Package org.jfree.report.expressions

Class FormulaExpression

java.lang.Object
org.jfree.report.expressions.AbstractExpression
org.jfree.report.expressions.FormulaExpression
All Implemented Interfaces:
Serializable, Cloneable, Expression
public class FormulaExpression extends AbstractExpression
Creation-Date: 04.11.2006, 19:24:04
Author:
Thomas Morgner
See Also:

  • Constructor Details

    • FormulaExpression

      public FormulaExpression()

  • Method Details

    • getFormula

      public String getFormula()

    • getFormulaNamespace

      public String getFormulaNamespace()

    • getFormulaExpression

      public String getFormulaExpression()

    • setFormula

      public void setFormula(String formula)

    • getCompiledFormula

      public org.pentaho.reporting.libraries.formula.Formula getCompiledFormula() throws org.pentaho.reporting.libraries.formula.parser.ParseException
      Returns the compiled formula. The formula is not connected to a formula context.
      Returns:
      the formula.
      Throws:
      org.pentaho.reporting.libraries.formula.parser.ParseException - if the formula contains syntax errors.

    • computeValue

      public Object computeValue() throws DataSourceException
      Return the current expression value.

      The value depends (obviously) on the expression implementation.

      Returns:
      the value of the function.
      Throws:
      DataSourceException

    • clone

      public Object clone() throws CloneNotSupportedException
      Clones the expression, expression should be reinitialized after the cloning.

      Expression maintain no state, cloning is done at the beginning of the report processing to disconnect the used expression from any other object space.

      Specified by:
      clone in interface Expression
      Overrides:
      clone in class AbstractExpression
      Returns:
      A clone of this expression.
      Throws:
      CloneNotSupportedException - this should never happen.