Package uk.ac.starlink.ttools.jel

Class TablelessJELRowReader

  • public class TablelessJELRowReader
extends JELRowReader
    JELRowReader implementation which has no columns. It does not inherit from StarTableJELRowReader. All methods referring to columns throw an UnsupportedOperationException, but since there are no columns, they should never be invoked.
    Since:
    13 Oct 2014
    Author:
    Mark Taylor

    • Constructor Detail

      • TablelessJELRowReader

        public TablelessJELRowReader()
        Constructor.

    • Method Detail

      • getColumnClass

        protected java.lang.Class<?> getColumnClass​(int icol)
        Description copied from class: JELRowReader
        Returns the class of values returned by a given column. If no column with the given index exists, null should be returned.
        Specified by:
        getColumnClass in class JELRowReader
        Parameters:
        icol - non-negative column index
        Returns:
        value class, or null for non-existent column

      • getColumnIndexByName

        protected int getColumnIndexByName​(java.lang.String name)
        Description copied from class: JELRowReader
        Returns the column index of a column in the row given its name. If name does not refer to any known column, return -1.
        Specified by:
        getColumnIndexByName in class JELRowReader
        Parameters:
        name - column name
        Returns:
        column index, or -1

      • getConstantByName

        protected Constant getConstantByName​(java.lang.String name)
        Description copied from class: JELRowReader
        Returns a constant value for this reader given its name.
        Specified by:
        getConstantByName in class JELRowReader
        Parameters:
        name - constant name
        Returns:
        constant, or null

      • getBooleanColumnValue

        protected boolean getBooleanColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a boolean value for a cell of the current row. Will only be called if the relevant column is declared boolean. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getBooleanColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getByteColumnValue

        protected byte getByteColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a byte value for a cell of the current row. Will only be called if the relevant column is declared byte. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getByteColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getCharColumnValue

        protected char getCharColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a char value for a cell of the current row. Will only be called if the relevant column is declared char. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getCharColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getShortColumnValue

        protected short getShortColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a short value for a cell of the current row. Will only be called if the relevant column is declared short. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getShortColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getIntColumnValue

        protected int getIntColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a int value for a cell of the current row. Will only be called if the relevant column is declared int. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getIntColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getLongColumnValue

        protected long getLongColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a long value for a cell of the current row. Will only be called if the relevant column is declared long. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getLongColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getObjectColumnValue

        protected java.lang.Object getObjectColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns an Object value for a cell of the current row.
        Specified by:
        getObjectColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getFloatColumnValue

        protected float getFloatColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a float value for a cell of the current row. Will only be called if the relevant column is declared float. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getFloatColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • getDoubleColumnValue

        protected double getDoubleColumnValue​(int icol)
        Description copied from class: JELRowReader
        Returns a double value for a cell of the current row. Will only be called if the relevant column is declared double. Must call JELRowReader.foundNull() (and return any value) if the result is null.
        Specified by:
        getDoubleColumnValue in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        value

      • isBlank

        protected boolean isBlank​(int icol)
        Description copied from class: JELRowReader
        Indicates whether the value in a given column is null.
        Specified by:
        isBlank in class JELRowReader
        Parameters:
        icol - column index
        Returns:
        true if value at icol is null