biz.c24.io.spring.integration.config.XPathSelectorParser.java Source code

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Here is the source code for biz.c24.io.spring.integration.config.XPathSelectorParser.java

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/*
 * Copyright 2011 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 biz.c24.io.spring.integration.config;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;

/**
 * @author Adam Skogman
 */
public class XPathSelectorParser extends AbstractSingleBeanDefinitionParser {

    @Override
    protected boolean shouldGenerateId() {
        return false;
    }

    @Override
    protected boolean shouldGenerateIdAsFallback() {
        return true;
    }

    @Override
    protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {

        String evaluationType = element.getAttribute("evaluation-result-type");

        String expression = element.getAttribute("xpath-statement");
        String expressionRef = element.getAttribute("xpath-statement-ref");

        boolean hasRef = StringUtils.hasText(expressionRef);
        Assert.isTrue(hasRef ^ StringUtils.hasText(expression),
                "Exactly one of the 'xpath-statement' or 'xpath-statement-ref' attributes is required.");
        if (hasRef) {
            builder.addConstructorArgReference(expressionRef);
        } else {
            builder.addConstructorArgValue(expression);
        }

        String stringTestValue = element.getAttribute("string-test-value");

        if (evaluationType.equals("boolean")) {
            builder.getBeanDefinition()
                    .setBeanClass(biz.c24.io.spring.integration.selector.C24BooleanTestXPathMessageSelector.class);
            Assert.state(!StringUtils.hasText(stringTestValue),
                    "'string-test-value' should not be specified when 'evaluation-result-type' is boolean");
        } else if (evaluationType.equals("string")) {
            Assert.hasText(stringTestValue,
                    "'string-test-value' must be specified when 'evaluation-result-type' is string");
            builder.addPropertyValue("valueToTestFor", stringTestValue);
            builder.getBeanDefinition().setBeanClass(
                    biz.c24.io.spring.integration.selector.C24StringValueTestXPathMessageSelector.class);
        } else {
            throw new IllegalArgumentException("Unsupported value [" + evaluationType
                    + "] for 'evaluation-result-type', expected boolean or string.");
        }
    }

}