TaskTupleUtility.java

package eu.europeana.cloud.service.dps.storm.utils;

import eu.europeana.cloud.service.dps.PluginParameterKeys;
import eu.europeana.cloud.service.dps.storm.StormTaskTuple;

/**
 * Created by Tarek on 10/15/2015.
 */
public final class TaskTupleUtility {
    //check it parameter is provided in StormTaskTuple
    protected static boolean isProvidedAsParameter(StormTaskTuple stormTaskTuple, String parameter) {
        if (stormTaskTuple.getParameter(parameter) != null) {
            return true;
        } else {
            return false;
        }
    }

    //if the parameter was provided explicity in StormTaskTuple its value will be returned or its default value provided in PluginParameterKeys will be returned
    public static String getParameterFromTuple(StormTaskTuple stormTaskTuple, String parameter) {
        String outputValue = PluginParameterKeys.PLUGIN_PARAMETERS.get(parameter);
        if (isProvidedAsParameter(stormTaskTuple, parameter)) {
            outputValue = stormTaskTuple.getParameter(parameter);
        }
        return outputValue;
    }
}