Examples of de.laures.cewolf.ChartPostProcessor

de.laures.cewolf.ChartPostProcessor
Postprocesses a generated chart instance. Objects of this class can be used to customize a generated and afterwards rendered chart instance additionally. To provide a postprocessor the <chartpostprocessor> tag is used. There can be an unlimited number of postprocessors registered.
Change by U. Dittmer: ChartPostProcessor implementations need to be serializable now. Amongst other consequences, that means they can no longer be declared in JSP pages. Keeping code in JSPs should be avoided anyway, but some cewolf demos did this. @see de.laures.cewolf.taglib.tags.ChartPostProcessorTag

    private static final Log log = LogFactory.getLog(ChartPostProcessorTag.class);


  static final long serialVersionUID = 2608233610238632442L;


    public int doEndTag() throws JspException {
        ChartPostProcessor pp = null;
        try {
            pp = (ChartPostProcessor) getObject();
            if (pp == null) {
                throw new JspException("Could not find ChartPostProcessor under ID '" + getId() + "'");
            }
        } catch (ClassCastException cce) {
            throw new JspException("Bean under ID '" + getId() + "' is of type '"
            + getObject().getClass().getName() + "'.\nType expected:" + ChartPostProcessor.class.getName());
        }
        AbstractChartTag rt = (AbstractChartTag) PageUtils.findRoot(this, pageContext);
        ChartPostProcessor cpp = (ChartPostProcessor) getObject();
    if (cpp instanceof Serializable) {
      rt.addChartPostProcessor(cpp, getParameters());
    } else if (cpp instanceof NonSerializableChartPostProcessor) {
      rt.addChartPostProcessor(((NonSerializableChartPostProcessor) cpp).getSerializablePostProcessor(), getParameters());
    } else {
      log.error("ChartPostProcessor "+cpp.getClass().getName()+" implements neither Serializable nor NonSerializableChartPostProcessor. It will be ignored.");
    }
        return doAfterEndTag(EVAL_PAGE);
    }

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        }
      }


            // postProcessing
      for (int i = 0; i < postProcessors.size(); i++) {
        ChartPostProcessor cpp = (ChartPostProcessor) postProcessors.get(i);
        try {
          cpp.processChart(chart, (Map) postProcessorsParams.get(i));
        } catch (Throwable t) {
          t.printStackTrace();
          throw new PostProcessingException(t.getClass().getName() + " raised by post processor '" +
              cpp + "'.\nPost processing of this post processor " + "has been ignored.");
        }

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   * @param renderedImage The fresh image just got rendered
   */
  public void onImageRendered (RenderedImage renderedImage) {
    // if the postprocessor implements ImageRenderListener interface call it!
        for (int i = 0; i < postProcessors.size(); i++) {
            ChartPostProcessor cpp = (ChartPostProcessor)postProcessors.get(i);
            if (cpp instanceof ChartImageRenderListener) {
              ((ChartImageRenderListener) cpp).onImageRendered(renderedImage);
            }
        }
  }

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 * @author  Guido Laures 
 */
public class ChartPostProcessorTag extends AbstractParameterizedObjectTag {


    public int doEndTag() throws JspException {
        ChartPostProcessor pp = null;
        try {
            pp = (ChartPostProcessor)getObject();
            if (pp == null) {
                throw new JspException("Could not find ChartEnhanncer under ID '" + getId() + "'");
            }
        } catch (ClassCastException cce) {
            throw new JspException("Bean under ID '" + getId() + "' is of type '"
            + pp.getClass().getName() +
            "'.\nType expected:" + ChartPostProcessor.class.getName());
        }
        AbstractChartTag rt = (AbstractChartTag)PageUtils.findRoot(this, pageContext);
        rt.addChartPostProcessor((ChartPostProcessor)getObject(), getParameters());
        return doAfterEndTag(EVAL_PAGE);

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            {
              this.removeLegend();
            }
            // postProcessing
            for (int i = 0; i < postProcessors.size(); i++) {
                ChartPostProcessor pp = (ChartPostProcessor)postProcessors.get(i);
                try {
                    pp.processChart(chart, (Map)postProcessorsParams.get(i));
                } catch (Throwable t) {
                  log.error(t);
                    throw new PostProcessingException(t.getClass().getName() + " raised by post processor '" +
                        pp + "'.\nPost processing of this post processor " + "has been ignored.");
                }

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   * @param renderedImage The fresh image just got rendered
   */
  public void onImageRendered (RenderedImage renderedImage) {
    // if the postprocessor implements ImageRenderListener interface call it!
        for (int i = 0; i < postProcessors.size(); i++) {
            ChartPostProcessor pp = (ChartPostProcessor)postProcessors.get(i);
            if (pp instanceof ChartImageRenderListener) {
              ((ChartImageRenderListener) pp).onImageRendered(renderedImage);
            }
        }    
  }

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Related Classes of de.laures.cewolf.ChartPostProcessor

de.laures.cewolf.taglib.AbstractChartDefinition

de.laures.cewolf.taglib.tags.ChartPostProcessorTag

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