JoinKey.Builder (Apache Jena ARQ)

java.lang.Object
- org.apache.jena.sparql.engine.join.JoinKey.Builder

Enclosing class:

JoinKey
```
public static final class JoinKey.Builder
extends java.lang.Object
```
The builder can emit a key every time build() is caller and it can be continued to be used.

Constructor Summary

Constructors
Constructor Description

Builder()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`JoinKey.Builder`	`add(Var var)`
`JoinKey`	`build()`
`JoinKey.Builder`	`clear()`
`boolean`	`contains(Var var)`
`JoinKey.Builder`	`remove(Var var)`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Builder
```
public Builder()
```

Method Detail

contains
```
public boolean contains(Var var)
```

add

public JoinKey.Builder add(Var var)

remove

public JoinKey.Builder remove(Var var)

clear
```
public JoinKey.Builder clear()
```

build
```
public JoinKey build()
```