Package uk.ac.starlink.ttools.example

Class AllWiseAsciiStarTable

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, uk.ac.starlink.table.StarTable
    public class AllWiseAsciiStarTable
extends uk.ac.starlink.table.formats.StreamStarTable
    StarTable implementation which can read data from the AllWise data release. At time of writing these files are available from http://irsadist.ipac.caltech.edu/wise-allwise/. The files are formatted as pipe-separated ASCII, and optionally compressed. The metadata is stored in an external schema table file.
    Since:
    6 Feb 2014
    Author:
    Mark Taylor

    • Field Summary

      • Fields inherited from class uk.ac.starlink.table.formats.StreamStarTable

        END

    • Constructor Summary

      Constructors 
      Constructor Description
      AllWiseAsciiStarTable​(uk.ac.starlink.util.DataSource datsrc, java.net.URL schemaUrl, long nrow)
      Constructor.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected uk.ac.starlink.table.formats.RowEvaluator.Metadata obtainMetadata()
      Obtains metadata for the table by reading the schema provided at construction time.
      protected java.util.List<java.lang.String> readRow​(java.io.PushbackInputStream in)  
      protected uk.ac.starlink.table.formats.RowEvaluator.Metadata readSchema​(uk.ac.starlink.util.DataSource datsrc)
      Given a PostgreSQL/2MASS-type schema file, works out what the column metadata will look like for each column of the table.

      • Methods inherited from class uk.ac.starlink.table.formats.StreamStarTable

        getColumnCount, getColumnInfo, getInputStream, getRowCount, getRowSequence, init

      • Methods inherited from class uk.ac.starlink.table.AbstractStarTable

        checkedLongToInt, close, getCell, getColumnAuxDataInfos, getName, getParameters, getRow, getRowAccess, getRowSplittable, getURL, isRandom, setName, setParameters, setURL

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface uk.ac.starlink.table.StarTable

        getParameterByName, setParameter

    • Constructor Detail

      • AllWiseAsciiStarTable

        public AllWiseAsciiStarTable​(uk.ac.starlink.util.DataSource datsrc,
                             java.net.URL schemaUrl,
                             long nrow)
                      throws java.io.IOException
        Constructor. You have to supply the number of rows that getRowCount will report.
        Parameters:
        datsrc - input data source
        schemaUrl - URL for 'schema' table which describes data types
        nrow - reported number of rows in table, -1 if unknown
        Throws:
        java.io.IOException

    • Method Detail

      • readRow

        protected java.util.List<java.lang.String> readRow​(java.io.PushbackInputStream in)
                                            throws uk.ac.starlink.table.TableFormatException,
                                                   java.io.IOException
        Specified by:
        readRow in class uk.ac.starlink.table.formats.StreamStarTable
        Throws:
        uk.ac.starlink.table.TableFormatException
        java.io.IOException

      • obtainMetadata

        protected uk.ac.starlink.table.formats.RowEvaluator.Metadata obtainMetadata()
                                                                     throws java.io.IOException
        Obtains metadata for the table by reading the schema provided at construction time.
        Specified by:
        obtainMetadata in class uk.ac.starlink.table.formats.StreamStarTable
        Throws:
        java.io.IOException

      • readSchema

        protected uk.ac.starlink.table.formats.RowEvaluator.Metadata readSchema​(uk.ac.starlink.util.DataSource datsrc)
                                                                 throws java.io.IOException
        Given a PostgreSQL/2MASS-type schema file, works out what the column metadata will look like for each column of the table.
        Parameters:
        datsrc - data source for schema file
        Returns:
        metadata object
        Throws:
        java.io.IOException