hudson.util
Class FormValidation.URLCheck

java.lang.Object
  hudson.util.FormValidation.URLCheck

Enclosing class:

FormValidation

public abstract static class FormValidation.URLCheck
extends Object

Convenient base class for checking the validity of URLs.

This allows the check method to call various utility methods in a concise syntax.

Constructor Summary

FormValidation.URLCheck()

Method Summary

protected abstract FormValidation	check() Implement the actual form validation logic, by using other convenience methosd defined in this class.
protected boolean	findText(BufferedReader in, String literal) Finds the string literal from the given reader.
protected FormValidation	handleIOException(String url, IOException e) Calls the FormValidation.error(String) method with a reasonable error message.
protected BufferedReader	open(URL url) Opens the given URL and reads text content from it.

Methods inherited from class java.lang.Object

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

Constructor Detail

FormValidation.URLCheck

public FormValidation.URLCheck()

Method Detail

open

protected BufferedReader open(URL url)
                       throws IOException

Opens the given URL and reads text content from it. This method honors Content-type header.

Throws:

IOException

findText

protected boolean findText(BufferedReader in,
                           String literal)
                    throws IOException

Finds the string literal from the given reader.

Returns:

true if found, false otherwise.

Throws:

IOException

handleIOException

protected FormValidation handleIOException(String url,
                                           IOException e)
                                    throws IOException,
                                           javax.servlet.ServletException

Calls the FormValidation.error(String) method with a reasonable error message. Use this method when the open(URL) or findText(BufferedReader, String) fails.

Parameters:

url - Pass in the URL that was connected. Used for error diagnosis.

Throws:

IOException

javax.servlet.ServletException

check

protected abstract FormValidation check()
                                 throws IOException,
                                        javax.servlet.ServletException

Implement the actual form validation logic, by using other convenience methosd defined in this class. If you are not using any of those, you don't need to extend from this class.

Throws:

IOException

javax.servlet.ServletException