Building database connections to a JSF DataWindow

CR #428108

Description: If you use onLoadHandler to build a database connection to a JavaServer Faces (JSF) DataWindow, turn on the enableDataCache option, bind the Java-side DataWindow component function retrieve to a JSF button, and call the function at runtime, the JSF DataWindow loses all its rows.

Workaround: Disable the enableDataCache option when using onLoadHandler to build a database connection to JSF DataWindow.