Examples with ChartModel org.pentaho.chart.model.ChartModel used on opensource projects

Example 1 with ChartModel

use of org.pentaho.chart.model.ChartModel in project pentaho-platform by pentaho.

the class DefaultChartBeansGenerator method createChartAsHtml.

public String createChartAsHtml(IPentahoSession userSession, Map<String, Object> parameterMap, String serializedChartDataDefinition, String serializedChartModel, int chartWidth, int chartHeight) throws IOException {
    ChartModel chartModel = ChartSerializer.deSerialize(serializedChartModel, ChartSerializationFormat.JSON);
    String html = null;
    if (chartModel.getChartEngineId() == null) {
        // Load default value from system setting or take hard coded
        // Hard coded final fall back is Open Flash Chart
        String defaultChartEngine = PentahoSystem.getSystemSetting("chartbeans/chartbeans_config.xml", "default-chart-engine", // $NON-NLS-1$ //$NON-NLS-2$
        OpenFlashChartPlugin.PLUGIN_ID);
        if (defaultChartEngine == null) {
            defaultChartEngine = OpenFlashChartPlugin.PLUGIN_ID;
        }
        chartModel.setChartEngineId(defaultChartEngine);
    }
    // Check for render engine override
    String override = (String) parameterMap.get("renderEngine");
    if (override != null) {
        chartModel.setChartEngineId(override);
    }
    serializedChartModel = ChartSerializer.serialize(chartModel, ChartSerializationFormat.JSON);
    if (JFreeChartPlugin.PLUGIN_ID.equals(chartModel.getChartEngineId())) {
        // $NON-NLS-1$
        final String SOLUTION_TMP_DIR = "system/tmp/";
        File chartFileOnServer = new File(new File(PentahoSystem.getApplicationContext().getFileOutputPath(SOLUTION_TMP_DIR)), java.util.UUID.randomUUID().toString());
        BufferedOutputStream bos = null;
        try {
            bos = new BufferedOutputStream(new FileOutputStream(chartFileOnServer));
            this.internalCreateChart(userSession, parameterMap, serializedChartDataDefinition, serializedChartModel, chartWidth, chartHeight, null, bos);
        } finally {
            IOUtils.closeQuietly(bos);
        }
        IPentahoRequestContext requestContext = PentahoRequestContextHolder.getRequestContext();
        String contextPath = requestContext.getContextPath();
        // $NON-NLS-1$ //$NON-NLS-2$
        String url = contextPath + "/";
        // $NON-NLS-1$
        final String IMAGE_URL_TEMPLATE = "{0}getImage?image={1}";
        final String imageUrl = MessageFormat.format(IMAGE_URL_TEMPLATE, new String[] { url, chartFileOnServer.getName() });
        html = this.mergeStaticImageHtmlTemplate(imageUrl);
    } else if (OpenFlashChartPlugin.PLUGIN_ID.equals(chartModel.getChartEngineId())) {
        ByteArrayOutputStream tmpOut = new ByteArrayOutputStream();
        this.internalCreateChart(userSession, parameterMap, serializedChartDataDefinition, serializedChartModel, chartWidth, chartHeight, null, tmpOut);
        // $NON-NLS-1$
        final String ENCODING = "UTF-8";
        ByteArrayInputStream in = new ByteArrayInputStream(tmpOut.toByteArray());
        IOUtils.closeQuietly(tmpOut);
        html = IOUtils.toString(in, ENCODING);
        IOUtils.closeQuietly(in);
    } else {
        // $NON-NLS-1$
        throw new IllegalArgumentException("unrecognized chart engine");
    }
    return html;
}