Index: lams_common/src/java/org/lamsfoundation/lams/tool/service/ILamsToolService.java
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diff -u
--- lams_common/src/java/org/lamsfoundation/lams/tool/service/ILamsToolService.java	(revision 0)
+++ lams_common/src/java/org/lamsfoundation/lams/tool/service/ILamsToolService.java	(revision 394a12d923ffa10cae69244dd6b8c4b6aa75fa08)
@@ -0,0 +1,45 @@
+/*
+ * LamsToolService.java
+ *
+ * Created on 11 January 2005, 13:49
+ */
+
+package org.lamsfoundation.lams.tool.service;
+
+import java.util.List;
+
+import org.lamsfoundation.lams.learningdesign.Activity;
+import org.lamsfoundation.lams.tool.LamsToolServiceException;
+import org.lamsfoundation.lams.tool.ToolSession;
+import org.lamsfoundation.lams.usermanagement.User;
+/**
+ * Interface defines the services LAMS provides for Tools
+ * @author chris
+ */
+public interface ILamsToolService
+{
+    /**
+     * Returns a list of all learners who can use a specific set of tool content.
+     * Note that none/some/all of these users may not reach the associated activity
+     * so they may not end up using the content.
+     * The purpose of this method is to provide a way for tools to do logic based on 
+     * completions against potential completions.
+     * @param toolContentID a long value that identifies the tool content (in the Tool and in LAMS).
+     * @return a List of all the Learners who are scheduled to use the content.
+     * @exception in case of any problems.
+     */
+    public List getAllPotentialLearners(long toolContentID) throws LamsToolServiceException;
+
+    /**
+     * Creates a ToolSession for a learner and activity.
+     * @param learner
+     * @param activity
+     */
+    public ToolSession createToolSession(User learner, Activity activity);
+    
+    /**
+     * Returns the previously created ToolSession for a learner and activity.
+     */
+    public ToolSession getToolSession(User learner, Activity activity);
+    
+}