Class Decimal

java.lang.Object

org.apache.derby.client.am.Decimal

public class Decimal
extends Object

Converters from fixed point decimal bytes to java.math.BigDecimal, double, or long.

Field Summary

Fields

Modifier and Type	Field	Description
private static final MessageUtil	msgutil
static final int	PACKED_DECIMAL	Packed Decimal representation
private static final int[][]	tenRadixMagnitude

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Decimal()

Method Summary

Modifier and Type	Method	Description
static final int	bigDecimalToPackedDecimalBytes(byte[] buffer, int offset, BigDecimal b, int declaredPrecision, int declaredScale)	Write a Java java.math.BigDecimal to packed decimal bytes.
private static final int[]	computeMagnitude(int[] input)	Compute the int array of magnitude from input value segments.
(package private) static BigDecimal	getBigDecimal(byte[] buffer, int offset, int precision, int scale)	Build a java.math.BigDecimal from a fixed point decimal byte representation.
(package private) static double	getDouble(byte[] buffer, int offset, int precision, int scale)	Build a Java double from a fixed point decimal byte representation.
(package private) static long	getLong(byte[] buffer, int offset, int precision, int scale)	Build a Java long from a fixed point decimal byte representation.
private static final int	packedNybblesToInt(byte[] buffer, int offset, int startNybble, int numberOfNybbles)	Convert a range of packed nybbles (up to 9 digits without overflow) to an int.
private static final long	packedNybblesToLong(byte[] buffer, int offset, int startNybble, int numberOfNybbles)	Convert a range of packed nybbles (up to 18 digits without overflow) to a long.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

PACKED_DECIMAL

public static final int PACKED_DECIMAL

Packed Decimal representation

See Also:

• Constant Field Values

msgutil

private static final MessageUtil msgutil

tenRadixMagnitude

private static final int[][] tenRadixMagnitude

Constructor Details

Decimal

private Decimal()

Method Details

packedNybblesToInt

private static final int packedNybblesToInt(byte[] buffer,
 int offset,
 int startNybble,
 int numberOfNybbles)

Convert a range of packed nybbles (up to 9 digits without overflow) to an int. Note that for performance purpose, it does not do array-out-of-bound checking.

packedNybblesToLong

private static final long packedNybblesToLong(byte[] buffer,
 int offset,
 int startNybble,
 int numberOfNybbles)

Convert a range of packed nybbles (up to 18 digits without overflow) to a long. Note that for performance purpose, it does not do array-out-of-bound checking.

computeMagnitude

private static final int[] computeMagnitude(int[] input)

Compute the int array of magnitude from input value segments.

getBigDecimal

static BigDecimal getBigDecimal(byte[] buffer,
 int offset,
 int precision,
 int scale)

Build a java.math.BigDecimal from a fixed point decimal byte representation.

Throws:

IllegalArgumentException - if the specified representation is not recognized.

getDouble

static double getDouble(byte[] buffer,
 int offset,
 int precision,
 int scale)

Build a Java double from a fixed point decimal byte representation.

Throws:

IllegalArgumentException - if the specified representation is not recognized.

getLong

static long getLong(byte[] buffer,
 int offset,
 int precision,
 int scale)

Build a Java long from a fixed point decimal byte representation.

Throws:

IllegalArgumentException - if the specified representation is not recognized.

ArithmeticException - if value is too large for a long

bigDecimalToPackedDecimalBytes

public static final int bigDecimalToPackedDecimalBytes(byte[] buffer,
 int offset,
 BigDecimal b,
 int declaredPrecision,
 int declaredScale)
                                                throws SqlException

Write a Java java.math.BigDecimal to packed decimal bytes.

Throws:

SqlException