Java StringWriter for FastBit. More...

Classes
class	WriteHandle
	An auxiliary thread-safe class to hold file locks and buffers. More...

Public Member Functions
void	addCategories (String partition, String colname, String[] arr, String charsetName) throws FastBitStringWriterException
	Add String values with a small number of distinct choices. More...

void	addRow (final WriteHandle handler, String row) throws FastBitStringWriterException
	Add String values row by row. More...

synchronized void	addStringColumnToMetadata (String partitionDirectory, String columnName, String type) throws FastBitStringWriterException
	Add column info to existing index metadata. More...

void	addText (String partition, String colname, String[] arr, String charsetName) throws FastBitStringWriterException
	Add arbitrary string values. More...

synchronized void	createMetadata (String partitionDirectory, String columnName, String type, int rowCount) throws FastBitStringWriterException
	Create metadata for a data partition with a single column. More...

	FastBitStringWriter ()
	FastBitStringWriter constructor with default buffer size.

	FastBitStringWriter (int bufferLength)
	FastBitStringWriter constructor. More...

WriteHandle	getHandle (String partition, String colname, String charsetName) throws FastBitStringWriterException
	Create WriteHandle. More...

void	saveDictionary (final WriteHandle handler, final Set< String > keys, String fileName) throws FastBitStringWriterException
	Add dictionary strings to a .dic file. More...

Detailed Description

Java StringWriter for FastBit.

For a Java program to write string-valued data to a format required by FastBit. See java/tests/TestFastBitJava.java for an example of use.

Author: Andrey Kolchanov

Constructor & Destructor Documentation

gov.lbl.fastbit.FastBitStringWriter.FastBitStringWriter ( int bufferLength )

inline

FastBitStringWriter constructor.

Parameters

bufferLength

Member Function Documentation

void gov.lbl.fastbit.FastBitStringWriter.addCategories	(	String	partition,
		String	colname,
		String[]	arr,
		String	charsetName
	)		throws FastBitStringWriterException

inline

Add String values with a small number of distinct choices.

Parameters

partition
colname
arr
charsetName

Exceptions

FastBitStringWriterException

References gov.lbl.fastbit.FastBitStringWriter.addRow(), gov.lbl.fastbit.FastBitStringWriter.getHandle(), and gov.lbl.fastbit.FastBitStringWriter.saveDictionary().

void gov.lbl.fastbit.FastBitStringWriter.addRow	(	final WriteHandle	handler,
		String	row
	)		throws FastBitStringWriterException

inline

Add String values row by row.

Parameters

handler	The object to handle the actual write operation.
row	The content of the row to be written.

Exceptions

FastBitStringWriterException

Referenced by gov.lbl.fastbit.FastBitStringWriter.addCategories(), and gov.lbl.fastbit.FastBitStringWriter.addText().

synchronized void gov.lbl.fastbit.FastBitStringWriter.addStringColumnToMetadata	(	String	partitionDirectory,
		String	columnName,
		String	type
	)		throws FastBitStringWriterException

inline

Add column info to existing index metadata.

Parameters

partitionDirectory
columnName
type

Exceptions

FastBitStringWriterException

void gov.lbl.fastbit.FastBitStringWriter.addText	(	String	partition,
		String	colname,
		String[]	arr,
		String	charsetName
	)		throws FastBitStringWriterException

inline

Add arbitrary string values.

Parameters

partition
colname
arr
charsetName

Exceptions

FastBitStringWriterException

References gov.lbl.fastbit.FastBitStringWriter.addRow(), and gov.lbl.fastbit.FastBitStringWriter.getHandle().

synchronized void gov.lbl.fastbit.FastBitStringWriter.createMetadata	(	String	partitionDirectory,
		String	columnName,
		String	type,
		int	rowCount
	)		throws FastBitStringWriterException

inline

Create metadata for a data partition with a single column.

Parameters

partitionDirectory	Directory for the data partition
columnName	Column name. Also used as the data partition name.
type	Data type.
rowCount	Number of rows.

Exceptions

FastBitStringWriterException

WriteHandle gov.lbl.fastbit.FastBitStringWriter.getHandle	(	String	partition,
		String	colname,
		String	charsetName
	)		throws FastBitStringWriterException

inline

Create WriteHandle.

Parameters

partition
colname
charsetName

Returns

Exceptions

FastBitStringWriterException

Referenced by gov.lbl.fastbit.FastBitStringWriter.addCategories(), and gov.lbl.fastbit.FastBitStringWriter.addText().

void gov.lbl.fastbit.FastBitStringWriter.saveDictionary	(	final WriteHandle	handler,
		final Set< String >	keys,
		String	fileName
	)		throws FastBitStringWriterException

inline

Add dictionary strings to a .dic file.

Parameters

handler
keys
fileName

Exceptions

FastBitStringWriterException

Referenced by gov.lbl.fastbit.FastBitStringWriter.addCategories().

The documentation for this class was generated from the following file:

/Users/john/src/ibis/java/gov/lbl/fastbit/FastBitStringWriter.java



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Classes

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation