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/* __ *\
** ________ ___ / / ___ Scala API tests **
** / __/ __// _ | / / / _ | (c) 2003-2005, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.dbc.syntax;
import java.math.BigDecimal;
import java.math.BigInteger;
object DataTypeUtil {
final val java_lang_Integer_SIZE = 32;
final val java_lang_Long_SIZE = 64;
def boolean = new datatype.Boolean;
def tinyint = new datatype.ExactNumeric[Byte](dbc.DataType.BYTE) {
val precisionRadix = 2;
val precision = 8;
val signed = true;
val scale = 0;
}
def smallint = new datatype.ExactNumeric[Short](dbc.DataType.SHORT) {
val precisionRadix = 2;
val precision = 16;
val signed = true;
val scale = 0;
}
def integer = new datatype.ExactNumeric[Int](dbc.DataType.INT) {
val precisionRadix = 2;
val precision = 32;
val signed = true;
val scale = 0;
}
def bigint = new datatype.ExactNumeric[Long](dbc.DataType.LONG) {
val precisionRadix = 2;
val precision = 64;
val signed = true;
val scale = 0;
}
def numeric (_precision:Int): DataType = numeric(_precision,0);
def numeric (_precision:Int, _scale:Int): DataType =
Pair(datatype.Factory.bytePrecision(_precision,true,true),_scale == 0) match {
case Pair(bp,true) if (bp <= java_lang_Integer_SIZE) =>
new datatype.ExactNumeric[Int](DataType.INT) {
val precisionRadix = 10;
val precision = _precision;
val signed = true;
val scale = 0;
}
case Pair(bp,true) if (bp <= java_lang_Long_SIZE) =>
new datatype.ExactNumeric[Long](DataType.LONG) {
val precisionRadix = 10;
val precision = _precision;
val signed = true;
val scale = 0;
}
case Pair(_,true) =>
new datatype.ExactNumeric[BigInteger](DataType.BIG_INTEGER) {
val precisionRadix = 10;
val precision = _precision;
val signed = true;
val scale = 0;
}
case Pair(_,false) =>
new datatype.ExactNumeric[BigDecimal](DataType.BIG_DECIMAL) {
val precisionRadix = 10;
val precision = _precision;
val signed = true;
val scale = _scale;
}
}
def real = new datatype.ApproximateNumeric[Float](DataType.FLOAT) {
val precisionRadix = 2;
val precision = 64;
val signed = true;
}
def doublePrecision = new datatype.ApproximateNumeric[Double](DataType.DOUBLE) {
val precisionRadix = 2;
val precision = 128;
val signed = true;
}
def character (_length: Int) = new datatype.Character {
val length = _length;
}
def characterVarying (_length: Int) = new datatype.CharacterVarying {
def length = _length;
}
def characterLargeObject = new datatype.CharacterLargeObject;
}
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