*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* ExpressionFunctionAbs.java
* ---------------
* Author: Volker Berlin
*
*/
package smallsql.database;
class ExpressionFunctionAbs extends ExpressionFunctionReturnP1 {
int getFunction(){ return SQLTokenizer.ABS; }
boolean getBoolean() throws Exception{
return getDouble() != 0;
}
int getInt() throws Exception{
return Math.abs( param1.getInt() );
}
long getLong() throws Exception{
return Math.abs( param1.getLong() );
}
float getFloat() throws Exception{
return Math.abs( param1.getFloat() );
}
double getDouble() throws Exception{
return Math.abs( param1.getDouble() );
}
long getMoney() throws Exception{
return Math.abs( param1.getMoney() );
}
MutableNumeric getNumeric() throws Exception{
if(param1.isNull()) return null;
MutableNumeric num = param1.getNumeric();
if(num.signum < 0) num.signum = 1;
return num;
}
Object getObject() throws Exception{
if(param1.isNull()) return null;
Object para1 = param1.getObject();
switch(param1.getDataType()){
case SQLTokenizer.DOUBLE:
double dValue = ((Double)para1).doubleValue();
return (dValue<0) ? new Double(-dValue) : para1;
case SQLTokenizer.INT:
int iValue = ((Number)para1).intValue();
return (iValue<0) ? new Integer(-iValue) : para1;
default: throw createUnspportedDataType(param1.getDataType());
}
}
String getString() throws Exception{
Object obj = getObject();
if(obj == null) return null;
return obj.toString();
}
}