opencsv 5.12.0 · com.opencsv.validators.RowMustHaveSameNumberOfColumnsAsFirstRowValidator

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.

Field Summary

Modifier and Type	Field and Description
private static final int	NO_ROWS
private int	numRows

Constructor Summary

Access	Constructor and Description
public	RowMustHaveSameNumberOfColumnsAsFirstRowValidator() Default constructor.

Method Summary

Modifier and Type	Method and Description
private boolean	firstRowNotSetYet()
public boolean	isValid(String[] row) Implements com.opencsv.validators.RowValidator.isValid. Performs the validation check on the string and returns the result.
public void	validate(String[] row) Implements com.opencsv.validators.RowValidator.validate. Performs the validation check on the row (an array of `String`s) and throws an exception if invalid.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

NO_ROWS	back to summary
private static final int NO_ROWS

numRows	back to summary
private int numRows

Constructor Detail

RowMustHaveSameNumberOfColumnsAsFirstRowValidator	back to summary
public RowMustHaveSameNumberOfColumnsAsFirstRowValidator() Default constructor.

Method Detail

firstRowNotSetYet	back to summary
private boolean firstRowNotSetYet()

isValid	back to summary
public boolean isValid(String[] row) Implements com.opencsv.validators.RowValidator.isValid. Doc from com.opencsv.validators.RowValidator.isValid. 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. Annotations @Override

isValid

back to summary

public boolean isValid(String[] row)

Implements com.opencsv.validators.RowValidator.isValid.

Doc from com.opencsv.validators.RowValidator.isValid.

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.

Annotations

@Override

validate back to summary

validate	back to summary
public void validate(String[] row) throws CsvValidationException Implements com.opencsv.validators.RowValidator.validate. Doc from com.opencsv.validators.RowValidator.validate. Performs the validation check on the row (an array of `String`s) and throws an exception if invalid. Annotations @Override Exceptions CsvValidationException: Thrown if invalid. Should contain a message describing the error.

public void validate(String[] row) throws CsvValidationException

Implements com.opencsv.validators.RowValidator.validate.

Doc from com.opencsv.validators.RowValidator.validate.

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