class DerivedHashMap - base map + additions [1001027]

20
LINES

< > BotCompany Repo | #1001027 // class DerivedHashMap - base map + additions

JavaX fragment (include)

static class DerivedHashMap<A, B> extends AbstractMap<A, B> {
  Map<A, B> base;
  new HashMap<A, B> additions;
  
  *(Map<A, B> *base) {}
  
  public B get(Object key) {
    B b = additions.get(key);
    if (b != null) return b;
    return base.get(key);
  }
  
  public B put(A key, B value) {
    return additions.put(key, value);
  }
  
  public Set<Map.Entry<A,B>> entrySet() {
    throw fail();
  }
}

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Snippet ID:	#1001027
Snippet name:	class DerivedHashMap - base map + additions
Eternal ID of this version:	#1001027/2
Text MD5:	f62569bb25f5084e80f584b14972080f
Author:	stefan
Category:	javax
Type:	JavaX fragment (include)
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2018-07-22 13:40:21
Source code size:	426 bytes / 20 lines
Pitched / IR pitched:	No / No
Views / Downloads:	889 / 1640
Version history:	1 change(s)
Referenced in:	[show references]

1	static class DerivedHashMap<A, B> extends AbstractMap<A, B> {
2	Map<A, B> base;
3	new HashMap<A, B> additions;
4
5	(Map<A, B> base) {}
6
7	public B get(Object key) {
8	B b = additions.get(key);
9	if (b != null) return b;
10	return base.get(key);
11	}
12
13	public B put(A key, B value) {
14	return additions.put(key, value);
15	}
16
17	public Set<Map.Entry<A,B>> entrySet() {
18	throw fail();
19	}
20	}