Class LiteralFrame
java.lang.Object
|
+----Frame
|
+----LiteralFrame
- public class LiteralFrame
- extends Frame
The class `LiteralFrame', a subclass of Frame,
represents a frame internally as an exjava Literal object - such frames
should only be used to represent literals in EXPRESS models.
-
LiteralFrame(Literal)
- Constructs this frame by plugging in the given exjava Literal
object (it does so by copying the reference, which is maximally
efficient, but the client should not then alter the Literal
directly, as that would compromise the integrity of the frame).
-
LiteralFrame(Literal, Hashtable)
- Constructs this frame by plugging in the given exjava Literal
object (it does so by copying the reference, which is maximally
efficient, but the client should not then alter the Literal
directly, as that would compromise the integrity of the frame).
-
buildFrame()
- Fills in the slots for this frame from the underlying exjava
Literal object.
-
buildQueuedFrames()
- Builds any LiteralFrames that are queued to be built (those that
were constructed before the frame class was constructed).
-
getFrameClass()
- Returns the frame class of this frame.
-
initialise(Express)
- Initialises the LiteralFrame class by setting the class variable
_frameClass after looking up the `literal_expression' entity in the
given EXPRESS (meta)model.
-
readClass(ObjectInput)
- Deserialises the static data members (class variables) of
LiteralFrame.
-
writeClass(ObjectOutput)
- Serialises the static data members (class variables) of
LiteralFrame.
LiteralFrame
public LiteralFrame(Literal instanceData) throws FrameAlreadyExists
- Constructs this frame by plugging in the given exjava Literal
object (it does so by copying the reference, which is maximally
efficient, but the client should not then alter the Literal
directly, as that would compromise the integrity of the frame).
- Parameters:
- instanceData - An exjava Literal object to wrap in this
frame.
- Throws: FrameAlreadyExists
- If an LiteralFrame has already
been constructed for `instanceData'.
LiteralFrame
public LiteralFrame(Literal instanceData,
Hashtable moreInstanceData) throws FrameAlreadyExists
- Constructs this frame by plugging in the given exjava Literal
object (it does so by copying the reference, which is maximally
efficient, but the client should not then alter the Literal
directly, as that would compromise the integrity of the frame). This
constructor allows the literal frame to be tagged with extra slots,
given in a hash table.
- Parameters:
- instanceData - An exjava Literal object to wrap in this frame.
- moreInstanceData - Extra slots to tag this literal frame with.
- Throws: FrameAlreadyExists
- If an LiteralFrame has already
been constructed for `instanceData'.
initialise
public static void initialise(Express metamodel)
- Initialises the LiteralFrame class by setting the class variable
_frameClass after looking up the `literal_expression' entity in the
given EXPRESS (meta)model.
- Parameters:
- metamodel - An EXPRESS metamodel, which is expected to contain
the entity `literal_expression'.
buildQueuedFrames
public static void buildQueuedFrames()
- Builds any LiteralFrames that are queued to be built (those that
were constructed before the frame class was constructed). Their slots
are filled from the exjava objects with which they were constructed,
and they are then validated.
buildFrame
public void buildFrame()
- Fills in the slots for this frame from the underlying exjava
Literal object.
getFrameClass
public FrameClass getFrameClass()
- Returns the frame class of this frame.
- Returns:
- The frame class of this frame.
- Overrides:
- getFrameClass in class Frame
writeClass
public static void writeClass(ObjectOutput oo) throws IOException
- Serialises the static data members (class variables) of
LiteralFrame.
- Parameters:
- oo - An output object to save the class data to.
- Throws: IOException
- If an I/O exception occurs.
readClass
public static void readClass(ObjectInput oi) throws IOException
- Deserialises the static data members (class variables) of
LiteralFrame.
- Parameters:
- ois - An input object to save the class data to.
- Throws: IOException
- If an I/O exception occurs.