com.steptools.stdev
Class Primitives

java.lang.Object
  com.steptools.stdev.Primitives

public class Primitives
extends java.lang.Object

Constants to represent the domains and unset values of EXPRESS primitives.

Field Summary

static PrimitiveDomain	BOOLEAN Domain for EXPRESS BOOLEAN type
static PrimitiveDomain	INTEGER Domain for EXPRESS INTEGER type
static PrimitiveDomain	LOGICAL Domain for EXPRESS LOGICAL type
static ExpBoolean	NULL_BOOLEAN Represents an unset value of type BOOLEAN
static int	NULL_INTEGER Represents an unset value of type INTEGER
static Logical	NULL_LOGICAL Represents an unset value of type LOGICAL
static double	NULL_REAL Represents an unset value of type REAL
static java.lang.String	NULL_STRING Represents an unset value of type STRING
static PrimitiveDomain	REAL Domain for EXPRESS REAL type
static PrimitiveDomain	STRING Domain for EXPRESS STRING type

Method Summary

static PrimitiveDomain	findDomain(java.lang.Class cls) Finds a Domain for a primitive corresponding to a class
static boolean	isNull(double val) Determines if the specified value is a null value.
static boolean	isNull(int val) Determines if the specified value is a null value.
static boolean	isNull(java.lang.Object val) Determines if the specified value is a null value.

Methods inherited from class java.lang.Object

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

Field Detail

BOOLEAN

public static final PrimitiveDomain BOOLEAN

Domain for EXPRESS BOOLEAN type

NULL_BOOLEAN

public static final ExpBoolean NULL_BOOLEAN

Represents an unset value of type BOOLEAN

STRING

public static final PrimitiveDomain STRING

Domain for EXPRESS STRING type

NULL_STRING

public static final java.lang.String NULL_STRING

Represents an unset value of type STRING

REAL

public static final PrimitiveDomain REAL

Domain for EXPRESS REAL type

NULL_REAL

public static final double NULL_REAL

Represents an unset value of type REAL

See Also:

Constant Field Values

INTEGER

public static final PrimitiveDomain INTEGER

Domain for EXPRESS INTEGER type

NULL_INTEGER

public static final int NULL_INTEGER

Represents an unset value of type INTEGER

See Also:

Constant Field Values

LOGICAL

public static final PrimitiveDomain LOGICAL

Domain for EXPRESS LOGICAL type

NULL_LOGICAL

public static final Logical NULL_LOGICAL

Represents an unset value of type LOGICAL

Method Detail

findDomain

public static PrimitiveDomain findDomain(java.lang.Class cls)
                                  throws DomainNotFoundException

Finds a Domain for a primitive corresponding to a class

Parameters:

cls - The class to get the domain for.

Throws:

DomainNotFoundException

isNull

public static boolean isNull(java.lang.Object val)

Determines if the specified value is a null value. For most types, this is simply done by looking if val==null. For integers and real values, we have a wrapper, which may itself contain a null value

Returns:

true if the value is null/unset, false otherwise.

isNull

public static boolean isNull(int val)

Determines if the specified value is a null value.

Returns:

true if the value is null/unset, false otherwise.

isNull

public static boolean isNull(double val)

Determines if the specified value is a null value.

Returns:

true if the value is null/unset, false otherwise.