Class FedXPathIteration.ValuePair
java.lang.Object
org.eclipse.rdf4j.federated.evaluation.iterator.FedXPathIteration.ValuePair
- All Implemented Interfaces:
Serializable
,Iterable<Binding>
,BindingSet
,MutableBindingSet
- Enclosing class:
FedXPathIteration
A specialized BingingSet that can only hold the start and end values of a Path. Minimizing unneeded memory use,
and allows specialization in the sets required to answer this part of a query.
- See Also:
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
addBinding
(Binding binding) Adds a binding to the binding set.boolean
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:iterator()
Creates an iterator over the bindings in this BindingSet.void
setBinding
(String name, Value value) void
setBinding
(Binding binding) int
size()
Returns the number of bindings in this BindingSet.Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.eclipse.rdf4j.query.BindingSet
isEmpty
Methods inherited from interface java.lang.Iterable
forEach, spliterator
Methods inherited from interface org.eclipse.rdf4j.query.MutableBindingSet
addBinding
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Constructor Details
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ValuePair
public ValuePair() -
ValuePair
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Method Details
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getStartValue
- Returns:
- Returns the startValue.
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getEndValue
- Returns:
- Returns the endValue.
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hashCode
public int hashCode()Description copied from interface:BindingSet
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.
- Specified by:
hashCode
in interfaceBindingSet
- Overrides:
hashCode
in classObject
- Returns:
- A hash code for the BindingSet.
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equals
Description copied from interface:BindingSet
Compares a BindingSet object to another object.- Specified by:
equals
in interfaceBindingSet
- Overrides:
equals
in classObject
- Parameters:
obj
- 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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iterator
Description copied from interface:BindingSet
Creates an iterator over the bindings in this BindingSet. This only returns bindings with non-null values. An implementation is free to return the bindings in arbitrary order.- Specified by:
iterator
in interfaceBindingSet
- Specified by:
iterator
in interfaceIterable<Binding>
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getBindingNames
Description copied from interface:BindingSet
Gets the names of the bindings in this BindingSet.- Specified by:
getBindingNames
in interfaceBindingSet
- Returns:
- A set of binding names.
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getBinding
Description copied from interface:BindingSet
Gets the binding with the specified name from this BindingSet.- Specified by:
getBinding
in interfaceBindingSet
- Parameters:
bindingName
- The name of the binding.- Returns:
- The binding with the specified name, or null if there is no such binding in this BindingSet.
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hasBinding
Description copied from interface:BindingSet
Checks whether this BindingSet has a binding with the specified name.- Specified by:
hasBinding
in interfaceBindingSet
- 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
Description copied from interface:BindingSet
Gets the value of the binding with the specified name from this BindingSet.- Specified by:
getValue
in interfaceBindingSet
- Parameters:
bindingName
- The name of the binding.- Returns:
- The value of the binding with the specified name, or null if there is no such binding in this BindingSet.
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size
public int size()Description copied from interface:BindingSet
Returns the number of bindings in this BindingSet.- Specified by:
size
in interfaceBindingSet
- Returns:
- The number of bindings in this BindingSet.
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addBinding
Description copied from interface:MutableBindingSet
Adds a binding to the binding set.- Specified by:
addBinding
in interfaceMutableBindingSet
- Parameters:
binding
- The binding to add to the binding set.
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setBinding
- Specified by:
setBinding
in interfaceMutableBindingSet
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setBinding
- Specified by:
setBinding
in interfaceMutableBindingSet
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