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@Conversion
The Conversion annotation must be applied at Type level.
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@TypeConversion
Parameter | Required | Default | Notes |
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property | no | The annotated property name | The optional property name used within TYPE or PACKAGE level annotations. |
type | no | ConversionType.CLASS | Enum value of ConversionType. Determines whether the conversion should be applied at application or class level. |
converter | yes |
| The class of the TypeConverter to be used as converter. |
rule | no | ConversionRule.PROPERTY | Enum value of ConversionRule. The ConversionRule can be a property, a Collection or a Map. |
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@Validations
If you want to use several annotations of the same type, these annotation must be nested within the @Validations() annotation.
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@RequiredFieldValidator
This validator checks that a field is non-null.
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@RequiredStringValidator
This validator checks that a String field is not empty (i.e. non-null with a length > 0).
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@StringLengthFieldValidator
This validator checks that a String field is of the right length. It assumes that the field is a String.
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@StringRegexValidator
This validator checks that a String field matches a configure Regular Expression, if it is not an empty String.
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@EmailValidator
This validator checks that a field is a valid e-mail address if it contains a non-empty String.
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@UrlValidator
This validator checks that a field is a valid URL.
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@IntRangeFieldValidator
This validator checks that a numeric field has a value within a specified range.
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@DateRangeFieldValidator
This validator checks that a date field has a value within a specified range.
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@ConversionErrorFieldValidator
This validator checks if there are any conversion errors for a field and applies them if they exist. See Type Conversion Error Handling for details.
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@ExpressionValidator
This validator uses an OGNL expression to perform its validation. The error message will be added to the action if the expression returns false when it is evaluated against the value stack.
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@FieldExpressionValidator
This validator uses an OGNL expression to perform its validation. The error message will be added to the field if the expression returns false when it is evaluated against the value stack.
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@VisitorFieldValidator
The validator allows you to forward validation to object properties of your action using the objects own validation files. This allows you to use the ModelDriven development pattern and manage your validations for your models in one place, where they belong, next to your model classes. The VisitorFieldValidator can handle either simple Object properties, Collections of Objects, or Arrays.
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This will use the model's validation rules and any errors messages will be applied directly (nothing is prefixed because of the empty message).
More Complex Examples
An Annotated Interface
- Mark the interface with @Validation()
- Apply standard or custom annoations at method level
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