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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.proxy;

import info.archinnov.achilles.context.ThriftPersistenceContext;
import info.archinnov.achilles.entity.metadata.EntityMeta;
import info.archinnov.achilles.entity.metadata.PropertyMeta;
import info.archinnov.achilles.validation.Validator;

import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;

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

public class ThriftEntityInterceptorBuilder {
	private static final Logger log = LoggerFactory.getLogger(ThriftEntityInterceptorBuilder.class);

	private T target;
	private Set alreadyLoaded = new HashSet();
	private ThriftPersistenceContext context;

	public static  ThriftEntityInterceptorBuilder builder(ThriftPersistenceContext context, T entity) {
		return new ThriftEntityInterceptorBuilder(context, entity);
	}

	public ThriftEntityInterceptorBuilder(ThriftPersistenceContext context, T entity) {
		Validator.validateNotNull(context, "PersistenceContext for interceptor should not be null");
		Validator.validateNotNull(entity, "Target entity for interceptor should not be null");
		this.context = context;
		this.target = entity;
	}

	public ThriftEntityInterceptor build() {
		log.debug("Build interceptor for entity of class {}", context.getEntityMeta().getClassName());

		ThriftEntityInterceptor interceptor = new ThriftEntityInterceptor();

		EntityMeta entityMeta = context.getEntityMeta();

		String className = context.getEntityClass().getCanonicalName();
		Validator.validateNotNull(target, "Target object for interceptor of '%s' should not be null", className);
		Validator.validateNotNull(entityMeta.getGetterMetas(),
				"Getters metadata for interceptor of '%s' should not be null", className);
		Validator.validateNotNull(entityMeta.getSetterMetas(),
				"Setters metadata for interceptor of '%s' should not be null", className);
		if (entityMeta.isClusteredEntity()) {
			Validator.validateNotNull(context.getWideRowDao(), "Column Family Dao for '%s' should not be null",
					className);
		} else {
			Validator.validateNotNull(context.getEntityDao(), "Entity dao for '%s' should not be null", className);
		}
		PropertyMeta idMeta = entityMeta.getIdMeta();
		Validator.validateNotNull(idMeta, "Id metadata for '%s' should not be null", className);

		interceptor.setTarget(target);
		interceptor.setContext(context);
		interceptor.setGetterMetas(entityMeta.getGetterMetas());
		interceptor.setSetterMetas(entityMeta.getSetterMetas());
		interceptor.setIdGetter(idMeta.getGetter());
		interceptor.setIdSetter(idMeta.getSetter());

		if (context.isLoadEagerFields()) {
			alreadyLoaded.addAll(entityMeta.getEagerGetters());
		}

		interceptor.setAlreadyLoaded(alreadyLoaded);
		interceptor.setDirtyMap(new HashMap());

		interceptor.setPrimaryKey(context.getPrimaryKey());

		return interceptor;
	}

	public ThriftEntityInterceptorBuilder alreadyLoaded(Set alreadyLoaded) {
		this.alreadyLoaded = alreadyLoaded;
		return this;
	}
}