Binding (Apache Jena ARQ)

All Known Subinterfaces:

BindingMap

All Known Implementing Classes:

Binding0, Binding1, Binding2, Binding3, Binding4, BindingBase, BindingHashMap, BindingOverMap, BindingProject, BindingProjectBase, BindingProjectNamed, BindingRoot
```
public interface Binding
```
Interface encapsulating a mapping from a name to a value.
A Binding is a map from Var to Node. It can have a parent, meaning this binding extends (adds new var/node pairs) another. The operation get(org.apache.jena.sparql.core.Var) looks in this binding, then looks in the parent recursively. Bindings are immutable. Bindings provide value-based equality and hash code.

See Also:

BindingBuilder, BindingFactory

Field Summary

Fields
Modifier and Type Field Description

static Binding noParent

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static BindingBuilder`	`builder()`	Create a `BindingBuilder`
`static BindingBuilder`	`builder(Binding parent)`	Create a `BindingBuilder`
`boolean`	`contains(Var var)`	Test whether a variable is bound to some object
`boolean`	`equals(java.lang.Object other)`
`void`	`forEach(java.util.function.BiConsumer<Var,Node> action)`	Operate on each entry.
`Node`	`get(Var var)`	Return the object bound to a variable, or null
`int`	`hashCode()`
`boolean`	`isEmpty()`	Is this an empty binding? No variables.
`int`	`size()`	Number of (var, value) pairs.
`java.util.Iterator<Var>`	`vars()`	Iterate over all variables of this binding.

- Field Detail
  - noParent
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static final Binding noParent
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- Method Detail
  - builder
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static BindingBuilder builder()
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    Create a BindingBuilder
  - builder
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static BindingBuilder builder(Binding parent)
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    Create a BindingBuilder
  - vars
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java.util.Iterator<Var> vars()
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    Iterate over all variables of this binding.
  - forEach
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void forEach(java.util.function.BiConsumer<Var,Node> action)
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    Operate on each entry.
  - contains
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boolean contains(Var var)
```
    Test whether a variable is bound to some object
  - get
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Node get(Var var)
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    Return the object bound to a variable, or null
  - size
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int size()
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    Number of (var, value) pairs.
  - isEmpty
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boolean isEmpty()
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    Is this an empty binding? No variables.
  - hashCode
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int hashCode()
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    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
boolean equals(java.lang.Object other)
```
    Overrides:
    
    equals in class java.lang.Object