From fea9f5836c4a13e2024c2f678061268ab7421b8d Mon Sep 17 00:00:00 2001
From: Andrew Branson <andrew.branson@cern.ch>
Date: Mon, 30 Jul 2012 22:09:32 +0200
Subject: Predefined steps audit, including new steps for collection management
 Fixes #19

---
 .../lifecycle/instance/predefined/ClearSlot.java   | 110 +++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/main/java/com/c2kernel/lifecycle/instance/predefined/ClearSlot.java

(limited to 'src/main/java/com/c2kernel/lifecycle/instance/predefined/ClearSlot.java')

diff --git a/src/main/java/com/c2kernel/lifecycle/instance/predefined/ClearSlot.java b/src/main/java/com/c2kernel/lifecycle/instance/predefined/ClearSlot.java
new file mode 100644
index 0000000..66df3b2
--- /dev/null
+++ b/src/main/java/com/c2kernel/lifecycle/instance/predefined/ClearSlot.java
@@ -0,0 +1,110 @@
+/**************************************************************************
+ * AssignItemToSlot
+ *
+ * $Workfile$
+ * $Revision: 1.8 $
+ * $Date: 2004/10/21 08:02:19 $
+ *
+ * Copyright (C) 2001 CERN - European Organization for Nuclear Research
+ * All rights reserved.
+ **************************************************************************/
+
+package com.c2kernel.lifecycle.instance.predefined;
+
+
+import com.c2kernel.collection.Aggregation;
+import com.c2kernel.collection.AggregationMember;
+import com.c2kernel.common.AccessRightsException;
+import com.c2kernel.common.InvalidDataException;
+import com.c2kernel.common.InvalidTransitionException;
+import com.c2kernel.common.ObjectNotFoundException;
+import com.c2kernel.lookup.AgentPath;
+import com.c2kernel.lookup.EntityPath;
+import com.c2kernel.persistency.ClusterStorage;
+import com.c2kernel.persistency.ClusterStorageException;
+import com.c2kernel.process.Gateway;
+import com.c2kernel.utils.Logger;
+
+/**************************************************************************
+ *
+ * @author $Author: abranson $ $Date: 2004/10/21 08:02:19 $
+ * @version $Revision: 1.8 $
+ **************************************************************************/
+public class ClearSlot extends PredefinedStep
+{
+    /**************************************************************************
+    * Constructor for Castor
+    **************************************************************************/
+    public ClearSlot()
+    {
+        super();
+    }
+
+
+    /**
+     * Params:
+     * 0 - collection name
+     * 1 - slot number
+     */
+    @Override
+	public void request(AgentPath agent, int transitionID, String requestData)
+        throws AccessRightsException,
+               InvalidTransitionException,
+               InvalidDataException
+    {
+        EntityPath entityPath = getItemEntityPath();
+        String collName;
+        int slotNo;
+        Aggregation agg;
+
+        Logger.msg(1, "ClearSlot::request() - Starting.");
+
+        checkAccessRights(agent);
+
+        // extract parameters
+        try {
+            entityPath = getItemEntityPath();
+            String[] params = getDataList(requestData);
+            collName = params[0];
+            slotNo = Integer.parseInt(params[1]);
+        } catch (Exception e) {
+            throw new InvalidDataException("Invalid parameters", "");
+        }
+
+        // load collection
+        try {
+            agg = (Aggregation)Gateway.getStorage().get(entityPath.getSysKey(), ClusterStorage.COLLECTION+"/"+collName, null);
+		} catch (ObjectNotFoundException ex) {
+			throw new InvalidDataException("Collection '"+collName+"' not found in this Item", "");
+		} catch (ClusterStorageException ex) {
+			Logger.error(ex);
+			throw new InvalidDataException("Error loading collection '\"+collName+\"': "+ex.getMessage(), "");
+		}
+
+        // find member and clear
+        boolean stored = false;
+        for (AggregationMember member : agg.getMembers().list) {
+            if (member.getID() == slotNo) {
+                if (member.getEntityKey() > -1)
+                    throw new InvalidDataException("Member slot already empty", "");
+                member.clearEntity();
+                stored = true;
+                break;
+            }
+        }
+        if (!stored) {
+            throw new InvalidDataException("Member slot "+slotNo+" not found.", "");
+        }
+
+
+		try {
+            Gateway.getStorage().put(entityPath.getSysKey(), agg, null);
+        } catch (ClusterStorageException e) {
+            Logger.error(e);
+            throw new InvalidDataException("Error storing collection", "");
+        }
+		sendEventStoreOutcome(transitionID, requestData, agent);
+
+        Logger.msg(1, "ClearSlot::request() - DONE.");
+    }
+}
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