info.archinnov.achilles.entity.operations.impl.ThriftMergerImpl Maven / Gradle / Ivy

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Thrift implementation for Achilles using Hector library
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/**
 *
 * Copyright (C) 2012-2013 DuyHai DOAN
 *
 * 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 info.archinnov.achilles.entity.operations.impl;

import static info.archinnov.achilles.entity.metadata.PropertyType.*;
import info.archinnov.achilles.context.ThriftPersistenceContext;
import info.archinnov.achilles.entity.metadata.EntityMeta;
import info.archinnov.achilles.entity.metadata.PropertyMeta;
import info.archinnov.achilles.entity.operations.ThriftEntityPersister;

import java.lang.reflect.Method;
import java.util.Map;
import java.util.Map.Entry;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ThriftMergerImpl implements Merger {

	private static final Logger log = LoggerFactory.getLogger(ThriftMergerImpl.class);
	private ThriftEntityPersister persister = new ThriftEntityPersister();

	@Override
	public void merge(ThriftPersistenceContext context, Map dirtyMap) {
		if (dirtyMap.size() > 0) {
			EntityMeta meta = context.getEntityMeta();

			if (meta.isClusteredEntity()) {
				mergeClusteredEntity(context, dirtyMap);
			} else {
				mergeEntity(context, dirtyMap);
			}
		}

		dirtyMap.clear();

	}

	private void mergeEntity(ThriftPersistenceContext context, Map dirtyMap) {
		Object entity = context.getEntity();
		for (Entry entry : dirtyMap.entrySet()) {
			PropertyMeta pm = entry.getValue();
			boolean removeProperty = pm.getValueFromField(entity) == null;

			if (removeProperty) {
				log.debug("Removing property {}", pm.getPropertyName());
				persister.removePropertyBatch(context, pm);
			} else {
				if (multiValuesNonProxyTypes.contains(pm.type())) {
					log.debug("Removing dirty collection/map {} before merging", pm.getPropertyName());
					persister.removePropertyBatch(context, pm);
				}
				persister.persistPropertyBatch(context, pm);
			}
		}
	}

	private void mergeClusteredEntity(ThriftPersistenceContext context, Map dirtyMap) {
		Object entity = context.getEntity();
		PropertyMeta pm = dirtyMap.entrySet().iterator().next().getValue();
		Object clusteredValue = pm.getValueFromField(entity);
		if (clusteredValue == null) {
			persister.remove(context);
		} else {
			persister.persistClusteredValue(context, clusteredValue);
		}
	}
}