Examples with IChartPlugin org.pentaho.chart.plugin.IChartPlugin used on opensource projects

Example 1 with IChartPlugin

use of org.pentaho.chart.plugin.IChartPlugin in project pentaho-platform by pentaho.

the class ChartBeansSystemListener method initPlugins.

/**
 * This methods looks in the chartbeans configuration file, and retrieves the prescribed list of chart plugins
 * (renderers). For each defined renderer, the method then looks to the PluginManager to see if that renderer has been
 * overridden. If it has, then the class defined in the PluginManager will be loaded IN PLACE OF the configuration
 * file's class.
 *
 * @return list of available chart "plugin" (renderer) instances.
 * @throws Exception
 *           if no chart plugins (renderers) are found.
 */
@SuppressWarnings("unchecked")
private List<IChartPlugin> initPlugins() throws Exception {
    ArrayList<IChartPlugin> plugins = new ArrayList<IChartPlugin>();
    HashMap<String, Object> pluginMap = new HashMap<String, Object>();
    // $NON-NLS-1$
    List<Element> nodes = PentahoSystem.getSystemSettings().getSystemSettings(configFile, "bean");
    if (nodes == null || nodes.size() == 0) {
        // $NON-NLS-1$
        String msg = Messages.getInstance().getString("ChartBeansSystemListener.ERROR_0001_CONFIG_MISSING");
        Logger.warn(ChartBeansSystemListener.class.getName(), msg);
        throw new ChartSystemInitializationException(msg);
    }
    Element node;
    String id;
    Object plugin;
    IPluginManager pluginManager = PentahoSystem.get(IPluginManager.class);
    for (int i = 0; i < nodes.size(); i++) {
        node = nodes.get(i);
        // $NON-NLS-1$
        id = node.attribute("id").getText();
        // $NON-NLS-1$
        pluginMap.put(id, node.attribute("class").getText());
        // Now let's see if there is a plugin overriding this engine...
        if ((null != pluginManager) && (pluginManager.isBeanRegistered(id))) {
            try {
                plugin = pluginManager.getBean(id);
                pluginMap.put(id, plugin);
            } catch (PluginBeanException e) {
                Logger.warn(ChartBeansSystemListener.class.getName(), Messages.getInstance().getString("ChartBeansSystemListener.ERROR_0002_PLUGINMANAGER_BEAN_MISSING", // $NON-NLS-1$
                id), e);
            }
        }
    }
    for (Object clazz : pluginMap.values()) {
        try {
            if (clazz instanceof String) {
                plugins.add((IChartPlugin) Class.forName(clazz.toString()).newInstance());
            } else {
                plugins.add((IChartPlugin) clazz);
            }
        } catch (Exception ex) {
            Logger.warn(ChartBeansSystemListener.class.getName(), Messages.getInstance().getString("ChartBeansSystemListener.ERROR_0003_CLASS_CREATION_PROBLEM") + clazz, // $NON-NLS-1$
            ex);
        }
    }
    return plugins;
}