topic Re: An operation AddEntryToMultivaluedProperty generates an error in Nuxeo Forum

An operation AddEntryToMultivaluedProperty generates an error

adam_bo_ — Wed, 04 Oct 2017 12:24:01 GMT

The operation AddEntryToMultivaluedProperty generates the error in the method "run". There is a problem in the line:

List<Serializable> array = p.getValue() != null ? Arrays.asList((Serializable[]) p.getValue()) : null;

It returns an exception:

Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to [Ljava.io.Serializable;

In general, the problem is casting ArrayList returned by p.getValue() to Serializable[].

Schema:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.nuxeo.org/ecm/schemas/mytest"
xmlns:nxs="http://www.nuxeo.org/ecm/schemas/mytest">
<xs:include schemaLocation="base.xsd" />
<xs:element name="industries" type="nxs:stringList"/>
</xs:schema>

Document definition:

<?xml version="1.0" encoding="UTF-8"?>
<component name="org.nuxeo.mytest.default.types">
<require>org.nuxeo.ecm.core.schema.TypeService</require>
<require>org.nuxeo.ecm.core.CoreExtensions</require>
<require>org.nuxeo.ecm.platform.search.CoreExtensions</require>
<require>org.nuxeo.ecm.platform.search.default.types</require>
<require>org.nuxeo.ecm.platform.types.TypeService</require>
<extension target="org.nuxeo.ecm.core.schema.TypeService" point="schema">
<schema name="myschema" prefix="myschema" src="schemas/myschema.xsd" />
</extension>
<extension target="org.nuxeo.ecm.core.schema.TypeService" point="doctype">
<doctype name="MyDocument" extends="Document">
<schema name="common" />
<schema name="dublincore"/>
<schema name="uid"/>
<schema name="myschema" />
</doctype>
</extension>
<extension target="org.nuxeo.ecm.core.lifecycle.LifeCycleService" point="types">
<types>
<type name="MyDocument">default</type>
</types>
</extension>
<extension target="org.nuxeo.ecm.platform.types.TypeService" point="types">
<type id="MyDocument">
<label>MyDocument</label>
<icon>/icons/file.gif</icon>
<bigIcon>/icons/file_100.png</bigIcon>
<category>SimpleDocument</category>
<default-view>view_documents</default-view>
<layouts mode="any">
<layout>heading</layout>
</layouts>
<layouts mode="edit">
<layout>heading</layout>
</layouts>
<layouts mode="view">
<layout>heading</layout>
</layouts>
</type>
<type id="Folder">
<subtypes>
<type>MyDocument</type>
</subtypes>
</type>
</extension>
</component>

PHP code:

$doc["industries"] = "electrical";
$result = $session->newRequest("AddEntryToMultivaluedProperty")
->set('input', 'doc:'.$mydoc->getPath())
->set('params', 'xpath', 'myschema:industries')
->set('params', 'value', $doc["industries"])
->sendRequest();

Re: An operation AddEntryToMultivaluedProperty generates an error

Florent_Guillau — Wed, 04 Oct 2017 12:38:38 GMT

p.getValue() should always return an array when p is a multi-value property. What is your property exactly?

Re: An operation AddEntryToMultivaluedProperty generates an error

adam_bo_ — Thu, 05 Oct 2017 06:58:14 GMT

It is nxs

Re: An operation AddEntryToMultivaluedProperty generates an error

Florent_Guillau — Thu, 05 Oct 2017 09:06:59 GMT

It works in my tests. Nuxeo normalizes simples lists to arrays very early. The following test, modified from TestSQLRepositoryProperties, succeeds:

@Test
public void testStringArray() throws Exception {
    String[] values = { "foo", "bar" };
    doc.setPropertyValue("tp:stringArray", values);
    // doc.setPropertyValue("tp:stringArray", (Serializable) Arrays.asList(values)); // works too
    assertTrue(Arrays.equals(values, (Object[]) doc.getPropertyValue("tp:stringArray")));
    doc = session.saveDocument(doc);
    assertTrue(Arrays.equals(values, (Object[]) doc.getPropertyValue("tp:stringArray")));
}

Where tp:stringArray is defined as:

<xs:element name="stringArray" type="nxs:stringArrayType" />
<xs:simpleType name="stringArrayType">
  <xs:list itemType="xs:string" />
</xs:simpleType>

Re: An operation AddEntryToMultivaluedProperty generates an error

adam_bo_ — Thu, 05 Oct 2017 13:44:52 GMT

Yes, it works, but it is not the same case. Could you try call the operation ? You can also try execute the equivalent code

Re: An operation AddEntryToMultivaluedProperty generates an error

Florent_Guillau — Thu, 05 Oct 2017 13:49:30 GMT

I understand that you're saying that p.getValue() returns an ArrayList but what I'm saying is that should not be the case and it does not happen in unit tests. Please provide a reproduction case so that we can understand what is happening.

Re: An operation AddEntryToMultivaluedProperty generates an error

adam_bo_ — Thu, 05 Oct 2017 14:14:30 GMT

I checked it in debugger that it crashes in the line i wroted. The same means the error description, but as you wish I provide the code.