Optimize Pivot Refresh Code

Aspose.Total Product Family
1

We are using this code for refreshing the pivot table how can we optimize it

        if (worksheet != null) {
            PivotTable pivotTable = worksheet.getPivotTables().get("PivotTable15");
            if (worksheet.getPivotTables().getCount() > 0) {
                if (pivotTable != null) {
                    for (int i = 0; i < pivotTable.getPageFields().getCount(); i++) {
                        PivotField pf = pivotTable.getPageFields().get(i);
                        for (int j = 0; j < pf.getPivotItems().getCount(); j++) {
                            PivotItem pi = pf.getPivotItems().get(j);
                            if (pi != null) {
                                pi.setPosition(0); // THIS IS IMPORTANT
                            } else {
                                System.out.println("PivotItem is null");
                            }
                        }
                        pf.setShowAllItems(true);
                        System.out.println("Field- {}"+ pf.getName());
                    }
					pivotTable.setRefreshDataFlag(true);
					pivotTable.refreshData();
					pivotTable.calculateData();
					pivotTable.setRefreshDataOnOpeningFile(true);
                }
            }
2

@sr2989

To optimize your pivot table refresh code, consider the following improvements:

  1. Reduce Redundant Calls: Instead of checking getCount() multiple times, store the count in a variable.
  2. Use Enhanced For-Loop: Instead of traditional for-loops, use enhanced for-loops for better readability.
  3. Batch Updates: If possible, batch updates to the pivot items to minimize the number of calls to the API.

Here’s a revised version of your code with these optimizations:

if (worksheet != null) {
    PivotTable pivotTable = worksheet.getPivotTables().get("PivotTable15");
    int pivotCount = worksheet.getPivotTables().getCount();
    
    if (pivotCount > 0 && pivotTable != null) {
        for (PivotField pf : pivotTable.getPageFields()) {
            for (PivotItem pi : pf.getPivotItems()) {
                if (pi != null) {
                    pi.setPosition(0); // THIS IS IMPORTANT
                } else {
                    System.out.println("PivotItem is null");
                }
            }
            pf.setShowAllItems(true);
            System.out.println("Field- " + pf.getName());
        }
        pivotTable.setRefreshDataFlag(true);
        pivotTable.refreshData();
        pivotTable.calculateData();
        pivotTable.setRefreshDataOnOpeningFile(true);
    }
}

These changes should help improve the performance and readability of your code. If you encounter specific performance issues, consider profiling the code to identify bottlenecks.

3

Can we remove the for loops to optimize - what is the significance of

for (int i = 0; i < pivotTable.getPageFields().getCount(); i++) {
PivotField pf = pivotTable.getPageFields().get(i);
for (int j = 0; j < pf.getPivotItems().getCount(); j++) {
PivotItem pi = pf.getPivotItems().get(j);
if (pi != null) {
pi.setPosition(0); // THIS IS IMPORTANT

4

@sr2989,

It seems you want to filter the page fields or set one visible item, then you have to loop through all PivotItems to set their position accordingly. So, your code is OK for the task. Do you find any performance or other issue with it? If so, kindly do provide more details with sample Excel files (input file (if any) and output files) and complete sample (runnable) code to reproduce the issue on our end, we will check it soon.