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gnu.java.beans.decoder
Class ConstructorContext  

java.lang.Object
  gnu.java.beans.decoder.AbstractContext
      gnu.java.beans.decoder.AbstractObjectContext
          gnu.java.beans.decoder.AbstractCreatableObjectContext
              gnu.java.beans.decoder.ConstructorContext

All Implemented Interfaces:

Context

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class ConstructorContext

extends AbstractCreatableObjectContext

A ConstructorContext is a Context implementation which collects the parameters for a constructor call and instantiates the result object using that constructor. After that sub-contexts can invoke methods on the result object.

The constructor is invoked when a sub-context is a statement or the Context ends.

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Field Summary
private  java.util.ArrayList	arguments
private  java.lang.Class	klass
protected  java.lang.Object	object

 

Constructor Summary
(package private)	ConstructorContext(java.lang.String id, java.lang.Class newClass)

 

Method Summary
void	addParameterObject(java.lang.Object o)           Adds a parameter object to this Context if the result object has not been created yet.
protected  void	addParameterObjectImpl(java.lang.Object o)           Adds a parameter object to this Context.
protected  java.lang.Object	createObject(Context outerContext)           Creates the result object.
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)           Creates the result object if it does not exist already.
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.
protected  void	setObject(java.lang.Object obj)           Sets the result object of the Context.
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

arguments

private java.util.ArrayList arguments

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klass

private java.lang.Class klass

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object

protected java.lang.Object object

Constructor Detail

ConstructorContext

ConstructorContext(java.lang.String id,
                   java.lang.Class newClass)

Method Detail

addParameterObjectImpl

protected void addParameterObjectImpl(java.lang.Object o)

Description copied from class: AbstractCreatableObjectContext

Adds a parameter object to this Context. Implement this without caring for illegal states because this has been done already.

Specified by:

addParameterObjectImpl in class AbstractCreatableObjectContext

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createObject

protected java.lang.Object createObject(Context outerContext)
                                 throws AssemblyException

Description copied from class: AbstractCreatableObjectContext

Creates the result object. This method is called only once. Implement this without checking for double invocations as this is already being prevented.

Specified by:

createObject in class AbstractCreatableObjectContext

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addParameterObject

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

Adds a parameter object to this Context if the result object has not been created yet. Otherwise an AssemblyException is thrown that indicates a wrong behavior of the decoder.

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notifyStatement

public final void notifyStatement(Context outerContext)
                           throws AssemblyException

Creates the result object if it does not exist already.

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endContext

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

Description copied from interface: Context

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

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subContextFailed

public boolean subContextFailed()

Description copied from interface: Context

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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setObject

protected final void setObject(java.lang.Object obj)

Sets the result object of the Context.

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set

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

Description copied from interface: Context

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

Description copied from interface: Context

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 final java.lang.Object getResult()

Description copied from interface: Context

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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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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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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