uk.ac.starlink.table.formats
Class IpacTableWriter

java.lang.Object
  uk.ac.starlink.table.StreamStarTableWriter
      uk.ac.starlink.table.formats.AbstractTextTableWriter
          uk.ac.starlink.table.formats.IpacTableWriter

All Implemented Interfaces:

StarTableWriter

public class IpacTableWriter
extends AbstractTextTableWriter

A StarTableWriter which writes to the IPAC text format. The data format is defined at http://irsa.ipac.caltech.edu/applications/DDGEN/Doc/ipac_tbl.html.

Since:

20 Sep 2012

Field Summary

static String

NULL String representation for null values.

Constructor Summary

IpacTableWriter()
Constructor.

Method Summary

String	formatValue(Object val, ValueInfo info, int width) Formats a data value for output.
String	getFormatName() Returns "IPAC".
protected int	getMaximumParameterLength() The comments parameter may be many lines long.
int	getMaxWidth() Returns the maximum width for a given column.
String	getMimeType() Returns "text/plain".
int	getMinNameWidth(ColumnInfo info) Returns the minimum width required to output the actual characters of the name for a given column.
boolean	looksLikeFile(String location) Returns true for files with extension ".ipac" or ".tbl".
void	printColumnHeads(OutputStream out, int[] colwidths, ColumnInfo[] cinfos) Outputs headings for the table columns.
protected void	printLine(OutputStream out, int[] colwidths, String[] data) Outputs a line of table data.
protected void	printParam(OutputStream out, String name, String value, Class clazz) Outputs a parameter and its value.
protected void	printSeparator(OutputStream out, int[] colwidths) Outputs a decorative separator line, of the sort you might find between the column headings and the table data.

Methods inherited from class uk.ac.starlink.table.formats.AbstractTextTableWriter

getBytes, getSampledRows, getWriteParameters, setWriteParameters, writeStarTable

Methods inherited from class uk.ac.starlink.table.StreamStarTableWriter

writeStarTable

Methods inherited from class java.lang.Object

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

Field Detail

NULL

public static String NULL

String representation for null values.

Constructor Detail

IpacTableWriter

public IpacTableWriter()

Constructor.

Method Detail

getFormatName

public String getFormatName()

Returns "IPAC".

Specified by:

getFormatName in interface StarTableWriter

Overrides:

getFormatName in class AbstractTextTableWriter

Returns:

"text"

getMimeType

public String getMimeType()

Returns "text/plain".

Specified by:

getMimeType in interface StarTableWriter

Overrides:

getMimeType in class AbstractTextTableWriter

Returns:

MIME content type

looksLikeFile

public boolean looksLikeFile(String location)

Returns true for files with extension ".ipac" or ".tbl".

Parameters:

location - the location name (probably filename)

Returns:

true iff it looks like a file this writer would normally write

getMaxWidth

public int getMaxWidth()

Description copied from class: AbstractTextTableWriter

Returns the maximum width for a given column. Values longer than this may be truncated.

Specified by:

getMaxWidth in class AbstractTextTableWriter

Returns:

maximum permitted column width in characters

getMinNameWidth

public int getMinNameWidth(ColumnInfo info)

Description copied from class: AbstractTextTableWriter

Returns the minimum width required to output the actual characters of the name for a given column. Padding applied subsequently by this object's AbstractTextTableWriter.printColumnHeads(java.io.OutputStream, int[], uk.ac.starlink.table.ColumnInfo[]) method does not need to be included.

Overrides:

getMinNameWidth in class AbstractTextTableWriter

Parameters:

info - column metadata

Returns:

minimum number of characters required for column title

formatValue

public String formatValue(Object val,
                          ValueInfo info,
                          int width)

Description copied from class: AbstractTextTableWriter

Formats a data value for output.

Specified by:

formatValue in class AbstractTextTableWriter

Parameters:

val - the value

info - the metadata object describing val's type

width - maximum preferred width into which the value should be formatted

Returns:

formatted string meaning value, preferably no longer than width characters

printColumnHeads

public void printColumnHeads(OutputStream out,
                             int[] colwidths,
                             ColumnInfo[] cinfos)
                      throws IOException

Description copied from class: AbstractTextTableWriter

Outputs headings for the table columns.

Specified by:

printColumnHeads in class AbstractTextTableWriter

Parameters:

out - stream to write into

colwidths - column widths in characters

cinfos - array of column headings

Throws:

IOException

printLine

protected void printLine(OutputStream out,
                         int[] colwidths,
                         String[] data)
                  throws IOException

Description copied from class: AbstractTextTableWriter

Outputs a line of table data.

Specified by:

printLine in class AbstractTextTableWriter

Parameters:

out - stream to write into

colwidths - column widths in characters

data - array of strings to be output, one per column

Throws:

IOException

printSeparator

protected void printSeparator(OutputStream out,
                              int[] colwidths)

Description copied from class: AbstractTextTableWriter

Outputs a decorative separator line, of the sort you might find between the column headings and the table data.

Specified by:

printSeparator in class AbstractTextTableWriter

Parameters:

out - stream to write into

colwidths - column widths in characters

printParam

protected void printParam(OutputStream out,
                          String name,
                          String value,
                          Class clazz)
                   throws IOException

Description copied from class: AbstractTextTableWriter

Outputs a parameter and its value.

Specified by:

printParam in class AbstractTextTableWriter

Parameters:

out - stream to write into

name - parameter name

value - formatted parameter value

clazz - type of value

Throws:

IOException

getMaximumParameterLength

protected int getMaximumParameterLength()

The comments parameter may be many lines long.

Overrides:

getMaximumParameterLength in class AbstractTextTableWriter

Returns:

maximum length for output string parameters