Package com.sun.jna

Class IntegerType

java.lang.Object

java.lang.Number

com.sun.jna.IntegerType

All Implemented Interfaces:

NativeMapped, Serializable

Direct Known Subclasses:

BaseTSD.DWORD_PTR, BaseTSD.LONG_PTR, BaseTSD.ULONG_PTR, LibCAPI.size_t, LibCAPI.ssize_t, NativeLong, OaIdl.VARIANT_BOOL, Structure.FFIType.size_t, WinDef.BOOL, WinDef.CHAR, WinDef.DWORD, WinDef.DWORDLONG, WinDef.INT_PTR, WinDef.LONG, WinDef.LONGLONG, WinDef.SHORT, WinDef.UCHAR, WinDef.UINT, WinDef.UINT_PTR, WinDef.ULONG, WinDef.ULONGLONG, WinDef.USHORT, WinDef.WORD, XAttr.size_t, XAttr.ssize_t

public abstract class IntegerType
extends Number
implements NativeMapped

Represents a native integer value, which may have a platform-specific size (e.g. long on unix-based platforms). May optionally indicate an unsigned attribute, such that when a value is extracted into a larger-sized container (e.g. int retrieved via Number.longValue(), the value will be unsigned. Default behavior is signed.

Author:

wmeissner@gmail.com, twalljava@java.net

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
IntegerType(int size)	Create a zero-valued signed IntegerType.
IntegerType(int size, boolean unsigned)	Create a zero-valued optionally unsigned IntegerType.
IntegerType(int size, long value)	Create a signed IntegerType with the given value.
IntegerType(int size, long value, boolean unsigned)	Create an optionally signed IntegerType with the given value.

Method Summary

Modifier and Type	Method	Description
static int	compare(long v1, long v2)
static int	compare(IntegerType v1, long v2)	Compares a IntegerType value with a long one.
static <T extends IntegerType> int	compare(T v1, T v2)	Compares 2 derived IntegerType values - Note: a null value is considered greater than any non-null one (i.e., null values are "pushed" to the end of a sorted array / list of values)
double	doubleValue()
boolean	equals(Object rhs)
float	floatValue()
Object	fromNative(Object nativeValue, FromNativeContext context)	Convert the given native object into its Java representation using the given context.
int	hashCode()
int	intValue()
long	longValue()
Class<?>	nativeType()	Indicate the native type used by this converter.
void	setValue(long value)	Change the value for this data.
Object	toNative()	Convert this object into a supported native type.
String	toString()

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IntegerType

public IntegerType(int size)

Create a zero-valued signed IntegerType.

IntegerType

public IntegerType(int size,
                   boolean unsigned)

Create a zero-valued optionally unsigned IntegerType.

IntegerType

public IntegerType(int size,
                   long value)

Create a signed IntegerType with the given value.

IntegerType

public IntegerType(int size,
                   long value,
                   boolean unsigned)

Create an optionally signed IntegerType with the given value.

Method Detail

setValue

public void setValue(long value)

Change the value for this data.

Parameters:

value - value to set

toNative

public Object toNative()

Description copied from interface: NativeMapped

Convert this object into a supported native type.

Specified by:

toNative in interface NativeMapped

Returns:

Java representation of the original Java object converted to a native type.

fromNative

public Object fromNative(Object nativeValue,
                         FromNativeContext context)

Description copied from interface: NativeMapped

Convert the given native object into its Java representation using the given context.

Specified by:

fromNative in interface NativeMapped

Parameters:

nativeValue - Java representation of the native type to be converted.

context - Context in which the conversion is taking place.

Returns:

Converted object.

nativeType

public Class<?> nativeType()

Description copied from interface: NativeMapped

Indicate the native type used by this converter.

Specified by:

nativeType in interface NativeMapped

Returns:

Java class representation of the native type.

intValue

public int intValue()

Specified by:

intValue in class Number

longValue

public long longValue()

Specified by:

longValue in class Number

floatValue

public float floatValue()

Specified by:

floatValue in class Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class Number

equals

public boolean equals(Object rhs)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

compare

public static <T extends IntegerType> int compare(T v1,
                                                  T v2)

Compares 2 derived IntegerType values - Note: a null value is considered greater than any non-null one (i.e., null values are "pushed" to the end of a sorted array / list of values)

Type Parameters:

T - the derived integer type

Parameters:

v1 - The 1st value

v2 - The 2nd value

Returns:

0 if values are equal - including if both are null, negative if 1st value less than 2nd one, positive otherwise. Note: the comparison uses the longValue().

See Also:

compare(long, long)

compare

public static int compare(IntegerType v1,
                          long v2)

Compares a IntegerType value with a long one. Note: if the IntegerType value is null then it is consider greater than any long value.

Parameters:

v1 - The IntegerType value

v2 - The long value

Returns:

0 if values are equal, negative if 1st value less than 2nd one, positive otherwise. Note: the comparison uses the longValue().

See Also:

compare(long, long)

compare

public static final int compare(long v1,
                                long v2)