Filter output columns in Table in SAP application

I think there can be a better option to do this. What you can try is fetch only the fields of the table which match the fields present in the table. Do not fetch all the fields of the table but the selected fields.

This approach helps optimize performance by retrieving only the necessary columns instead of all available table fields. The displayField collection contains the specific column names you want to filter and display.

Filtering Table Columns Example

Here's how to filter output columns when working with SAP JCo Tables ?

// Here Table refers to the JCo.Table
for (int j = 0; j < Table.getNumRows(); j++) {
    Table.setRow(j);
    Iterator iter = displayField.iterator();
    // fetch columns present in the current record
    while(iter.hasNext()){
        String column = (String) iter.next();
        String value = Table.getString(column);
        // perform your logic here
        System.out.println("Column: " + column + ", Value: " + value);
    }
}

In this example ?

• Table.getNumRows() ? Returns the total number of rows in the JCo table
• Table.setRow(j) ? Sets the current row pointer to position j
• displayField ? Iterator containing the names of columns you want to display
• Table.getString(column) ? Retrieves the string value for the specified column name

This method ensures that you only process the columns you actually need, reducing memory usage and improving performance when dealing with large SAP tables that may contain many unnecessary fields.

Conclusion

Filtering output columns in SAP JCo tables by fetching only selected fields instead of all available columns significantly improves performance and reduces memory consumption in your SAP applications.