*
* 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.]
*
* ---------------
* ExpressionFunctionReturnP1Number.java
* ---------------
* Author: Volker Berlin
*
* Created on 03.10.2005
*/
package smallsql.database;
abstract class ExpressionFunctionReturnP1Number extends ExpressionFunctionReturnP1 {
final boolean getBoolean() throws Exception{
return getDouble() != 0;
}
final int getInt() throws Exception {
return Utils.long2int(getLong());
}
final long getLong() throws Exception{
return Utils.double2long(getDouble());
}
final float getFloat() throws Exception {
return (float)getDouble();
}
MutableNumeric getNumeric() throws Exception{
if(param1.isNull()) return null;
switch(getDataType()){
case SQLTokenizer.INT:
return new MutableNumeric(getInt());
case SQLTokenizer.BIGINT:
return new MutableNumeric(getLong());
case SQLTokenizer.MONEY:
return new MutableNumeric(getMoney(), 4);
case SQLTokenizer.DECIMAL:
MutableNumeric num = param1.getNumeric();
num.floor();
return num;
case SQLTokenizer.DOUBLE:
return new MutableNumeric(getDouble());
default:
throw new Error();
}
}
long getMoney() throws Exception{
return Utils.doubleToMoney(getDouble());
}
String getString() throws Exception {
if(isNull()) return null;
return getObject().toString();
}
final int getDataType() {
return ExpressionArithmetic.getBestNumberDataType(param1.getDataType());
}
}