FELIX-2110: The resolver should be able to resolve for some requirements in addition to resources

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@912353 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/org.osgi.service.obr/src/main/java/org/osgi/service/obr/RepositoryAdmin.java b/org.osgi.service.obr/src/main/java/org/osgi/service/obr/RepositoryAdmin.java
index 7468871..29fad00 100644
--- a/org.osgi.service.obr/src/main/java/org/osgi/service/obr/RepositoryAdmin.java
+++ b/org.osgi.service.obr/src/main/java/org/osgi/service/obr/RepositoryAdmin.java
@@ -23,6 +23,9 @@
 
 import java.net.URL;
 
+import org.osgi.framework.Filter;
+import org.osgi.framework.InvalidSyntaxException;
+
 /**
  * Provides centralized access to the distributed repository.
  * 
@@ -75,7 +78,6 @@
     /**
      * Create a resolver.
      * 
-     * @param resource
      * @return
      */
     Resolver resolver();
@@ -100,5 +102,22 @@
      */
     Repository[] listRepositories();
 
-    Resource getResource(String respositoryId);
+    Resource getResource(String repositoryId);
+
+    /**
+     * Create a simple requirement to be used for selection
+     * @param name
+     * @param filter
+     * @return
+     */
+    Requirement requirement(String name, String filter) throws InvalidSyntaxException;
+
+    /**
+     * Create an extender filter supporting the SUBSET, SUPERSET and other extensions
+     *
+     * @param filter the string filter
+     * @return
+     */
+    Filter filter(String filter) throws InvalidSyntaxException;
+
 }
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