Appendix A. Flow Definition Language 1.0 to 2.0 Mappings
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## Appendix A. Flow Definition Language 1.0 to 2.0 Mappings

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 |

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