[isis] branch master updated: ISIS-1841: reworks _Multimaps to use lambdas, avoid compiler type inference issue with JDK's javac

[da...@apache.org]

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danhaywood pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/isis.git


The following commit(s) were added to refs/heads/master by this push:
     new 6ecf347  ISIS-1841: reworks _Multimaps to use lambdas, avoid compiler type inference issue with JDK's javac
6ecf347 is described below

commit 6ecf347128e82099cc295d8a9d5c5e3c43bf6a72
Author: Dan Haywood <da...@haywood-associates.co.uk>
AuthorDate: Sun Mar 4 10:54:15 2018 +0000

    ISIS-1841: reworks _Multimaps to use lambdas, avoid compiler type inference issue with JDK's javac
---
 .../org/apache/isis/applib/internal/collections/_Multimaps.java     | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/core/applib/src/main/java/org/apache/isis/applib/internal/collections/_Multimaps.java b/core/applib/src/main/java/org/apache/isis/applib/internal/collections/_Multimaps.java
index 02493fc..3de53ec 100644
--- a/core/applib/src/main/java/org/apache/isis/applib/internal/collections/_Multimaps.java
+++ b/core/applib/src/main/java/org/apache/isis/applib/internal/collections/_Multimaps.java
@@ -207,21 +207,21 @@ public class _Multimaps {
 	 * @return HashMap of ArrayLists
 	 */
 	public static <K, V> ListMultimap<K, V> newListMultimap(){ 
-		return newListMultimap(HashMap::new, ArrayList::new); 
+		return newListMultimap(() -> new HashMap<K, List<V>>(), () -> new ArrayList<V>());
 	}
 	
 	/**
 	 * @return HashMap of HashSets
 	 */
 	public static <K, V> SetMultimap<K, V> newSetMultimap(){ 
-		return newSetMultimap(HashMap::new, HashSet::new); 
+		return newSetMultimap(() -> new HashMap<K, Set<V>>(), () -> new HashSet<V>());
 	}
 
 	/**
 	 * @return HashMap of HashMaps
 	 */
 	public static <K1, K2, V> MapMultimap<K1, K2, V> newMapMultimap(){ 
-		return newMapMultimap(HashMap::new, HashMap::new); 
+		return newMapMultimap(() -> new HashMap<K1, Map<K2, V>>(), () -> new HashMap<K2, V>());
 	}
 
 	

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