topic Problem reducing a property from &lt;multiple&gt; to single in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266123#M219253 <HTML><HEAD></HEAD><BODY><SPAN>We have crated a custom property of type d:text, originally defined als &lt;multiple&gt;true&lt;/multiple&gt;.</SPAN><BR /><BR /><SPAN>Trying to change it to only allow single values causes a problem when trying to delete old nodes that were created under the original model.</SPAN><BR /><SPAN>Exception:</SPAN><BR /><BR /><SPAN>Unable to delete Space due to system error: Failed to execute transaction-level behaviour public abstract void org.alfresco.repo.node.NodeServicePolicies$OnUpdateNodePolicy.onUpdateNode(org.alfresco.service.cmr.repository.NodeRef) in transaction 25c1866e-1b32-11e1-a8f2-b7e9e5abd43b</SPAN><BR /><BR /><SPAN>Caused by: org.alfresco.service.cmr.dictionary.DictionaryException: A single-valued property of this type may not be a collection</SPAN><BR /><BR /><BR /><SPAN>This makes sense to me as the old properties were obviously stored as collections, and now the new model is saying they should be Strings</SPAN><BR /><SPAN>BUt it raises the question: how to deal with an change of model of this nature? Is there a procedure to "update" old nodes to the new model? It would be OK in this case to simply preserve the first value in the collection and forget about the rest.</SPAN></BODY></HTML> Thu, 01 Dec 2011 09:40:48 GMT frank_d 2011-12-01T09:40:48Z Problem reducing a property from <multiple> to single https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266123#M219253 We have crated a custom property of type d:text, originally defined als &lt;multiple&gt;true&lt;/multiple&gt;.Trying to change it to only allow single values causes a problem when trying to delete old nodes that were created under the original model.Exception:Unable to delete Space due to system err Thu, 01 Dec 2011 09:40:48 GMT https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266123#M219253 frank_d 2011-12-01T09:40:48Z Re: Problem reducing a property from <multiple> to single https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266124#M219254 <HTML><HEAD></HEAD><BODY><SPAN>Before deploying the new content model you should remove or update all the old nodes created with the old content model.</SPAN><BR /><SPAN>Once you have updated the old nodes, then you can disable the involved model, and then update it with a new version and then you can enable it again.</SPAN><BR /><SPAN>To disable and enable a content model, you have to manage the Model Active property available for each model deployed as a content in the repo.</SPAN><BR /><BR /><SPAN>Hope this helps.</SPAN></BODY></HTML> Fri, 02 Dec 2011 15:38:20 GMT https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266124#M219254 openpj 2011-12-02T15:38:20Z Re: Problem reducing a property from <multiple> to single https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266125#M219255 <HTML><HEAD></HEAD><BODY><SPAN>Worth a try. Thank you.</SPAN></BODY></HTML> Mon, 05 Dec 2011 17:05:28 GMT https://connect.hyland.com/t5/alfresco-archive/problem-reducing-a-property-from-lt-multiple-gt-to-single/m-p/266125#M219255 frank_d 2011-12-05T17:05:28Z