/*
* Copyright 2012 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.repository.support;
import java.io.Serializable;
import java.lang.reflect.Method;
import org.springframework.data.gemfire.GemfireTemplate;
import org.springframework.data.gemfire.mapping.GemfireMappingContext;
import org.springframework.data.gemfire.mapping.GemfirePersistentEntity;
import org.springframework.data.gemfire.mapping.GemfirePersistentProperty;
import org.springframework.data.gemfire.mapping.Regions;
import org.springframework.data.gemfire.repository.query.DefaultGemfireEntityInformation;
import org.springframework.data.gemfire.repository.query.GemfireEntityInformation;
import org.springframework.data.gemfire.repository.query.GemfireQueryMethod;
import org.springframework.data.gemfire.repository.query.PartTreeGemfireRepositoryQuery;
import org.springframework.data.gemfire.repository.query.StringBasedGemfireRepositoryQuery;
import org.springframework.data.mapping.context.MappingContext;
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.util.Assert;
import org.springframework.util.StringUtils;
import com.gemstone.gemfire.cache.Region;
/**
* {@link RepositoryFactorySupport} implementation creating repository proxies
* for Gemfire.
*
* @author Oliver Gierke
* @author David Turanski
*/
public class GemfireRepositoryFactory extends RepositoryFactorySupport {
private final MappingContext<? extends GemfirePersistentEntity<?>, GemfirePersistentProperty> context;
private final Regions regions;
/**
* Creates a new {@link GemfireRepositoryFactory}.
*
* @param regions must not be {@literal null}.
* @param context the {@link MappingContext} used by the constructed Repository for mapping entities
* to the underlying data store.
*/
public GemfireRepositoryFactory(Iterable<Region<?, ?>> regions, MappingContext<? extends GemfirePersistentEntity<?>,
GemfirePersistentProperty> context) {
Assert.notNull(regions);
this.context = context == null ? new GemfireMappingContext() : context;
this.regions = new Regions(regions, this.context);
}
/*
* (non-Javadoc)
*
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport
* #getEntityInformation(java.lang.Class)
*/
@Override
@SuppressWarnings("unchecked")
public <T, ID extends Serializable> GemfireEntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {
GemfirePersistentEntity<T> entity = (GemfirePersistentEntity<T>) context.getPersistentEntity(domainClass);
return new DefaultGemfireEntityInformation<T, ID>(entity);
}
/*
* (non-Javadoc)
*
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport
* #getTargetRepository(org.springframework.data.repository.core.RepositoryMetadata)
*/
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
protected Object getTargetRepository(RepositoryMetadata metadata) {
GemfireEntityInformation<?, Serializable> entityInformation = getEntityInformation(metadata.getDomainType());
GemfireTemplate gemfireTemplate = getTemplate(metadata);
return new SimpleGemfireRepository(gemfireTemplate, entityInformation);
}
private GemfireTemplate getTemplate(RepositoryMetadata metadata) {
GemfirePersistentEntity<?> entity = context.getPersistentEntity(metadata.getDomainType());
String entityRegionName = entity.getRegionName();
String repositoryRegionName = getRepositoryRegionName(metadata.getRepositoryInterface());
String regionName = (StringUtils.hasText(repositoryRegionName) ? repositoryRegionName : entityRegionName);
Region<?, ?> region = regions.getRegion(regionName);
if (region == null) {
throw new IllegalStateException(String.format("No region '%s' found for domain class %s!"
+ " Make sure you have configured a Gemfire region of that name in your application context!",
regionName, metadata.getDomainType()));
}
Class<?> regionKeyType = region.getAttributes().getKeyConstraint();
Class<?> entityIdType = metadata.getIdType();
if (regionKeyType != null && entity.getIdProperty() != null) {
Assert.isTrue(regionKeyType.isAssignableFrom(entityIdType), String.format(
"The region referenced only supports keys of type %s but the entity to be stored has an id of type %s!",
regionKeyType, entityIdType));
}
return new GemfireTemplate(region);
}
private String getRepositoryRegionName(final Class<?> repositoryClass) {
return (repositoryClass.isAnnotationPresent(org.springframework.data.gemfire.mapping.Region.class) ?
repositoryClass.getAnnotation(org.springframework.data.gemfire.mapping.Region.class).value() : null);
}
/*
* (non-Javadoc)
*
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport
* #getRepositoryBaseClass(org.springframework.data.repository.core.RepositoryMetadata)
*/
@Override
protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
return SimpleGemfireRepository.class;
}
/*
* (non-Javadoc)
*
* @see springframework.data.repository.core.support.RepositoryFactorySupport
* #getQueryLookupStrategy(org.springframework.data.repository.query.QueryLookupStrategy.Key)
*/
@Override
protected QueryLookupStrategy getQueryLookupStrategy(Key key) {
return new QueryLookupStrategy() {
@Override
public RepositoryQuery resolveQuery(Method method, RepositoryMetadata metadata, NamedQueries namedQueries) {
GemfireQueryMethod queryMethod = new GemfireQueryMethod(method, metadata, context);
GemfireTemplate template = getTemplate(metadata);
if (queryMethod.hasAnnotatedQuery()) {
return new StringBasedGemfireRepositoryQuery(queryMethod, template).asUserDefinedQuery();
}
String namedQueryName = queryMethod.getNamedQueryName();
if (namedQueries.hasQuery(namedQueryName)) {
return new StringBasedGemfireRepositoryQuery(namedQueries.getQuery(namedQueryName), queryMethod,
template).asUserDefinedQuery();
}
return new PartTreeGemfireRepositoryQuery(queryMethod, template);
}
};
}
}