OpenSAML user discussion

[Subash Devkota <>]

Thank You Chad for your detail reply.

I created the AttributeValue Object but could not find the way for setting values in it.
I am sorry for bothering you again. But, I am new to openSAML and could not find any good document for the help. Could you please refer if any.

I created the AttribueValue using the code:
         XSStringBuilder xsStringBuilder= new XSStringBuilder();//) builderFactory.getBuilder(AttributeValue.DEFAULT_ELEMENT_NAME);
           XMLObject attributeValue=xsStringBuilder.buildObject(AttributeValue.DEFAULT_ELEMENT_NAME, XSString.TYPE_NAME);

It created the xml:

        <saml:AttributeValue xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string"/>

Then this attributeValue object does not have any method to set its value. It has only to set methods: setDOM() and setParent().

I don't think setting DOM is the good solution. Is there any way of adding the value to AttributeValue?

Thank You
Subash

           

Chad La Joie wrote:

No, you don't have to use the default provider (and probably shouldn't) in order to create attribute values.  Instead you'd get the builder for whatever you want to use as an attribute value and build it using the element name AttributeValue.  So, for example, lets say you wanted to have a value that is a string.  Get the builder for the XSString object (our XMLObject that models the XML schema string type).  Then, instead of using the normal buildObject method use one of the ones that takes both the element name AND the schema type, for example buildObject(QName, QName), passing in the AttributeValue qname for the first argument and the XSString type for the second.

This way, when the object is marshalled you end up with something like

<saml2:AttributeValue xsi:type="xs:string">
   Some attribute value
</saml2:AttributeValue/>

Note that the proxy element only gets used if the library is unable to determine what the element actually contains.  By specifying the schema type (string) the library would appropriately unmarshall the above snippet into an XSString XMLObject.  If the type wasn't there it would have no way of knowing the type of the element and would fall back to the proxy.

Subash Devkota wrote:

Hi all,

I am using the latest java-saml2 codes from svn.

I want  to build AttributeValue object and append it to Attribute. There is no AttributeValueBuilder.

https://spaces.internet2.edu/display/SHIB/OSTwoUsrManJavaLibIntro  page under *Default Object Provider* section states that:

In most cases developer's wont encounter this XMLObject. However, it's common that this object will be used as the container for AttributeValue elements.


Scott and Chad,
Does it mean, we need to use this default object provider for creating AttributeValue object?
I tried it in the following manner.
In common-config.xml file, I found the entry
   <BuilderClass className="org.opensaml.xml.ElementProxyBuilder" />
and tried to create the object using the code:

         org.opensaml.xml.ElementProxyBuilder proxyBuilder= new org.opensaml.xml.ElementProxyBuilder();
           AttributeValue attributeValue= (AttributeValue) proxyBuilder.buildObject(SAMLConstants.SAML20_NS, AttributeValue.DEFAULT_ELEMENT_LOCAL_NAME, SAMLConstants.SAML20_PREFIX);
          But, I encounter the ClassCastException in second line.

How can I create AttributeValue object?

Thanks in advance
Subash

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