Class CdfStarTable

java.lang.Object
uk.ac.starlink.table.AbstractStarTable
uk.ac.starlink.cdf.CdfStarTable
All Implemented Interfaces:
Closeable, AutoCloseable, uk.ac.starlink.table.StarTable
public class CdfStarTable extends uk.ac.starlink.table.AbstractStarTable
StarTable implementation for CDF files.
Since:
24 Jun 2013
Author:
Mark Taylor

  • Constructor Summary

    Constructors
    Constructor
    Description
    CdfStarTable(uk.ac.bristol.star.cdf.CdfContent content, CdfTableProfile profile, uk.ac.bristol.star.cdf.Variable dependVar)
    Constructor.

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    getCell(long irow, int icol)
     
    int
    getColumnCount()
     
    uk.ac.starlink.table.ColumnInfo
    getColumnInfo(int icol)
     
    uk.ac.starlink.table.RowAccess
    getRowAccess()
     
    long
    getRowCount()
     
    uk.ac.starlink.table.RowSequence
    getRowSequence()
     
    static String
    getStringEntry(uk.ac.bristol.star.cdf.VariableAttribute att, uk.ac.bristol.star.cdf.Variable var)
    Gets a variable's attribute value expected to be of string type.
    boolean
    isRandom()
     

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

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

    Methods inherited from class Object

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

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

    getParameterByName, setParameter

  • Constructor Details

    • CdfStarTable

      public CdfStarTable(uk.ac.bristol.star.cdf.CdfContent content, CdfTableProfile profile, uk.ac.bristol.star.cdf.Variable dependVar) throws IOException
      Constructor.

      The optional dependVar parameter provides an effective grouping of columns, and corresponds to the DEPEND_0 variable attribute defined by the ISTP Metadata Guidelines. CDF files contain multiple variables that are not necessarily all columns of the same table; at least within the ISTP guidelines a table is effectively defined by an independent epoch variable and a number of other variables depending on that (and thus presumably having the same number of values/rows). This interpretation is not exactly explicit in ISTP, but it looks like our best bet for turning CDF content into a thing or things that look like StarTables. If dependVar is null, we just have to assume that all the variables are effectively columns in the same table. In case that they don't all have the same multiplicity, just guess something and issue a warning.

      Parameters:
      content - CDF data content object
      profile - parameterisation of how CDFs should get turned into StarTables
      dependVar - independent variable on which other columns depend, or null
      Throws:
      IOException - in case of error

  • Method Details

    • getColumnCount

      public int getColumnCount()
      Specified by:
      getColumnCount in interface uk.ac.starlink.table.StarTable
      Specified by:
      getColumnCount in class uk.ac.starlink.table.AbstractStarTable

    • getRowCount

      public long getRowCount()
      Specified by:
      getRowCount in interface uk.ac.starlink.table.StarTable
      Specified by:
      getRowCount in class uk.ac.starlink.table.AbstractStarTable

    • getColumnInfo

      public uk.ac.starlink.table.ColumnInfo getColumnInfo(int icol)
      Specified by:
      getColumnInfo in interface uk.ac.starlink.table.StarTable
      Specified by:
      getColumnInfo in class uk.ac.starlink.table.AbstractStarTable

    • isRandom

      public boolean isRandom()
      Specified by:
      isRandom in interface uk.ac.starlink.table.StarTable
      Overrides:
      isRandom in class uk.ac.starlink.table.AbstractStarTable

    • getCell

      public Object getCell(long irow, int icol) throws IOException
      Specified by:
      getCell in interface uk.ac.starlink.table.StarTable
      Overrides:
      getCell in class uk.ac.starlink.table.AbstractStarTable
      Throws:
      IOException

    • getRowSequence

      public uk.ac.starlink.table.RowSequence getRowSequence() throws IOException
      Specified by:
      getRowSequence in interface uk.ac.starlink.table.StarTable
      Specified by:
      getRowSequence in class uk.ac.starlink.table.AbstractStarTable
      Throws:
      IOException

    • getRowAccess

      public uk.ac.starlink.table.RowAccess getRowAccess() throws IOException
      Specified by:
      getRowAccess in interface uk.ac.starlink.table.StarTable
      Overrides:
      getRowAccess in class uk.ac.starlink.table.AbstractStarTable
      Throws:
      IOException

    • getStringEntry

      public static String getStringEntry(uk.ac.bristol.star.cdf.VariableAttribute att, uk.ac.bristol.star.cdf.Variable var)
      Gets a variable's attribute value expected to be of string type.
      Parameters:
      att - attribute
      var - variable
      Returns:
      string value of att for var, or null if it doesn't exist or has the wrong type

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