1 files changed, 57 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/util/CollectionStore.java b/core/src/main/java/org/spongycastle/util/CollectionStore.java
new file mode 100644
index 00000000..fa4c9fe5
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/util/CollectionStore.java
@@ -0,0 +1,57 @@
+package org.spongycastle.util;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * A simple collection backed store.
+ */
+public class CollectionStore
+    implements Store
+{
+    private Collection _local;
+
+    /**
+     * Basic constructor.
+     *
+     * @param collection - initial contents for the store, this is copied.
+     */
+    public CollectionStore(
+        Collection collection)
+    {
+        _local = new ArrayList(collection);
+    }
+
+    /**
+     * Return the matches in the collection for the passed in selector.
+     *
+     * @param selector the selector to match against.
+     * @return a possibly empty collection of matching objects.
+     */
+    public Collection getMatches(Selector selector)
+    {
+        if (selector == null)
+        {
+            return new ArrayList(_local);
+        }
+        else
+        {
+            List col = new ArrayList();
+            Iterator iter = _local.iterator();
+
+            while (iter.hasNext())
+            {
+                Object obj = iter.next();
+
+                if (selector.match(obj))
+                {
+                    col.add(obj);
+                }
+            }
+
+            return col;
+        }
+    }
+}