Package dap4.core.util

Class CoreTypeFcns

java.lang.Object

dap4.core.util.CoreTypeFcns

public abstract class CoreTypeFcns
extends Object

Constructor Summary

Constructors

Constructor	Description
CoreTypeFcns()

Method Summary

Modifier and Type	Method	Description
static Object	attributeConvert(DapType type, Object value)	Force an attribute value (typically string) to match a given basetype
static Object	createVector(TypeSort type, long count)
static long	forceRange(TypeSort basetype, long value)	Force a numeric value to be in a specified range Only defined for simple integers (ValueClass LONG) WARNING: unsigned values are forced into the signed size, but the proper bit pattern is maintained.
static Object	get(DapType type, Object v, int n)
static Object	get(TypeSort sort, ByteBuffer b, int n)
static int	getJavaSize(TypeSort atomtype)
protected static long	minmax(long value, long min, long max)	Peg a value to either the min or max depending on sign.
static void	put(TypeSort sort, Object v, int n, Object value)
static int	putVector(TypeSort sort, Object v, int offset, Object vec)

Methods inherited from class java.lang.Object

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

Constructor Detail

CoreTypeFcns

public CoreTypeFcns()

Method Detail

attributeConvert

public static Object attributeConvert(DapType type,
                                      Object value)

Force an attribute value (typically string) to match a given basetype

Parameters:

type - expected type

value - actual value

Returns:

the value as made to conform to the expected type

getJavaSize

public static int getJavaSize(TypeSort atomtype)

forceRange

public static long forceRange(TypeSort basetype,
                              long value)

Force a numeric value to be in a specified range Only defined for simple integers (ValueClass LONG) WARNING: unsigned values are forced into the signed size, but the proper bit pattern is maintained. The term "force" means that if the value is outside the typed min/max values, it is pegged to the min or max value depending on the sign. Note that truncation is not used.

Parameters:

basetype - the type to force value to in range

value - the value to force

Returns:

forced value

Throws:

ConversionException - if forcing is not possible

minmax

protected static long minmax(long value,
                             long min,
                             long max)

Peg a value to either the min or max depending on sign.

Parameters:

value - the value to peg

min - peg to this if value is < min

max - peg to this if value is > max

Returns:

pegg'ed value

get

public static Object get(DapType type,
                         Object v,
                         int n)

put

public static void put(TypeSort sort,
                       Object v,
                       int n,
                       Object value)

putVector

public static int putVector(TypeSort sort,
                            Object v,
                            int offset,
                            Object vec)

get

public static Object get(TypeSort sort,
                         ByteBuffer b,
                         int n)

createVector

public static Object createVector(TypeSort type,
                                  long count)