com.steptools.stdev

Class Primitives

java.lang.Object

com.steptools.stdev.Primitives

public class Primitives
extends Object

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

Field Summary

Fields

Modifier and Type	Field and Description
static PrimitiveDomain	BINARY Domain for EXPRESS BINARY type
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 Binary	NULL_BINARY Represents an unset value of type LOGICAL
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 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

Methods

Modifier and Type	Method and Description
static PrimitiveDomain	findDomain(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(Object val) Determines if the specified value is a null value.

Methods inherited from class java.lang.Object

clone, equals, finalize, 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 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

BINARY

public static final PrimitiveDomain BINARY

Domain for EXPRESS BINARY type

NULL_BINARY

public static final Binary NULL_BINARY

Represents an unset value of type LOGICAL

Method Detail

findDomain

public static PrimitiveDomain findDomain(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(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.