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jBPM BPMN2
There is a newer version: 10.0.0
/*
 * Copyright 2010 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.bpmn2.xml;

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

import org.jbpm.compiler.xml.Handler;
import org.jbpm.compiler.xml.Parser;
import org.jbpm.compiler.xml.core.BaseAbstractHandler;
import org.jbpm.workflow.core.impl.WorkflowProcessImpl;
import org.kie.api.definition.process.Process;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

public class GlobalHandler extends BaseAbstractHandler implements Handler {

    public GlobalHandler() {
        if ((this.validParents == null) && (this.validPeers == null)) {
            this.validParents = new HashSet();
            this.validParents.add(Process.class);

            this.validPeers = new HashSet();
            this.validPeers.add(null);

            this.allowNesting = false;
        }
    }

    public Object start(final String uri,
            final String localName,
            final Attributes attrs,
            final Parser parser) throws SAXException {
        parser.startElementBuilder(localName, attrs);
        WorkflowProcessImpl process = (WorkflowProcessImpl) parser.getParent();

        final String identifier = attrs.getValue("identifier");
        final String type = attrs.getValue("type");
        emptyAttributeCheck(localName, "identifier", identifier, parser);
        emptyAttributeCheck(localName, "type", type, parser);

        Map map = process.getGlobals();
        if (map == null) {
            map = new HashMap<>();
            process.setGlobals(map);
        }
        map.put(identifier, type);

        return null;
    }

    public Object end(final String uri,
            final String localName,
            final Parser parser) throws SAXException {
        parser.endElementBuilder();
        return null;
    }

    public Class generateNodeFor() {
        return null;
    }

}