/*
 * Copyright 2009-2010 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.hyracks.dataflow.std.base;

import java.util.UUID;

import org.json.JSONException;
import org.json.JSONObject;

import edu.uci.ics.hyracks.api.constraints.IConstraintExpressionAcceptor;
import edu.uci.ics.hyracks.api.dataflow.ConnectorDescriptorId;
import edu.uci.ics.hyracks.api.dataflow.IConnectorDescriptor;
import edu.uci.ics.hyracks.api.job.JobPlan;
import edu.uci.ics.hyracks.api.job.JobSpecification;

public abstract class AbstractConnectorDescriptor implements IConnectorDescriptor {
    private static final long serialVersionUID = 1L;
    protected final ConnectorDescriptorId id;

    public AbstractConnectorDescriptor(JobSpecification spec) {
        this.id = new ConnectorDescriptorId(UUID.randomUUID());
        spec.getConnectorMap().put(id, this);
    }

    public ConnectorDescriptorId getConnectorId() {
        return id;
    }

    @Override
    public JSONObject toJSON() throws JSONException {
        JSONObject jconn = new JSONObject();

        jconn.put("type", "connector");
        jconn.put("id", getConnectorId().getId().toString());
        jconn.put("java-class", getClass().getName());

        return jconn;
    }

    @Override
    public void contributeSchedulingConstraints(IConstraintExpressionAcceptor constraintAcceptor, JobPlan plan) {
        // do nothing
    }
}