org.xacml4j.spring.pdp.PolicyDecisionPointDefinitionParser.java Source code

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Here is the source code for org.xacml4j.spring.pdp.PolicyDecisionPointDefinitionParser.java

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package org.xacml4j.spring.pdp;

/*
 * #%L
 * Xacml4J Spring 3.x Support Module
 * %%
 * Copyright (C) 2009 - 2014 Xacml4J.org
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import java.util.List;

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.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;
import org.xacml4j.spring.PolicyIDReferenceFactoryBean;
import org.xacml4j.spring.PolicySetIDReferenceFactoryBean;

import com.google.common.base.Preconditions;

public class PolicyDecisionPointDefinitionParser extends AbstractBeanDefinitionParser {

    @Override
    protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
        BeanDefinitionBuilder factory = BeanDefinitionBuilder
                .rootBeanDefinition(PolicyDecisionPointFactoryBean.class);
        factory.addConstructorArgValue(element.getAttribute("id"));
        List<Element> childElements = DomUtils.getChildElementsByTagName(element,
                new String[] { "PolicyIdReference", "PolicySetIdReference" });
        if (childElements != null && childElements.size() > 0) {
            parseChildComponents(childElements, factory);
        }
        String pipRef = element.getAttribute("pip");
        factory.addPropertyReference("policyInformationPoint", pipRef);
        String repositoryRef = element.getAttribute("repository");
        factory.addPropertyReference("policyRepository", repositoryRef);
        String auditorRef = element.getAttribute("auditor");
        if (StringUtils.hasText(auditorRef)) {
            factory.addPropertyReference("decisionAuditor", auditorRef);
        }
        String handlers = element.getAttribute("handlers");
        if (StringUtils.hasText(handlers)) {
            factory.addPropertyReference("handlers", handlers);
        }
        String xpathProvider = element.getAttribute("xpath-provider");
        if (StringUtils.hasText(xpathProvider)) {
            factory.addPropertyReference("xpathProvider", xpathProvider);
        }
        String decisionCache = element.getAttribute("decisionCache");
        if (StringUtils.hasText(decisionCache)) {
            factory.addPropertyReference("decisionCache", decisionCache);
        }
        String decisionCacheTTL = element.getAttribute("decisionCacheTTL");
        if (StringUtils.hasText(decisionCache)) {
            factory.addPropertyValue("decisionCacheTTL", decisionCacheTTL);
        }
        return factory.getBeanDefinition();
    }

    private static BeanDefinitionBuilder parseComponent(Element element) {
        BeanDefinitionBuilder component = element.getLocalName().equals("PolicyIdReference")
                ? BeanDefinitionBuilder.rootBeanDefinition(PolicyIDReferenceFactoryBean.class)
                : BeanDefinitionBuilder.rootBeanDefinition(PolicySetIDReferenceFactoryBean.class);
        String id = element.getTextContent();
        if (StringUtils.hasText(id)) {
            component.addPropertyValue("id", id);
        }
        String version = element.getAttribute("version");
        if (StringUtils.hasText(version)) {
            component.addPropertyValue("version", version);
        }
        String latest = element.getAttribute("latest");
        if (StringUtils.hasText(latest)) {
            component.addPropertyValue("latest", latest);
        }
        String earliest = element.getAttribute("earliest");
        if (StringUtils.hasText(earliest)) {
            component.addPropertyValue("earliest", earliest);
        }
        return component;
    }

    private static void parseChildComponents(List<Element> childElements, BeanDefinitionBuilder factory) {
        Preconditions.checkArgument(childElements.size() == 1);
        factory.addPropertyValue("domainPolicy", parseComponent(childElements.get(0)).getBeanDefinition());
    }

}