org.jbpm.casemgmt.cmmn.xml.CaseRoleHandler Maven / Gradle / Ivy

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/*
 * Copyright 2018 Red Hat, Inc. and/or its affiliates.
 *
 * 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.jbpm.casemgmt.cmmn.xml;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;

import org.drools.core.xml.BaseAbstractHandler;
import org.drools.core.xml.ExtensibleXmlParser;
import org.drools.core.xml.Handler;
import org.jbpm.casemgmt.cmmn.core.Role;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.ruleflow.core.RuleFlowProcess;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

public class CaseRoleHandler extends BaseAbstractHandler implements Handler {

    private static final Logger logger = LoggerFactory.getLogger(CaseRoleHandler.class);

    public CaseRoleHandler() {
        if ((this.validParents == null) && (this.validPeers == null)) {
            this.validParents = new HashSet<>();
            this.validParents.add(RuleFlowProcess.class);
            this.validPeers = new HashSet<>();
            this.validPeers.add(null);
            this.validPeers.add(Role.class);
            this.allowNesting = false;
        }
    }

    @SuppressWarnings("unchecked")
    public Object start(final String uri,
                        final String localName,
                        final Attributes attrs,
                        final ExtensibleXmlParser parser) throws SAXException {
        parser.startElementBuilder(localName, attrs);

        String id = attrs.getValue("id");
        String name = attrs.getValue("name");

        logger.debug("Found case role with id {} and name {}", id, name);

        RuleFlowProcess process = ((RuleFlowProcess) parser.getParent(RuleFlowProcess.class));
        String caseRoles = (String) process.getMetaData("customCaseRoles");
        if (caseRoles == null) {
            caseRoles = name;
        } else {
            caseRoles += "," + name;
        }
        process.setMetaData("customCaseRoles", caseRoles);

        // save case roles so they can be easily referenced later for human task performer
        ProcessBuildData buildData = (ProcessBuildData) parser.getData();
        Map roles = (Map) buildData.getMetaData("Roles");
        if (roles == null) {
            roles = new HashMap();
            buildData.setMetaData("Roles", roles);
        }
        Role role = new Role(id, name);
        roles.put(id, role);
        return role;
    }

    @Override
    public Object end(String uri, String localName, ExtensibleXmlParser parser) throws SAXException {
        parser.endElementBuilder();
        return parser.getCurrent();
    }

    @Override
    public Class generateNodeFor() {
        return Role.class;
    }

}