Example usage for com.google.common.collect SortedSetMultimap keys

Introduction

In this page you can find the example usage for com.google.common.collect SortedSetMultimap keys.

Prototype

Multiset<K> keys();

Source Link

Document

Returns a view collection containing the key from each key-value pair in this multimap, without collapsing duplicates.

Usage

From source file:org.eclipse.ziggurat.inject.BindingManager.java

@SuppressWarnings("unchecked")
public static void registerBindings() {
    Map<Class, Collection<PriorityClass>> map = new HashMap<Class, Collection<PriorityClass>>();
    Supplier<SortedSet<PriorityClass>> factory = new Supplier<SortedSet<PriorityClass>>() {

        @Override//from w  w  w  .j  a  v a  2s .  c o  m
        public SortedSet<PriorityClass> get() {
            SortedSet<PriorityClass> sorted = new TreeSet<PriorityClass>(new Comparator<PriorityClass>() {
                @Override
                public int compare(PriorityClass o1, PriorityClass o2) {
                    int result = new Integer(o1.priority).compareTo(o2.priority);
                    if (result == 0 && !o1.equals(o2)) {
                        result = -1;
                    }
                    return result;
                }
            });
            return sorted;
        }
    };
    SortedSetMultimap<Class, PriorityClass> multi = Multimaps.newSortedSetMultimap(map, factory);
    IConfigurationElement[] elements = Platform.getExtensionRegistry()
            .getConfigurationElementsFor(ZigguratInject.PLUGIN_ID, EXT_POINT);
    for (IConfigurationElement e : elements) {
        String theInterface = e.getAttribute("interface");
        String theImpl = e.getAttribute("impl");
        String name = e.getAttribute("name");
        Class theInterfaceC = loadClass(e, theInterface);
        Class theImplC = loadClass(e, theImpl);
        int priority = 0;
        String prio = e.getAttribute("priority");
        if (prio != null && prio.length() > 0) {
            try {
                priority = Integer.parseInt(prio);
            } catch (NumberFormatException ex) {
            }
        }
        if (theInterfaceC != null && theImplC != null && theInterfaceC.isAssignableFrom(theImplC)) {
            PriorityClass priorityClass = new PriorityClass();
            priorityClass.aClass = theImplC;
            priorityClass.priority = priority;
            priorityClass.name = name;
            multi.put(theInterfaceC, priorityClass);
        }
    }
    for (Class c : multi.keys()) {
        PriorityClass last = null;
        // for each priority class if name is present a binding is created with the given name
        for (PriorityClass pc : multi.get(c)) {
            if (pc.name != null && pc.name.length() > 0) {
                InjectorFactory.getDefault().addBinding(c).implementedBy(pc.aClass).named(pc.name);
            }
            last = pc;
        }
        if (last != null) {
            // the binding by default is made by a class with no name
            InjectorFactory.getDefault().addBinding(c).implementedBy(last.aClass);
        }
    }

}

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