/*
* Copyright 2012 - 2014 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.solr.repository.support;
import static org.springframework.data.querydsl.QueryDslUtils.*;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import org.apache.solr.client.solrj.SolrServer;
import org.springframework.data.querydsl.QueryDslPredicateExecutor;
import org.springframework.data.repository.core.NamedQueries;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;
import org.springframework.data.repository.query.QueryLookupStrategy;
import org.springframework.data.repository.query.QueryLookupStrategy.Key;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.data.solr.core.SolrOperations;
import org.springframework.data.solr.core.SolrTemplate;
import org.springframework.data.solr.core.schema.SolrPersistentEntitySchemaCreator.Feature;
import org.springframework.data.solr.repository.SolrRepository;
import org.springframework.data.solr.repository.query.PartTreeSolrQuery;
import org.springframework.data.solr.repository.query.SolrEntityInformation;
import org.springframework.data.solr.repository.query.SolrEntityInformationCreator;
import org.springframework.data.solr.repository.query.SolrQueryMethod;
import org.springframework.data.solr.repository.query.StringBasedSolrQuery;
import org.springframework.data.solr.server.SolrServerFactory;
import org.springframework.data.solr.server.support.MulticoreSolrServerFactory;
import org.springframework.data.solr.server.support.SolrServerUtils;
import org.springframework.util.Assert;
/**
* Factory to create {@link SolrRepository}
*
* @author Christoph Strobl
*/
public class SolrRepositoryFactory extends RepositoryFactorySupport {
private SolrOperations solrOperations;
private final SolrEntityInformationCreator entityInformationCreator;
private SolrServerFactory factory;
private SolrTemplateHolder templateHolder = new SolrTemplateHolder();
private boolean schemaCreationSupport;
public SolrRepositoryFactory(SolrOperations solrOperations) {
Assert.notNull(solrOperations);
if (solrOperations instanceof SolrTemplate) {
addSchemaCreationFeaturesIfEnabled((SolrTemplate) solrOperations);
}
this.solrOperations = solrOperations;
this.entityInformationCreator = new SolrEntityInformationCreatorImpl(solrOperations.getConverter()
.getMappingContext());
}
public SolrRepositoryFactory(SolrServer solrServer) {
Assert.notNull(solrServer);
this.solrOperations = createTemplate(solrServer);
factory = new MulticoreSolrServerFactory(solrServer);
this.entityInformationCreator = new SolrEntityInformationCreatorImpl(this.solrOperations.getConverter()
.getMappingContext());
}
private SolrTemplate createTemplate(SolrServer solrServer) {
SolrTemplate template = new SolrTemplate(solrServer);
addSchemaCreationFeaturesIfEnabled(template);
template.afterPropertiesSet();
return template;
}
@Override
public <T, ID extends Serializable> SolrEntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {
return entityInformationCreator.getEntityInformation(domainClass);
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
protected Object getTargetRepository(RepositoryMetadata metadata) {
SolrOperations operations = this.solrOperations;
if (factory != null) {
SolrTemplate template = new SolrTemplate(factory);
if (this.solrOperations.getConverter() != null) {
template.setMappingContext(this.solrOperations.getConverter().getMappingContext());
}
template.setSolrCore(SolrServerUtils.resolveSolrCoreName(metadata.getDomainType()));
addSchemaCreationFeaturesIfEnabled(template);
template.afterPropertiesSet();
operations = template;
}
SimpleSolrRepository repository = new SimpleSolrRepository(getEntityInformation(metadata.getDomainType()),
operations);
repository.setEntityClass(metadata.getDomainType());
this.templateHolder.add(metadata.getDomainType(), operations);
return repository;
}
private void addSchemaCreationFeaturesIfEnabled(SolrTemplate template) {
if (isSchemaCreationSupport()) {
template.setSchemaCreationFeatures(Collections.singletonList(Feature.CREATE_MISSING_FIELDS));
}
}
@Override
protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
if (isQueryDslRepository(metadata.getRepositoryInterface())) {
throw new IllegalArgumentException("QueryDsl Support has not been implemented yet.");
}
return SimpleSolrRepository.class;
}
private static boolean isQueryDslRepository(Class<?> repositoryInterface) {
return QUERY_DSL_PRESENT && QueryDslPredicateExecutor.class.isAssignableFrom(repositoryInterface);
}
@Override
protected QueryLookupStrategy getQueryLookupStrategy(Key key) {
return new SolrQueryLookupStrategy();
}
/**
* @return
* @since 1.3
*/
public boolean isSchemaCreationSupport() {
return schemaCreationSupport;
}
/**
* @param schemaCreationSupport
* @since 1.3
*/
public void setSchemaCreationSupport(boolean schemaCreationSupport) {
this.schemaCreationSupport = schemaCreationSupport;
}
private class SolrQueryLookupStrategy implements QueryLookupStrategy {
@Override
public RepositoryQuery resolveQuery(Method method, RepositoryMetadata metadata, NamedQueries namedQueries) {
SolrQueryMethod queryMethod = new SolrQueryMethod(method, metadata, entityInformationCreator);
String namedQueryName = queryMethod.getNamedQueryName();
SolrOperations solrOperations = selectSolrOperations(metadata);
if (namedQueries.hasQuery(namedQueryName)) {
String namedQuery = namedQueries.getQuery(namedQueryName);
return new StringBasedSolrQuery(namedQuery, queryMethod, solrOperations);
} else if (queryMethod.hasAnnotatedQuery()) {
return new StringBasedSolrQuery(queryMethod, solrOperations);
} else {
return new PartTreeSolrQuery(queryMethod, solrOperations);
}
}
private SolrOperations selectSolrOperations(RepositoryMetadata metadata) {
SolrOperations ops = templateHolder.getSolrOperations(metadata.getDomainType());
if (ops == null) {
ops = solrOperations;
}
return ops;
}
}
private static class SolrTemplateHolder {
private Map<Class<?>, SolrOperations> operationsMap = new WeakHashMap<Class<?>, SolrOperations>();
void add(Class<?> domainType, SolrOperations repository) {
operationsMap.put(domainType, repository);
}
SolrOperations getSolrOperations(Class<?> type) {
return operationsMap.get(type);
}
}
}