ingo@4152: package de.intevation.flys.artifacts.access;
ingo@4152: 
ingo@4152: import java.util.Date;
ingo@4152: 
ingo@4152: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@4152: import de.intevation.flys.artifacts.model.Timerange;
ingo@4152: 
ingo@4152: 
ingo@4152: public class HistoricalDischargeAccess extends RiverAccess {
ingo@4152: 
ingo@4232:     public static enum EvaluationMode {
ingo@4232:         W, Q
ingo@4232:     }
ingo@4232: 
ingo@4152:     public static final String DATA_EVALUATION_TIME = "year_range";
ingo@4233:     public static final String DATA_EVALUATION_MODE = "historical_mode";
ingo@4233:     public static final String DATA_INPUT_VALUES = "historical_values";
ingo@4152: 
ingo@4152:     private Timerange evaluationTimerange;
ingo@4232:     private EvaluationMode evaluationMode;
ingo@4152: 
ingo@4233:     private double[] qs;
ingo@4233:     private double[] ws;
ingo@4233: 
ingo@4152:     public HistoricalDischargeAccess(FLYSArtifact artifact) {
ingo@4152:         super(artifact);
ingo@4152:     }
ingo@4152: 
ingo@4233:     /**
ingo@4233:      * This method returns the evaluation mode. The evaluation mode W is set, if
ingo@4233:      * the <b>DATA_EVALUATION_MODE</b> is 0. Otherwise, the evaluation mode Q is
ingo@4233:      * set.
ingo@4233:      * 
ingo@4233:      * @return EvaluationMode.W if the parameter <i>historical_mode</i> is set
ingo@4233:      *         to 0, otherwise EvaluationMode.Q.
ingo@4233:      */
ingo@4232:     public EvaluationMode getEvaluationMode() {
ingo@4232:         if (evaluationMode == null) {
ingo@4233:             int mode = getInteger(DATA_EVALUATION_MODE);
ingo@4232:             evaluationMode = mode == 0 ? EvaluationMode.W : EvaluationMode.Q;
ingo@4232:         }
ingo@4232: 
ingo@4232:         return evaluationMode;
ingo@4232:     }
ingo@4232: 
ingo@4233:     /**
ingo@4233:      * This method returns the time range specified by <i>year_range</i>
ingo@4233:      * parameter. This parameter has to be a string that consists of two long
ingo@4233:      * values (time millis since 1970) separated by a ';'.
ingo@4233:      * 
ingo@4233:      * @return the evaluation time range specified by <i>year_range</i>.
ingo@4233:      */
ingo@4152:     public Timerange getEvaluationTimerange() {
ingo@4152:         if (evaluationTimerange == null) {
ingo@4152:             long[] startend = getLongArray(DATA_EVALUATION_TIME);
ingo@4152: 
ingo@4152:             if (startend != null && startend.length > 1) {
ingo@4152:                 Date start = new Date(startend[0]);
ingo@4152:                 Date end = new Date(startend[1]);
ingo@4152: 
ingo@4152:                 evaluationTimerange = new Timerange(start, end);
ingo@4152:             }
ingo@4152:         }
ingo@4152: 
ingo@4152:         return evaluationTimerange;
ingo@4152:     }
ingo@4233: 
ingo@4233:     /**
ingo@4233:      * This method returns the input Q values if the evaluation mode Q is set.
ingo@4233:      * Otherwise, this method will return a double array of length 0. The values
ingo@4233:      * returned by this method are extracted from string parameter
ingo@4233:      * <i>historical_values</i>.
ingo@4233:      * 
ingo@4233:      * @return the input Q values or a double array of length 0.
ingo@4233:      */
ingo@4233:     public double[] getQs() {
ingo@4233:         if (qs == null) {
ingo@4233:             if (getEvaluationMode() == EvaluationMode.Q) {
ingo@4233:                 qs = getDoubleArray(DATA_INPUT_VALUES);
ingo@4233:             }
ingo@4233:             else {
ingo@4233:                 qs = new double[0];
ingo@4233:             }
ingo@4233:         }
ingo@4233: 
ingo@4233:         return qs;
ingo@4233:     }
ingo@4233: 
ingo@4233:     /**
ingo@4233:      * This method returns the input W values if the evaluation mode W is set.
ingo@4233:      * Otherwise, this method will return a double array of length 0. The values
ingo@4233:      * returned by this method are extracted from string parameter
ingo@4233:      * <i>historical_values</i>.
ingo@4233:      * 
ingo@4233:      * @return the input W values or a double array of length 0.
ingo@4233:      */
ingo@4233:     public double[] getWs() {
ingo@4233:         if (ws == null) {
ingo@4233:             if (getEvaluationMode() == EvaluationMode.W) {
ingo@4233:                 ws = getDoubleArray(DATA_INPUT_VALUES);
ingo@4233:             }
ingo@4233:             else {
ingo@4233:                 ws = new double[0];
ingo@4233:             }
ingo@4233:         }
ingo@4233: 
ingo@4233:         return ws;
ingo@4233:     }
ingo@4152: }