/*
 * Copyright 2004 The Apache Software Foundation
 * 
 * Licensed 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.
 */
using System;
using IndexReader = Lucene.Net.Index.IndexReader;
using Term = Lucene.Net.Index.Term;
namespace Lucene.Net.Search
{
	
	/// <summary>Implements the wildcard search query. Supported wildcards are <code>*</code>, which
	/// matches any character sequence (including the empty one), and <code>?</code>,
	/// which matches any single character. Note this query can be slow, as it
	/// needs to iterate over all terms. In order to prevent extremely slow WildcardQueries,
	/// a Wildcard term must not start with one of the wildcards <code>*</code> or
	/// <code>?</code>.
	/// 
	/// </summary>
	/// <seealso cref="WildcardTermEnum">
	/// </seealso>
	[Serializable]
	public class WildcardQuery:MultiTermQuery
	{
		public WildcardQuery(Term term):base(term)
		{
		}
		
		protected internal override FilteredTermEnum GetEnum(IndexReader reader)
		{
			return new WildcardTermEnum(reader, GetTerm());
		}
	}
}