Class ExpressionDataRow

  • All Implemented Interfaces:
    DataRow, DataSet

    public final class ExpressionDataRow
    extends java.lang.Object
    implements DataRow
    A datarow for all expressions encountered in the report. This datarow is a stack-like structure, which allows easy adding and removing of expressions, even if these expressions have been cloned and or otherwisely modified.
    Author:
    Thomas Morgner
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      ExpressionDataRow advance​(GlobalMasterRow master, boolean deepTraversing)
      Advances to the next row and attaches the given master row to the objects contained in that client data row.
      ExpressionDataRow derive​(GlobalMasterRow master)  
      java.lang.Object get​(int col)
      Returns the value of the expressions or column in the tablemodel using the given column number as index.
      java.lang.Object get​(java.lang.String col)
      Returns the value of the function, expressions or column using its specific name.
      int getColumnCount()
      Returns the number of columns, expressions and functions and marked ReportProperties in the report.
      java.lang.String getColumnName​(int col)
      Returns the name of the column, expressions or function.
      DataFlags getFlags​(int col)
      Queries lowlevel meta-data for the current value of the specified column.
      DataFlags getFlags​(java.lang.String col)
      Queries lowlevel meta-data for the current value of the specified column.
      ExpressionSlot[] getSlots()  
      void popExpression()  
      void popExpressions​(int counter)  
      void pushExpression​(ExpressionSlot expressionSlot)
      This adds the expression to the data-row and queries the expression for the first time.
      void pushExpressions​(ExpressionSlot[] expressionSlots)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • get

        public java.lang.Object get​(int col)
                             throws DataSourceException
        Returns the value of the expressions or column in the tablemodel using the given column number as index. 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
        Specified by:
        get in interface DataSet
        Parameters:
        col - the item index.
        Returns:
        the value.
        Throws:
        java.lang.IllegalStateException - if the datarow detected a deadlock.
        DataSourceException - if an error occured.
      • get

        public java.lang.Object get​(java.lang.String col)
                             throws DataSourceException
        Returns the value of the function, expressions 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
        Parameters:
        col - the item index.
        Returns:
        the value.
        Throws:
        java.lang.IllegalStateException - if the datarow detected a deadlock.
        DataSourceException - if an error occured.
      • getColumnName

        public java.lang.String getColumnName​(int col)
        Returns the name of the column, expressions or function. For columns from the tablemodel, the tablemodels getColumnName method is called. For functions, expressions and report properties the assigned name is returned.
        Specified by:
        getColumnName in interface DataRow
        Specified by:
        getColumnName in interface DataSet
        Parameters:
        col - the item index.
        Returns:
        the name.
      • getColumnCount

        public int getColumnCount()
        Returns the number of columns, expressions and functions and marked ReportProperties in the report.
        Specified by:
        getColumnCount in interface DataRow
        Specified by:
        getColumnCount in interface DataSet
        Returns:
        the item count.
      • getFlags

        public DataFlags getFlags​(java.lang.String col)
        Description copied from interface: DataRow
        Queries lowlevel meta-data for the current value of the specified column.
        Specified by:
        getFlags in interface DataRow
        Parameters:
        col - the colum for which to query the meta-data flags
        Returns:
        the dataflag collection for the value in the named column
      • getFlags

        public DataFlags getFlags​(int col)
        Description copied from interface: DataRow
        Queries lowlevel meta-data for the current value of the specified column.
        Specified by:
        getFlags in interface DataRow
        Parameters:
        col - the colum for which to query the meta-data flags
        Returns:
        the dataflag collection for the value in the specified column
      • advance

        public ExpressionDataRow advance​(GlobalMasterRow master,
                                         boolean deepTraversing)
                                  throws DataSourceException
        Advances to the next row and attaches the given master row to the objects contained in that client data row.
        Parameters:
        master -
        deepTraversing - only advance expressions that have been marked as deeply traversing
        Returns:
        Throws:
        DataSourceException