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JAXB Exam
At 11:56 AM on Jan 30, 2008, benediktSattler wrote:
Fresh Jobs for Developers Post a job opportunity
Today I looked at the XML exam section and wondered that there is no exam which covers JAXB. I think this would be a quite useful exam.
What are you thinking?
best regards
Benedikt Sattler
4 replies so far (
Post your own)
Re: JAXB Exam
Yes Benedikt.Are you starting the preparation of wiki page of objectives? Once there is a wiki page, I may try to help you out.
thanks,
Amzad Basha.
Re: JAXB Exam
Okay I will define the objectives.I will do this in the next days, because I have many work.
best regards
Re: JAXB Exam
Here is the first draft for the JAXB Exam.JAXB 2.0 (25)
-----------
This exam is focused on the version 2.0 of the JAXB API.
This exam assumes that the exam taker has a good knowledge of
XML-Schemas and the XML- Technology. Most of the questions uses
Schemas, but there are not questions which covers schema details.
This is addressed in another exam.
Note that there are no questions about specific implementations.
Note that minimal XPath knowledge is required to define extern bindingdeclarations, but there should be no XPath specific questions on the exam.
There are only questions about features which are describes in the specifitcation
produced by:
General (1)
-----------
Describe the Schema-Compiler
Describe the Schema-Generator
Identify the two ways of unmarshalling: Structural and Flexible
Describe what a Binder Component can do.
Design (2)
----------
Describe the three ways of mapping schemas to the data model of an application.
out to in, meet in the middle, in to out
Identify the disadvantages and advantages of each of these ways.
Identify the advantages and disadvantages of flexible mapping of a xml document.
Identify the advantages and disadvantages of separating the xml processing layer from the business layer.
JAXB API Contents
-----------
Describe the responsibilites of the JAXBContext
Write code that instantiates and uses a JAXBContext correctly.
Identify the fact that a JAXBContext is very expensive to create and therefore threadsafe.
JAXBIntrospector (1)
Use the methods of the class to introspect JAXBObjects and be aware of
the impact of using a JAXBElement.
ObjectFactory (1)
Use the class ObjectFactory to create objects which currently resides in the table of the JAXBContext.
Identify the fact that the class ObjectFactory is created by the Schemacompiler.
Marshaller (2)
Write code that sets properties on the Marshaller
Obtain a Marshaller Component.
Write code that marshalls POJOS to XML files.
Write code that marshalls POJOS to other XML API's
Use the class JAXBElement to marshal objects which are not toplevel objects in the JAXBContext.
Unmarshaller (2)
Obtain a Unmarshaller Component programatically.
Write code to read POJOS from a XML file.
Write code to read POJOS from other XML API's
Write code to read POJOS from an URL object.
Use the JAXBElement to unmarshall objects from an XML file that uses type substituation.
Unmarshall POJOs that are not XMLRootElements
Unmarshall only parts of a xml document to POJOS.
Identify the behaviour of the Unmarshaller if it uses flexible marshalling.
Validation (2)
--------------
Use a Schema on both the Marshaller and the Unmarshaller component.
Write code that uses the class ValidationEvent to detect errors and failures.
Write code that defines own ValidationEventHandler components.
Identify the fact that a FATAL_ERROR should always lead to the cancelation of the processing process.
Write code that uses the Class ValidationEventCollector to collect events.
Callbacks (1)
-------------
Write code that inherits from the classes Unmarshaller.Listener and Marshaller.Listener
Write code that defines Listeners in the POJO classes that should be represented as XML.
Binder (1)
--------
Identify the abilities of the Binder Component.
Write code that uses the Binder Component to
* updateXML and updateJAXB
* marshall and unmarshalls both XMLRootElements and other Elements.
* uses the method getXMLNode and getJAXBNode
JAXBElement (1)
Use the methods
*isNil
*isGlobalScope
*isTypeSubstituated
*getName
*getScope
*getDeclaredType
to examine XML content representation at runtime.
XML-Scheme to Java (6)
----------------------------
Identify the two types of scheme bindingconfigurations :
* inline
* extern
and their advantages and disadvantages#
Identify the four scopes: global, scheme, element, component,
Identify which bindingdeclaration takes precedence if there are defined more than one on different scopes.
Write code that uses the methods of the class javax.xml.bind.DataTypeConverter
for converting types with the javaType bindingdeclaration.
Write code that defines own methods for the attributes parse/print of the javaType bindingdeclaration
use the bindingdeclarations:
jaxb:collectionType
jaxb:package
jaxb:class
jaxb:property
jaxb:javadoc
fixedAttributeAsConstantProperty
choiceContentProperty
typeSafeEnumBase
typeSafeEnumMemberName
enableJavaNamingConventions
generateElementClass
generateValueClass
localScoping
factoryMethod
elementName
generateElementProperty
baseType
javaType
typeSafeEnumClass
typeName
Java to Scheme (5)
------------------------
Use the following annotations to define mapping to a scheme from a JavaType.
XmlElement
XmlAttribute
XmlValue
XmlTransient
XmlAccessorOrder
XmlAccessorType
XmlElementRef
XmlRootElement
XmlType
XmlEnum
XmlEnumValue
XmlAnyAttribute
XmlAnyElement
XmlID
XmlIDREF
Re: JAXB Exam
Sounds very good to me Benedikt.Good Job !