Package org.incenp.obofoundry.sssom.extract

Class MappingValueExtractor

java.lang.Object

org.incenp.obofoundry.sssom.extract.MappingValueExtractor

All Implemented Interfaces:

IValueExtractor

Direct Known Subclasses:

HashExtractor, MappingExtensionExtractor, MappingSlotExtractor, SExpressionExtractor

public abstract class MappingValueExtractor
extends Object
implements IValueExtractor

Base class for extractors that extract a value from a specific mapping record.

This is used by all expressions of the form mapping. or mapping(N)..

Field Summary

Fields

Modifier and Type	Field	Description
protected int	mappingNo

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MappingValueExtractor(int mappingNo)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
protected abstract Object	extract(Mapping mapping)	Extracts the desired value from the given mapping.
Object	extract(MappingSet ms)	Extracts the desired value from the given mapping set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.incenp.obofoundry.sssom.extract.IValueExtractor

getType

Field Details

mappingNo

protected int mappingNo

Constructor Details

MappingValueExtractor

protected MappingValueExtractor(int mappingNo)

Creates a new instance.

Parameters:

mappingNo - If non-negative, the 0-based index of the mapping from which to extract a value. If negative, the 1-based index starting from the last mapping of the set.

Method Details

extract

public Object extract(MappingSet ms)

Description copied from interface: IValueExtractor

Extracts the desired value from the given mapping set.

Specified by:

extract in interface IValueExtractor

Parameters:

ms - The mapping set from which to extract the value.

Returns:

The desired value, or null if the set does not contain a value at the specified location.

extract

protected abstract Object extract(Mapping mapping)

Extracts the desired value from the given mapping.

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.