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29.10. Annotations for use with JSF

The following annotations make it easier to work with JSF.
@Converter
Allows a Seam component to act as a JSF converter. The annotated class must be a Seam component, and must implement javax.faces.convert.Converter.
  • id — the JSF converter ID. Defaults to the component name.
  • forClass — if specified, registers this component as the default converter for a type.
@Validator
Allows a Seam component to act as a JSF validator. The annotated class must be a Seam component, and must implement javax.faces.validator.Validator.
  • id — the JSF validator ID. Defaults to the component name.

29.10.1. Annotations for use with dataTable
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The following annotations make it easy to implement clickable lists backed by a stateful session bean. They appear on attributes.
@DataModel 
@DataModel("variableName")
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Outjects a property of type List, Map, Set or Object[] as a JSF DataModel into the scope of the owning component (or the EVENT scope, if the owning component is STATELESS). In the case of Map, each row of the DataModel is a Map.Entry.
  • value — name of the conversation context variable. Default to the attribute name.
  • scope — if scope=ScopeType.PAGE is explicitly specified, the DataModel will be kept in the PAGE context.
@DataModelSelection 
@DataModelSelection
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Injects the selected value from the JSF DataModel. (This is the element of the underlying collection, or the map value.) If only one @DataModel attribute is defined for a component, the selected value from that DataModel will be injected. Otherwise, the component name of each @DataModel must be specified in the value attribute for each @DataModelSelection.
If PAGE scope is specified on the associated @DataModel, then the associated DataModel will be injected in addition to the DataModel Selection. In this case, if the property annotated with @DataModel is a getter method, then a setter method for the property must also be part of the Business API of the containing Seam Component.
  • value — name of the conversation context variable. Not needed if there is exactly one @DataModel in the component.
@DataModelSelectionIndex 
@DataModelSelectionIndex
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Exposes the selection index of the JSF DataModel as an attribute of the component. (This is the row number of the underlying collection, or the map key.) If only one @DataModel attribute is defined for a component, the selected value from that DataModel will be injected. Otherwise, the component name of each @DataModel must be specified in the value attribute for each @DataModelSelectionIndex.
  • value — name of the conversation context variable. This is not required if there is exactly one @DataModel in the component.
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