org.apache.solr.internal.csv

Class CSVUtils

java.lang.Object

org.apache.solr.internal.csv.CSVUtils

public class CSVUtils
extends java.lang.Object

Utility methods for dealing with CSV files

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.String[][]	EMPTY_DOUBLE_STRING_ARRAY
private static java.lang.String[]	EMPTY_STRING_ARRAY

Constructor Summary

Constructors

Constructor and Description
CSVUtils() CSVUtils instances should NOT be constructed in standard programming.

Method Summary

Modifier and Type	Method and Description
static java.lang.String[][]	parse(java.lang.String s) Parses the given String according to the default CSVStrategy.
static java.lang.String[]	parseLine(java.lang.String s) Parses the first line only according to the default CSVStrategy.
static java.lang.String	printLine(java.lang.String[] values, CSVStrategy strategy) Converts an array of string values into a single CSV line.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_STRING_ARRAY

private static final java.lang.String[] EMPTY_STRING_ARRAY

EMPTY_DOUBLE_STRING_ARRAY

private static final java.lang.String[][] EMPTY_DOUBLE_STRING_ARRAY

Constructor Detail

CSVUtils

public CSVUtils()

CSVUtils instances should NOT be constructed in standard programming.

This constructor is public to permit tools that require a JavaBean instance to operate.

Method Detail

printLine

public static java.lang.String printLine(java.lang.String[] values,
                                         CSVStrategy strategy)

Converts an array of string values into a single CSV line. All null values are converted to the string "null", all strings equal to "null" will additionally get quotes around.

Parameters:

values - the value array

Returns:

the CSV string, will be an empty string if the length of the value array is 0

parse

public static java.lang.String[][] parse(java.lang.String s)
                                  throws java.io.IOException

Parses the given String according to the default CSVStrategy.

Parameters:

s - CSV String to be parsed.

Returns:

parsed String matrix (which is never null)

Throws:

java.io.IOException - in case of error

parseLine

public static java.lang.String[] parseLine(java.lang.String s)
                                    throws java.io.IOException

Parses the first line only according to the default CSVStrategy. Parsing empty string will be handled as valid records containing zero elements, so the following property holds: parseLine("").length == 0.

Parameters:

s - CSV String to be parsed.

Returns:

parsed String vector (which is never null)

Throws:

java.io.IOException - in case of error