ScriptDataSource.java 文件源码

/**
 * Handle data change
 */
@Override
protected synchronized void handleChange ( final Map<String, DataSourceHandler> sources )
{
    // calculate
    // gather all data
    final Map<String, DataItemValue> values = new HashMap<String, DataItemValue> ();
    for ( final Map.Entry<String, DataSourceHandler> entry : sources.entrySet () )
    {
        values.put ( entry.getKey (), entry.getValue ().getValue () );
    }

    this.scriptContext.setAttribute ( "data", values, ScriptContext.ENGINE_SCOPE );
    this.scriptContext.setAttribute ( "writer", this.writer, ScriptContext.ENGINE_SCOPE );
    this.scriptContext.setAttribute ( "eventProcessor", this.eventProcessor, ScriptContext.ENGINE_SCOPE );

    executeScript ( this.updateCommand );
}