gov.nasa.gsfc.spdf.cdfj

Class GDR

java.lang.Object

gov.nasa.gsfc.spdf.cdfj.GDR

public class GDR
extends java.lang.Object

Class for modelling the Global Descriptor Record (GDR).

See Also:

section 2.3.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	position

Constructor Summary

Constructors

Constructor and Description
GDR()

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	get()
int	getSize()
void	setADRHead(long l) Signed 8-byte integer, big-endian byte ordering.The file offset of the first Attribute Descriptor Record (ADR).
void	setEof(long l) Signed 8-byte integer, big-endian byte ordering.The end-of-file (EOF) position in the dotCDF file.
void	setLastLeapSecondId(int n) Signed 4-byte integer, big-endian byte ordering.The date of the last entry in the leap secondtable (in YYYYMMDD form).
void	setNumAttr(int n) Signed 4-byte integer, big-endian byte ordering.The number of attributes in the CDF.
void	setNzVars(int n) Signed 4-byte integer, big-endian byte ordering.The number of zVariables in the CDF.
void	setZVDRHead(long l) Signed 8-byte integer, big-endian byte ordering.

Methods inherited from class java.lang.Object

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

Field Detail

position

protected long position

Constructor Detail

GDR

public GDR()

Method Detail

setZVDRHead

public void setZVDRHead(long l)

Signed 8-byte integer, big-endian byte ordering. The file offset of the first zVariable Descriptor Record (zVDR). The first zVDR contains a file offset to the next zVDR and so on. A zVDR will exist for each zVariable in the CDF. Because zVariables were not supported by CDF until CDF V2.2, prior to CDF V2.2 this field is undefined. Beginning with CDF V2.2 this field will contain either a file offset to the first zVDR or 0x0000000000000000 if the CDF contains no zVariables. The last zVDR will always contain 0x0000000000000000 for the file offset of the next zVDR (to indicate the end of the zVDRs

Parameters:

l -

setADRHead

public void setADRHead(long l)

Signed 8-byte integer, big-endian byte ordering.The file offset of the first Attribute Descriptor Record (ADR). The first ADR contains a file offset to the next ADR and so on. An ADR will exist for each attribute in the CDF. This field will contain 0x0000000000000000 if the CDF contains no attributes. Beginning with CDF V2.1 the last ADR will contain a file offset of 0x0000000000000000 for the file offset of the next ADR (to indicate the end of the ADRs).

Parameters:

l -

setEof

public void setEof(long l)

Signed 8-byte integer, big-endian byte ordering.The end-of-file (EOF) position in the dotCDF file. This is the file offset of the byte that is one beyond the last byte of the last internal record. (This value is also the total number of bytes used in the dotCDF file.)

Parameters:

l -

setNumAttr

public void setNumAttr(int n)

Signed 4-byte integer, big-endian byte ordering.The number of attributes in the CDF. This will correspond to the number of ADRs in the dotCDF file.

Parameters:

n -

setNzVars

public void setNzVars(int n)

Signed 4-byte integer, big-endian byte ordering.The number of zVariables in the CDF. This will correspond to the number of zVDRs in the dotCDF file.

Parameters:

n -

setLastLeapSecondId

public void setLastLeapSecondId(int n)

Signed 4-byte integer, big-endian byte ordering.The date of the last entry in the leap secondtable (in YYYYMMDD form). It is negative one (-1) for the previous version.A value of zero (0) is also accepted, which means a CDF was not created based on a leap second table. This field is applicable to CDFs with CDF_TIME_TT2000 data type

Parameters:

n -

get

public java.nio.ByteBuffer get()

getSize

public int getSize()