Package org.jfree.report.expressions

Examples of org.jfree.report.expressions.FormulaExpression


        super.startParsing(attrs);

        final String formula = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "formula");
        if (formula != null)
        {
            final FormulaExpression valueExpression = new FormulaExpression();
            valueExpression.setFormula(formula);
            element.setValueExpression(valueExpression);
        }

        // * Print-Repeated-Values
        // * Print-In-First-New-Section
 
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                attrs.getValue(OfficeNamespaces.OOREPORT_NS, OfficeToken.STYLE_NAME);
        if (stylename == null)
        {
            throw new ParseException("Required attribute 'style-name' is missing.", getLocator());
        }
        final FormulaExpression valueExpression = new FormulaExpression();
        valueExpression.setFormula(formula);

        final String enabledText = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "enabled");
        final boolean enabled = (enabledText == null || OfficeToken.TRUE.equals(enabledText));
        final FormatCondition formatCondition =
                new FormatCondition(valueExpression, stylename, enabled);
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            function.setFormula(formula);
            this.expression = function;
        }
        else
        {
            final FormulaExpression expression = new FormulaExpression();
            expression.setFormula(formula);
            this.expression = expression;
        }

        expression.setName(name);
        expression.setDeepTraversing(OfficeToken.TRUE.equals(deepTraversing));
        final String preEvaluated = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "pre-evaluated");
        expression.setPrecompute(OfficeToken.TRUE.equals(preEvaluated));
    }
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//        final String preserveIRI = attrs.getValue(OfficeNamespaces.OOREPORT_NS, OfficeToken.PRESERVE_IRI);
        if (formula != null && formula.length() != 0)
        {
            // now, the evaulated content ends up in the 'content' attribute of the
            // element.
            final FormulaExpression valueExpression = new FormulaExpression();
            valueExpression.setFormula(formula);
            contentElement.setFormula(valueExpression);
        }

        contentElement.setNamespace(OfficeNamespaces.FORM_NS);
        contentElement.setType(OfficeToken.IMAGE);
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        super.startParsing(attrs);

        final String groupExpr = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "group-expression");
        if (groupExpr != null && !"".equals(groupExpr))
        {
            final FormulaExpression function = new FormulaExpression();
            function.setFormula(groupExpr);
            groupInstanceSection.setGroupingExpression(function);
        }
    }
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          function.setFormula(formula);
          this.expression = function;
        }
        else
        {
          FormulaExpression expression = new FormulaExpression();
          expression.setFormula(formula);
          this.expression = expression;
        }
      }
      else
      {
        className = getDefaultClassName();
        if (className == null)
        {
          throw new ParseException("Required attribute 'class' is missing.",
              getRootHandler().getDocumentLocator());
        }
      }
    }

    if (expression == null)
    {
      expression = (Expression) ObjectUtilities.loadAndInstantiate
        (className, AbstractExpressionReadHandler.class, Expression.class);
      if (expression == null)
      {
        throw new ParseException("Expression '" + className +
            "' is not valid. The specified class is not an expression or function.",
             getRootHandler().getDocumentLocator());
      }
    }

    expression.setName(name);
    expression.setDeepTraversing("true".equals(attrs.getValue(getUri(), "deep-traversing")));
    expression.setPrecompute("true".equals(attrs.getValue(getUri(), "precompute")));
    expression.setPreserve("true".equals(attrs.getValue(getUri(), "preserve")));

    try
    {
      expressionBeanUtility = new BeanUtility(expression);
    }
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    protected boolean isValueChanged()
    {
        try
        {
            final FormattedTextElement element = (FormattedTextElement) getNode();
            final FormulaExpression formulaExpression = element.getValueExpression();
            final Formula formula = formulaExpression.getCompiledFormula();
            final LValue lValue = formula.getRootReference();
            return isReferenceChanged(lValue);
        }
        catch (final ParseException e)
        {
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            final FlowController flowController)
            throws DataSourceException
    {
        // here it is relatively easy. We have to evaluate the expression, convert
        // the result into a string, and print that string.
        final FormulaExpression formulaExpression = element.getValueExpression();
        final Object result = LayoutControllerUtil.evaluateExpression(flowController, element, formulaExpression);
        if (result == null)
        {
            // ignore it. Ignoring it is much better than printing 'null'.
            // LOGGER.debug("Formula '" + formulaExpression.getFormula() + "' evaluated to null.");
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    protected LayoutController delegateContentGeneration(final ReportTarget target)
            throws ReportProcessingException, ReportDataFactoryException,
            DataSourceException
    {
        final ImageElement imageElement = (ImageElement) getNode();
        final FormulaExpression formulaExpression = imageElement.getFormula();
        if (formulaExpression == null)
        {
            // A static image is easy. At least at this level. Dont ask about the weird things we have to do in the
            // output targets ...
            final String linkTarget = imageElement.getImageData();
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    }

    protected boolean isValueChanged()
    {
        final ImageElement imageElement = (ImageElement) getNode();
        final FormulaExpression formulaExpression = imageElement.getFormula();
        if (formulaExpression == null)
        {
            final FlowController controller = getFlowController();
            final GlobalMasterRow masterRow = controller.getMasterRow();
            final ReportDataRow reportDataRow = masterRow.getReportDataRow();
            return reportDataRow.getCursor() == 0;
        }

        try
        {
            final Formula formula = formulaExpression.getCompiledFormula();
            final LValue lValue = formula.getRootReference();
            return isReferenceChanged(lValue);
        }
        catch (ParseException e)
        {
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Related Classes of org.jfree.report.expressions.FormulaExpression

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