net.solarnetwork.node.reactor.simple.SimpleReactorService.java Source code

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Here is the source code for net.solarnetwork.node.reactor.simple.SimpleReactorService.java

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/* ==================================================================
 * SimpleReactorService.java - Mar 1, 2011 4:46:31 PM
 * 
 * Copyright 2007-2011 SolarNetwork.net Dev Team
 * 
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of 
 * the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
 * 02111-1307 USA
 * ==================================================================
 */

package net.solarnetwork.node.reactor.simple;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import net.solarnetwork.node.reactor.Instruction;
import net.solarnetwork.node.reactor.InstructionDao;
import net.solarnetwork.node.reactor.InstructionStatus;
import net.solarnetwork.node.reactor.ReactorSerializationService;
import net.solarnetwork.node.reactor.ReactorService;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * Simple implementation of {@link ReactorService}.
 * 
 * @author matt
 * @version 1.1
 */
public class SimpleReactorService implements ReactorService {

    private Collection<ReactorSerializationService> serializationServices;
    private InstructionDao instructionDao;

    @Override
    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public InstructionStatus processInstruction(Instruction instruction) {
        // look for an existing status...
        Instruction instr = instructionDao.getInstruction(instruction.getRemoteInstructionId(),
                instruction.getInstructorId());
        if (instr == null) {
            // persist new status
            instr = instructionDao.getInstruction(instructionDao.storeInstruction(instruction));
        }
        return instr.getStatus();
    }

    @Override
    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public List<InstructionStatus> processInstruction(String instructorId, Object data, String dataType,
            Map<String, ?> properties) {
        List<Instruction> instructions = null;
        for (ReactorSerializationService rss : serializationServices) {
            try {
                instructions = rss.decodeInstructions(instructorId, data, dataType, properties);
            } catch (IllegalArgumentException e) {
                // ignore this, and just move on
            }
            if (instructions != null) {
                break;
            }
        }
        List<InstructionStatus> results = new ArrayList<InstructionStatus>(instructions.size());
        for (Instruction instruction : instructions) {
            InstructionStatus status = processInstruction(instruction);
            if (status != null) {
                results.add(status);
            }
        }
        return results;
    }

    public void setSerializationServices(Collection<ReactorSerializationService> serializationServices) {
        this.serializationServices = serializationServices;
    }

    public void setInstructionDao(InstructionDao instructionDao) {
        this.instructionDao = instructionDao;
    }

}