Package org.incenp.obofoundry.sssom.extract

Class HashExtractor

java.lang.Object

org.incenp.obofoundry.sssom.extract.MappingValueExtractor

org.incenp.obofoundry.sssom.extract.HashExtractor

All Implemented Interfaces:

IValueExtractor

public class HashExtractor
extends MappingValueExtractor

Extracts the standard SSSOM hash for a mapping.

This is used by expressions of the form mapping(N).special.hash.

Field Summary

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

mappingNo

Constructor Summary

Constructors

Constructor	Description
HashExtractor(int mappingNo)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
protected 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 Details

HashExtractor

public HashExtractor(int mappingNo)

Creates a new instance.

Parameters:

mappingNo - The 0-based index of the mapping from which to extract the hash, or (if negative) the 1-based index starting from the last mapping.

Method Details

extract

protected 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.