/// <summary> renders the input string using the context into the output writer.
/// To be used when a template is dynamically constructed, or want to use
/// Velocity as a token replacer.
///
/// </summary>
/// <param name="context">context to use in rendering input string
/// </param>
/// <param name="out"> Writer in which to render the output
/// </param>
/// <param name="logTag"> string to be used as the template name for Log
/// messages in case of Error
/// </param>
/// <param name="instring">input string containing the VTL to be rendered
///
/// </param>
/// <returns> true if successful, false otherwise. If false, see
/// Velocity runtime Log
/// </returns>
/// <throws> ParseErrorException The template could not be parsed. </throws>
/// <throws> MethodInvocationException A method on a context object could not be invoked. </throws>
/// <throws> ResourceNotFoundException A referenced resource could not be loaded. </throws>
/// <throws> IOException While rendering to the writer, an I/O problem occured. </throws>
public virtual bool Evaluate(IContext context, TextWriter writer, string logTag, string instring)
{
return(ri.Evaluate(context, writer, logTag, instring));
}