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// Copyright Yahoo. 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.CollectionDataType;
import com.yahoo.document.DataType;
import com.yahoo.document.datatypes.CollectionFieldValue;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.serialization.DocumentUpdateWriter;
/**
* <p>Value update representing a removal of a value (and its associated weight, if any)
* from a multi-valued data type.</p>
* Deprecated: Use RemoveFieldPathUpdate instead.
*
* @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
*/
public class RemoveValueUpdate extends ValueUpdate {
protected FieldValue value;
public RemoveValueUpdate(FieldValue value) {
super(ValueUpdateClassID.REMOVE);
this.value = value;
}
/** Sets the key this should remove */
public FieldValue getValue() { return value; }
public void setValue(FieldValue value) { this.value=value; }
@Override
public FieldValue applyTo(FieldValue fval) {
if (fval instanceof CollectionFieldValue) {
CollectionFieldValue val = (CollectionFieldValue) fval;
val.removeValue(value);
}
return fval;
}
@Override
protected void checkCompatibility(DataType fieldType) {
if (!(fieldType instanceof CollectionDataType)) {
throw new UnsupportedOperationException("Expected collection, got " + fieldType.getName() + ".");
}
fieldType = ((CollectionDataType)fieldType).getNestedType();
if (value != null && !value.getDataType().equals(fieldType)) {
throw new IllegalArgumentException("Expected " + fieldType.getName() + ", got " +
value.getDataType().getName());
}
}
@Override
public void serialize(DocumentUpdateWriter data, DataType superType) {
data.write(this, superType);
}
@Override
public boolean equals(Object o) {
return o instanceof RemoveValueUpdate && super.equals(o) && value.equals(((RemoveValueUpdate) o).value);
}
@Override
public int hashCode() {
return super.hashCode() + value.hashCode();
}
@Override
public String toString() {
return super.toString() + " " + value;
}
}
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