Class MakeInstance
- java.lang.Object
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- org.apache.jena.reasoner.rulesys.builtins.BaseBuiltin
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- org.apache.jena.reasoner.rulesys.builtins.MakeInstance
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- All Implemented Interfaces:
Builtin
public class MakeInstance extends BaseBuiltin
Create or lookup an anonymous instance of a property value. Syntax of the call is:makeInstance(X, P, D, T) or makeInstance(X, P, T)
where X is the instance and P the property for which a temporary value is required, T will be bound to the temp value (a bNode) and D is an optional type cor the T value.
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Field Summary
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Fields inherited from class org.apache.jena.reasoner.rulesys.builtins.BaseBuiltin
BASE_URI
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Constructor Summary
Constructors Constructor Description MakeInstance()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
bodyCall(Node[] args, int length, RuleContext context)
This method is invoked when the builtin is called in a rule body.java.lang.String
getName()
Return a name for this builtin, normally this will be the name of the functor that will be used to invoke it.-
Methods inherited from class org.apache.jena.reasoner.rulesys.builtins.BaseBuiltin
checkArgs, getArg, getArgLength, getURI, headAction, isMonotonic, isSafe
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Method Detail
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getName
public java.lang.String getName()
Return a name for this builtin, normally this will be the name of the functor that will be used to invoke it.
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bodyCall
public boolean bodyCall(Node[] args, int length, RuleContext context)
This method is invoked when the builtin is called in a rule body.- Specified by:
bodyCall
in interfaceBuiltin
- Overrides:
bodyCall
in classBaseBuiltin
- Parameters:
args
- the array of argument values for the builtin, this is an array of Nodes, some of which may be Node_RuleVariables.length
- the length of the argument list, may be less than the length of the args array for some rule enginescontext
- an execution context giving access to other relevant data- Returns:
- return true if the buildin predicate is deemed to have succeeded in the current environment
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