org.javers.core.diff.custom.CustomToNativeAppenderAdapter Maven / Gradle / Ivy

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JaVers - object auditing and diff framework for Java

There is a newer version: 7.6.2

package org.javers.core.diff.custom;

import org.javers.core.diff.NodePair;
import org.javers.core.diff.appenders.PropertyChangeAppender;
import org.javers.core.diff.changetype.PropertyChange;
import org.javers.core.metamodel.type.JaversProperty;
import org.javers.core.metamodel.type.JaversType;

import java.util.Optional;

/**
 * @author bartosz walacik
 */
public class CustomToNativeAppenderAdapter implements PropertyChangeAppender {
    private final CustomPropertyComparator delegate;
    private final Class propertyJavaClass;

    public CustomToNativeAppenderAdapter(CustomPropertyComparator delegate, Class propertyJavaClass) {
        this.delegate = delegate;
        this.propertyJavaClass = propertyJavaClass;
    }

    @Override
    public boolean supports(JaversType propertyType) {
        return propertyType.getBaseJavaType().equals(propertyJavaClass);
    }

    @Override
    public C calculateChanges(NodePair pair, JaversProperty property) {
        T leftValue = (T)pair.getLeftPropertyValue(property);
        T rightValue = (T)pair.getRightPropertyValue(property);

        return delegate.compare(leftValue, rightValue, pair.createPropertyChangeMetadata(property), property).orElse(null);
    }

    @Override
    public int priority() {
        return HIGH_PRIORITY;
    }
}