org.openl.rules.variation.ComplexVariation Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of org.openl.rules.variation Show documentation

Classes and utilities to work with OpenL Rules Variations

There is a newer version: 5.27.9

Show newest version

package org.openl.rules.variation;

import javax.xml.bind.annotation.XmlRootElement;

/**
 * Complex variation combines multiple variations that all will be applied to arguments sequentially.
 *
 * @author PUdalau
 */
@XmlRootElement
@Deprecated
public class ComplexVariation extends Variation {
    private Variation[] variations;

    public ComplexVariation() {
    }

    /**
     * Constructs complex variation with the specified ID.
     *
     * @param variationID Unique ID for this variation.
     * @param variations Variations that composes this complex variation.
     */
    public ComplexVariation(String variationID, Variation... variations) {
        super(variationID);
        this.variations = variations;
    }

    /**
     * Constructs complex variation with generated ID.
     *
     * @param variationID Unique ID for this variation.
     * @param variations Variations that composes this complex variation.
     */
    public ComplexVariation(Variation... variations) {
        this(createVariationID(variations), variations);
    }

    /**
     * Generates ID for complex variation.
     *
     * @param variations Variations.
     * @return ID for complex variation
     */
    public static String createVariationID(Variation[] variations) {
        StringBuilder builder = new StringBuilder();
        builder.append("Complex variation [").append(variations.length).append("]{");
        for (int i = 0; i < variations.length; i++) {
            builder.append(variations[i].getVariationID());
            if (i != variations.length - 1) {
                builder.append(", ");
            }
        }
        builder.append("}");
        return builder.toString();
    }

    @Override
    public Object currentValue(Object[] originalArguments) {
        Object[] values = new Object[variations.length];
        for (int i = 0; i < variations.length; i++) {
            values[i] = variations[i].applyModification(originalArguments);
        }
        return values;
    }

    @Override
    public Object[] applyModification(Object[] originalArguments) {
        Object[] arguments = originalArguments;
        for (Variation variation : variations) {
            arguments = variation.applyModification(arguments);
        }
        return arguments;
    }

    @Override
    public void revertModifications(Object[] modifiedArguments, Object previousValue) {
        Object[] values;
        if (previousValue instanceof Object[]) {
            values = (Object[]) previousValue;
        } else {
            throw new IllegalStateException();
        }
        for (int i = variations.length - 1; i >= 0; i--) {
            variations[i].revertModifications(modifiedArguments, values[i]);
        }
    }

    public Variation[] getVariations() {
        return variations;
    }

    public void setVariations(Variation[] variations) {
        this.variations = variations;
    }
}