value (+,-,?,NONE) for
- * each term on the query string. For example "+t1 -t2 t3" will have a tree of:
- * <blockquote>
- * <BooleanQueryNode> <ModifierQueryNode modifier="MOD_REQ"> <t1/>
- * </ModifierQueryNode> <ModifierQueryNode modifier="MOD_NOT"> <t2/>
- * </ModifierQueryNode> <t3/> </BooleanQueryNode>
- * </blockquote>
- */
-public class ModifierQueryNode extends QueryNodeImpl {
-
- private static final long serialVersionUID = -391209837953928169L;
-
- public enum Modifier {
- MOD_NONE, MOD_NOT, MOD_REQ;
-
- @Override
- public String toString() {
- switch (this) {
- case MOD_NONE:
- return "MOD_NONE";
- case MOD_NOT:
- return "MOD_NOT";
- case MOD_REQ:
- return "MOD_REQ";
- }
- // this code is never executed
- return "MOD_DEFAULT";
- }
-
- public String toDigitString() {
- switch (this) {
- case MOD_NONE:
- return "";
- case MOD_NOT:
- return "-";
- case MOD_REQ:
- return "+";
- }
- // this code is never executed
- return "";
- }
-
- public String toLargeString() {
- switch (this) {
- case MOD_NONE:
- return "";
- case MOD_NOT:
- return "NOT ";
- case MOD_REQ:
- return "+";
- }
- // this code is never executed
- return "";
- }
- }
-
- private Modifier modifier = Modifier.MOD_NONE;
-
- /**
- * Used to store the modifier value on the original query string
- *
- * @param query
- * - QueryNode subtree
- * @param mod
- * - Modifier Value
- */
- public ModifierQueryNode(QueryNode query, Modifier mod) {
- if (query == null) {
- throw new QueryNodeError(new MessageImpl(
- QueryParserMessages.PARAMETER_VALUE_NOT_SUPPORTED, "query", "null"));
- }
-
- allocate();
- setLeaf(false);
- add(query);
- this.modifier = mod;
- }
-
- public QueryNode getChild() {
- return getChildren().get(0);
- }
-
- public Modifier getModifier() {
- return this.modifier;
- }
-
- @Override
- public String toString() {
- return "<modifier operation='" + this.modifier.toString() + "'>" + "\n"
- + getChild().toString() + "\n</modifier>";
- }
-
- public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
- if (getChild() == null)
- return "";
-
- String leftParenthensis = "";
- String rightParenthensis = "";
-
- if (getChild() != null && getChild() instanceof ModifierQueryNode) {
- leftParenthensis = "(";
- rightParenthensis = ")";
- }
-
- if (getChild() instanceof BooleanQueryNode) {
- return this.modifier.toLargeString() + leftParenthensis
- + getChild().toQueryString(escapeSyntaxParser) + rightParenthensis;
- } else {
- return this.modifier.toDigitString() + leftParenthensis
- + getChild().toQueryString(escapeSyntaxParser) + rightParenthensis;
- }
- }
-
- @Override
- public QueryNode cloneTree() throws CloneNotSupportedException {
- ModifierQueryNode clone = (ModifierQueryNode) super.cloneTree();
-
- clone.modifier = this.modifier;
-
- return clone;
- }
-
- /**
- * @param child
- */
- public void setChild(QueryNode child) {
- List<QueryNode> list = new ArrayList<QueryNode>();
- list.add(child);
- this.set(list);
- }
-
-}