io.cdap.wrangler.validator

Class ColumnNameValidator

java.lang.Object

io.cdap.wrangler.validator.ColumnNameValidator

All Implemented Interfaces:

Validator<String>

public class ColumnNameValidator
extends Object
implements Validator<String>

This class performs validation on the column names of the record.

Following are the checks that this validator performs on the column.

• Column name is a an identifier that is a sequence of alphaNumeric and under_score characters or a sequence.
• Column name is a non-reserved word. Check reserved-column-names.txt for the list of names.
• Column name is less than 255 characters.

Constructor Summary

Constructors

Constructor and Description
ColumnNameValidator()

Method Summary

Modifier and Type	Method and Description
void	initialize() Initializes this validator.
void	validate(String name) Validates the T properties.

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnNameValidator

public ColumnNameValidator()

Method Detail

initialize

public void initialize()
                throws Exception

Initializes this validator.

Specified by:

initialize in interface Validator<String>

Throws:

Exception - thrown when reserved words file is not accessible.

validate

public void validate(String name)
              throws ValidatorException

Validates the T properties.

Specified by:

validate in interface Validator<String>

Parameters:

name - to be validated.

Throws:

ValidatorException - thrown when there are issues with validation.