com.pervasive.datarush.graphs

Interface GraphCompilationListener

public interface GraphCompilationListener

Provides notification whenever an operator is compiled. This is intended for use by framework only. Listeners may be registed via LogicalGraph.addCompilationListener(GraphCompilationListener).

Method Summary

Modifier and Type	Method and Description
void	preCompile(MetadataContext ctx, GraphPath path, LogicalOperator operator) Invoked just prior to compiling an operator.

Method Detail

preCompile

void preCompile(MetadataContext ctx,
                GraphPath path,
                LogicalOperator operator)
         throws DROperatorException

Invoked just prior to compiling an operator.

Parameters:

ctx - the metadata context in which the operator is going to be compiled. At the point in time when this method is invoked, metadata for the operator's inputs ports will be available.

path - the path to the operator

operator - the operator

Throws:

DROperatorException - if compilation cannot proceed