1 files changed, 77 insertions, 0 deletions
diff --git a/base/server/cmscore/src/com/netscape/cmscore/dbs/Database.java b/base/server/cmscore/src/com/netscape/cmscore/dbs/Database.java
new file mode 100644
index 000000000..3df2d5919
--- /dev/null
+++ b/base/server/cmscore/src/com/netscape/cmscore/dbs/Database.java
@@ -0,0 +1,77 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2013 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+
+package com.netscape.cmscore.dbs;
+
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import com.netscape.certsrv.apps.CMS;
+
+/**
+ * This class implements in-memory database.
+ *
+ * @author Endi S. Dewata
+ */
+public class Database<E> {
+
+    public final static int DEFAULT_SIZE = 20;
+
+    public String name;
+
+    public Map<String, E> records = new LinkedHashMap<String, E>();
+
+    public Database(String name) {
+        this.name = name;
+
+        CMS.debug("Initializing " + name + " database");
+    }
+
+    public Collection<E> getRecords() throws Exception {
+        return records.values();
+    }
+
+    public E getRecord(String id) throws Exception {
+        if (!records.containsKey(id)) {
+            throw new Exception(name + " " + id + " does not exist.");
+        }
+        return records.get(id);
+    }
+
+    public void addRecord(String id, E record) throws Exception {
+        if (records.containsKey(id)) {
+            throw new Exception(name + " " + id + " already exists.");
+        }
+        records.put(id, record);
+    }
+
+    public void updateRecord(String id, E record) throws Exception {
+        if (!records.containsKey(id)) {
+            throw new Exception(name + " " + id + " does not exist.");
+        }
+        records.put(id, record);
+    }
+
+    public void removeRecord(String id) throws Exception {
+        if (!records.containsKey(id)) {
+            throw new Exception(name + " " + id + " does not exist.");
+        }
+        records.remove(id);
+    }
+}