Package org.incenp.obofoundry.sssom.extract

Class SlotExtractor<T>

java.lang.Object

org.incenp.obofoundry.sssom.slots.SlotVisitorBase<T>

org.incenp.obofoundry.sssom.extract.SlotExtractor<T>

Type Parameters:

T - The type of object from which to extract a slot value (MappingSet or Mapping).

All Implemented Interfaces:

ISlotVisitor<T>

public class SlotExtractor<T>
extends SlotVisitorBase<T>

Common logic used by both the MappingSetSlotExtractor and the MappingSlotExtractor classes.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	itemNo
protected Slot<T>	slot

Constructor Summary

Constructors

Constructor	Description
SlotExtractor(Slot<T> slot)	Creates a new instance.
SlotExtractor(Slot<T> slot, int itemNo)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
Object	getSlotValue(T object)	Performs the actual extraction.
Class<?>	getType()	Returns the type of the extracted value.
void	visit(Slot<T> slot, T object, Object value)	Visits a generic slot.
void	visit(StringSlot<T> slot, T object, List<String> values)	Visits a multi-valued string-typed slot.

Methods inherited from class org.incenp.obofoundry.sssom.slots.SlotVisitorBase

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Field Detail

slot

protected Slot<T> slot

itemNo

protected int itemNo

Constructor Detail

SlotExtractor

public SlotExtractor(Slot<T> slot)

Creates a new instance.

If the slot is a multi-valued slot, this will extract the first value.

Parameters:

slot - The slot to extract.

SlotExtractor

public SlotExtractor(Slot<T> slot,
                     int itemNo)

Creates a new instance.

Parameters:

slot - The slot to extract.

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

Method Detail

getSlotValue

public Object getSlotValue(T object)

Performs the actual extraction.

Parameters:

object - The object from which to extract the slot value.

Returns:

The extract value, or null if the object does not have a value at the specified location.

getType

public Class<?> getType()

Returns the type of the extracted value.

Returns:

The type of the value that would be returned by getSlotValue(Object).

visit

public void visit(Slot<T> slot,
                  T object,
                  Object value)

Description copied from interface: ISlotVisitor

Visits a generic slot.

This method is normally not used as all slots in a SSSOM object have more precise types. But it can be used to implement behaviours that should be common to several slot types.

Specified by:

visit in interface ISlotVisitor<T>

Overrides:

visit in class SlotVisitorBase<T>

Parameters:

slot - The slot that is being visited.

object - The object to which the slot is attached.

value - The value of the slot.

visit

public void visit(StringSlot<T> slot,
                  T object,
                  List<String> values)

Description copied from interface: ISlotVisitor

Visits a multi-valued string-typed slot.

Specified by:

visit in interface ISlotVisitor<T>

Overrides:

visit in class SlotVisitorBase<T>

Parameters:

slot - The slot that is being visited.

object - The object to which the slot is attached.

values - The values of the slot.