/*
* Copyright 2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.springframework.data.gemfire.search.lucene;
import java.util.Collection;
import java.util.List;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.lucene.LuceneIndex;
import org.apache.geode.cache.lucene.LuceneQuery;
import org.apache.geode.cache.lucene.LuceneQueryFactory;
import org.apache.geode.cache.lucene.LuceneQueryProvider;
import org.apache.geode.cache.lucene.LuceneResultStruct;
import org.apache.geode.cache.lucene.PageableLuceneQueryResults;
import org.springframework.data.gemfire.search.lucene.support.LuceneAccessorSupport;
/**
* {@link LuceneTemplate} is a Lucene data access operations class encapsulating functionality
* for performing Lucene queries and other Lucene data access operations.
*
* @author John Blum
* @see org.springframework.data.gemfire.search.lucene.LuceneAccessor
* @see org.springframework.data.gemfire.search.lucene.LuceneOperations
* @see org.apache.geode.cache.Region
* @see org.apache.geode.cache.lucene.LuceneIndex
* @see org.apache.geode.cache.lucene.LuceneQuery
* @see org.apache.geode.cache.lucene.LuceneQueryFactory
* @see org.apache.geode.cache.lucene.LuceneQueryProvider
* @see org.apache.geode.cache.lucene.LuceneResultStruct
* @see org.apache.geode.cache.lucene.PageableLuceneQueryResults
* @since 1.1.0
*/
@SuppressWarnings("unused")
public class LuceneTemplate extends LuceneAccessorSupport implements LuceneOperations {
/**
* Constructs an uninitialized instance of {@link LuceneTemplate}.
*/
public LuceneTemplate() {
}
/**
* Constructs an instance of {@link LuceneTemplate} initialized with the given {@link LuceneIndex}.
*
* @param luceneIndex {@link LuceneIndex} used in Lucene queries.
* @see org.apache.geode.cache.lucene.LuceneIndex
*/
public LuceneTemplate(LuceneIndex luceneIndex) {
super(luceneIndex);
}
/**
* Constructs an instance of {@link LuceneTemplate} initialized with the given Lucene {@link String index name}
* and {@link Region}.
*
* @param indexName {@link String} containing the name of the {@link LuceneIndex}.
* @param region {@link Region} on which the Lucene query is executed.
* @see org.apache.geode.cache.Region
*/
public LuceneTemplate(String indexName, Region<?, ?> region) {
super(indexName, region);
}
/**
* Constructs an instance of {@link LuceneTemplate} initialized with the given Lucene {@link String index name}
* and {@link String fully-qualified Region path}.
*
* @param indexName {@link String} containing the name of the {@link LuceneIndex}.
* @param regionPath {@link String} containing the fully-qualified path of the {@link Region}.
*/
public LuceneTemplate(String indexName, String regionPath) {
super(indexName, regionPath);
}
/**
* @inheritDoc
*/
@Override
public <K, V> List<LuceneResultStruct<K, V>> query(String query, String defaultField,
int resultLimit, String... projectionFields) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit, projectionFields);
LuceneQuery<K, V> queryWrapper = queryFactory.create(indexName, regionPath, query, defaultField);
return doFind(queryWrapper::findResults, query, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <K, V> PageableLuceneQueryResults<K, V> query(String query, String defaultField,
int resultLimit, int pageSize, String... projectionFields) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit, pageSize, projectionFields);
LuceneQuery<K, V> queryWrapper = queryFactory.create(indexName, regionPath, query, defaultField);
return doFind(queryWrapper::findPages, query, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <K, V> List<LuceneResultStruct<K, V>> query(LuceneQueryProvider queryProvider,
int resultLimit, String... projectionFields) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit, projectionFields);
LuceneQuery<K, V> queryWrapper = queryFactory.create(indexName, regionPath, queryProvider);
return doFind(queryWrapper::findResults, queryProvider, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <K, V> PageableLuceneQueryResults<K, V> query(LuceneQueryProvider queryProvider,
int resultLimit, int pageSize, String... projectionFields) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit, pageSize, projectionFields);
LuceneQuery<K, V> queryWrapper = queryFactory.create(indexName, regionPath, queryProvider);
return doFind(queryWrapper::findPages, queryProvider, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <K> Collection<K> queryForKeys(String query, String defaultField, int resultLimit) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit);
LuceneQuery<K, ?> queryWrapper = queryFactory.create(indexName, regionPath, query, defaultField);
return doFind(queryWrapper::findKeys, query, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <K> Collection<K> queryForKeys(LuceneQueryProvider queryProvider, int resultLimit) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit);
LuceneQuery<K, ?> queryWrapper = queryFactory.create(indexName, regionPath, queryProvider);
return doFind(queryWrapper::findKeys, queryProvider, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <V> Collection<V> queryForValues(String query, String defaultField, int resultLimit) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit);
LuceneQuery<?, V> queryWrapper = queryFactory.create(indexName, regionPath, query, defaultField);
return doFind(queryWrapper::findValues, query, regionPath, indexName);
}
/**
* @inheritDoc
*/
@Override
public <V> Collection<V> queryForValues(LuceneQueryProvider queryProvider, int resultLimit) {
String indexName = resolveIndexName();
String regionPath = resolveRegionPath();
LuceneQueryFactory queryFactory = createLuceneQueryFactory(resultLimit);
LuceneQuery<?, V> queryWrapper = queryFactory.create(indexName, regionPath, queryProvider);
return doFind(queryWrapper::findValues, queryProvider, regionPath, indexName);
}
}