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/*
 * 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.drools.core.command.runtime.process;

import org.drools.core.command.IdentifiableResult;
import org.drools.core.command.impl.ExecutableCommand;
import org.drools.core.command.impl.RegistryContext;
import org.drools.core.runtime.impl.ExecutionResultImpl;
import org.drools.core.xml.jaxb.util.JaxbMapAdapter;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.process.ProcessInstance;
import org.kie.api.runtime.Context;
import org.kie.internal.command.CorrelationKeyCommand;
import org.kie.internal.jaxb.CorrelationKeyXmlAdapter;
import org.kie.internal.process.CorrelationAwareProcessRuntime;
import org.kie.internal.process.CorrelationKey;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@XmlRootElement
@XmlAccessorType(XmlAccessType.NONE)
public class StartCorrelatedProcessCommand implements ExecutableCommand, IdentifiableResult, CorrelationKeyCommand {

    /** Generated serial version UID */
    private static final long serialVersionUID = 4032503589773486738L;

    @XmlAttribute(required = true)
    private String processId;

    @XmlElement(name = "correlation-key")
    @XmlJavaTypeAdapter(value = CorrelationKeyXmlAdapter.class)
    private CorrelationKey correlationKey;

    @XmlJavaTypeAdapter(JaxbMapAdapter.class)
    @XmlElement(name="parameter")
    private Map parameters = new HashMap();

    @XmlElementWrapper(name="data")
    private List data = null;
    @XmlAttribute(name="out-identifier")
    private String outIdentifier;

    public StartCorrelatedProcessCommand() {
    }

    public StartCorrelatedProcessCommand(String processId, CorrelationKey correlationKey) {
        this.processId = processId;
        this.correlationKey = correlationKey;
    }

    public StartCorrelatedProcessCommand(String processId, CorrelationKey correlationKey, String outIdentifier) {
        this(processId, correlationKey);
        this.outIdentifier = outIdentifier;
    }

    public StartCorrelatedProcessCommand(String processId, CorrelationKey correlationKey, 
            Map parameters) {
        this(processId, correlationKey);
        this.parameters = parameters;
    }

    public StartCorrelatedProcessCommand(String processId, CorrelationKey correlationKey, 
            Map parameters, String outIdentifier) {
        this(processId, correlationKey, outIdentifier);
        this.parameters = parameters;
    }

    public String getProcessId() {
        return processId;
    }

    public void setProcessId(String processId) {
        this.processId = processId;
    }

    public Map getParameters() {
        return parameters;
    }

    public void setParameters(Map parameters) {
        this.parameters = parameters;
    }

    public void putParameter(String key, Object value) {
        getParameters().put(key, value);
    }

    public List getData() {
        return data;
    }

    public void setData(List data) {
        this.data = data;
    }

    public void setOutIdentifier(String outIdentifier) {
        this.outIdentifier = outIdentifier;
    }

    public String getOutIdentifier() {
        return outIdentifier;
    }
   
    @Override
    public CorrelationKey getCorrelationKey() {
        return correlationKey;
    }

    @Override
    public void setCorrelationKey(CorrelationKey correlationKey) {
        this.correlationKey = correlationKey;
    }

    public ProcessInstance execute(Context context) {
        KieSession ksession = ((RegistryContext) context).lookup( KieSession.class );

        if (data != null) {
            for (Object o: data) {
                ksession.insert(o);
            }
        }
        ProcessInstance processInstance = ((CorrelationAwareProcessRuntime)ksession).startProcess(processId, correlationKey, parameters);
        if ( this.outIdentifier != null ) {
            ((RegistryContext) context).lookup( ExecutionResultImpl.class ).setResult(this.outIdentifier, processInstance.getId());
        }
        return processInstance;
    }

    public String toString() {
        String result = "session.startProcess(" + processId + ", " + correlationKey + ", [";
        if (parameters != null) {
            int i = 0;
            for (Map.Entry entry: parameters.entrySet()) {
                if (i++ > 0) {
                    result += ", ";
                }
                result += entry.getKey() + "=" + entry.getValue();
            }
        }
        result += "]);";
        return result;
    }
}
 















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