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gnu.java.beans.decoder
Class AbstractContext  

java.lang.Object
  gnu.java.beans.decoder.AbstractContext

All Implemented Interfaces:

Context

Direct Known Subclasses:

AbstractObjectContext, ArrayContext, DecoderContext, DummyContext, GrowableArrayContext, IndexContext

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abstract class AbstractContext

extends java.lang.Object

implements Context

AbstractContext implements some basic functionality of the Context interface and is therefore the base of all Context implementations.

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Field Summary
private  java.lang.String	id
private  boolean	isStatement

 

Constructor Summary
(package private)	AbstractContext()

 

Method Summary
void	addParameterObject(java.lang.Object o)           Adds a parameter object to the context.
java.lang.Object	endContext(Context outerContext)           Notifies that the context ends and the returns the appropriate result object.
java.lang.Object	get(int index)           Calls an appropriate indexed get method if it is available or throws an AssemblerException if that is not allowed on this Context.
java.lang.String	getId()           Returns this Context's unique id or null if does not have such an id.
java.lang.Object	getResult()           Returns the result which was calculated by calling endContext() or reportStatement().
boolean	isStatement()           Returns whether this Context is a statement (not returning result back to parent handler's Context) or not (= expression).
void	notifyStatement(Context outerContext)           Notifies that the next element is a statement.
void	set(int index, java.lang.Object o)           Calls an appropriate indexed set method if it is available or throws an AssemblerException if that is not allowed on this Context.
void	setId(java.lang.String newId)           Gives this Context a unique id.
void	setStatement(boolean b)           Sets whether this Context is a statement or not.
boolean	subContextFailed()           Notifies that the assembly of a subcontext failed and returns whether this Context is affected in a way that it fails too.

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

isStatement

private boolean isStatement

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id

private java.lang.String id

Constructor Detail

AbstractContext

AbstractContext()

Method Detail

getId

public java.lang.String getId()

Description copied from interface: Context

Returns this Context's unique id or null if does not have such an id.

Specified by:

getId in interface Context

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setId

public void setId(java.lang.String newId)

Description copied from interface: Context

Gives this Context a unique id. For convenience the id may be null which means that no id exists at all.

Specified by:

setId in interface Context

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isStatement

public boolean isStatement()

Description copied from interface: Context

Returns whether this Context is a statement (not returning result back to parent handler's Context) or not (= expression).

Specified by:

isStatement in interface Context

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setStatement

public void setStatement(boolean b)

Description copied from interface: Context

Sets whether this Context is a statement or not.

Specified by:

setStatement in interface Context

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addParameterObject

public void addParameterObject(java.lang.Object o)
                        throws AssemblyException

Adds a parameter object to the context. This method is used when sub-Contexts return their result. Some Contexts do not accept more than a certain amount of objects and throw an AssemblerException if the amount is exceeded.

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notifyStatement

public void notifyStatement(Context outerContext)
                     throws AssemblyException

Notifies that the next element is a statement. This can mean that an argument list is complete to be called.

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endContext

public java.lang.Object endContext(Context outerContext)
                            throws AssemblyException

Notifies that the context ends and the returns the appropriate result object.

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subContextFailed

public boolean subContextFailed()

Notifies that the assembly of a subcontext failed and returns whether this Context is affected in a way that it fails too.

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set

public void set(int index,
                java.lang.Object o)
         throws AssemblyException

Calls an appropriate indexed set method if it is available or throws an AssemblerException if that is not allowed on this Context. The behaviour of this method is equal to List.set(int, Object).

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get

public java.lang.Object get(int index)
                     throws AssemblyException

Calls an appropriate indexed get method if it is available or throws an AssemblerException if that is not allowed on this Context. The behaviour of this method is equal to List.get(int).

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getResult

public java.lang.Object getResult()

Returns the result which was calculated by calling endContext() or reportStatement(). Its the handler's responsibility to care that any of these two methods was called. This is used by sub-Contexts to access this Context's result.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> gnu >> java >> beans >> [ decoder overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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