net.esper.view
Class ViewFactorySupport
java.lang.Object
net.esper.view.ViewFactorySupport
- All Implemented Interfaces:
- ViewFactory
public abstract class ViewFactorySupport
- extends Object
- implements ViewFactory
Abstract base class for view factories that do not make re-useable views and that do
not share view resources with expression nodes.
Method Summary |
boolean |
canProvideCapability(ViewCapability viewCapability)
Returns true if the view factory can make views that provide a view resource with the
given capability. |
boolean |
canReuse(View view)
Determines if the given view could be used instead of creating a new view,
requires the view factory to compare view type, parameters and other capabilities provided. |
void |
setProvideCapability(ViewCapability viewCapability,
ViewResourceCallback resourceCallback)
Indicates to the view factory to provide the view resource indicated. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ViewFactorySupport
public ViewFactorySupport()
canProvideCapability
public boolean canProvideCapability(ViewCapability viewCapability)
- Description copied from interface:
ViewFactory
- Returns true if the view factory can make views that provide a view resource with the
given capability.
- Specified by:
canProvideCapability
in interface ViewFactory
- Parameters:
viewCapability
- is the view resource needed
- Returns:
- true to indicate that the view can provide the resource, or false if not
setProvideCapability
public void setProvideCapability(ViewCapability viewCapability,
ViewResourceCallback resourceCallback)
- Description copied from interface:
ViewFactory
- Indicates to the view factory to provide the view resource indicated.
- Specified by:
setProvideCapability
in interface ViewFactory
- Parameters:
viewCapability
- is the required resource descriptorresourceCallback
- is the callback to use to supply the resource needed
canReuse
public boolean canReuse(View view)
- Description copied from interface:
ViewFactory
- Determines if the given view could be used instead of creating a new view,
requires the view factory to compare view type, parameters and other capabilities provided.
- Specified by:
canReuse
in interface ViewFactory
- Parameters:
view
- is the candidate view to compare to
- Returns:
- true if the given view can be reused instead of creating a new view, or false to indicate
the view is not right for reuse