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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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package org.apache.cayenne.exp.parser;
import org.apache.cayenne.exp.Expression;
import org.apache.cayenne.util.ConversionUtil;
/**
* @since 4.0
*/
public class ASTAbs extends ASTFunctionCall {
ASTAbs(int id) {
super(id, "ABS");
}
public ASTAbs(Expression expression) {
super(ExpressionParserTreeConstants.JJTABS, "ABS", expression);
}
@Override
protected Object evaluateSubNode(Object o, Object[] evaluatedChildren) throws Exception {
double n = ConversionUtil.toDouble(o, 0.0);
return Math.abs(n);
}
@Override
protected int getRequiredChildrenCount() {
return 1;
}
@Override
public Expression shallowCopy() {
return new ASTAbs(id);
}
}