@Override
public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op,
IOperatorSchema opSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema)
throws AlgebricksException {
RunningAggregateOperator ragg = (RunningAggregateOperator) op;
List<LogicalVariable> variables = ragg.getVariables();
List<Mutable<ILogicalExpression>> expressions = ragg.getExpressions();
int[] outColumns = new int[variables.size()];
for (int i = 0; i < outColumns.length; i++) {
outColumns[i] = opSchema.findVariable(variables.get(i));
}
IRunningAggregateEvaluatorFactory[] runningAggFuns = new IRunningAggregateEvaluatorFactory[expressions.size()];
IExpressionRuntimeProvider expressionRuntimeProvider = context.getExpressionRuntimeProvider();
for (int i = 0; i < runningAggFuns.length; i++) {
StatefulFunctionCallExpression expr = (StatefulFunctionCallExpression) expressions.get(i).getValue();
runningAggFuns[i] = expressionRuntimeProvider.createRunningAggregateFunctionFactory(expr,
context.getTypeEnvironment(op.getInputs().get(0).getValue()), inputSchemas, context);
}
int[] projectionList = JobGenHelper.projectAllVariables(opSchema);
RunningAggregateRuntimeFactory runtime =
new RunningAggregateRuntimeFactory(projectionList, outColumns, runningAggFuns);
runtime.setSourceLocation(ragg.getSourceLocation());
RecordDescriptor recDesc = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op), opSchema, context);
builder.contributeMicroOperator(ragg, runtime, recDesc);
ILogicalOperator src = ragg.getInputs().get(0).getValue();
builder.contributeGraphEdge(src, 0, ragg, 0);
}