SExpressionExtractor (SSSOM-Java 1.11.2 API)

java.lang.Object
- org.incenp.obofoundry.sssom.extract.MappingValueExtractor
- - org.incenp.obofoundry.sssom.extract.SExpressionExtractor

All Implemented Interfaces:

IValueExtractor
```
public class SExpressionExtractor
extends MappingValueExtractor
```
Extracts the canonical S-expression that represents a mapping.
This is used by expressions of the form mapping(N).special.sexpr.

Field Summary
- Fields inherited from class org.incenp.obofoundry.sssom.extract.MappingValueExtractor
  mappingNo

Constructor Summary

Constructors
Constructor Description

SExpressionExtractor(int mappingNo)
Creates a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`extract(Mapping mapping)`	Extracts the desired value from the given mapping.
`Class<?>`	`getType()`	Gets the type of the value that would be returned by `IValueExtractor.extract(MappingSet)`.

Methods inherited from class org.incenp.obofoundry.sssom.extract.MappingValueExtractor
extract

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

- Constructor Detail
  - SExpressionExtractor
```
public SExpressionExtractor(int mappingNo)
```
    Creates a new instance.
    
    Parameters:
    
    mappingNo - The 0-based index of the mapping from which to extract the S-expression, or (if negative) the 1-based index starting from the last mapping.
- Method Detail
  - extract
```
public Object extract(Mapping mapping)
```
    Description copied from class: MappingValueExtractor
    
    Extracts the desired value from the given mapping.
    
    Specified by:
    
    extract in class MappingValueExtractor
    
    Parameters:
    
    mapping - The mapping from which to extract the value.
    
    Returns:
    
    The desired value, or null if the mapping does not have a value at the specified location.
  - getType
```
public Class<?> getType()
```
    Description copied from interface: IValueExtractor
    
    Gets the type of the value that would be returned by IValueExtractor.extract(MappingSet).
    
    Returns:
    
    The actual Java class of the object representing the extracted value.