uk.org.ogsadai.activity
Class ActivityClassDocumentValidator

java.lang.Object
  |
  +--uk.org.ogsadai.common.DocumentValidator
        |
        +--uk.org.ogsadai.activity.ActivityClassDocumentValidator

public class ActivityClassDocumentValidator

extends DocumentValidator

This DocumentValidator scans through the activity elements contained in an activity configuration document and validates the specified implementation classes.

The following must be satisfied in order for an implementation class to be deemed valid:

• the class is on the classpath and can be accessed
• the class inherits from the base Activity class
• if the activity makes use of an individual activity configuration file, then the implementation class must also implement the ActivityConfigurationCreator interface.

If an activity implementation class is deemed to be invalid, a DocumentValidationException is raised.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String

COPYRIGHT_NOTICE Copyright statement

Fields inherited from class uk.org.ogsadai.common.DocumentValidator

Constructor Summary

ActivityClassDocumentValidator()

Method Summary

protected void	performValidation(org.w3c.dom.Document document) Validates the specified document and throws a DocumentValidationException with a desctiptive error message if the document is invalid.
private void	validateImplementation(java.lang.String implementation, boolean usesConfigFile) Validates the implementation class, making sure is accessible and that it inherits from Activity.

Methods inherited from class uk.org.ogsadai.common.DocumentValidator

setSuccessor, validate

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

Copyright statement

See Also:

Constant Field Values

Constructor Detail

ActivityClassDocumentValidator

public ActivityClassDocumentValidator()

Method Detail

performValidation

protected void performValidation(org.w3c.dom.Document document)
                          throws DocumentValidationException

Description copied from class: DocumentValidator

Validates the specified document and throws a DocumentValidationException with a desctiptive error message if the document is invalid.

Specified by:

performValidation in class DocumentValidator

Parameters:

document - Document to validate.

Throws:

DocumentValidationException - if the document is invalid.

validateImplementation

private void validateImplementation(java.lang.String implementation,
                                    boolean usesConfigFile)
                             throws DocumentValidationException

Validates the implementation class, making sure is accessible and that it inherits from Activity.

Parameters:

implementation - The implementation class name.

usesConfigFile - Indicates whether or not the activity uses an individual configuration file.

Throws:

DocumentValidationException - if the class cannot be loaded or does not inherit from Activity and implement the neccessary interface.