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+/*------------------------------------------------------------------------------
+* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
+*
+* Distributable under the terms of either the Apache License (Version 2.0) or
+* the GNU Lesser General Public License, as specified in the COPYING file.
+------------------------------------------------------------------------------*/
+#ifndef _lucene_search_MultiTermQuery_
+#define _lucene_search_MultiTermQuery_
+
+#if defined(_LUCENE_PRAGMA_ONCE)
+# pragma once
+#endif
+
+#include "CLucene/util/StringBuffer.h"
+#include "CLucene/index/IndexReader.h"
+#include "CLucene/index/Term.h"
+#include "CLucene/index/Terms.h"
+#include "FilteredTermEnum.h"
+#include "SearchHeader.h"
+#include "BooleanQuery.h"
+#include "TermQuery.h"
+
+CL_NS_DEF(search)
+ /**
+ * A {@link Query} that matches documents containing a subset of terms provided
+ * by a {@link FilteredTermEnum} enumeration.
+ * <P>
+ * <code>MultiTermQuery</code> is not designed to be used by itself.
+ * <BR>
+ * The reason being that it is not intialized with a {@link FilteredTermEnum}
+ * enumeration. A {@link FilteredTermEnum} enumeration needs to be provided.
+ * <P>
+ * For example, {@link WildcardQuery} and {@link FuzzyQuery} extend
+ * <code>MultiTermQuery</code> to provide {@link WildcardTermEnum} and
+ * {@link FuzzyTermEnum}, respectively.
+ */
+ class MultiTermQuery: public Query {
+ private:
+ CL_NS(index)::Term* term;
+ protected:
+ MultiTermQuery(const MultiTermQuery& clone);
+
+ /** Construct the enumeration to be used, expanding the pattern term. */
+ virtual FilteredTermEnum* getEnum(CL_NS(index)::IndexReader* reader) = 0;
+ public:
+ /** Constructs a query for terms matching <code>term</code>. */
+ MultiTermQuery(CL_NS(index)::Term* t);
+
+ virtual ~MultiTermQuery();
+
+ /** Returns the pattern term. */
+ CL_NS(index)::Term* getTerm(bool pointer=true) const;
+
+ Query* combine(Query** queries);
+
+ /** Prints a user-readable version of this query. */
+ TCHAR* toString(const TCHAR* field) const;
+
+ Query* rewrite(CL_NS(index)::IndexReader* reader);
+ };
+CL_NS_END
+#endif