Class PathIteration.ValuePair
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.evaluation.iterator.PathIteration.ValuePair
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- All Implemented Interfaces:
Serializable,Iterable<Binding>,BindingSet,MutableBindingSet
- Enclosing class:
- PathIteration
public static class PathIteration.ValuePair extends Object implements MutableBindingSet
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:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaddBinding(Binding binding)Adds a binding to the binding set.booleanequals(Object obj)Compares a BindingSet object to another object.BindinggetBinding(String bindingName)Gets the binding with the specified name from this BindingSet.Set<String>getBindingNames()Gets the names of the bindings in this BindingSet.ValuegetEndValue()ValuegetStartValue()ValuegetValue(String bindingName)Gets the value of the binding with the specified name from this BindingSet.booleanhasBinding(String bindingName)Checks whether this BindingSet has a binding with the specified name.inthashCode()The hash code of a binding is defined as the bit-wise XOR of the hash codes of its bindings:Iterator<Binding>iterator()Creates an iterator over the bindings in this BindingSet.voidsetBinding(String name, Value value)voidsetBinding(Binding binding)intsize()Returns the number of bindings in this BindingSet.-
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.query.BindingSet
isEmpty
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Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Methods inherited from interface org.eclipse.rdf4j.query.MutableBindingSet
addBinding
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Method Detail
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getStartValue
public Value getStartValue()
- Returns:
- Returns the startValue.
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getEndValue
public Value getEndValue()
- Returns:
- Returns the endValue.
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hashCode
public int hashCode()
Description copied from interface:BindingSetThe 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:
hashCodein interfaceBindingSet- Overrides:
hashCodein classObject- Returns:
- A hash code for the BindingSet.
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equals
public boolean equals(Object obj)
Description copied from interface:BindingSetCompares a BindingSet object to another object.- Specified by:
equalsin interfaceBindingSet- Overrides:
equalsin classObject- Parameters:
obj- The object to compare this binding to.- Returns:
- true if the other object is an instance of
BindingSetand it contains the same set of bindings (disregarding order), false otherwise.
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iterator
public Iterator<Binding> iterator()
Description copied from interface:BindingSetCreates 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:
iteratorin interfaceBindingSet- Specified by:
iteratorin interfaceIterable<Binding>
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getBindingNames
public Set<String> getBindingNames()
Description copied from interface:BindingSetGets the names of the bindings in this BindingSet.- Specified by:
getBindingNamesin interfaceBindingSet- Returns:
- A set of binding names.
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getBinding
public Binding getBinding(String bindingName)
Description copied from interface:BindingSetGets the binding with the specified name from this BindingSet.- Specified by:
getBindingin 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
public boolean hasBinding(String bindingName)
Description copied from interface:BindingSetChecks whether this BindingSet has a binding with the specified name.- Specified by:
hasBindingin 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
public Value getValue(String bindingName)
Description copied from interface:BindingSetGets the value of the binding with the specified name from this BindingSet.- Specified by:
getValuein 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:BindingSetReturns the number of bindings in this BindingSet.- Specified by:
sizein interfaceBindingSet- Returns:
- The number of bindings in this BindingSet.
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addBinding
public void addBinding(Binding binding)
Description copied from interface:MutableBindingSetAdds a binding to the binding set.- Specified by:
addBindingin interfaceMutableBindingSet- Parameters:
binding- The binding to add to the binding set.
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setBinding
public void setBinding(String name, Value value)
- Specified by:
setBindingin interfaceMutableBindingSet
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setBinding
public void setBinding(Binding binding)
- Specified by:
setBindingin interfaceMutableBindingSet
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