/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * 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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.sql.functions.math;
import java.math.BigDecimal;
import com.orientechnologies.orient.core.sql.functions.OSQLFunctionConfigurableAbstract;
/**
* Abstract class for math function.
*
* @author Luca Garulli (l.garulli--at--orientechnologies.com)
*
*/
public abstract class OSQLFunctionMathAbstract extends OSQLFunctionConfigurableAbstract {
public OSQLFunctionMathAbstract(String iName, int iMinParams, int iMaxParams) {
super(iName, iMinParams, iMaxParams);
}
protected Number getContextValue(Object iContext, final Class<? extends Number> iClass) {
if (iClass != iContext.getClass()) {
// CHANGE TYPE
if (iClass == Long.class)
iContext = new Long(((Number) iContext).longValue());
else if (iClass == Short.class)
iContext = new Short(((Number) iContext).shortValue());
else if (iClass == Float.class)
iContext = new Float(((Number) iContext).floatValue());
else if (iClass == Double.class)
iContext = new Double(((Number) iContext).doubleValue());
}
return (Number) iContext;
}
protected Class<? extends Number> getClassWithMorePrecision(final Class<? extends Number> iClass1,
final Class<? extends Number> iClass2) {
if (iClass1 == iClass2)
return iClass1;
if (iClass1 == Integer.class
&& (iClass2 == Long.class || iClass2 == Float.class || iClass2 == Double.class || iClass2 == BigDecimal.class))
return iClass2;
else if (iClass1 == Long.class && (iClass2 == Float.class || iClass2 == Double.class || iClass2 == BigDecimal.class))
return iClass2;
else if (iClass1 == Float.class && (iClass2 == Double.class || iClass2 == BigDecimal.class))
return iClass2;
return iClass1;
}
@Override
public boolean aggregateResults() {
return configuredParameters.length == 1;
}
@Override
public boolean shouldMergeDistributedResult() {
return true;
}
}