AEM asCS ACS-Commons javax.jcr.ValueFormatException: Can not assign a single value to multi-valued property: | Community
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neo-silicon
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March 26, 2024
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AEM asCS ACS-Commons javax.jcr.ValueFormatException: Can not assign a single value to multi-valued property:

  • March 26, 2024
  • 2 replies
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Hi ,

We are trying to import data from manage-controlled-processes.html getting below error

Caused by: javax.jcr.ValueFormatException: Can not assign a single value to multi-valued property:org.apache.jackrabbit.oak.jcr.delegate.NodeDelegate.setProperty(NodeDelegate.java:501) at org.apache.jackrabbit.oak.jcr.session.NodeImpl$38.perform(NodeImpl.java:1448) at org.apache.jackrabbit.oak.jcr.session.NodeImpl$38.perform(NodeImpl.java:1435) at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:229) at org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:113) at org.apache.jackrabbit.oak.jcr.session.NodeImpl.internalSetProperty(NodeImpl.java:1435) at org.apache.jackrabbit.oak.jcr.session.NodeImpl.setProperty(NodeImpl.java:377) at

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Best answer by abhishekanand_

Hi @neo-silicon 
If you’re dealing with a multi-valued property (e.g., a tag field), make sure you’re providing an array or list of values, not a single value. For example, if you’re setting tags, use an array of tag strings 

setProperty("tags", new String[]{"tag1", "tag2", "tag3"})


Check the specific line of code where the error occurs (e.g., NodeImpl.setProperty(NodeImpl.java:377)). Inspect the property name and value being set to identify any discrepancies.

2 replies

abhishekanand_
abhishekanand_Accepted solution
New Participant
March 27, 2024

Hi @neo-silicon 
If you’re dealing with a multi-valued property (e.g., a tag field), make sure you’re providing an array or list of values, not a single value. For example, if you’re setting tags, use an array of tag strings 

setProperty("tags", new String[]{"tag1", "tag2", "tag3"})


Check the specific line of code where the error occurs (e.g., NodeImpl.setProperty(NodeImpl.java:377)). Inspect the property name and value being set to identify any discrepancies.

Abhishek Anand
    sateaswa94
    sateaswa94
    New Participant
    March 27, 2024

    The root cause of the above exception is because you trying to set non array value to a multifield property. Initialise an array and add the required value to the array and set the array as the value of the property.

      sateaswa94
      sateaswa94
      New Participant
      March 27, 2024


      Use any one of the below condition before updating the property value

      Sling API String val = "test"; ModifiableValueMap properties = resource.adaptTo(ModifiableValueMap.class); if(modifiableValueMap.get("someproperty").getClass().isArray()) { modifiableValueMap.put("someproperty", new String[]{val}); } else { modifiableValueMap.put("someproperty", val); } JCR API Property property = node.getProperty("someproperty"); if(property.isMultiple()) { node.setProperty("someproperty", new String[]{val}); } else { node.setProperty("someproperty", val); }

       

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