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[OmniFaces Utilities] - Find the right JSF OmniFaces 2 utilities methods/functions

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Petition by Java EE Guardians


joi, 7 mai 2015

[OmniFaces utilities 2.0] Get a new map that contains the reverse of the given map

[OmniFaces utilities] The reverse() method returns a new map that contains the reverse of the given map. The reverse of a map means that every value X becomes a key X' with as corresponding value Y' the key Y that was originally associated with the value X.


Map<String,String> abcde = new HashMap<>();

import org.omnifaces.util.Utils;
Map<String, String> reversed = Utils.reverse(abcde);

Before reversing:
Key : four Value : D
Key : one Value : A
Key : two Value : B
Key : three Value : C
Key : five Value : E

After (reversed):
Key : A Value : one
Key : B Value : two
Key : C Value : three
Key : D Value : four
Key : E Value : five

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