RowMustHaveSameNumberOfColumnsAsFirstRowValidator

java.lang.Object
- com.opencsv.validators.RowMustHaveSameNumberOfColumnsAsFirstRowValidator

All Implemented Interfaces:

RowValidator
```
public class RowMustHaveSameNumberOfColumnsAsFirstRowValidator
extends java.lang.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

Field Summary

Fields
Modifier and Type Field Description

private static int NO_ROWS

private int numRows

Constructor Summary

Constructors
Constructor Description

RowMustHaveSameNumberOfColumnsAsFirstRowValidator()
Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private boolean`	`firstRowNotSetYet()`
`boolean`	`isValid(java.lang.String[] row)`	Performs the validation check on the string and returns the result.
`void`	`validate(java.lang.String[] row)`	Performs the validation check on the row (an array of `String`s) and throws an exception if invalid.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NO_ROWS
```
private static final int NO_ROWS
```
    See Also:
    
    Constant Field Values
  - numRows
```
private int numRows
```
- Constructor Detail
  - RowMustHaveSameNumberOfColumnsAsFirstRowValidator
```
public RowMustHaveSameNumberOfColumnsAsFirstRowValidator()
```
    Default constructor.
- Method Detail
  - isValid
```
public boolean isValid(java.lang.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(java.lang.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.
  - firstRowNotSetYet
```
private boolean firstRowNotSetYet()
```