supercsv

I'm trying to write a large number of rows (~2 million) from a database to a CSV file using SuperCSV. I need to perform validation on each cell as it is written, and the built-in CellProcessors do very nicely. I want to capture all the exceptions that are thrown by the CellProcessors so that I can go back to the source data and make changes. The problem is that when there are multiple errors in a single row (e.g. The first value is out of range, the second value is null but shouldn't be), only the first CellProcessor will execute, and so I'll only see one of the errors. I want to process the

I have a hashmap with a String key and String value. It contains a large number of keys and their respective values. For example: key | value abc | aabbcc def | ddeeff I would like to write this hashmap to a csv file such that my csv file contains rows as below: abc,aabbcc def,ddeeff I tried the following example here using the supercsv library: http://javafascination.blogspot.com/2009/07/csv-write-using-java.html . However, in this example, you have to create a hashmap for each row that you want to add to your csv file. I have a large number of key value pairs which means that several

So I'm working on parsing a .csv file. I took the advice of another thread somewhere on StackOverflow and downloaded SuperCSV. I finally got pretty much everything working, but now I've run into a bug that seems difficult to fix. The problem occurs because the last two columns of data may or may not be populated. Here is an example of a .csv file with the first row missing the last column, and the second row entirely complete: 2012:07:25,11:48:20,922,"uLog.exe","",Key pressed,1246,341,-1.00,-1.00,1.00,Shift 2012:07:25,11:48:21,094,"uLog.exe","",Key pressed,1246,341,-1.00,-1.00,1.00,b,Shift

I have a CSV file with the following columns: id , fname , telephone , lname , address . I have a Person class with id , fname and lname data members. I want to map only these columns to Person object from a CSV file and discard telephone and address columns. How can I do this? The solution must scale as more columns are added in future. And should work regardless of column position. In an ideal solution user will only specify columns to read and it should just work. You can use HeaderColumnNameTranslateMappingStrategy . Lets assume your CSV has the following columns: Id , Fname , Telephone ,