| using Lucene.Net.QueryParsers.Flexible.Core.Builders; |
| using Lucene.Net.QueryParsers.Flexible.Core.Nodes; |
| using Lucene.Net.QueryParsers.Flexible.Standard.Builders; |
| using Lucene.Net.Search; |
| using Lucene.Net.Search.Spans; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.QueryParsers.Flexible.Spans |
| { |
| /* |
| * 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 creates <see cref="SpanOrQuery"/>s from a <see cref="BooleanQueryNode"/>. |
| /// <para/> |
| /// It assumes that the <see cref="BooleanQueryNode"/> instance has at least one child. |
| /// </summary> |
| public class SpanOrQueryNodeBuilder : IStandardQueryBuilder |
| { |
| public virtual Query Build(IQueryNode node) |
| { |
| // validates node |
| BooleanQueryNode booleanNode = (BooleanQueryNode)node; |
| |
| IList<IQueryNode> children = booleanNode.GetChildren(); |
| SpanQuery[] |
| spanQueries = new SpanQuery[children.size()]; |
| |
| int i = 0; |
| foreach (IQueryNode child in children) |
| { |
| spanQueries[i++] = (SpanQuery)child |
| .GetTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID); |
| } |
| |
| return new SpanOrQuery(spanQueries); |
| } |
| } |
| } |