Class CsvTableWriter

All Implemented Interfaces:
Documented, DocumentedIOHandler, StarTableWriter

public class CsvTableWriter extends DocumentedStreamStarTableWriter
A StarTableWriter which outputs to Comma-Separated Value format. This format is readable by CsvTableBuilder.
Since:
21 Sep 2004
Author:
Mark Taylor (Starlink)
  • Constructor Details

    • CsvTableWriter

      public CsvTableWriter()
      Constructs a default CSV table writer. This doesn't write a header.
    • CsvTableWriter

      public CsvTableWriter(boolean writeHeader)
      Constructs a CSV table writer which optionally writes headers.
      Parameters:
      writeHeader - true iff you want the first output line to contain column names
  • Method Details

    • setWriteHeader

      @ConfigMethod(property="header", doc="<p>If true, the first line of the CSV output will be a header containing the column names; if false, no header line is written and all lines represent data rows.</p>", sequence=1) public void setWriteHeader(boolean writeHeader)
      Indicate whether an initial row containing column names should be written.
      Parameters:
      writeHeader - true iff you want the first output line to contain column names
    • getWriteHeader

      public boolean getWriteHeader()
      Indicates whether an initial row containing column names will be written.
      Returns:
      whether the first output line will contain column names
    • setMaxFieldChars

      @ConfigMethod(property="maxCell", doc="<p>Maximum width in characters of an output table cell. Cells longer than this will be truncated.</p>", example="160", sequence=2) public void setMaxFieldChars(int maxFieldChars)
      Sets a limit on the number of characters that will be written in a single field. Fields beyond this length will be truncated.
      Parameters:
      maxFieldChars - new limit
    • getMaxFieldChars

      public int getMaxFieldChars()
      Returns the limit on the number of characters that will be written in a single field. Fields beyond this length will be truncated.
      Returns:
      current limit
    • getFormatName

      public String getFormatName()
      Returns "CSV" or "CSV-noheader".
      Returns:
      a short string identifying the output format of this writer
    • getMimeType

      public String getMimeType()
      Description copied from interface: StarTableWriter
      Returns a string suitable for use as the value of a MIME Content-Type header. If no suitable MIME type is available or known, one of "application/octet-stream" (for binary formats) or "text/plain" for ASCII ones) is recommended.
      Returns:
      MIME content type
    • docIncludesExample

      public boolean docIncludesExample()
      Description copied from interface: DocumentedIOHandler
      Indicates whether the serialization of some (short) example table should be added to the user documentation for this handler. Binary formats, or instances for which the Documented.getXmlDescription() method already includes some example output, should return false.
      Returns:
      true if the user documentation would benefit from the addition of an example serialization
    • getXmlDescription

      public String getXmlDescription()
      Description copied from interface: Documented
      Returns user-directed documentation in XML format.

      The output should be a sequence of one or more <P> elements, using XHTML-like XML. Since rendering may be done in a number of contexts however, use of the full range of XHTML elements is discouraged. Where possible, the content should stick to simple markup such as the elements P, A, UL, OL, LI, DL, DT, DD EM, STRONG, I, B, CODE, TT, PRE.

      Returns:
      XML description of this object
    • writeStarTable

      public void writeStarTable(StarTable table, OutputStream ostrm) throws IOException
      Description copied from interface: StarTableWriter
      Writes a StarTable object to a given output stream. The implementation can assume that out is suitable for direct writing (for instance it should not normally wrap it in a BufferedOutputStream), and should not close it at the end of the call.

      Not all table writers are capable of writing to a stream; an implementation may throw a TableFormatException to indicate that it cannot do so.

      Parameters:
      table - the table to write
      ostrm - the output stream to which startab should be written
      Throws:
      IOException - if there is some I/O error
    • getStarTableWriters

      public static StarTableWriter[] getStarTableWriters()
      Returns a selection of useful CsvTableWriters.
      Returns:
      array containing one writer with headers and one without