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Bug 367032

Summary:	[Xtend] "map" method cannot be used with EMap
Product:	[Tools] Xtend	Reporter:	Nikolay Kasyanov <corrmage>
Component:	Core	Assignee:	Project Inbox <xtend-inbox>
Status:	CLOSED FIXED	QA Contact:
Severity:	normal
Priority:	P3	CC:	dennis.huebner, sebastian.zarnekow, sven.efftinge
Version:	2.2.0
Target Milestone:	M6
Hardware:	PC
OS:	All
Whiteboard:
Bug Depends on:	376037
Bug Blocks:

Description Nikolay Kasyanov

2011-12-18 08:06:24 EST

Build Identifier: 20110916-0149

EMF's EMap is actually a EList<java.util.Map.Entry<K,V>>, so it's obvious to use map to do something with entries.

But there is compiler error when trying to use map method on EMap instance. Code example:
val l = new BasicEMap<String, String>()
val ll = l.map(e | e.key) // error here

error message: Incompatible receiver type. Expected java.util.List<java.util.Map.Entry<java.lang.String,java.lang.String>> or java.util.Map.Entry<java.lang.String,java.lang.String>[] but was org.eclipse.emf.common.util.BasicEMap<java.lang.String,java.lang.String>

this code works:
val l = new BasicEList<Entry<String, String>>()
val ll = l.map(e | e.key)

Reproducible: Always

Comment 1 Sven Efftinge

2011-12-18 08:17:46 EST

Don't you mean 

val ll = l.entrySet.map( e | e.key )

?

Comment 2 Nikolay Kasyanov

2011-12-18 09:38:04 EST

(In reply to comment #1)
> Don't you mean 
> 
> val ll = l.entrySet.map( e | e.key )
> 
> ?

thanks, this works.
But isn't it strange that "map" can't be used directly with EMap class which implements List interface?

Comment 3 Dennis Huebner

2013-02-14 05:50:28 EST

Works now.

val l = new BasicEMap<String, String>()
val ll = l.map(e | e.key) // No error here

Comment 4 Eclipse Webmaster

2017-10-31 11:05:06 EDT

Requested via bug 522520.

-M.

Comment 5 Eclipse Webmaster

2017-10-31 11:16:28 EDT

Requested via bug 522520.

-M.