Massive package refactoring

[lgpl/argeo-commons.git] / org.argeo.api.register / src / org / argeo / api / register / ComponentRegister.java

diff --git a/org.argeo.api.register/src/org/argeo/api/register/ComponentRegister.java b/org.argeo.api.register/src/org/argeo/api/register/ComponentRegister.java
new file mode 100644 (file)
index 0000000..1bb9036
--- /dev/null
+++ b/org.argeo.api.register/src/org/argeo/api/register/ComponentRegister.java
@@ -0,0 +1,43 @@
+package org.argeo.api.register;
+
+import java.util.Map;
+import java.util.SortedSet;
+import java.util.function.Predicate;
+
+/** A register of components which can coordinate their activation. */
+public interface ComponentRegister {
+       long register(Component<?> component);
+
+       <T> SortedSet<Component<? extends T>> find(Class<T> clss, Predicate<Map<String, Object>> filter);
+
+       default <T> Component.PublishedType<T> getSingleton(Class<T> type) {
+               SortedSet<Component<? extends T>> found = find(type, null);
+               if (found.size() == 0)
+                       throw new IllegalStateException("No component found for " + type);
+               return found.first().getType(type);
+       }
+
+       default <T> T getObject(Class<T> clss) {
+               SortedSet<Component<? extends T>> found = find(clss, null);
+               if (found.size() == 0)
+                       return null;
+               return found.first().get();
+       }
+
+       Component<?> get(Object instance);
+
+//     default <T> PublishedType<T> getType(Class<T> clss) {
+//             SortedSet<Component<? extends T>> components = find(clss, null);
+//             if (components.size() == 0)
+//                     return null;
+//             return components.first().getType(clss);
+//     }
+
+       void activate();
+
+       void deactivate();
+
+       boolean isActive();
+
+       void clear();
+}