Package org.eclipse.rdf4j.query
Interface BindingSet
- All Superinterfaces:
Iterable<Binding>
,Serializable
- All Known Subinterfaces:
MutableBindingSet
- All Known Implementing Classes:
AbstractBindingSet
,ArrayBindingSet
,EmptyBindingSet
,FedXPathIteration.ValuePair
,ListBindingSet
,MapBindingSet
,PathIteration.ValuePair
,QueryBindingSet
,SimpleBindingSet
,SingletonBindingSet
,SPARQLQueryBindingSet
A BindingSet is a set of named value bindings, which is used a.o. to represent a single query solution. Values are
indexed by name of the binding which typically corresponds to the names of the variables used in the projection of
the orginal query.
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Method Summary
Modifier and TypeMethodDescriptionboolean
Compares a BindingSet object to another object.getBinding
(String bindingName) Gets the binding with the specified name from this BindingSet.Gets the names of the bindings in this BindingSet.Gets the value of the binding with the specified name from this BindingSet.boolean
hasBinding
(String bindingName) Checks whether this BindingSet has a binding with the specified name.int
hashCode()
The hash code of a binding is defined as the bit-wise XOR of the hash codes of its bindings:default boolean
isEmpty()
iterator()
Creates an iterator over the bindings in this BindingSet.int
size()
Returns the number of bindings in this BindingSet.Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Method Details
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iterator
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getBindingNames
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getBinding
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hasBinding
Checks whether this BindingSet has a binding with the specified name.- Parameters:
bindingName
- The name of the binding.- Returns:
- true if this BindingSet has a binding with the specified name, false otherwise.
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getValue
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size
int size()Returns the number of bindings in this BindingSet.- Returns:
- The number of bindings in this BindingSet.
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equals
Compares a BindingSet object to another object.- Overrides:
equals
in classObject
- Parameters:
o
- The object to compare this binding to.- Returns:
- true if the other object is an instance of
BindingSet
and it contains the same set of bindings (disregarding order), false otherwise.
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hashCode
int hashCode()The hash code of a binding is defined as the bit-wise XOR of the hash codes of its bindings:int hashCode = 0; for (Binding binding : this) { hashCode ˆ= binding.getName().hashCode() ˆ binding.getValue().hashCode(); }
Note: the calculated hash code intentionally does not depend on the order in which the bindings are iterated over.
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isEmpty
default boolean isEmpty()
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