Package org.wso2.carbon.module.csv.util

Class CsvTransformer

java.lang.Object

org.wso2.carbon.module.csv.util.CsvTransformer

public class CsvTransformer
extends Object

Common transformation methods for CSV payload.

Method Summary

Modifier and Type	Method	Description
static String[]	getHeader(org.wso2.carbon.module.core.models.CsvPayloadInfo payloadInfo, HeaderAvailability headerAvailability)	Get CSV header.
static int	getLinesToSkip(HeaderAvailability headerAvailability, int dataRowsToSkip)	Return lines to skip from CSV content.
static int	resolveColumnIndex(String query, String[] header)	Get column index by the given query.
static Stream<String[]>	skipColumns(int columnCount, String skipColumnsQuery, Stream<String[]> csvArrayStream, String[] header)	Skip columns from CSV content.
static String[]	skipColumnsSingleRow(int columnCount, String columnsToSkip, String[] row, String[] header)	Skip columns from the given CSV row.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getHeader

public static String[] getHeader(org.wso2.carbon.module.core.models.CsvPayloadInfo payloadInfo,
                                 HeaderAvailability headerAvailability)

Get CSV header.

Parameters:

payloadInfo - CSV payload info object.

headerAvailability - Header availability.

Returns:

Generated CSV header.

getLinesToSkip

public static int getLinesToSkip(HeaderAvailability headerAvailability,
                                 int dataRowsToSkip)

Return lines to skip from CSV content.

Parameters:

headerAvailability - Header availability.

dataRowsToSkip - Data rows to skip.

Returns:

Number of rows to skip from CSV content.

skipColumns

public static Stream<String[]> skipColumns(int columnCount,
                                           String skipColumnsQuery,
                                           Stream<String[]> csvArrayStream,
                                           String[] header)

Skip columns from CSV content.

Parameters:

columnCount - Number of columns in the CSV content.

skipColumnsQuery - Skip columns query.

csvArrayStream - CSV array stream.

header - CSV header.

Returns:

CSV stream with skipped columns.

skipColumnsSingleRow

public static String[] skipColumnsSingleRow(int columnCount,
                                            String columnsToSkip,
                                            String[] row,
                                            String[] header)

Skip columns from the given CSV row.

Parameters:

columnCount - Number of columns in the CSV.

columnsToSkip - Columns to skip.

row - CSV row.

header - CSV header.

Returns:

CSV row of skipped columns.

resolveColumnIndex

public static int resolveColumnIndex(String query,
                                     String[] header)

Get column index by the given query.

Parameters:

query - Column query.

header - CSV header.

Returns:

Index resolved by the given query. -1 if no column is resolved.