Serializer.toXML() requires unnecessary parent element with specified QName
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Key: MUSE-215
URL: https://issues.apache.org/jira/browse/MUSE-215
Project: Muse
Issue Type: Bug
Environment: Muse 2.2.0, JDK 1.5.0
Reporter: Vinh Nguyen
Assigned To: Dan Jemiolo
The issue applies to all Muse releases so far.
I have this Get operation defined as:
<xs:element name="Get_queryName" type="xs:string"/>
<xs:element name="Get_arguments" type="tns:PropertyNameAndStringValueType"/>
<xs:element name="Get">
<xs:complexType>
<xs:sequence>
<xs:element ref="tns:Get_queryName" minOccurs="1"
maxOccurs="1"/>
<xs:element ref="tns:Get_arguments" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
The java method is:
public String get(String queryName, PropertyNameAndStringValueType[] queryArgs)
There is an issue with the Serializer.toXML(Object, QName) method. It requires
the Element returned to have the QName specified in the parameter. This forces
my code to create a parent element with that QName, and then set the real xml
element as the child. This causes an unnecessary xml layer on the data, which
the fromXML() method must strip away to get at the real data.
The effect is two problems:
1) When an array of PropertyNameAndStringValueType objects is sent, each object
is wrapped in a parent element with the QName passed into toXML() by Muse. The
result is no longer a list of PropertyNameAndStringValueType objects, but a
list of <Get_arguments> objects.
2) The dependency on toXML() to add an extra element wrapper and fromXML() to
strip the wrapper, requires all clients to use the custom serializers.
Otherwise, if a client sends a properly formatted xml request without the
unnecessary list wrappers, and the server calls fromXML() to strip expected
wrappers, data will be lost and errors will occur.
For example, I expected my client output to have one <Get_arguments> containing
a list of <PropertyNameAndStringValueType> elements like this:
<soap:Body>
<pfx1:Get xmlns:pfx1="http://schemas.cisco.com/Query";>
<pfx1:Get_queryName>TestQueryName</pfx1:Get_queryName>
<pfx1:Get_arguments>
<quer:PropertyNameAndStringValue
xmlns:quer="http://schemas.cisco.com/Query";>
<quer:propertyName>PropertyName 1</quer:propertyName>
<quer:stringValue>String value 1</quer:stringValue>
</quer:PropertyNameAndStringValue>
<quer:PropertyNameAndStringValue
xmlns:quer="http://schemas.cisco.com/Query";>
<quer:propertyName>PropertyName 2</quer:propertyName>
<quer:stringValue>String value 2</quer:stringValue>
</quer:PropertyNameAndStringValue>
</pfx1:Get_arguments>
</pfx1:Get>
</soap:Body>
But instead, I get one <Get_arguments> containing a list of other
<Get_arguments> elements:
<soap:Body>
<pfx1:Get xmlns:pfx1="http://schemas.cisco.com/Query";>
<pfx1:Get_queryName>TestQueryName</pfx1:Get_queryName>
<pfx1:Get_arguments>
<pfx1:Get_arguments>
<quer:PropertyNameAndStringValue
xmlns:quer="http://schemas.cisco.com/Query";>
<quer:propertyName>PropertyName 1</quer:propertyName>
<quer:stringValue>String value 1</quer:stringValue>
</quer:PropertyNameAndStringValue>
</pfx1:Get_arguments>
<pfx1:Get_arguments>
<quer:PropertyNameAndStringValue
xmlns:quer="http://schemas.cisco.com/Query";>
<quer:propertyName>PropertyName 2</quer:propertyName>
<quer:stringValue>String value 2</quer:stringValue>
</quer:PropertyNameAndStringValue>
</pfx1:Get_arguments>
</pfx1:Get_arguments>
</pfx1:Get>
</soap:Body>
Attached is my test program.
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