Package org.apache.tapestry5.internal.services

Class EnvironmentImpl

java.lang.Object

org.apache.tapestry5.internal.services.EnvironmentImpl

All Implemented Interfaces:

Environment

public class EnvironmentImpl
extends Object
implements Environment

A non-threadsafe implementation (expects to use the "perthread" service lifecyle).

Constructor Summary

Constructors

Constructor	Description
EnvironmentImpl()

Method Summary

Modifier and Type	Method	Description
void	cloak()	Hides all current environment values, making the Environment object appear empty, until a call to Environment.decloak()} restores the original state.
void	decloak()	Restores state previously hidden by Environment.cloak()}.
<T> T	peek(Class<T> type)	Peeks at the current top of the indicated stack.
<T> T	peekRequired(Class<T> type)	Peeks at the current top of the indicated stack (which must have a non-null value).
<T> T	pop(Class<T> type)	Removes and returns the top environmental object of the selected type.
<T> T	push(Class<T> type, T instance)	Pushes a new service onto the stack.
void	threadDidCleanup()

Methods inherited from class java.lang.Object

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

Constructor Detail

EnvironmentImpl

public EnvironmentImpl()

Method Detail

peek

public <T> T peek(Class<T> type)

Description copied from interface: Environment

Peeks at the current top of the indicated stack.

Specified by:

peek in interface Environment

Type Parameters:

T - the type of environmental object

Parameters:

type - class used to select the object

Returns:

the current object of that type, or null if no service of that type has been added

peekRequired

public <T> T peekRequired(Class<T> type)

Description copied from interface: Environment

Peeks at the current top of the indicated stack (which must have a non-null value).

Specified by:

peekRequired in interface Environment

Type Parameters:

T - the type of environmental object

Parameters:

type - class used to select the object

Returns:

the current object of the specified type

pop

public <T> T pop(Class<T> type)

Description copied from interface: Environment

Removes and returns the top environmental object of the selected type.

Specified by:

pop in interface Environment

Type Parameters:

T - the type of environmental object

Parameters:

type - class used to select the object

Returns:

the object just removed

push

public <T> T push(Class<T> type,
                  T instance)

Description copied from interface: Environment

Pushes a new service onto the stack. The old service at the top of the stack is returned (it may be null).

Specified by:

push in interface Environment

Type Parameters:

T - the type of environmental object

Parameters:

type - class used to select the object

instance - the service object

Returns:

the previous top service

threadDidCleanup

public void threadDidCleanup()

cloak

public void cloak()

Description copied from interface: Environment

Hides all current environment values, making the Environment object appear empty, until a call to Environment.decloak()} restores the original state.

Specified by:

cloak in interface Environment

See Also:

TapestryConstants.RESPONSE_RENDERER

decloak

public void decloak()

Description copied from interface: Environment

Restores state previously hidden by Environment.cloak()}.

Specified by:

decloak in interface Environment

See Also:

TapestryConstants.RESPONSE_RENDERER