01: /*
02: * Copyright 2002-2005 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package info.jtrac.lucene;
18:
19: import org.apache.lucene.document.Document;
20: import org.springmodules.lucene.search.core.HitExtractor;
21:
22: /**
23: * Uses Spring Modules Lucene support
24: * converts a search "hit" into an Item id, which we
25: * can later use to load the actual object
26: */
27: public class ItemIdHitExtractor implements HitExtractor {
28:
29: public Long mapHit(int i, Document document, float f) {
30: String type = document.get("type");
31: if (type == null) {
32: return null;
33: }
34: if (type.equals("item")) {
35: String id = document.get("id");
36: return new Long(id);
37: } else if (type.equals("history")) {
38: String itemId = document.get("itemId");
39: return new Long(itemId);
40: } else {
41: throw new RuntimeException(
42: "Unexpected lucene search result: " + document);
43: }
44: }
45:
46: }
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