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Given one collection, split it into several subsets based on either a Function or a Function based on a Predicate.
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| // partition a collection of properties into the two sets | |
| // of those that satisfy a predicate and those that do not | |
| final ImmutableListMultimap<Boolean, Entry<String, Object>> propertiesPair = | |
| Multimaps.index(domainModelDTO.getProperties().entrySet(), | |
| Functions.forPredicate(predicateMethod())); | |
| final FluentIterable<Entry<String, Object>> truePropertiesList = | |
| FluentIterable.from( propertiesPair.get( true ) ); | |
| final FluentIterable<Entry<String, Object>> falsePropertiesList = | |
| FluentIterable.from( propertiesPair.get( false ) ); | |
| // more than two subsets can be obtained by using a key-generating Function<V, K> instead | |
| // of this simple Boolean-generating Predicate funtion | |
| // The separate FluentIterables can be turned into their own Maps with | |
| // Map<String, Object> map = ImmutableMaps.copyOf( truePropertiesList ) |
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