Package org.apache.jena.rdf.model
Interface ModelMaker
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- All Superinterfaces:
ModelGetter
,ModelSource
- All Known Implementing Classes:
ModelMakerImpl
public interface ModelMaker extends ModelSource
A ModelMaker contains a collection of named models, methods for creating new models [both named and anonymous] and opening previously-named models, removing models, and accessing a single "default" Model for this Maker.Additional constraints are placed on a ModelMaker as compared to its ancestor
ModelSource
. ModelMakers do not arbitrarily forget their contents - once they contain a named model, that model stays inside the ModelMaker until that ModelMaker goes away, and maybe for longer (eg if the ModelMaker fronted a database or directory). And new models can be added to a ModelMaker.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
close()
Close the factory - no more requests need be honoured, and any clean-up can be done.Model
createModel(java.lang.String name)
Create a Model with the given name if no such model exists.Model
createModel(java.lang.String name, boolean strict)
Create a new Model associated with the given name.GraphMaker
getGraphMaker()
Answer a GraphMaker that makes graphs the same way this ModelMaker makes models.boolean
hasModel(java.lang.String name)
return true iff the factory has a Model with the given nameExtendedIterator<java.lang.String>
listModels()
Answer an [extended] iterator where each element is the name of a model in the maker, and the complete sequence exhausts the set of names.Model
openModel(java.lang.String name, boolean strict)
Find an existing Model that this factory knows about under the given name.void
removeModel(java.lang.String name)
Remove the association between the name and the Model.-
Methods inherited from interface org.apache.jena.rdf.model.ModelGetter
getModel, getModel
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Methods inherited from interface org.apache.jena.rdf.model.ModelSource
createDefaultModel, createFreshModel, openModel, openModelIfPresent
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Method Detail
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createModel
Model createModel(java.lang.String name, boolean strict)
Create a new Model associated with the given name. If there is no such association, create one and return it. If one exists butstrict
is false, return the associated Model. Otherwise throw an AlreadyExistsException.- Parameters:
name
- the name to give to the new Modelstrict
- true to cause existing bindings to throw an exception- Throws:
AlreadyExistsException
- if that name is already bound.
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createModel
Model createModel(java.lang.String name)
Create a Model with the given name if no such model exists. Otherwise, answer the existing model. Equivalent tocreateModel( name, false )
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openModel
Model openModel(java.lang.String name, boolean strict)
Find an existing Model that this factory knows about under the given name. If such a Model exists, return it. Otherwise, ifstrict
is false, create a new Model, associate it with the name, and return it. Otherwise throw a DoesNotExistException.When called with
strict=false
, is equivalent to the ancestoropenModel(String)
method.- Parameters:
name
- the name of the Model to find and returnstrict
- false to create a new one if one doesn't already exist- Throws:
DoesNotExistException
- if there's no such named Model
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removeModel
void removeModel(java.lang.String name)
Remove the association between the name and the Model. create will now be able to create a Model with that name, and open will no longer be able to find it. Throws an exception if there's no such Model. The Model itself is not touched.- Parameters:
name
- the name to disassociate- Throws:
DoesNotExistException
- if the name is unbound
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hasModel
boolean hasModel(java.lang.String name)
return true iff the factory has a Model with the given name- Parameters:
name
- the name of the Model to look for- Returns:
- true iff there's a Model with that name
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close
void close()
Close the factory - no more requests need be honoured, and any clean-up can be done.
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getGraphMaker
GraphMaker getGraphMaker()
Answer a GraphMaker that makes graphs the same way this ModelMaker makes models. In general this will be an underlying GraphMaker.
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listModels
ExtendedIterator<java.lang.String> listModels()
Answer an [extended] iterator where each element is the name of a model in the maker, and the complete sequence exhausts the set of names. No particular order is expected from the list.- Returns:
- an extended iterator over the names of models known to this Maker.
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