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1528
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1 package luan.modules.lucene;
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2
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3 import java.util.Map;
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4 import java.util.Collections;
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5 import org.apache.lucene.index.IndexWriterConfig;
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6 import org.apache.lucene.index.SnapshotDeletionPolicy;
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7 import org.apache.lucene.util.Version;
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8 import goodjava.lucene.queryparser.MultiFieldParser;
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9 import goodjava.lucene.api.MultiFieldParserConfig;
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10 import goodjava.lucene.api.MoreFieldInfo;
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11 import luan.LuanFunction;
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12 import luan.LuanTable;
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13 import luan.LuanCloner;
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14 import luan.LuanException;
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15 import luan.LuanRuntimeException;
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16
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17
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18 final class SupplementingConfig extends MultiFieldParserConfig {
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19 private final LuanFunction supplementer;
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20
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21 SupplementingConfig(Version luceneVersion,MultiFieldParser mfp,LuanFunction supplementer) {
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22 super(luceneVersion,mfp);
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23 LuanCloner cloner = new LuanCloner(LuanCloner.Type.COMPLETE);
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24 this.supplementer = (LuanFunction)cloner.get(supplementer);
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25 }
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26
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27 public IndexWriterConfig newLuceneConfig() {
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28 IndexWriterConfig luceneConfig = super.newLuceneConfig();
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29 SnapshotDeletionPolicy snapshotDeletionPolicy = new SnapshotDeletionPolicy(luceneConfig.getIndexDeletionPolicy());
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30 luceneConfig.setIndexDeletionPolicy(snapshotDeletionPolicy);
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31 return luceneConfig;
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32 }
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33
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34 public MoreFieldInfo getMoreFieldInfo(Map<String,Object> storedFields) {
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35 if( supplementer == null )
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36 return super.getMoreFieldInfo(storedFields);
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37 try {
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38 LuanTable tbl = LuceneIndex.toTable(supplementer.luan(),storedFields);
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39 tbl = (LuanTable)supplementer.call(tbl);
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40 if( tbl == null ) {
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41 return super.getMoreFieldInfo(storedFields);
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42 } else {
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43 return new MoreFieldInfo(LuceneIndex.toLucene(tbl),Collections.emptyMap());
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44 }
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45 } catch(LuanException e) {
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46 throw new LuanRuntimeException(e);
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47 }
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48 }
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49 }
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