orbeon - 是什么导致 Orbeon Forms 对 XForm 进行无休止的重新验证，直到它得到一个 stackoverflow

Question

我正在使用 Orbeon Forms CE 版本 orbeon-4.0.0.M11.201210030654-CE。

我有一个带有多个实例的 XForm (XHTML)，我在其中一个实例上使用 required="true()" 进行了绑定，并使用 xxforms-invalid 和 xxforms-valid 来切换案例。以下是我的 xform 中的一些代码示例。

<xforms:instance id="teaching-load-instance" src="oxf:/apps/uis-common/model/uis-teaching-load-xforms-instance.xml"/>

<xforms:bind nodeset="instance('teaching-load-instance')/teaching_load">
    <xforms:bind nodeset="module_id" required="true()"/>
</xforms:bind>

<xforms:action ev:event="xxforms-invalid" ev:observer="teaching-load-instance">
    <xforms:toggle case="invalid-form-case"/>
</xforms:action>

<xforms:action ev:event="xxforms-valid" ev:observer="teaching-load-instance">
    <xforms:toggle case="valid-form-case"/>
</xforms:action>

访问此 xform 页面时，将引发 stackoverflow 错误。

这是来自 orbeon.log 文件的调试日志。

2012-10-23 21:42:42,470 DEBUG XFormsServer  -         start dispatching {name: "xxforms-valid", target: "month-instance"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -           start performing default action {}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -           end performing default action {time (ms): "0"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -         end dispatching {time (ms): "0"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -         start dispatching {name: "xxforms-valid", target: "verification-instance"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -           start performing default action {}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -           end performing default action {time (ms): "0"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -         end dispatching {time (ms): "0"}
2012-10-23 21:42:42,470 DEBUG XFormsServer  -         start dispatching {name: "xxforms-valid", target: "modules-instance"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -           start performing default action {}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -           end performing default action {time (ms): "0"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -         end dispatching {time (ms): "1"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -         start dispatching {name: "xxforms-invalid", target: "teaching-load-instance"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -           start handler {name: "xxforms-invalid", phase: "target", observer: "teaching-load-instance"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -             interpreter - start executing {action name: "xforms:action"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -               interpreter - start executing {action name: "xforms:toggle"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                 start dispatching {name: "xforms-revalidate", target: "xf-2"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                   start performing default action {}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                     validation - start performing revalidate {model id: "xf-2"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "triggers-instance"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,471 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "parameters-instance"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       end dispatching {time (ms): "1"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "check-user-instance"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "main"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "temp"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "session"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,472 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "status-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       end dispatching {time (ms): "1"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "month-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "verification-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-valid", target: "modules-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         start performing default action {}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         end performing default action {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       end dispatching {time (ms): "0"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                       start dispatching {name: "xxforms-invalid", target: "teaching-load-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                         start handler {name: "xxforms-invalid", phase: "target", observer: "teaching-load-instance"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                           interpreter - start executing {action name: "xforms:action"}
2012-10-23 21:42:42,473 DEBUG XFormsServer  -                             interpreter - start executing {action name: "xforms:toggle"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                               start dispatching {name: "xforms-revalidate", target: "xf-2"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                 start performing default action {}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                   validation - start performing revalidate {model id: "xf-2"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "triggers-instance"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "parameters-instance"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "check-user-instance"}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,474 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     end dispatching {time (ms): "1"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "main"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "temp"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "session"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "status-instance"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,475 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "month-instance"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     end dispatching {time (ms): "1"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "verification-instance"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-valid", target: "modules-instance"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       start performing default action {}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       end performing default action {time (ms): "0"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     end dispatching {time (ms): "0"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                     start dispatching {name: "xxforms-invalid", target: "teaching-load-instance"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                       start handler {name: "xxforms-invalid", phase: "target", observer: "teaching-load-instance"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                         interpreter - start executing {action name: "xforms:action"}
2012-10-23 21:42:42,476 DEBUG XFormsServer  -                                           interpreter - start executing {action name: "xforms:toggle"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                             start dispatching {name: "xforms-revalidate", target: "xf-2"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                               start performing default action {}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                 validation - start performing revalidate {model id: "xf-2"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                   start dispatching {name: "xxforms-valid", target: "triggers-instance"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                     start performing default action {}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                     end performing default action {time (ms): "0"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                   end dispatching {time (ms): "0"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                   start dispatching {name: "xxforms-valid", target: "parameters-instance"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                     start performing default action {}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                     end performing default action {time (ms): "0"}
2012-10-23 21:42:42,477 DEBUG XFormsServer  -                                                   end dispatching {time (ms): "0"}

score 1 · Accepted Answer

您可以在 XForms 中创建无限循环，但在这种情况下，您似乎遇到了 XForms 引擎中的错误。如果情况没有改变，xf:toggle则应该没有效果。我为此填写了一个问题，您可以跟踪该问题。

自 Orbeon Forms 4.0 M13 起，此问题已得到修复。对于早期版本，您可以通过if在xf:toggle. 假设您的开关 id 是my-switch：

<xforms:toggle if="xxforms:case('my-switch') != 'invalid-form-case'"
               case="invalid-form-case"/>

加上一个等价的if加到另一个<xforms:toggle case="valid-form-case"/>。

orbeon - 是什么导致 Orbeon Forms 对 XForm 进行无休止的重新验证，直到它得到一个 stackoverflow

1 回答 1

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