The flow definition language has changed since the 1.0 release. This is a listing of the language elements in the 1.0 release, and how they map to elements in the 2.0 release. While most of the changes are semantic, there are a few structural changes. Please see the upgrade guide for more details about changes between Web Flow 1.0 and 2.0.
Table A.1. Mappings
| SWF 1.0 | SWF 2.0 | Comments | ||
|---|---|---|---|---|
| action | * | use <evaluate /> | ||
| bean | * | |||
| name | * | |||
| method | * | |||
| action-state | action-state | |||
| id | id | |||
| * | parent | |||
| argument | * | use <evaluate expression="func(arg1, arg2, ...)"/> | ||
| expression | ||||
| parameter-type | ||||
| attribute | attribute | |||
| name | name | |||
| type | type | |||
| value | value | |||
| attribute-mapper | * | input and output elements can be in flows or subflows directly | ||
| bean | * | now subflow-attribute-mapper attribute on subflow-state | ||
| bean-action | * | use <evaluate /> | ||
| bean | * | |||
| name | * | |||
| method | * | |||
| decision-state | decision-state | |||
| id | id | |||
| * | parent | |||
| end-actions | on-end | |||
| end-state | end-state | |||
| id | id | |||
| view | view | |||
| * | parent | |||
| * | commit | |||
| entry-actions | on-entry | |||
| evaluate-action | evaluate | |||
| expression | expression | |||
| name | * | use <evaluate ...> <attribute name=”name” value="..." /> </evaluate> | ||
| * | result | |||
| * | result-type | |||
| evaluation-result | * | use <evaluate result="..." /> | ||
| name | * | |||
| scope | * | |||
| exception-handler | exception-handler | |||
| bean | bean | |||
| exit-actions | on-exit | |||
| flow | flow | |||
| * | start-state | |||
| * | parent | |||
| * | abstract | |||
| global-transitions | global-transitions | |||
| if | if | |||
| test | test | |||
| then | then | |||
| else | else | |||
| import | bean-import | |||
| resource | resource | |||
| inline-flow | * | convert to new top-level flow | ||
| id | * | |||
| input-attribute | input | |||
| name | name | |||
| scope | * | prefix name with scope <input name="flowScope.foo" /> | ||
| required | required | |||
| * | type | |||
| * | value | |||
| input-mapper | * | inputs can be in flows and subflows directly | ||
| mapping | input or output | |||
| source | name or value | name when in flow element, value when in subflow-state element | ||
| target | name or value | value when in flow element, name when in subflow-state element | ||
| target-collection | * | no longer supported | ||
| from | * | detected automatically | ||
| to | type | |||
| required | required | |||
| method-argument | * | use <evaluate expression="func(arg1, arg2, ...)"/> | ||
| method-result | * | use <evaluate result="..." /> | ||
| name | * | |||
| scope | * | |||
| output-attribute | output | |||
| name | name | |||
| scope | * | prefix name with scope <output name="flowScope.foo" /> | ||
| required | required | |||
| * | type | |||
| * | value | |||
| output-mapper | * | output can be in flows and subflows directly | ||
| render-actions | on-render | |||
| set | set | |||
| attribute | name | |||
| scope | * | prefix name with scope <set name="flowScope.foo" /> | ||
| value | value | |||
| name | * | use <set ...> <attribute name=”name” value="..." /> </set> | ||
| * | type | |||
| start-actions | on-start | |||
| start-state | * | now <flow start-state="...">, or defaults to the first state in the flow | ||
| idref | * | |||
| subflow-state | subflow-state | |||
| id | id | |||
| flow | subflow | |||
| * | parent | |||
| * | subflow-attribute-mapper | |||
| transition | transition | |||
| on | on | |||
| on-exception | on-exception | |||
| to | to | |||
| * | bind | |||
| value | value | |||
| var | var | |||
| name | name | |||
| class | class | |||
| scope | * | always flow scope | ||
| bean | * | all Spring beans can be resolved with EL | ||
| view-state | view-state | |||
| id | id | |||
| view | view | |||
| * | parent | |||
| * | redirect | |||
| * | popup | |||
| * | model | |||
| * | history | |||
| * | persistence-context | |||
| * | render | |||
| * | fragments | |||
| * | secured | |||
| * | attributes | |||
| * | match | |||