AerospikeClientBeanDefinitionParser.java

/*
 * Copyright 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.aerospike.config;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.data.config.ParsingUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;

import com.aerospike.client.AerospikeClient;

/**
 * @author Oliver Gierke
 */
public class AerospikeClientBeanDefinitionParser implements BeanDefinitionParser {

	private final ClientPolicyBeanDefinitionParser clientPolicyParser = new ClientPolicyBeanDefinitionParser();

	/* 
	 * (non-Javadoc)
	 * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
	 */
	@Override
	public BeanDefinition parse(Element element, ParserContext parserContext) {

		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(AerospikeClient.class);
		builder.addConstructorArgValue(element.getAttribute("host"));
		builder.addConstructorArgValue(element.getAttribute("port"));
		builder.setDestroyMethodName("close");

		parserContext.getRegistry().registerBeanDefinition("aerospikeClient",
				ParsingUtils.getSourceBeanDefinition(builder, parserContext, element));

		parseNestedClientPolicy(element, parserContext, builder);

		return null;
	}

	/**
	 * Looks up a nested {@code client-policy} element within the given one and pases a {@link BeanDefinition} from it.
	 * 
	 * @param element the current {@code client} element, must not be {@literal null}.
	 * @param parserContext must not be {@literal null}.
	 * @param builder must not be {@literal null}.
	 */
	private void parseNestedClientPolicy(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {

		Element clientPolicyElement = DomUtils.getChildElementByTagName(element, "client-policy");

		if (clientPolicyElement != null) {

			BeanDefinition policyDefinition = clientPolicyParser.parse(clientPolicyElement, parserContext);
			builder.addConstructorArgValue(policyDefinition);
		}
	}
}