Examples of org.apache.tapestry.ValidationTracker

org.apache.tapestry.ValidationTracker
Tracks information related to user input validations. This information is:
- The input values provided by the user.
- Any validation exceptions associated with input fields.
The tracker must differentiate between components (which will implement the {@link Field}interfaces) and fields. It is a one to many relationship, because each field may be called upon to render itself multiple times within a request, because of {@link Loop} or other similarcomponents.
Internally, the tracker indexes its information in terms of the {@link Field#getElementName()}for each rendering of the component (the mechanics of Tapestry ensures that this is unique within the form).
Validation trackers must be serializable, as they will almost always be stored into the HttpSession.
Trackers are used by only a single form within a single page; they are not threadsafe.

    {
        FormSupport formSupport = mockFormSupport();
        MultipartDecoder decoder = mockMultipartDecoder();
        UploadedFile uploadedFile = mockUploadedFile();
        FieldValidator<Object> validate = mockFieldValidator();
        ValidationTracker tracker = mockValidationTracker();


        Upload component = new Upload(null, validate, decoder, tracker);


        expect(decoder.getFileUpload("test")).andReturn(uploadedFile);
        expect(uploadedFile.getFileName()).andReturn("test").atLeastOnce();
        validate.validate(uploadedFile);
        expectLastCall().andThrow(new ValidationException("an error"));
        tracker.recordError(component, "an error");
        replay();


        component.processSubmission(formSupport, "test");


        verify();

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    public void label_error_no_existing_class_attribute()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = mockEnvironment();
        Field field = mockField();
        ValidationTracker tracker = mockValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);


        replay();

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    public void label_error_with_existing_class_attribute()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = mockEnvironment();
        Field field = mockField();
        ValidationTracker tracker = mockValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);


        replay();

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    public void field_error()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = mockEnvironment();
        Field field = mockField();
        ValidationTracker tracker = mockValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);
        train_peekRequired(env, MarkupWriter.class, writer);

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    @Test
    public void field_ok()
    {
        Environment env = mockEnvironment();
        Field field = mockField();
        ValidationTracker tracker = mockValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, false);


        replay();

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    @Test
    public void label_when_field_not_in_error()
    {
        Environment env = mockEnvironment();
        Field field = mockField();
        ValidationTracker tracker = mockValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, false);


        replay();

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    {
        FormSupport formSupport = mockFormSupport();
        MultipartDecoder decoder = mockMultipartDecoder();
        UploadedFile uploadedFile = mockUploadedFile();
        FieldValidator<Object> validate = mockFieldValidator();
        ValidationTracker tracker = mockValidationTracker();


        Upload component = new Upload(null, validate, decoder, tracker, null);


        expect(decoder.getFileUpload("test")).andReturn(uploadedFile);
        expect(uploadedFile.getFileName()).andReturn("test").atLeastOnce();
        validate.validate(uploadedFile);
        expectLastCall().andThrow(new ValidationException("an error"));
        tracker.recordError(component, "an error");
        replay();


        component.processSubmission(formSupport, "test");


        verify();

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                throw new RuntimeException(ex);
            }


            heartbeat.end();


            ValidationTracker tracker = _environment.peek(ValidationTracker.class);


            // Let the listeners peform any final validations


            // Update through the parameter because the tracker has almost certainly changed
            // internal state.


            _tracker = tracker;


            _resources.triggerEvent(VALIDATE, context, handler);


            if (holder.hasValue()) return holder.get();


            _formSupport.executeDeferred();


            // Let the listeners know about overall success or failure. Most listeners fall into
            // one of those two camps.


            // If the tracker has no errors, then clear it of any input values
            // as well, so that the next page render will be "clean" and show
            // true persistent data, not value from the previous form submission.


            if (!_tracker.getHasErrors()) _tracker.clear();


            _resources.triggerEvent(tracker.getHasErrors() ? FAILURE : SUCCESS, context, handler);


            // Lastly, tell anyone whose interested that the form is completely submitted.


            if (holder.hasValue()) return holder.get();

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    /**
     * A convienience for invoking {@link ValidationTracker#recordError(String)}.
     */
    public void recordError(String errorMessage)
    {
        ValidationTracker tracker = _tracker;


        tracker.recordError(errorMessage);


        _tracker = tracker;
    }

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    /**
     * A convienience for invoking {@link ValidationTracker#recordError(Field, String)}.
     */
    public void recordError(Field field, String errorMessage)
    {
        ValidationTracker tracker = _tracker;


        tracker.recordError(field, errorMessage);


        _tracker = tracker;
    }

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Related Classes of org.apache.tapestry.ValidationTracker

org.apache.tapestry.corelib.components.Form

org.apache.tapestry.corelib.components.FormTest

org.apache.tapestry.internal.DefaultValidationDecorator

org.apache.tapestry.internal.DefaultValidationDecoratorTest

org.apache.tapestry.upload.components.UploadTest

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