com.opencsv.validators

Class RowMustHaveSameNumberOfColumnsAsFirstRowValidator

java.lang.Object

com.opencsv.validators.RowMustHaveSameNumberOfColumnsAsFirstRowValidator

All Implemented Interfaces:

RowValidator

public class RowMustHaveSameNumberOfColumnsAsFirstRowValidator
extends Object
implements RowValidator

This validator is used when the number of columns is not neccessarily known but must be consistent. The first row validated will always be considered valid, unless null or empty, and after that the each subsequent row must have the same number of columns as the first.

Arrays that are empty or null are considered to have 0 elements. An empty or null first row is considered invalid.

As with all row validators the assumption is you have control of the data and have skipped any initial empty lines. If you have data that has empty lines or separators lines in your data then you should not use this class. Either extend it or write your own validator.

Since:

5.0

Author:

Scott Conway

Constructor Summary

Constructors

Constructor and Description
RowMustHaveSameNumberOfColumnsAsFirstRowValidator() Default constructor.

Method Summary

Modifier and Type	Method and Description
boolean	isValid(String[] row) Performs the validation check on the string and returns the result.
void	validate(String[] row) Performs the validation check on the row (an array of Strings) and throws an exception if invalid.

Methods inherited from class java.lang.Object

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

Constructor Detail

RowMustHaveSameNumberOfColumnsAsFirstRowValidator

public RowMustHaveSameNumberOfColumnsAsFirstRowValidator()

Default constructor.

Method Detail

isValid

public boolean isValid(String[] row)

Description copied from interface: RowValidator

Performs the validation check on the string and returns the result. While not called directly in opencsv it is in the interface to provide an easy way to test if the validator is functioning properly.

Specified by:

isValid in interface RowValidator

Parameters:

row - Array of strings to be validated

Returns:

true if the row is valid, false otherwise

validate

public void validate(String[] row)
              throws CsvValidationException

Description copied from interface: RowValidator

Performs the validation check on the row (an array of Strings) and throws an exception if invalid.

Specified by:

validate in interface RowValidator

Parameters:

row - Array of Strings to be validated.

Throws:

CsvValidationException - Thrown if invalid. Should contain a message describing the error.