Package org.apache.nifi.processor.util

Class URLValidator

java.lang.Object

org.apache.nifi.processor.util.URLValidator

All Implemented Interfaces:

Validator

public class URLValidator
extends Object
implements Validator

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	HOST_IPV4_PATTERN
private static final String	HOST_IPV6_PATTERN
private static final String	HOST_PATTERN
private static final String	LAST_PATTERN
private static final String	PATH_PATTERN
private static final String	PORT_PATTERN
private static final String	QUERY_PATTERN
private static final String	SCHEME_PATTERN
private static final Pattern	URI_PATTERN
private static final String	USERINFO_PATTERN

Fields inherited from interface org.apache.nifi.components.Validator

INVALID, VALID

Constructor Summary

Constructors

Constructor	Description
URLValidator()

Method Summary

Modifier and Type	Method	Description
static URL	createURL(String url)	This method provides an alternative to the use of java.net.URI's single argument constructor and 'create' method.
ValidationResult	validate(String subject, String input, ValidationContext context)

Methods inherited from class java.lang.Object

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

Field Details

SCHEME_PATTERN

private static final String SCHEME_PATTERN

See Also:

• Constant Field Values

USERINFO_PATTERN

private static final String USERINFO_PATTERN

See Also:

• Constant Field Values

HOST_IPV4_PATTERN

private static final String HOST_IPV4_PATTERN

See Also:

• Constant Field Values

HOST_IPV6_PATTERN

private static final String HOST_IPV6_PATTERN

See Also:

• Constant Field Values

HOST_PATTERN

private static final String HOST_PATTERN

See Also:

• Constant Field Values

PORT_PATTERN

private static final String PORT_PATTERN

See Also:

• Constant Field Values

PATH_PATTERN

private static final String PATH_PATTERN

See Also:

• Constant Field Values

QUERY_PATTERN

private static final String QUERY_PATTERN

See Also:

• Constant Field Values

LAST_PATTERN

private static final String LAST_PATTERN

See Also:

• Constant Field Values

URI_PATTERN

private static final Pattern URI_PATTERN

Constructor Details

URLValidator

public URLValidator()

Method Details

validate

public ValidationResult validate(String subject,
 String input,
 ValidationContext context)

Specified by:

validate in interface Validator

Parameters:

subject - what is being validated

input - the string to be validated

context - the ValidationContext to use when validating properties

Returns:

ValidationResult

createURL

public static URL createURL(String url)
                     throws MalformedURLException

This method provides an alternative to the use of java.net.URI's single argument constructor and 'create' method. The drawbacks of the java.net.URI's single argument constructor and 'create' method are:

• They do not provide quoting in the path section for any character not in the unreserved, punct, escaped, or other categories, and not equal to the slash character ('/') or the commercial-at character ('@').
• They do not provide quoting for any illegal characters found in the query and fragment sections.

On the other hand, java.net.URI's seven argument constructor provides these quoting capabilities. In order to take advantage of this constructor, this method parses the given string into the arguments needed thereby allowing for instantiating a java.net.URI with the quoting of all illegal characters.

Parameters:

url - String representing a URL.

Returns:

Instance of java.net.URL

Throws:

MalformedURLException - if unable to create a URL from the given String representation