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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.update;
import com.yahoo.document.DataType;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.serialization.DocumentUpdateWriter;
/**
* <p>Value update that represents clearing a field. Clearing a field mean removing it.</p>
* @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
*/
public class ClearValueUpdate extends ValueUpdate {
public ClearValueUpdate() {
super(ValueUpdateClassID.CLEAR);
}
@Override
public FieldValue applyTo(FieldValue fval) {
return null;
}
@Override
protected void checkCompatibility(DataType fieldType) {
// empty
}
@Override
public FieldValue getValue() {
return null;
}
@Override
public void setValue(FieldValue value) {
// empty
}
@Override
public void serialize(DocumentUpdateWriter data, DataType superType) {
data.write(this, superType);
}
}
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