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/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package org.neo4j.kernel.api.impl.fulltext;
import org.apache.lucene.analysis.Analyzer;
import org.neo4j.configuration.Config;
import org.neo4j.dbms.database.readonly.DatabaseReadOnlyChecker;
import org.neo4j.internal.schema.IndexDescriptor;
import org.neo4j.kernel.api.impl.index.DatabaseIndex;
import org.neo4j.kernel.api.impl.index.IndexWriterConfigBuilder;
import org.neo4j.kernel.api.impl.index.IndexWriterConfigModes;
import org.neo4j.kernel.api.impl.index.IndexWriterConfigModes.FulltextModes;
import org.neo4j.kernel.api.impl.index.builder.AbstractLuceneIndexBuilder;
import org.neo4j.kernel.api.impl.index.partition.WritableIndexPartitionFactory;
import org.neo4j.token.api.TokenHolder;
public class FulltextIndexBuilder extends AbstractLuceneIndexBuilder {
private final IndexDescriptor descriptor;
private final TokenHolder propertyKeyTokenHolder;
private final Analyzer analyzer;
private final String[] propertyNames;
private boolean populating;
private IndexUpdateSink indexUpdateSink = NullIndexUpdateSink.INSTANCE;
private final Config config;
private FulltextIndexBuilder(
IndexDescriptor descriptor,
Config config,
DatabaseReadOnlyChecker readOnlyChecker,
TokenHolder propertyKeyTokenHolder,
Analyzer analyzer,
String[] propertyNames) {
super(readOnlyChecker);
this.config = config;
this.descriptor = descriptor;
this.analyzer = analyzer;
this.propertyNames = propertyNames;
this.propertyKeyTokenHolder = propertyKeyTokenHolder;
}
/**
* Create new lucene fulltext index builder.
*
* @param descriptor The descriptor for this index
* @param propertyKeyTokenHolder A token holder used to look up property key token names by id.
* @return new FulltextIndexBuilder
*/
public static FulltextIndexBuilder create(
IndexDescriptor descriptor,
Config config,
DatabaseReadOnlyChecker readOnlyChecker,
TokenHolder propertyKeyTokenHolder,
Analyzer analyzer,
String[] propertyNames) {
return new FulltextIndexBuilder(
descriptor, config, readOnlyChecker, propertyKeyTokenHolder, analyzer, propertyNames);
}
/**
* Whether to create the index in a {@link IndexWriterConfigModes.FulltextModes#POPULATION populating} mode,
* if {@code true}, or in a {@link IndexWriterConfigModes.FulltextModes#STANDARD standard} mode, if {@code false}.
*
* @param isPopulating {@code true} if the index should be created in a populating mode.
* @return this index builder.
*/
FulltextIndexBuilder withPopulatingMode(boolean isPopulating) {
this.populating = isPopulating;
return this;
}
FulltextIndexBuilder withIndexUpdateSink(IndexUpdateSink indexUpdateSink) {
this.indexUpdateSink = indexUpdateSink;
return this;
}
/**
* Build lucene schema index with specified configuration
*
* @return lucene schema index
*/
public DatabaseIndex build() {
IndexWriterConfigBuilder writerConfigBuilder = populating
? new IndexWriterConfigBuilder(FulltextModes.POPULATION, config).withAnalyzer(analyzer)
: new IndexWriterConfigBuilder(FulltextModes.STANDARD, config).withAnalyzer(analyzer);
WritableIndexPartitionFactory partitionFactory = new WritableIndexPartitionFactory(writerConfigBuilder::build);
FulltextIndex fulltextIndex = new FulltextIndex(
storageBuilder.build(),
partitionFactory,
descriptor,
propertyKeyTokenHolder,
config,
analyzer,
propertyNames);
return new WritableFulltextDatabaseIndex(indexUpdateSink, fulltextIndex, readOnlyChecker, permanentlyReadOnly);
}
}
