*
* 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.]
*
* ---------------
* ExpressionFunctionReturnFloat.java
* ---------------
* Author: Volker Berlin
*
*/
package smallsql.database;
abstract class ExpressionFunctionReturnFloat extends ExpressionFunction {
boolean isNull() throws Exception{
return param1.isNull();
}
final boolean getBoolean() throws Exception{
return getDouble() != 0;
}
final int getInt() throws Exception{
return (int)getDouble();
}
final long getLong() throws Exception{
return (long)getDouble();
}
final float getFloat() throws Exception{
return (float)getDouble();
}
long getMoney() throws Exception{
return Utils.doubleToMoney(getDouble());
}
final MutableNumeric getNumeric() throws Exception{
if(isNull()) return null;
double value = getDouble();
if(Double.isInfinite(value) || Double.isNaN(value))
return null;
return new MutableNumeric(value);
}
final Object getObject() throws Exception{
if(isNull()) return null;
return new Double(getDouble());
}
final String getString() throws Exception{
Object obj = getObject();
if(obj == null) return null;
return obj.toString();
}
final int getDataType() {
return SQLTokenizer.FLOAT;
}
}