01: package org.apache.lucene.queryParser.surround.query;
02:
03: /**
04: * Licensed to the Apache Software Foundation (ASF) under one or more
05: * contributor license agreements. See the NOTICE file distributed with
06: * this work for additional information regarding copyright ownership.
07: * The ASF licenses this file to You under the Apache License, Version 2.0
08: * (the "License"); you may not use this file except in compliance with
09: * the License. You may obtain a copy of the License at
10: *
11: * http://www.apache.org/licenses/LICENSE-2.0
12: *
13: * Unless required by applicable law or agreed to in writing, software
14: * distributed under the License is distributed on an "AS IS" BASIS,
15: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16: * See the License for the specific language governing permissions and
17: * limitations under the License.
18: */
19:
20: import java.io.IOException;
21:
22: public interface DistanceSubQuery {
23: /** When distanceSubQueryNotAllowed() returns non null, the reason why the subquery
24: * is not allowed as a distance subquery is returned.
25: * <br>When distanceSubQueryNotAllowed() returns null addSpanNearQueries() can be used
26: * in the creation of the span near clause for the subquery.
27: */
28: String distanceSubQueryNotAllowed();
29:
30: void addSpanQueries(SpanNearClauseFactory sncf) throws IOException;
31: }
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