AEM asCS ACS-Commons javax.jcr.ValueFormatException: Can not assign a single value to multi-valued property: | Community
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neo-silicon
Level 3
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
  • 915 views

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

sateaswa94
sateaswa94
Level 3
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
    Level 3
    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); }

     

      abhishekanand_
      Community Advisor
      abhishekanand_Community AdvisorAccepted solution
      Community Advisor
      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
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