[cvs] expresso commit by lhamel: add convenience for getting dbname from

[JCorporate Ltd]

Log Message:
-----------
add convenience for getting dbname from RequestRegistry

Modified Files:
--------------
    expresso/expresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj:
        Setup.java

Revision Data
-------------
Index: Setup.java
===================================================================
RCS file: /home/javacorp/.cvs/expresso/expresso/expresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj/Setup.java,v
retrieving revision 1.29
retrieving revision 1.30
diff -Lexpresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj/Setup.java -Lexpresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj/Setup.java -u -r1.29 -r1.30
--- expresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj/Setup.java
+++ expresso-web/WEB-INF/src/com/jcorporate/expresso/services/dbobj/Setup.java
@@ -77,6 +77,7 @@
 import com.jcorporate.expresso.core.misc.ConfigManager;
 import com.jcorporate.expresso.core.misc.ConfigurationException;
 import com.jcorporate.expresso.core.misc.StringUtil;
+import com.jcorporate.expresso.core.registry.RequestRegistry;
 import org.apache.log4j.Logger;
 
 import java.util.Enumeration;
@@ -223,12 +224,43 @@
                 log.debug("No setup info yet for db " + dbName);
             }
 
-            return "";
+            return ""; // why not return null?
         }
 
         return getValue(dbName, "com.jcorporate.expresso.core.ExpressoSchema",
                 setupCode);
     } /* getValue(String, String) */
+
+
+    /**
+     * Get a config value for the default schema,
+     * using the current db context from RequestRegistry (assumes we are in a
+     * situation where call is happening within a request scope).
+     * Config values are like INI file variables or registry entries - except
+     * stored in a database. There is one database connection held open for
+     * accessing these values from the connection pool.  This function simply
+     * references the Expresso Schema's setup values.  For your own application
+     * you will want to call the getValue that names your Schema
+     *
+     * @param setupCode The code string of the setup code required
+     * @return String value stored in the given config value
+     * @throws DBException If the value cannot be retrieved
+     */
+    public static String getValue(String setupCode)
+            throws DBException {
+
+        String dbName = RequestRegistry.getDataContext();
+        if (tableNotExists.contains(dbName)) {
+            if (log.isDebugEnabled()) {
+                log.debug("No setup info yet for db " + dbName);
+            }
+
+            return ""; // why not return null?
+        }
+
+        return getValue(dbName, "com.jcorporate.expresso.core.ExpressoSchema",
+                setupCode);
+    } /* getValue(String) */
 
 
     /**