Re: [xfire-user] Setting Array-typed properties from incoming SOAP messages

Wed, 19 Apr 2006 23:24:46 -0700 

Oh, it does.
Defining a namespace alias in SOAP-ENV and using the alias in colon notation is equal to having a xmlns with the namespace in a tag (from a formal xml perspective). I know that this confuses not only human reader, but some tools as well. But it is not xfire that takes this decision, it's the stax implementation below. One reason I can think of for that behaviour is, that stax is stream based, so that it doesn't know all namespaces at the start of the xml creation. 

M.


Mark Slater schrieb:

So I found the answer to my question. When sending the data to XFire, 
the namespaces must be set on the fields of the complex data type, as 
below:



<SOAP-ENV:Envelope  
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";

xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:ns4="http://rpc.whisper.ucsc.edu";
xmlns:ns5="http://core.whisper.ucsc.edu";
>
...
<ns4:addItemToLibrary>
<in0>
    <ns5:authors>
        <AuthorData>
            <ns5:person>false</ns5:person>
            <ns5:organizationName>test org</ns5:organizationName>
        </AuthorData>
    </ns5:authors>
    <ns5:dateCreated></ns5:dateCreated>
    <ns5:primaryKeyword>test2</ns5:primaryKeyword>
    <ns5:title>test</ns5:title>
</in0>

Note the ns5: on the person and organizationName fields.


The only part that I'm left confused about though is why XFire doesn't 
put (or maybe doesn't need to put) the namespaces on outgoing 
messages, as below:


<getAllItemsInfoResponse xmlns="http://rpc.whisper.ucsc.edu";>
    <out xmlns="http://rpc.whisper.ucsc.edu";>

        <ns1:LibraryItemInfoData 
xmlns:ns1="http://core.whisper.ucsc.edu";>
            <UUID 
xmlns="http://core.whisper.ucsc.edu";>9c2fa34d-4d2d-4907-9736-38f72d3c705d</UUID> 


            <authors xmlns="http://core.whisper.ucsc.edu";>
                <AuthorData>
                    <familyName xsi:nil="true" />
                    <firstName xsi:nil="true" />
                    <fullName>Cuba</fullName>
                    <organizationName>Cuba</organizationName>
                    <otherNames xsi:nil="true" />
                    <person>false</person>
                    <username xsi:nil="true" />
                </AuthorData>
            </authors>

            <dateCreated 
xmlns="http://core.whisper.ucsc.edu";>1978-05-09T00:00:00-07:00</dateCreated> 

            <dateEntered 
xmlns="http://core.whisper.ucsc.edu";>2006-04-19T16:31:51.725-07:00</dateEntered> 

            <encoding xmlns="http://core.whisper.ucsc.edu"; 
xsi:nil="true" />

            <keywords xmlns="http://core.whisper.ucsc.edu";>

                <ns2:string 
xmlns:ns2="http://rpc.whisper.ucsc.edu";>cuban</ns2:string>
                <ns2:string 
xmlns:ns2="http://rpc.whisper.ucsc.edu";>raisens</ns2:string>
                <ns2:string 
xmlns:ns2="http://rpc.whisper.ucsc.edu";>recipe</ns2:string>
                <ns2:string 
xmlns:ns2="http://rpc.whisper.ucsc.edu";>rice</ns2:string>

            </keywords>

            <lastModified 
xmlns="http://core.whisper.ucsc.edu";>2006-04-19T16:31:51.725-07:00</lastModified> 

            <mimeType 
xmlns="http://core.whisper.ucsc.edu";>text/rtf</mimeType>
            <primaryKeyword 
xmlns="http://core.whisper.ucsc.edu";>recipe</primaryKeyword>

            <size xmlns="http://core.whisper.ucsc.edu";>1128</size>

            <title xmlns="http://core.whisper.ucsc.edu";>cuban 
rice</title>
            <typeExtension 
xmlns="http://core.whisper.ucsc.edu";>.rtf</typeExtension>
            <username 
xmlns="http://core.whisper.ucsc.edu";>mark</username>
            <whisperId 
xmlns="http://core.whisper.ucsc.edu";>631edcaf69edfd75f5816706b89016356ba28c6a</whisperId> 


        </ns1:LibraryItemInfoData>
    </out>
</getAllItemsInfoResponse>

Mark

On Apr 19, 2006, at 3:34 PM, Mark Slater wrote:


On Apr 19, 2006, at 2:07 PM, Mika Göckel wrote:

I'm a little bit confused, because you mixed System.out and log.

Could it be that the first element of the List returns null, it 
fails with a NPE in author.isPerson() and we don't see the 
System.out logs?


M.




Bloody hell. Thanks for catching that. I'm teaching a beginning 
programming course this quarter (in Java), and spent all afternoon 
yesterday telling students how to use System.out.println().



After fixing the logging statements, I'm finally able to see the 
exception that's getting thrown. Its a NullPointerException within 
the proxy for my Author object.



2006-04-19 15:11:26,734 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Setting authors to: 
[EMAIL PROTECTED]>
2006-04-19 15:11:26,734 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <author = 
[EMAIL PROTECTED]>
2006-04-19 15:11:26,738 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Exception while 
extracting authors>

java.lang.NullPointerException
        at $Proxy13.isPerson(Unknown Source)
        at edu.ucsc.whisper.core.AuthorData.<init>(AuthorData.java:34)

        at 
edu.ucsc.whisper.core.LibraryItemInfoData.setAuthors(LibraryItemInfoData.java:273) 


        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 

        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 


        at java.lang.reflect.Method.invoke(Method.java:585)

        at 
org.codehaus.xfire.aegis.type.basic.BeanType.writeProperty(BeanType.java:223) 



The method signature for isPerson() is:

    public final boolean isPerson()


So that made me think that perhaps a value wasn't sent for that 
field, but the SOAP message did send one (I've formatted this to make 
it more readable):



<SOAP-ENV:Envelope  
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";

     xmlns:xsd="http://www.w3.org/2001/XMLSchema";
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
     xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
     xmlns:ns4="http://rpc.whisper.ucsc.edu";
     xmlns:ns5="http://core.whisper.ucsc.edu";
>
...
<in0>
    <ns5:authors>
        <AuthorData>
            <person>true</person>
            <familyName>Slater</familyName>
            <firstName>Mark</firstName>
            <otherNames>David</otherNames>
            <username>mark</username>
        </AuthorData>
    </ns5:authors>

    <ns5:dateCreated>2006-02-23T00:00:00-08:00</ns5:dateCreated>
    <ns5:primaryKeyword>Directions</ns5:primaryKeyword>
    <ns5:title>Directions</ns5:title>

    <ns5:keywords>
      <ns4:string>stephen</ns4:string>
      <ns4:string>alameda</ns4:string>
    </ns5:keywords>
</in0>

The WSDL for the service is below.


So I tried changing the type from the Author interface to the 
AuthorData implementation class, and added logging statements to the 
constructors and property setters. With those changes, the output I 
get is:



2006-04-19 15:23:40,710 DEBUG 
[org.springframework.web.servlet.handler.SimpleUrlHandlerMapping] - 
<Looking up handler for [/LibraryService]>
2006-04-19 15:23:40,710 DEBUG 
[org.springframework.web.servlet.DispatcherServlet] - <Testing 
handler adapter 
[EMAIL PROTECTED]> 

2006-04-19 15:23:40,827 INFO [edu.ucsc.whisper.core.AuthorData] - 
<Making new AuthorData with default Constructor>
2006-04-19 15:23:40,828 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <Setting authors to: 
[{AuthorData: authorType=person; fullName=}]>
2006-04-19 15:23:40,828 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <author = {AuthorData: 
authorType=person; fullName=}>
2006-04-19 15:23:40,829 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authorClass = class 
edu.ucsc.whisper.core.AuthorData>
2006-04-19 15:23:40,829 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authorClass interfaces 
= [Ljava.lang.Class;@33f21d>
2006-04-19 15:23:40,829 INFO [edu.ucsc.whisper.core.AuthorData] - 
<Making new AuthorData with existing Author>
2006-04-19 15:23:40,829 INFO 
[edu.ucsc.whisper.core.LibraryItemInfoData] - <authors list is now: 
[{AuthorData: authorType=person; fullName=}]>



So you can see that the class is begin created, but the properties 
aren't being set. I'd be willing to bet that this is the cause of the 
NullPointerException when the dynamic proxy for the Author interface 
is used instead of the concrete class. And it brings me back to my 
question from last night: Is the AuthorData part of my message 
formatted/layed out correctly, and if not, what should it look like?


Thanks,

Mark

WSDL for the types involved.

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
      xmlns:ns1="http://core.whisper.ucsc.edu";
      xmlns:soap11="http://schemas.xmlsoap.org/soap/envelope/";
      xmlns:soap12="http://www.w3.org/2003/05/soap-envelope";
      xmlns:soapenc11="http://schemas.xmlsoap.org/soap/encoding/";
      xmlns:soapenc12="http://www.w3.org/2003/05/soap-encoding";
      xmlns:tns="http://rpc.whisper.ucsc.edu";
      xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/";
      xmlns:xsd="http://www.w3.org/2001/XMLSchema";
      targetNamespace="http://rpc.whisper.ucsc.edu";>

  <wsdl:types>

    <xsd:schema targetNamespace="http://core.whisper.ucsc.edu"; 
elementFormDefault="qualified" attributeFormDefault="qualified">

      <xsd:complexType name="LibraryItemInfoData">
        <xsd:sequence>

          <xsd:element name="UUID" type="xsd:string" minOccurs="0" 
nillable="true" />
          <xsd:element name="authors" type="ns1:ArrayOfAuthorData" 
minOccurs="0" nillable="true" />
          <xsd:element name="dateCreated" type="xsd:dateTime" 
minOccurs="0" nillable="true" />
          <xsd:element name="dateEntered" type="xsd:dateTime" 
minOccurs="0" nillable="true" />
          <xsd:element name="encoding" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="keywords" type="tns:ArrayOfString" 
minOccurs="0" nillable="true" />
          <xsd:element name="lastModified" type="xsd:dateTime" 
minOccurs="0" nillable="true" />
          <xsd:element name="mimeType" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="primaryKeyword" type="xsd:string" 
minOccurs="0" nillable="true" />

          <xsd:element name="size" type="xsd:long" minOccurs="0" />

          <xsd:element name="title" type="xsd:string" minOccurs="0" 
nillable="true" />
          <xsd:element name="typeExtension" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="username" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="whisperId" type="xsd:string" 
minOccurs="0" nillable="true" />

          <xsd:any minOccurs="0" maxOccurs="unbounded" />
        </xsd:sequence>
        <xsd:anyAttribute />
      </xsd:complexType>
      <xsd:complexType name="ArrayOfAuthorData">
        <xsd:sequence>

          <xsd:element name="AuthorData" type="ns1:AuthorData" 
nillable="true" minOccurs="0" maxOccurs="unbounded" />

        </xsd:sequence>
      </xsd:complexType>
      <xsd:complexType name="AuthorData">
        <xsd:sequence>

          <xsd:element name="familyName" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="firstName" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="fullName" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="organizationName" type="xsd:string" 
minOccurs="0" nillable="true" />
          <xsd:element name="otherNames" type="xsd:string" 
minOccurs="0" nillable="true" />

          <xsd:element name="person" type="xsd:boolean" minOccurs="0" />

          <xsd:element name="username" type="xsd:string" 
minOccurs="0" nillable="true" />

          <xsd:any minOccurs="0" maxOccurs="unbounded" />
        </xsd:sequence>
        <xsd:anyAttribute />
      </xsd:complexType>
      <xsd:complexType name="ArrayOfString">
        <xsd:sequence>

          <xsd:element name="string" type="xsd:string" 
nillable="true" minOccurs="0" maxOccurs="unbounded" />

        </xsd:sequence>
      </xsd:complexType>








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Mika Göckel

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