/*
 * Copyright 2011 JBoss Inc 
 *
 * 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.kie.services.impl.bpmn2;

import org.drools.core.xml.ExtensibleXmlParser;
import org.drools.core.xml.Handler;
import org.jbpm.bpmn2.xml.PropertyHandler;
import org.jbpm.process.core.context.variable.Variable;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
 * This handler collects information about inputs to activities and tasks 
 */
public class ProcessGetInputHandler extends PropertyHandler implements Handler {

    private BPMN2DataServiceSemanticModule module;
    private ProcessDescriptionRepository repository;
    
    public ProcessGetInputHandler() {
        super();
    }
    
    public ProcessGetInputHandler(BPMN2DataServiceSemanticModule module) {
		this.module = module;
    	this.repository = module.getRepo();	
	}

    @Override
    public Object start(final String uri, final String localName,
                    final Attributes attrs, final ExtensibleXmlParser parser)
                    throws SAXException {
        String mainProcessId = module.getRepoHelper().getProcess().getId();
        
        Object result = super.start(uri, localName, attrs, parser);
        if(result instanceof Variable){
            String metaData = (String)((Variable)result).getMetaData("ItemSubjectRef");
            if(metaData != null) {
                String structureRef = module.getRepoHelper().getGlobalItemDefinitions().get(metaData);
                if(structureRef != null) {
                    repository.getProcessDesc(mainProcessId).getInputs().put(((Variable)result).getName(), structureRef);
                } else { 
                    repository.getProcessDesc(mainProcessId).getInputs().put(((Variable)result).getName(), ((Variable)result).getType().getStringType());
                }
            }
        }
        
        return result;
    }

    public void setRepository(ProcessDescriptionRepository repository) {
        this.repository = repository;
    }
}
