/*
 * 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.impl.ExecutableCommand;
import org.drools.core.command.impl.RegistryContext;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.process.ProcessInstance;
import org.kie.api.runtime.Context;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;
import java.util.ArrayList;
import java.util.Collection;

@XmlRootElement
@XmlAccessorType(XmlAccessType.NONE)
public class GetProcessInstancesCommand
    implements
    ExecutableCommand<Collection<ProcessInstance>> {

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

        Collection<ProcessInstance> instances = ksession.getProcessInstances();
        Collection<ProcessInstance> result = new ArrayList<ProcessInstance>();

        for ( ProcessInstance instance : instances ) {
            result.add( instance );
        }

        return result;
    }

    public String toString() {
        return "session.getProcessInstances();";
    }

}