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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.select.rule;
import com.yahoo.document.BucketIdFactory;
import com.yahoo.document.select.BucketSet;
import com.yahoo.document.select.Context;
import com.yahoo.document.select.Result;
import com.yahoo.document.select.Visitor;
/**
* @author Simon Thoresen Hult
*/
public class NegationNode implements ExpressionNode {
private ExpressionNode node;
public NegationNode(ExpressionNode node) {
this.node = node;
}
public ExpressionNode getNode() {
return node;
}
public NegationNode setNode(ExpressionNode node) {
this.node = node;
return this;
}
@Override
public BucketSet getBucketSet(BucketIdFactory factory) {
return null;
}
@Override
public Object evaluate(Context context) {
return Result.invert(Result.toResult(node.evaluate(context)));
}
@Override
public void accept(Visitor visitor) {
visitor.visit(this);
}
@Override
public String toString() {
return "not " + node;
}
}
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