com.northconcepts.datapipeline.transform.lookup

Class ProxyLookup

java.lang.Object

com.northconcepts.datapipeline.transform.lookup.Lookup

com.northconcepts.datapipeline.transform.lookup.ProxyLookup

Direct Known Subclasses:

CachedLookup

public class ProxyLookup
extends Lookup

Abstract super-class for obtaining records from another Lookup, possibly transforming them along the way. The only method that a subclass should implement is get(Object...).

Constructor Summary

Constructors

Constructor and Description
ProxyLookup(Lookup nestedLookup)

Method Summary

Modifier and Type	Method and Description
protected void	close()
RecordList	get(Object... args) Returns the records that match the supplied composite lookup key.
Lookup	getNestedLookup()
protected void	open()
ProxyLookup	setNestedLookup(Lookup nestedLookup)

Methods inherited from class com.northconcepts.datapipeline.transform.lookup.Lookup

get

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyLookup

public ProxyLookup(Lookup nestedLookup)

Method Detail

getNestedLookup

public Lookup getNestedLookup()

setNestedLookup

public ProxyLookup setNestedLookup(Lookup nestedLookup)

get

public RecordList get(Object... args)

Description copied from class: Lookup

Returns the records that match the supplied composite lookup key.

Contract for subclasses (see also docs/authoring/Lookup.md):

• Called once per source record by LookupTransformer; keep it fast.
• Return an empty RecordList when no match is found. null is also tolerated by LookupTransformer for backward compatibility, but new code should prefer an empty list for clearer semantics.
• Do not mutate the supplied keys; they are owned by the caller.

Specified by:

get in class Lookup

open

protected void open()

Overrides:

open in class Lookup

close

protected void close()

Overrides:

close in class Lookup