/*
* 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 org.springframework.data.gemfire.repository.support;
import static org.springframework.data.gemfire.util.RuntimeExceptionFactory.newIllegalArgumentException;
import static org.springframework.data.gemfire.util.RuntimeExceptionFactory.newIllegalStateException;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Optional;
import org.apache.geode.cache.Region;
import org.springframework.data.gemfire.GemfireTemplate;
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.projection.ProjectionFactory;
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.EvaluationContextProvider;
import org.springframework.data.repository.query.QueryLookupStrategy;
import org.springframework.data.repository.query.QueryLookupStrategy.Key;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* {@link RepositoryFactorySupport} implementation creating repository proxies
* for Gemfire.
*
* @author Oliver Gierke
* @author David Turanski
* @author John Blum
*/
public class GemfireRepositoryFactory extends RepositoryFactorySupport {
private final MappingContext<? extends GemfirePersistentEntity<?>, GemfirePersistentProperty> mappingContext;
private final Regions regions;
/**
* Creates a new {@link GemfireRepositoryFactory}.
*
* @param regions must not be {@literal null}.
* @param mappingContext the {@link MappingContext} used by the constructed Repository for mapping entities
* to the underlying data store, must not be {@literal null}.
*/
public GemfireRepositoryFactory(Iterable<Region<?, ?>> regions,
MappingContext<? extends GemfirePersistentEntity<?>, GemfirePersistentProperty> mappingContext) {
Assert.notNull(regions, "Regions must not be null");
Assert.notNull(mappingContext, "MappingContext must not be null");
this.mappingContext = mappingContext;
this.regions = new Regions(regions, this.mappingContext);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getEntityInformation(java.lang.Class)
*/
@Override
@SuppressWarnings("unchecked")
public <T, ID> GemfireEntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {
GemfirePersistentEntity<T> entity = (GemfirePersistentEntity<T>) mappingContext.getPersistentEntity(domainClass)
.orElseThrow(() -> newIllegalArgumentException("Unable to resolve PersistentEntity for type [%s]",
domainClass));
return new DefaultGemfireEntityInformation<>(entity);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getTargetRepository(org.springframework.data.repository.core.RepositoryInformation)
*/
@Override
protected Object getTargetRepository(RepositoryInformation repositoryInformation) {
GemfireEntityInformation<?, Serializable> entityInformation =
getEntityInformation(repositoryInformation.getDomainType());
GemfireTemplate gemfireTemplate = getTemplate(repositoryInformation);
return getTargetRepositoryViaReflection(repositoryInformation, gemfireTemplate, entityInformation);
}
GemfireTemplate getTemplate(RepositoryMetadata metadata) {
GemfirePersistentEntity<?> entity = mappingContext.getPersistentEntity(metadata.getDomainType())
.orElseThrow(() -> newIllegalArgumentException("Unable to resolve PersistentEntity for type [%s]",
metadata.getDomainType()));
String entityRegionName = entity.getRegionName();
String repositoryRegionName = getRepositoryRegionName(metadata.getRepositoryInterface());
String resolvedRegionName = StringUtils.hasText(repositoryRegionName) ? repositoryRegionName : entityRegionName;
Region<?, ?> region = regions.getRegion(resolvedRegionName);
if (region == null) {
throw newIllegalStateException("No Region [%1$s] was found for domain class [%2$s];"
+ " Make sure you have configured a GemFire Region of that name in your application context",
resolvedRegionName, metadata.getDomainType().getName());
}
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 [%1$s], but the entity to be stored has an id of type [%2$s]",
regionKeyType.getName(), entityIdType.getName()));
}
return new GemfireTemplate(region);
}
String getRepositoryRegionName(Class<?> repositoryInterface) {
return (repositoryInterface.isAnnotationPresent(org.springframework.data.gemfire.mapping.annotation.Region.class) ?
repositoryInterface.getAnnotation(org.springframework.data.gemfire.mapping.annotation.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 org.springframework.data.repository.core.support.RepositoryFactorySupport
* #getQueryLookupStrategy(Key, EvaluationContextProvider)
*/
@Override
protected Optional<QueryLookupStrategy> getQueryLookupStrategy(Key key,
EvaluationContextProvider evaluationContextProvider) {
return Optional.of(
(Method method, RepositoryMetadata metadata, ProjectionFactory factory, NamedQueries namedQueries) -> {
GemfireQueryMethod queryMethod = new GemfireQueryMethod(method, metadata, factory, mappingContext);
GemfireTemplate template = getTemplate(metadata);
if (queryMethod.hasAnnotatedQuery()) {
return new StringBasedGemfireRepositoryQuery(queryMethod, template).asUserDefinedQuery();
}
if (namedQueries.hasQuery(queryMethod.getNamedQueryName())) {
return new StringBasedGemfireRepositoryQuery(namedQueries.getQuery(queryMethod.getNamedQueryName()),
queryMethod, template).asUserDefinedQuery();
}
return new PartTreeGemfireRepositoryQuery(queryMethod, template);
});
}
}