Package uk.ac.starlink.fits
Class VariableFitsTableSerializer
- java.lang.Object
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- uk.ac.starlink.fits.StandardFitsTableSerializer
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- uk.ac.starlink.fits.VariableFitsTableSerializer
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- All Implemented Interfaces:
FitsTableSerializer
public class VariableFitsTableSerializer extends StandardFitsTableSerializer
FitsTableSerializer which can write variable array-valued columns using the 'P' or 'Q' TFORM formatting characters.- Since:
- 10 Jul 2008
- Author:
- Mark Taylor
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Constructor Summary
Constructors Constructor Description VariableFitsTableSerializer(FitsTableSerializerConfig config, uk.ac.starlink.table.StarTable table, uk.ac.starlink.table.StoragePolicy storagePolicy)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description CardImage[]
getHeader()
Returns header cards suitable for the HDU which will contain the table.void
set64BitMode(boolean useQ)
Sets whether this serializer should use the 'P' descriptor (32-bit addressing into the heap) or the 'Q' descriptor (64-bit addressing into the heap) for variable-length array columns.void
writeData(java.io.DataOutput out)
Writes the HDU data for the table to an output stream.-
Methods inherited from class uk.ac.starlink.fits.StandardFitsTableSerializer
getBadValue, getConfig, getDimensions, getFormatChar, getHealpixHeaders, getRowCount, writeDataOnly
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Constructor Detail
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VariableFitsTableSerializer
public VariableFitsTableSerializer(FitsTableSerializerConfig config, uk.ac.starlink.table.StarTable table, uk.ac.starlink.table.StoragePolicy storagePolicy) throws java.io.IOException
Constructor.- Parameters:
config
- FITS configurationtable
- table to writestoragePolicy
- policy for acquiring byte array scratch buffers- Throws:
java.io.IOException
- if it won't be possible to write the given table
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Method Detail
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set64BitMode
public void set64BitMode(boolean useQ)
Sets whether this serializer should use the 'P' descriptor (32-bit addressing into the heap) or the 'Q' descriptor (64-bit addressing into the heap) for variable-length array columns. Normally Q is only used if the heap is larger than 2^31.- Parameters:
useQ
- true for Q, false for P
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getHeader
public CardImage[] getHeader()
Description copied from interface:FitsTableSerializer
Returns header cards suitable for the HDU which will contain the table. Additional metadata and an END marker will be added after these cards, so the returned array must not contain the END card.- Specified by:
getHeader
in interfaceFitsTableSerializer
- Overrides:
getHeader
in classStandardFitsTableSerializer
- Returns:
- header cards
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writeData
public void writeData(java.io.DataOutput out) throws java.io.IOException
Description copied from interface:FitsTableSerializer
Writes the HDU data for the table to an output stream.- Specified by:
writeData
in interfaceFitsTableSerializer
- Overrides:
writeData
in classStandardFitsTableSerializer
- Parameters:
out
- destination stream- Throws:
java.io.IOException
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