svn commit: r473396 - /db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java

[dj...@apache.org]

Author: djd
Date: Fri Nov 10 09:36:57 2006
New Revision: 473396

URL: http://svn.apache.org/viewvc?view=rev&rev=473396
Log:
Add some comments to ConstantActionActivation to inform how the activation gets
hooked up to the ConstantAction.

Modified:
    db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java

Modified: db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java
URL: http://svn.apache.org/viewvc/db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java?view=diff&rev=473396&r1=473395&r2=473396
==============================================================================
--- db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java (original)
+++ db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/execute/ConstantActionActivation.java Fri Nov 10 09:36:57 2006
@@ -31,6 +31,13 @@
 	A pre-compiled activation that supports a single ResultSet with
 	a single constant action. All the execution logic is contained
 	in the constant action.
+    <P>
+    At compile time for DDL statements this class will be picked
+    as the implementation of Activation. The language PreparedStatement
+    will contain the ConstantAction created at compiled time.
+    At execute time this class then fetches a language ResultSet using
+    ResultSetFactory.getDDLResultSet and executing the ResultSet
+    will invoke the execute on the ConstantAction.
 
  */
 public final class ConstantActionActivation extends BaseActivation