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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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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 ASTTrim extends ASTFunctionCall {
ASTTrim(int id) {
super(id, "TRIM");
}
public ASTTrim(Expression path) {
super(ExpressionParserTreeConstants.JJTTRIM, "TRIM", path);
}
@Override
protected String getExpressionOperator(int index) {
return null;
}
@Override
protected int getRequiredChildrenCount() {
return 1;
}
@Override
protected Object evaluateSubNode(Object o, Object[] evaluatedChildren) throws Exception {
String s1 = ConversionUtil.toString(o);
if (s1 == null) {
return null;
}
return s1.trim();
}
@Override
public int getType() {
return Expression.FUNCTION_CALL;
}
@Override
public Expression shallowCopy() {
return new ASTTrim(id);
}
}