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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.searchlib.expression;
import com.yahoo.vespa.objects.Deserializer;
import com.yahoo.vespa.objects.ObjectVisitor;
import com.yahoo.vespa.objects.Serializer;
/**
* This function decompose two-dimensonal zcurve values into x and y values.
*
* @author baldersheim
*/
public class ZCurveFunctionNode extends UnaryFunctionNode {
public static enum Dimension {
X(0),
Y(1);
private final int id;
private Dimension(int id) {
this.id = id;
}
private static Dimension valueOf(int id) {
for (Dimension dim : values()) {
if (id == dim.id) {
return dim;
}
}
return null;
}
}
public static final int classId = registerClass(0x4000 + 139, ZCurveFunctionNode.class);
private Dimension dim = Dimension.X;
@SuppressWarnings("UnusedDeclaration")
public ZCurveFunctionNode() {
// used by deserializer
}
public ZCurveFunctionNode(ExpressionNode arg, Dimension dimension) {
addArg(arg);
dim = dimension;
}
/**
* Obtain the predefined bucket list of this bucket expression
*
* @return what part of the time you have requested
*/
public final Dimension getDimension() {
return dim;
}
@Override
protected int onGetClassId() {
return classId;
}
@Override
protected void onSerialize(Serializer buf) {
super.onSerialize(buf);
buf.putByte(null, (byte)dim.id);
}
@Override
protected void onDeserialize(Deserializer buf) {
super.onDeserialize(buf);
int b = buf.getByte(null);
dim = Dimension.valueOf(b);
}
@Override
protected boolean equalsUnaryFunction(UnaryFunctionNode obj) {
return dim == ((ZCurveFunctionNode)obj).dim;
}
@Override
public ZCurveFunctionNode clone() {
ZCurveFunctionNode obj = (ZCurveFunctionNode)super.clone();
obj.dim = dim;
return obj;
}
@Override
public void visitMembers(ObjectVisitor visitor) {
super.visitMembers(visitor);
visitor.visit("dimension", dim);
}
}
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