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DeletedQueryNode.cs
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DeletedQueryNode.cs
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using Lucene.Net.QueryParsers.Flexible.Core.Parser;
namespace Lucene.Net.QueryParsers.Flexible.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.
*/
/// <summary>
/// A <see cref="DeletedQueryNode"/> represents a node that was deleted from the query
/// node tree. It can be removed from the tree using the
/// <see cref="Processors.RemoveDeletedQueryNodesProcessor"/> processor.
/// </summary>
public class DeletedQueryNode : QueryNode
{
public DeletedQueryNode()
{
// empty constructor
}
public override string ToQueryString(IEscapeQuerySyntax escaper)
{
return "[DELETEDCHILD]";
}
public override string ToString()
{
return "<deleted/>";
}
public override IQueryNode CloneTree()
{
DeletedQueryNode clone = (DeletedQueryNode)base.CloneTree();
return clone;
}
}
}