ShiftTransition (Stanford JavaNLP API)

java.lang.Object
- edu.stanford.nlp.parser.shiftreduce.ShiftTransition

All Implemented Interfaces:

Transition, Serializable
```
public class ShiftTransition
extends Object
implements Transition
```
Transition that moves a single item from the front of the queue to the top of the stack without making any other changes.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ShiftTransition()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`State`	`apply(State state)`	Add the new preterminal to the stack, increment the queue position.
`State`	`apply(State state, double scoreDelta)`	Add the new preterminal to the stack, increment the queue position.
`boolean`	`equals(Object o)`
`int`	`hashCode()`
`boolean`	`isLegal(State state, List<ParserConstraint> constraints)`	Shifting is legal as long as the state is not finished and there are more items on the queue to be shifted.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ShiftTransition
```
public ShiftTransition()
```
- Method Detail
  - isLegal
```
public boolean isLegal(State state,
                       List<ParserConstraint> constraints)
```
    Shifting is legal as long as the state is not finished and there are more items on the queue to be shifted. TODO: go through the papers and make sure they don't mention any other conditions where one shouldn't shift
    
    Specified by:
    
    isLegal in interface Transition
  - apply
```
public State apply(State state)
```
    Add the new preterminal to the stack, increment the queue position.
    
    Specified by:
    
    apply in interface Transition
  - apply
```
public State apply(State state,
                   double scoreDelta)
```
    Add the new preterminal to the stack, increment the queue position.
    
    Specified by:
    
    apply in interface Transition
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object