/*
 * Copyright 2002-2017 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.integration.jdbc.config;

import org.w3c.dom.Element;

import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.integration.config.xml.IntegrationNamespaceUtils;
import org.springframework.integration.jdbc.store.JdbcMessageStore;
import org.springframework.util.StringUtils;

/**
 * Parser for {@link JdbcMessageStore}.
 *
 * @author Dave Syer
 * @since 2.0
 */
public class JdbcMessageStoreParser extends AbstractBeanDefinitionParser {

	@Override
	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {

		Object source = parserContext.extractSource(element);

		BeanDefinitionBuilder builder = BeanDefinitionBuilder
				.genericBeanDefinition(JdbcMessageStore.class);

		String dataSourceRef = element.getAttribute("data-source");
		String simpleJdbcOperationsRef = element.getAttribute("jdbc-operations");
		boolean refToDataSourceSet = StringUtils.hasText(dataSourceRef);
		boolean refToSimpleJdbcOperationsSet = StringUtils.hasText(simpleJdbcOperationsRef);
		if ((refToDataSourceSet && refToSimpleJdbcOperationsSet)
				|| (!refToDataSourceSet && !refToSimpleJdbcOperationsSet)) {
			parserContext.getReaderContext().error(
					"Exactly one of the attributes data-source or "
							+ "simple-jdbc-operations should be set for the JDBC message-store", source);
		}

		if (refToDataSourceSet) {
			builder.addConstructorArgReference(dataSourceRef);
		}
		else {
			builder.addConstructorArgReference(simpleJdbcOperationsRef);
		}

		IntegrationNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "lob-handler");
		IntegrationNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "serializer");
		IntegrationNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "deserializer");
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "table-prefix", "tablePrefix");
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "region", "region");

		return builder.getBeanDefinition();

	}

}