de.itsvs.cwtrpc.controller.config.AutowiredRemoteServiceGroupConfigBeanDefinitionParser.java Source code

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Here is the source code for de.itsvs.cwtrpc.controller.config.AutowiredRemoteServiceGroupConfigBeanDefinitionParser.java

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/*
 *  Copyright 2011 IT Services VS GmbH
 *
 *  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 de.itsvs.cwtrpc.controller.config;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.ManagedList;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;

import de.itsvs.cwtrpc.controller.AutowiredRemoteServiceGroupConfig;
import de.itsvs.cwtrpc.core.pattern.MatcherType;
import de.itsvs.cwtrpc.core.pattern.PatternFactory;
import de.itsvs.cwtrpc.core.pattern.PatternType;

/**
 * @author Volker Schmidt
 * @since 0.9
 */
public class AutowiredRemoteServiceGroupConfigBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
    public static final PatternType DEFAULT_PATTERN_TYPE = PatternType.REGEX;

    private final BaseServiceConfigParser baseServiceConfigParser;

    public AutowiredRemoteServiceGroupConfigBeanDefinitionParser(BaseServiceConfigParser baseServiceConfigParser) {
        this.baseServiceConfigParser = baseServiceConfigParser;
    }

    public BaseServiceConfigParser getBaseServiceConfigParser() {
        return baseServiceConfigParser;
    }

    public AbstractBeanDefinition parseNested(Element element, ParserContext parserContext) {
        return parseInternal(element, parserContext);
    }

    @SuppressWarnings("rawtypes")
    @Override
    protected Class getBeanClass(Element element) {
        return AutowiredRemoteServiceGroupConfig.class;
    }

    @Override
    protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
        final String[] basePackages;
        ManagedList<BeanDefinition> filters;

        getBaseServiceConfigParser().update(element, parserContext, builder);

        if (element.hasAttribute(XmlNames.BASE_PACKAGES_ATTR)) {
            basePackages = StringUtils.tokenizeToStringArray(element.getAttribute(XmlNames.BASE_PACKAGES_ATTR),
                    ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
            builder.addPropertyValue("basePackages", basePackages);
        }

        filters = new ManagedList<BeanDefinition>();
        for (Element child : DomUtils.getChildElementsByTagName(element, XmlNames.INCLUDE_FILTER_ELEMENT)) {
            filters.add(parseFilter(child, parserContext));
        }
        if (!filters.isEmpty()) {
            builder.addPropertyValue("includeFilters", filters);
        }

        filters = new ManagedList<BeanDefinition>();
        for (Element child : DomUtils.getChildElementsByTagName(element, XmlNames.EXCLUDE_FILTER_ELEMENT)) {
            filters.add(parseFilter(child, parserContext));
        }
        if (!filters.isEmpty()) {
            builder.addPropertyValue("excludeFilters", filters);
        }
    }

    protected BeanDefinition parseFilter(Element element, ParserContext parserContext) {
        final BeanDefinitionBuilder bdd;
        final Object type;
        final String expression;

        bdd = BeanDefinitionBuilder.rootBeanDefinition(PatternFactory.class);
        bdd.getRawBeanDefinition().setSource(parserContext.extractSource(element));
        if (parserContext.isDefaultLazyInit()) {
            bdd.setLazyInit(true);
        }

        if (element.hasAttribute(XmlNames.TYPE_ATTR)) {
            type = element.getAttribute(XmlNames.TYPE_ATTR);
        } else {
            type = DEFAULT_PATTERN_TYPE;
        }

        expression = element.getAttribute(XmlNames.EXPRESSION_ATTR);
        if (!StringUtils.hasText(expression)) {
            parserContext.getReaderContext().error("Filter expression must not be empty",
                    parserContext.extractSource(element));
        }

        bdd.setFactoryMethod("compile");
        bdd.addConstructorArgValue(type);
        bdd.addConstructorArgValue(MatcherType.PACKAGE);
        bdd.addConstructorArgValue(expression);

        return bdd.getBeanDefinition();
    }
}