com.blazebit.persistence.parser.util.ExpressionUtils Maven / Gradle / Ivy
/*
* Copyright 2014 - 2019 Blazebit.
*
* Licensed 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 under the License.
*/
package com.blazebit.persistence.parser.util;
import com.blazebit.persistence.parser.expression.Expression;
import com.blazebit.persistence.parser.expression.FunctionExpression;
/**
* @author Moritz Becker
* @since 1.2.0
*/
public class ExpressionUtils {
private ExpressionUtils() {
}
public static boolean isSizeFunction(Expression expression) {
if (expression instanceof FunctionExpression) {
return isSizeFunction((FunctionExpression) expression);
}
return false;
}
public static boolean isSizeFunction(FunctionExpression expression) {
return "SIZE".equalsIgnoreCase(expression.getFunctionName());
}
public static boolean isOuterFunction(FunctionExpression e) {
return "OUTER".equalsIgnoreCase(e.getFunctionName());
}
public static boolean isCustomFunctionInvocation(FunctionExpression e) {
return "FUNCTION".equalsIgnoreCase(e.getFunctionName());
}
public static boolean isCountFunction(Expression expression) {
if (expression instanceof FunctionExpression) {
return isCountFunction((FunctionExpression) expression);
}
return false;
}
public static boolean isCountFunction(FunctionExpression expr) {
return "COUNT".equalsIgnoreCase(expr.getFunctionName());
}
}