PathExpression (yangtools-docs 4.0.3 API)

All Superinterfaces:

Immutable, MutationBehaviour<Immutable>

All Known Implementing Classes:

AbstractPathExpression, PathExpressionImpl
```
@Beta
@NonNullByDefault
public interface PathExpression
extends Immutable
```
An expression as defined in RFC7950 Section 9.9.2, i.e. the argument of a path statement.
Semantically a PathExpression is similar to a YangXPathExpression with guarantees around what subexpressions it can contain:
- the root expression must be a YangLocationPath
- it can contain steps only along YangXPathAxis.CHILD and YangXPathAxis.PARENT axis
- all steps along YangXPathAxis.CHILD axis are YangLocationPath.QNameStep
- the only function invocation is YangFunction.CURRENT
- only YangBinaryOperator.EQUALS is allowed
- no literals nor numbers are allowed
- all qualified node identifiers must me resolved
Author:

Robert Varga

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`YangLocationPath`	`getLocation()`	Return the `YangLocationPath` of this expression.
`String`	`getOriginalString()`	Returns the path expression formatted string as is defined in model.
`default boolean`	`isAbsolute()`	Returns `true` if the XPapth starts in root of YANG model, otherwise returns `false`.

- Method Detail
  - getOriginalString
```
String getOriginalString()
```
    Returns the path expression formatted string as is defined in model. For example: /prefix:container/prefix:container::cond[when()=foo]/prefix:leaf
    
    Returns:
    
    the path expression formatted string as is defined in model.
  - getLocation
```
YangLocationPath getLocation()
```
    Return the YangLocationPath of this expression.
    
    Returns:
    
    The location path
    
    Throws:
    
    UnsupportedOperationException - if the implementation has not parsed the string. Implementations are strongly encouraged to perform proper parsing.
  - isAbsolute
```
default boolean isAbsolute()
```
    Returns true if the XPapth starts in root of YANG model, otherwise returns false.
    
    Returns:
    
    true if the XPapth starts in root of YANG model, otherwise returns false