simple.http.serve
Class FormatFactory
java.lang.Object
simple.http.serve.FormatFactory
public final class FormatFactory
- extends java.lang.Object
The FormatFactory
retrives the Format
implementation for the system. Because an implementor of a web
server using the FileEngine
may not implement a
Format
object a default system wide implementation
is needed to keep the instances consistant. This object will
produce implementations that are consistant within the system.
In order to define a system wide implementation a property is
needed to define the object. This uses the System
properties to define the class name for the default instance.
The property is the simple.http.serve.format
property that can be set using an argument to the VM.
java -Dsimple.http.serve.format=demo.example.ExampleFormat
This will set the System
property to the class
name demo.example.ExampleFormat
. When the factory
method getInstance
is invoked it will return an
implementation of this object or if the implementation cannot
be loaded by this classes class loader a default implementation
DefaultFormat
is returned instead.
- Author:
- Niall Gallagher
Method Summary |
static Format |
getInstance()
This is used to produce the system wide Format
implementation so that the FileEngine objects
can remain consistant. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
FormatFactory
public FormatFactory()
getInstance
public static Format getInstance()
- This is used to produce the system wide
Format
implementation so that the FileEngine
objects
can remain consistant. This will use a system property
simple.http.serve.format
to define the
class name of the implementation that will be used for the
system wide Format
. The property should contain
the fully qualified class name of the object and should be
loadable by this classes class loader. If the specified class
cannot be loaded the DefaultFormat
is used.
- Returns:
- an implementation of the
Format
interface