%Projection.AbstractProjection
abstract class %Projection.AbstractProjection extends %Library.Base
This abstract class defines the Projection interface which is implemented by one of the various subclasses of this class.A class definition may include one or more Projection definitions; each one of which refers to a specific Projection class (a subclass of this class). The Projection interface defines methods that are invoked by the Class Compiler at certain points within a class compilation. Specifically, there is a method, CreateProjection() that is called when a class has been compiled, and another, RemoveProjection() that is called when a class is about to be recompiled or deleted.
The expected use of a Projection class is to provide a way to automatically generate associated files (such as those used by the Java Binding) whenever a class is compiled. If the projection creates globals or other items that need to be packaged with this class in the event we wish to move this class in a deployment package then add these items in the AddToManifest() call.
Method Inventory
- AddToManifest()
- CreateProjection()
- EndCompile()
- QueueClass()
- RemoveFromManifest()
- RemoveFromQueue()
- RemoveProjection()
- SetQueueFlag()
- getDefaultParam()
- getROOTDIR()
Parameters
parameter DisableMulticompile = 0;
If true then do not create this projection using the class compiler multicompile
jobs but create it in the main process. Used to allow projections that do not function
in the multicompile environement to disable this feature.
Methods
classmethod AddToManifest(classname, item) as %Status
Call this helper method to add a component to the class manifest. For example if the projection of
a class creates ^gbl(classname) nodes that describe some data about the projected class then you
should add 'gbl("classname").gbl' to the manifest so if we create a deployment package of this class
we will also include any items in the manifest automatically.
classmethod CreateProjection(classname As %String, ByRef parameters As %String, modified As %String, qstruct) as %Status
This method is called by the Class Compiler whenever an associated
class has finished compiling. classname contains the name of
the associated class while parameters contains an array of the
projection parameters subscripted by parameter name. Also the special parameter value
parameters("%qstruct") contains a merge of the qstruct array this projection is being
compiled with. The modified is always blank.
Any errors reported by this method are reported by the Class Compiler but do not effect class compilation in any way.
Any errors reported by this method are reported by the Class Compiler but do not effect class compilation in any way.
classmethod EndCompile(qstruct) as %Status
This is called as close to the end of the compile as possible so it can do cleanup work or more
usefully it can avoid doing work multiple times. For example if class User.A would modify MyFile.txt
normally in the CreateProjection() method and class User.B would normally modify the same
file when it is compiled and you compile both these classes together then you may end up generating
MyFile.txt twice and so doing duplicate work. By changing this so CreateProjection() just
adds 'MyFile.txt' to the queue of things to be done and then processing this list in this method, making
sure to only do each piece of work once, you can process the fully up to date state of User.A and User.B
to create the correct MyFile.txt just once.
Note that this method will be called just once per projection subclass, so CreateProjection() may be called multiple times for each class with this projection type, but this method will only be called once at the end of the compile.
classmethod QueueClass(classname)
This is a helper method for implementors of projection classes. This
method provides a mechanism for to make sure additional classes are compiled.
Typically these would be new classes created by the projection itself.
You should not directly invoke the Class Compiler from a projection method, instead, invoke this method to request that the class classname be placed in a queue of classes that will be compiled at the end of the current compilation operation.
You should not directly invoke the Class Compiler from a projection method, instead, invoke this method to request that the class classname be placed in a queue of classes that will be compiled at the end of the current compilation operation.
classmethod RemoveFromManifest(classname, item) as %Status
Called when you remove a projected item to remove this from the manifest.
classmethod RemoveFromQueue(classname)
Can be called to remove a queued class from the queued class list created with
QueueClass()
classmethod RemoveProjection(classname As %String, ByRef parameters As %String, recompile As %Boolean, modified As %String, qstruct) as %Status
This method is called by the Class Compiler whenever an associated
class is either a) about to be recompiled, or b) about to be deleted.
classname contains the name of the associated class while
parameters contains an array of the projection parameters
subscripted by parameter name. Also the special parameter value
parameters("%qstruct") contains a merge of the qstruct array this projection is being
compiled with. recompile is true (1) if the
associated class is about to be recompiled. The modified is always blank.
Any errors reported by this method are reported by the Class Compiler but do not effect class compilation in any way.
Any errors reported by this method are reported by the Class Compiler but do not effect class compilation in any way.
classmethod SetQueueFlag(flag)
classmethod getDefaultParam(parameters, type, paramname, default) as %String
classmethod getROOTDIR(parameters, type) as %String
Inherited Members
Inherited Methods
Subclasses
- %Api.InteropEditors.OnGeneration
- %Api.InteropEditors.v1.OnGeneration
- %DeepSee.CubeProjection
- %DeepSee.KPIProjection
- %DeepSee.ListingGroupProjection
- %DeepSee.QualityMeasure.QualityMeasureProjection
- %DeepSee.Report.ReportProjection
- %DeepSee.SubjectAreaProjection
- %Projection.ForeignTableProjection
- %Projection.Java
- %Projection.MV
- %Projection.Shard
- %Projection.StudioDocument
- %SYS.Python.Traits
- %Studio.Extension.Projection
- %ZEN.DataModel.DocumentProjection
- %ZEN.ObjectProjection
- %ZEN.PageProjection
- %ZEN.Template.TemplateProjection