ariba.util.core
Class Arithmetic

java.lang.Object
  ariba.util.core.Arithmetic

public abstract class Arithmetic
extends Object

Arithmetic is an abstract class that encapsulates the idea of doing simple arithmetic operations on instances of the sub-types of java.lang.Number.

For example: IntegerArithmetic does integer arithmetic on the Numbers passed to it via the Number.intValue() method.

Nested Class Summary

static class

Arithmetic.Operation Enumeration class capturing binary operations on instances of java.lang.Number.

Field Summary

static Arithmetic	BigDecimalArithmetic
static int	BigDecimalType Represents the BigDecimal type.
static Arithmetic	BigIntegerArithmetic
static int	BigIntegerType Represents the BigInteger type.
static int	ByteType Represents the Byte type.
static Arithmetic	DoubleArithmetic
static int	DoubleType Represents the Double type.
static int	FloatType Represents the Float type.
static Arithmetic	IntegerArithmetic
static int	IntegerType Represents the Integer type.
static Arithmetic	LongArithmetic
static int	LongType Represents the Long type.
static int	ShortType Represents the Short type.

Constructor Summary

Arithmetic()

Method Summary

abstract Number	add(Number first, Number second) Adds first and second and returns the result.
static BigDecimal	asBigDecimal(Number number)
static BigInteger	asBigInteger(Number number)
abstract int	compare(Number first, Number second) Compares first and second and returns the result.
abstract Number	divide(Number first, Number second) Divides first by second and returns the result.
Number	evaluate(Number first, Arithmetic.Operation operation, Number second) Evaluates first and second with respect to operation which must be one of: OpAdd, OpSubtract, OpMultiply, OpDivide.
static Arithmetic	getArithmeticFromNumberType(int numberType) Returns the Arithmetic instance corresponding to the supplied numberType.
static int	getNumberType(Number number) Returns one of the constants representing
abstract Number	multiply(Number first, Number second) Multiplies first by second and returns the result.
static Number	negate(Number number)
abstract Number	subtract(Number first, Number second) Subtracts second from first and returns the result.

Methods inherited from class java.lang.Object

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

Field Detail

ByteType

public static final int ByteType

Represents the Byte type.

See Also:

Constant Field Values

ShortType

public static final int ShortType

Represents the Short type.

See Also:

Constant Field Values

IntegerType

public static final int IntegerType

Represents the Integer type.

See Also:

Constant Field Values

LongType

public static final int LongType

Represents the Long type.

See Also:

Constant Field Values

FloatType

public static final int FloatType

Represents the Float type.

See Also:

Constant Field Values

DoubleType

public static final int DoubleType

Represents the Double type.

See Also:

Constant Field Values

BigIntegerType

public static final int BigIntegerType

Represents the BigInteger type.

See Also:

Constant Field Values

BigDecimalType

public static final int BigDecimalType

Represents the BigDecimal type.

See Also:

Constant Field Values

IntegerArithmetic

public static final Arithmetic IntegerArithmetic

LongArithmetic

public static final Arithmetic LongArithmetic

DoubleArithmetic

public static final Arithmetic DoubleArithmetic

BigIntegerArithmetic

public static final Arithmetic BigIntegerArithmetic

BigDecimalArithmetic

public static final Arithmetic BigDecimalArithmetic

Constructor Detail

Arithmetic

public Arithmetic()

Method Detail

add

public abstract Number add(Number first,
                           Number second)

Adds first and second and returns the result.

subtract

public abstract Number subtract(Number first,
                                Number second)

Subtracts second from first and returns the result.

multiply

public abstract Number multiply(Number first,
                                Number second)

Multiplies first by second and returns the result.

divide

public abstract Number divide(Number first,
                              Number second)

Divides first by second and returns the result.

compare

public abstract int compare(Number first,
                            Number second)

Compares first and second and returns the result.

evaluate

public final Number evaluate(Number first,
                             Arithmetic.Operation operation,
                             Number second)

Evaluates first and second with respect to operation which must be one of: OpAdd, OpSubtract, OpMultiply, OpDivide.

asBigInteger

public static BigInteger asBigInteger(Number number)

asBigDecimal

public static BigDecimal asBigDecimal(Number number)

getNumberType

public static int getNumberType(Number number)

Returns one of the constants representing

getArithmeticFromNumberType

public static Arithmetic getArithmeticFromNumberType(int numberType)

Returns the Arithmetic instance corresponding to the supplied numberType.

negate

public static Number negate(Number number)