Class QueryDataRowWrapper

  • All Implemented Interfaces:

    public class QueryDataRowWrapper
    extends Object
    implements DataRow
    A data-row wrapper that adds a new artificial parameter to the original datarow that holds the query-limit.
    Thomas Morgner
    • Method Detail

      • get

        public Object get​(String col)
        Returns the value of the function, expression or column using its specific name. The given name is translated into a valid column number and the the column is queried. For functions and expressions, the getValue() method is called and for columns from the tablemodel the tablemodel method getValueAt(row, column) gets called.
        Specified by:
        get in interface DataRow
        col - the item index.
        the value.
      • getColumnNames

        public String[] getColumnNames()
        Description copied from interface: DataRow
        Returns the known column names, this data-row understands. The column names may change over time but do not change while a event is processed by a function. The array returned is a copy of the internal data-storage and can be safely modified.
        Specified by:
        getColumnNames in interface DataRow
        the column names as array.
      • isChanged

        public boolean isChanged​(String name)
        Checks whether the value contained in the column has changed since the last advance-operation.
        Specified by:
        isChanged in interface DataRow
        name - the name of the column.
        true, if the value has changed, false otherwise.