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Hello,
I am currently updating to a nightly build of ZK 6 (February 6th). I am now getting an exception on switching tabs for a piece of code that was running fine before.
This is the exception message:
org.zkoss.zel.PropertyNotWritableException: Illegal Syntax for Set Operation
This is the respective fragment of the zul file:
<tabs id="mStructureTabs">
<tab id="mGeneralAttributes" label="${labels.tabs.GeneralAttributes}"
selected="@bind(vm.focusTab eq 'mGeneralAttributes')"
onSelect="@command('switchTab', tab='mGeneralAttributes', tabGroup='RESOURCE')" />
<tab id="mRowAttributes" label="${labels.tabs.RowAttributes}"
selected="@bind(vm.focusTab eq 'mRowAttributes')"
onSelect="@command('switchTab', tab='mRowAttributes', tabGroup='RESOURCE')" />
<tab id="mColumnAttributes" label="${labels.tabs.ColumnAttributes}"
selected="@bind(vm.focusTab eq 'mColumnAttributes')"
onSelect="@command('switchTab', tab='mColumnAttributes', tabGroup='RESOURCE')" />
<tab id="mNodes" label="${labels.tabs.Nodes}"
selected="@bind(vm.focusTab eq 'mNodes')"
onSelect="@command('switchTab', tab='mNodes', tabGroup='NODES')" />
<tab id="mNodeClasses" label="${labels.tabs.NodeClasses}"
onSelect="@command('switchTab', tab='mNodeClasses', tabGroup='CLASSES')" />
<!-- selected="@bind(vm.focusTab eq 'mNodeClasses')" -->
<tab id="mCustomAttributes" label="${labels.tabs.CustomAttributes}"
selected="@bind(vm.focusTab eq 'mCustomAttributes')"
</tabs>
For the classes tab I don't get the exception as the "selected" attribute has been commented out. Thus, the error seems to be in the bind-expression. Has anyone else come across this problem? The selected-property is public and not attempted to be set at all when this exception occurs. It is however set successfully when initializing the page.
Cheers,
David
Can you provide some code for reproducing?
By the way, the syntax @bind will load and "save" specify property ( http://books.zkoss.org/wiki/ZK%20Developer's%20Reference/MVVM/Syntax/Data%20Binding/@bind )
But the syntax of the code is "@bind(vm.focusTab eq 'mGeneralAttributes')" , vm.focusTab eq 'mGeneralAttributes' will be a boolean variable and can't be "Set".
If @bind changes to @load, it might work.
Hi,
now I upgraded to zk 6.0.1 and get a new exception notifying about an empty stack during expression evaluation.
java.util.EmptyStackException >> at java.util.Stack.peek(Stack.java:85) >> at java.util.Stack.pop(Stack.java:67) >> at org.zkoss.bind.xel.zel.PathELResolver.getValue(PathELResolver.java:54) >> at org.zkoss.zel.CompositeELResolver.getValue(CompositeELResolver.java:67) >> at org.zkoss.xel.zel.XelELResolver.getValue(XelELResolver.java:72) >> at org.zkoss.bind.xel.zel.BindELResolver.getValue(BindELResolver.java:75) >> at org.zkoss.zel.impl.parser.AstValue.getValue(AstValue.java:179) >> at org.zkoss.zel.impl.parser.AstEqual.getValue(AstEqual.java:38) >> at org.zkoss.zel.impl.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) >> at org.zkoss.xel.zel.ELXelExpression.evaluate(ELXelExpression.java:40) >> at org.zkoss.bind.impl.BindEvaluatorXImpl.getValue(BindEvaluatorXImpl.java:42) >> at org.zkoss.bind.impl.LoadPropertyBindingImpl.load(LoadPropertyBindingImpl.java:58) >> at org.zkoss.bind.impl.PropertyBindingHandler.doLoadBinding(PropertyBindingHandler.java:171) >> at org.zkoss.bind.impl.PropertyBindingHandler.doLoad(PropertyBindingHandler.java:372) >> at org.zkoss.bind.impl.BinderImpl.loadComponentProperties(BinderImpl.java:1865) >> at org.zkoss.bind.impl.BinderImpl.loadComponent(BinderImpl.java:1847) >> at org.zkoss.bind.impl.BinderImpl.loadComponent(BinderImpl.java:1849) >> at org.zkoss.bind.impl.BinderImpl.loadComponent(BinderImpl.java:1849) >> at org.zkoss.bind.impl.BinderImpl.loadComponent(BinderImpl.java:1849) >> at org.zkoss.bind.BindComposer.doAfterCompose(BindComposer.java:138) >> at com.tn_ag.tnp.tailor.gui.ScreenBindComposer.doAfterCompose(ScreenBindComposer.java:133) >> at org.zkoss.zk.ui.impl.MultiComposer.doAfterCompose(MultiComposer.java:117) >> at org.zkoss.zk.ui.impl.UiEngineImpl.doAfterCompose(UiEngineImpl.java:529) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:824) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:770) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:679) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:741) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:701) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:643) >> at org.zkoss.zk.ui.impl.UiEngineImpl.createComponents(UiEngineImpl.java:1024) >> at org.zkoss.zk.ui.impl.AbstractExecution.createComponents0(AbstractExecution.java:246) >> at org.zkoss.zk.ui.impl.AbstractExecution.createComponents(AbstractExecution.java:238) >> at org.zkoss.zk.ui.Executions.createComponents(Executions.java:179) >> at com.tn_ag.tnp.tailor.gui.LayerComposer.doAfterCompose(LayerComposer.java:272) >> at com.tn_ag.tnp.tailor.gui.LayerComposer.doAfterCompose(LayerComposer.java:1) >> at org.zkoss.zk.ui.impl.UiEngineImpl.doAfterCompose(UiEngineImpl.java:529) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:824) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:770) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:679) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:741) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:701) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:643) >> at org.zkoss.zk.ui.impl.UiEngineImpl.createComponents(UiEngineImpl.java:1024) >> at org.zkoss.zk.ui.impl.AbstractExecution.createComponents0(AbstractExecution.java:246) >> at org.zkoss.zk.ui.impl.AbstractExecution.createComponents(AbstractExecution.java:238) >> at org.zkoss.zk.ui.Executions.createComponents(Executions.java:179) >> at com.tn_ag.tnp.tailor.gui.CenterStage.putOnDesktop(CenterStage.java:199) >> at com.tn_ag.tnp.tailor.gui.explorers.ExplorerUtils.createLayers(ExplorerUtils.java:197) >> at com.tn_ag.tnp.tailor.gui.listener.SwitchExplorerListener.doSwitchExplorer(SwitchExplorerListener.java:133) >> at com.tn_ag.tnp.tailor.gui.listener.SwitchExplorerListener.onEvent(SwitchExplorerListener.java:169) >> at com.tn_ag.tnp.tailor.gui.listener.SwitchExplorerListener.onEvent(SwitchExplorerListener.java:1) >> at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2736) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2707) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2648) >> at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) >> at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:534) >> at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:461)
In BindEvaluatorXImpl.getValue(..) line 42 the expression is
ValueExpression[${vm.focusTab eq 'mGeneralAttributes'}]I wonder whether anyone came across this issue during upgrade?
Cheers,
David
Asked: 2012-02-10 13:34:01 +0800
Seen: 378 times
Last updated: Jun 06 '12