| using Lucene.Net.QueryParsers.Flexible.Core; |
| using Lucene.Net.QueryParsers.Flexible.Core.Builders; |
| using Lucene.Net.QueryParsers.Flexible.Core.Messages; |
| using Lucene.Net.QueryParsers.Flexible.Core.Nodes; |
| using Lucene.Net.QueryParsers.Flexible.Messages; |
| using Lucene.Net.QueryParsers.Flexible.Standard.Nodes; |
| using Lucene.Net.QueryParsers.Flexible.Standard.Parser; |
| using Lucene.Net.Search; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.QueryParsers.Flexible.Standard.Builders |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// This builder does the same as the <see cref="BooleanQueryNodeBuilder"/>, but this |
| /// considers if the built <see cref="BooleanQuery"/> should have its coord disabled or |
| /// not. |
| /// </summary> |
| /// <seealso cref="BooleanQueryNodeBuilder"/> |
| /// <seealso cref="BooleanQuery"/> |
| /// <seealso cref="Search.Similarities.Similarity.Coord(int, int)"/> |
| public class StandardBooleanQueryNodeBuilder : IStandardQueryBuilder |
| { |
| public StandardBooleanQueryNodeBuilder() |
| { |
| // empty constructor |
| } |
| |
| public virtual Query Build(IQueryNode queryNode) |
| { |
| StandardBooleanQueryNode booleanNode = (StandardBooleanQueryNode)queryNode; |
| |
| BooleanQuery bQuery = new BooleanQuery(booleanNode.DisableCoord); |
| IList<IQueryNode> children = booleanNode.GetChildren(); |
| |
| if (children != null) |
| { |
| foreach (IQueryNode child in children) |
| { |
| object obj = child.GetTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID); |
| |
| if (obj != null) |
| { |
| Query query = (Query)obj; |
| |
| try |
| { |
| bQuery.Add(query, GetModifierValue(child)); |
| } |
| catch (BooleanQuery.TooManyClausesException ex) |
| { |
| throw new QueryNodeException(new Message( |
| QueryParserMessages.TOO_MANY_BOOLEAN_CLAUSES, BooleanQuery |
| .MaxClauseCount, queryNode |
| .ToQueryString(new EscapeQuerySyntax())), ex); |
| } |
| } |
| } |
| } |
| |
| return bQuery; |
| } |
| |
| private static Occur GetModifierValue(IQueryNode node) |
| { |
| if (node is ModifierQueryNode mNode) |
| { |
| Modifier modifier = mNode.Modifier; |
| |
| if (Modifier.MOD_NONE.Equals(modifier)) |
| { |
| return Occur.SHOULD; |
| } |
| else if (Modifier.MOD_NOT.Equals(modifier)) |
| { |
| return Occur.MUST_NOT; |
| } |
| else |
| { |
| return Occur.MUST; |
| } |
| } |
| |
| return Occur.SHOULD; |
| } |
| } |
| } |