com.frank.search.solr.repository.support.SolrRepositoryFactory.java Source code

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Here is the source code for com.frank.search.solr.repository.support.SolrRepositoryFactory.java

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/*
 * Copyright 2012 - 2015 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 com.frank.search.solr.repository.support;

import com.frank.search.solr.core.SolrOperations;
import com.frank.search.solr.repository.query.*;
import com.frank.search.solr.core.SolrTemplate;
import com.frank.search.solr.server.SolrClientFactory;
import com.frank.search.solr.server.support.MulticoreSolrClientFactory;
import org.apache.solr.client.solrj.SolrClient;
import org.springframework.data.querydsl.QueryDslPredicateExecutor;
import org.springframework.data.repository.core.NamedQueries;
import org.springframework.data.repository.core.RepositoryInformation;
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 com.frank.search.solr.core.schema.SolrPersistentEntitySchemaCreator.Feature;
import com.frank.search.solr.repository.SolrRepository;
import com.frank.search.solr.server.support.SolrClientUtils;
import org.springframework.util.Assert;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;

import static org.springframework.data.querydsl.QueryDslUtils.QUERY_DSL_PRESENT;

/**
 * Factory to create {@link SolrRepository}
 * 
 * @author Christoph Strobl
 */
public class SolrRepositoryFactory extends RepositoryFactorySupport {

    private SolrOperations solrOperations;
    private final SolrEntityInformationCreator entityInformationCreator;
    private SolrClientFactory 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(SolrClient solrClient) {
        Assert.notNull(solrClient);

        this.solrOperations = createTemplate(solrClient);

        factory = new MulticoreSolrClientFactory(solrClient);
        this.entityInformationCreator = new SolrEntityInformationCreatorImpl(
                this.solrOperations.getConverter().getMappingContext());

    }

    private SolrTemplate createTemplate(SolrClient solrClient) {

        SolrTemplate template = new SolrTemplate(solrClient);
        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(RepositoryInformation 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(SolrClientUtils.resolveSolrCoreName(metadata.getDomainType()));
            addSchemaCreationFeaturesIfEnabled(template);
            template.afterPropertiesSet();
            operations = template;
        }

        SimpleSolrRepository repository = getTargetRepositoryViaReflection(metadata,
                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);
        }
    }

}