Package org.incenp.obofoundry.sssom.extract

Class MappingSlotExtractor

java.lang.Object

org.incenp.obofoundry.sssom.extract.MappingValueExtractor

org.incenp.obofoundry.sssom.extract.MappingSlotExtractor

All Implemented Interfaces:

IValueExtractor

public class MappingSlotExtractor
extends MappingValueExtractor

Extracts the value of a slot from a mapping object.

This is the extractor used by an expression of the form mapping(N).slot.SLOTNAME.

Field Summary

Fields

Modifier and Type	Field	Description
protected SlotExtractor<Mapping>	slotExtractor

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

mappingNo

Constructor Summary

Constructors

Constructor	Description
MappingSlotExtractor(int mappingNo, Slot<Mapping> slot, int itemNo)	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

Field Details

slotExtractor

protected SlotExtractor<Mapping> slotExtractor

Constructor Details

MappingSlotExtractor

public MappingSlotExtractor(int mappingNo,
 Slot<Mapping> slot,
 int itemNo)

Creates a new instance.

Parameters:

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

slot - The mapping slot to extract.

itemNo - The 0-based index of the value to extract, or (if negative) the 1-based index starting from the last item. This is only meaningful for a multi-valued slot.

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.