Cannot modify a property of a sealed object: unique?

[targa2000]

trying to run todo-list sample dashlet from ixxus and got following error:

Cannot modify a property of a sealed object: unique

code in question:  todolist.get.js

// call over to Alfresco and fetch the todo list
var connector = remote.connect("alfresco");
var data = connector.get("/todo");

// create json object from data
var results = eval('(' + data + ')');

model.tasks = results["tasks"];

// do array unique thingy
var catArray = results["categories"];

// error occurs in line below vvv
Array.prototype.unique = function () {
   var r = new Array();
   o:for(var i = 0, n = this.length; i < n; i++)
   {
      for(var x = 0, y = r.length; x < y; x++)
      {
         if(r[x]==this[i].category)
         {
            continue o;
         }
      }
      r[r.length] = this[i].category;
   }
   return r;
}
if (catArray) {
    var unique = catArray.unique();
    model.cats = unique;
} else {
    model.cats = [];
}
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any ideas?

full error message:

An error has occured in the Share component: /share/service/todo/todolist.
It responded with a status of 500 - Internal Error.
Error Code Information: 500 - An error inside the HTTP server which prevented it from fulfilling the request.
Error Message: 02260001 Failed to load script '/org/alfresco/components/dashlets/todo/todolist.get.js (in classpath store file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts)': 02260000 Cannot modify a property of a sealed object: unique. (file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js#14)
Server: Alfresco Enterprise v3.2.0 (r 416) schema 3.400
Time: 26.03.2010 14:25:04
Click here to view full technical information on the error.
Exception: org.mozilla.javascript.EvaluatorException - Cannot modify a property of a sealed object: unique. (file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js#14)
org.mozilla.javascript.DefaultErrorReporter.runtimeError(DefaultErrorReporter.java:109)
org.mozilla.javascript.Context.reportRuntimeError(Context.java:1030)
org.mozilla.javascript.Context.reportRuntimeError(Context.java:1086)
org.mozilla.javascript.Context.reportRuntimeError1(Context.java:1049)
org.mozilla.javascript.ScriptableObject.checkNotSealed(ScriptableObject.java:1524)
org.mozilla.javascript.ScriptableObject.putImpl(ScriptableObject.java:1991)
org.mozilla.javascript.ScriptableObject.put(ScriptableObject.java:312)
org.mozilla.javascript.IdScriptableObject.put(IdScriptableObject.java:419)
org.mozilla.javascript.NativeArray.put(NativeArray.java:288)
org.mozilla.javascript.ScriptableObject.putProperty(ScriptableObject.java:1656)
org.mozilla.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java:1477)
org.mozilla.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java:1467)
org.mozilla.javascript.gen.c12._c0(file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js:14)
org.mozilla.javascript.gen.c12.call(file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js)
org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:393)
org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:2834)
org.mozilla.javascript.gen.c12.call(file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js)
org.mozilla.javascript.gen.c12.exec(file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js)
org.alfresco.web.scripts.PresentationScriptProcessor.executeScriptImpl(PresentationScriptProcessor.java:314)
org.alfresco.web.scripts.PresentationScriptProcessor.executeScript(PresentationScriptProcessor.java:189)
org.alfresco.web.scripts.AbstractWebScript.executeScript(AbstractWebScript.java:819)
org.alfresco.web.scripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:90)
org.alfresco.web.scripts.PresentationContainer.executeScript(PresentationContainer.java:65)
org.alfresco.web.scripts.LocalWebScriptRuntimeContainer.executeScript(LocalWebScriptRuntimeContainer.java:192)
org.alfresco.web.scripts.AbstractRuntime.executeScript(AbstractRuntime.java:306)
org.alfresco.web.scripts.AbstractRuntime.executeScript(AbstractRuntime.java:183)
org.alfresco.web.scripts.WebScriptProcessor.executeBody(WebScriptProcessor.java:329)
org.alfresco.web.framework.render.AbstractProcessor.execute(AbstractProcessor.java:85)
org.alfresco.web.framework.render.RenderHelper.processComponent(RenderHelper.java:348)
org.alfresco.web.framework.render.RenderUtil.renderRawComponent(RenderUtil.java:451)
org.alfresco.web.framework.render.RenderUtil.renderRawComponent(RenderUtil.java:434)
org.alfresco.web.framework.render.bean.ComponentRenderer.body(ComponentRenderer.java:135)
org.alfresco.web.framework.render.RenderUtil.renderRegionComponents(RenderUtil.java:328)
org.alfresco.web.site.taglib.RegionIncludeTag.doStartTag(RegionIncludeTag.java:43)
org.alfresco.tools.TagUtil.execute(TagUtil.java:147)
org.alfresco.tools.TagUtil.execute(TagUtil.java:81)
org.alfresco.web.scripts.FreemarkerTagSupportDirective.executeTag(FreemarkerTagSupportDirective.java:89)
org.alfresco.web.scripts.GenericFreemarkerTagDirective.execute(GenericFreemarkerTagDirective.java:127)
freemarker.core.Environment.visit(Environment.java:261)
freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Environment.process(Environment.java:188)
freemarker.template.Template.process(Template.java:237)
org.alfresco.web.scripts.PresentationTemplateProcessor.process(PresentationTemplateProcessor.java:185)
org.alfresco.web.scripts.FreemarkerProcessor.executeBody(FreemarkerProcessor.java:266)
org.alfresco.web.framework.render.AbstractProcessor.execute(AbstractProcessor.java:85)
org.alfresco.web.framework.render.RenderHelper.processRenderable(RenderHelper.java:284)
org.alfresco.web.framework.render.bean.ChromeRenderer.body(ChromeRenderer.java:60)
org.alfresco.web.framework.render.AbstractRenderer.render(AbstractRenderer.java:105)
org.alfresco.web.framework.render.bean.RegionRenderer.body(RegionRenderer.java:134)
org.alfresco.web.framework.render.AbstractRenderer.render(AbstractRenderer.java:105)
org.alfresco.web.framework.render.RenderUtil.startRegionRenderer(RenderUtil.java:273)
org.alfresco.web.framework.render.RenderUtil.renderRegion(RenderUtil.java:213)
org.alfresco.web.framework.render.PresentationUtil.renderRegion(PresentationUtil.java:125)
org.alfresco.web.site.taglib.RegionTag.doStartTag(RegionTag.java:109)
org.alfresco.tools.TagUtil.execute(TagUtil.java:147)
org.alfresco.tools.TagUtil.execute(TagUtil.java:81)
org.alfresco.web.scripts.FreemarkerTagSupportDirective.executeTag(FreemarkerTagSupportDirective.java:89)
org.alfresco.web.scripts.RegionFreemarkerTagDirective.execute(RegionFreemarkerTagDirective.java:128)
freemarker.core.Environment.visit(Environment.java:261)
freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
freemarker.core.Environment.visit(Environment.java:415)
freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
freemarker.core.Environment.visit(Environment.java:415)
freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Macro$Context.runMacro(Macro.java:164)
freemarker.core.Environment.visit(Environment.java:601)
freemarker.core.UnifiedCall.accept(UnifiedCall.java:106)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.IfBlock.accept(IfBlock.java:82)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Macro$Context.runMacro(Macro.java:164)
freemarker.core.Environment.visit(Environment.java:601)
freemarker.core.UnifiedCall.accept(UnifiedCall.java:106)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Environment.visit(Environment.java:393)
freemarker.core.BodyInstruction.accept(BodyInstruction.java:93)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Macro$Context.runMacro(Macro.java:164)
freemarker.core.Environment.visit(Environment.java:601)
freemarker.core.UnifiedCall.accept(UnifiedCall.java:106)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:208)
freemarker.core.Environment.process(Environment.java:188)
freemarker.template.Template.process(Template.java:237)
org.alfresco.web.scripts.PresentationTemplateProcessor.process(PresentationTemplateProcessor.java:185)
org.alfresco.web.scripts.FreemarkerProcessor.executeBody(FreemarkerProcessor.java:266)
org.alfresco.web.framework.render.AbstractProcessor.execute(AbstractProcessor.java:85)
org.alfresco.web.framework.render.RenderHelper.processTemplate(RenderHelper.java:423)
org.alfresco.web.framework.render.bean.TemplateInstanceRenderer.body(TemplateInstanceRenderer.java:140)
org.alfresco.web.framework.render.AbstractRenderer.render(AbstractRenderer.java:105)
org.alfresco.web.framework.render.bean.PageRenderer.body(PageRenderer.java:81)
org.alfresco.web.framework.render.AbstractRenderer.render(AbstractRenderer.java:105)
org.alfresco.web.framework.render.RenderUtil.startPageRenderer(RenderUtil.java:144)
org.alfresco.web.framework.render.RenderUtil.renderPage(RenderUtil.java:117)
org.alfresco.web.framework.render.PresentationUtil.renderPage(PresentationUtil.java:86)
org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:512)
org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:389)
org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:165)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:619)
Exception: org.alfresco.web.scripts.WebScriptException - 02260000 Cannot modify a property of a sealed object: unique. (file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js#14)
org.alfresco.web.scripts.PresentationScriptProcessor.executeScriptImpl(PresentationScriptProcessor.java:324)
Exception: org.alfresco.web.scripts.WebScriptException - 02260001 Failed to load script '/org/alfresco/components/dashlets/todo/todolist.get.js (in classpath store file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts)': 02260000 Cannot modify a property of a sealed object: unique. (file:C:/Programs/Alfresco/AlfrescoEE3.2r_test_todolist/tomcat/webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/todo/todolist.get.js#14)
org.alfresco.web.scripts.PresentationScriptProcessor.executeScript(PresentationScriptProcessor.java:193)

[snig]

Facing the same problem.
Any updates on this?

Thanks
Snig.

[targa2000]

I contacted ixxus but haven't heard back from them.

[oopepe]

Hello,

i had the same problem with the sealed scope and found this https://issues.alfresco.com/jira/browse/ETHREEOH-2760 .
They describe the cause and a solution for the problem there.

Regards,
oopepe

[daja77]

The problem is that todolist.get.js is trying to extend the Array class which is not allowed anymore in my recent Firefox. So I replaced todolist.get.js with the following code that does not extend the Array class.

   
// call over to Alfresco and fetch the todo list
var connector = remote.connect("alfresco");
var data = connector.get("/todo");

// create json object from data
var results = eval('(' + data + ')');

model.tasks = results["tasks"];

// do array unique thingy
var catArray = results["categories"];

function array_unique (categoryArray) {
   var r = new Array();
   o:for(var i = 0, n = categoryArray.length; i < n; i++)
   {
      for(var x = 0, y = r.length; x < y; x++)
      {
         if(r[x]==categoryArray[i].category)
         {
            continue o;
         }
      }
      r[r.length] = categoryArray[i].category;
   }
   return r;
}
if (catArray) {
    var unique = array_unique(catArray);
    model.cats = unique;
} else {
    model.cats = [];
}
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The dashlet loads then, but it produces similar errors when you try to add new todos. Unfortunatly that dashlet does not use the dl:todoList but its own types for implementation. Because of that I don't want to fix all the errors.

Good Luck

[mikeh]

Actually, todolist.get.js runs on the server, not the browser.

Thanks,
Mike

[daja77]

Yes, you are right of course, but still that javascript interpreter doesn't like that the Array class gets extended.

Cheers,

Daniel

[sebek]

I refreshed this topic - is somebody managed to repairing error which is described in 1st post?

[thewickedchild]

We ran into this same error while trying to stop an XML document from being formatted. We tried the solution in oopepe's link, but were unable to use the deepCopy that was created.

We eventually found a solution:

      var settings = XML.settings();
      settings.prettyPrinting = false;
      XML.setSettings(settings);‍‍‍

Using this method, you can modify the settings on the XML object.