@Override
public void execute(
JavaSparkContext ctx, SQLContext sqlContext, WorkflowContext workflowContext, DataFrame df) {
workflowContext.out("Executing NodePrintFirstNRows : " + id);
Row[] rows = df.take(n);
for (Row row : rows) {
workflowContext.out(row.toString());
}
super.execute(ctx, sqlContext, workflowContext, df);
}
@Override
public void execute(
JavaSparkContext ctx, SQLContext sqlContext, WorkflowContext workflowContext, DataFrame df) {
workflowContext.out("Executing NodeGraphLineChart : " + id);
Seq<Column> seq = DataFrameUtil.getColumnsAsSeq(df, columns);
// select the required columns from the input dataframe
DataFrame selectdf = df.select(seq);
workflowContext.outSchema(selectdf);
super.execute(ctx, sqlContext, workflowContext, df);
}