BindingEnvironment (Apache Jena)

All Known Implementing Classes:

BindingStack, BindingVector, LPBindingEnvironment
```
public interface BindingEnvironment
```
Interface through which the current bound values of variables can be found. Many of the details vary between the forward and backward chaining system - this interface is the minimal one needed by most builtins the specific implementations offer richer functionality.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`bind(Node var, Node value)`	Bind a variable in the current environment to the given value.
`Node`	`getGroundVersion(Node node)`	Return the most ground version of the node.
`Triple`	`instantiate(TriplePattern pattern)`	Instantiate a triple pattern against the current environment.

- Method Detail
  - getGroundVersion
```
Node getGroundVersion(Node node)
```
    Return the most ground version of the node. If the node is not a variable just return it, if it is a variable bound in this environment return the binding, if it is an unbound variable return the variable.
  - bind
```
boolean bind(Node var,
             Node value)
```
    Bind a variable in the current environment to the given value. Checks that the new binding is compatible with any current binding.
    
    Parameters:
    
    var - a Node_RuleVariable defining the variable to bind
    
    value - the value to bind
    
    Returns:
    
    false if the binding fails
  - instantiate
```
Triple instantiate(TriplePattern pattern)
```
    Instantiate a triple pattern against the current environment. This version handles unbound variables by turning them into bNodes.
    
    Parameters:
    
    pattern - the triple pattern to match
    
    Returns:
    
    a new, instantiated triple