svn commit: r948822 - in /incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core: interfaces/DBInterfaceFactory.java system/LCF.java

[kw...@apache.org]

Author: kwright
Date: Thu May 27 13:20:48 2010
New Revision: 948822

URL: http://svn.apache.org/viewvc?rev=948822&view=rev
Log:
Make database implementation be controllable by a configuration parameter.

Modified:
    incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/interfaces/DBInterfaceFactory.java
    incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/system/LCF.java

Modified: incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/interfaces/DBInterfaceFactory.java
URL: http://svn.apache.org/viewvc/incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/interfaces/DBInterfaceFactory.java?rev=948822&r1=948821&r2=948822&view=diff
==============================================================================
--- incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/interfaces/DBInterfaceFactory.java (original)
+++ incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/interfaces/DBInterfaceFactory.java Thu May 27 13:20:48 2010
@@ -18,6 +18,9 @@
 */
 package org.apache.lcf.core.interfaces;
 
+import org.apache.lcf.core.system.LCF;
+import java.lang.reflect.*;
+
 /** This is the factory class for an IDBInterface.
 */
 public class DBInterfaceFactory
@@ -37,10 +40,46 @@ public class DBInterfaceFactory
     Object x = context.get(dbName);
     if (x == null || !(x instanceof IDBInterface))
     {
-      // Create new database handle
-      // x = new org.apache.lcf.core.database.DBInterfaceMySQL(context,databaseName,userName,password);
-      x = new org.apache.lcf.core.database.DBInterfacePostgreSQL(context,databaseName,userName,password);
-      context.save(dbName,x);
+      String implementationClass = LCF.getProperty(LCF.databaseImplementation);
+      if (implementationClass == null)
+        implementationClass = "org.apache.lcf.core.database.DBInterfacePostgreSQL";
+      try
+      {
+        Class c = Class.forName(implementationClass);
+        Constructor constructor = c.getConstructor(new Class[]{IThreadContext.class,String.class,String.class,String.class});
+        x = constructor.newInstance(new Object[]{context,databaseName,userName,password});
+        if (!(x instanceof IDBInterface))
+          throw new LCFException("Database implementation class "+implementationClass+" does not implement IDBInterface",LCFException.SETUP_ERROR);
+        context.save(dbName,x);
+      }
+      catch (ClassNotFoundException e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" could not be found: "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (ExceptionInInitializerError e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" could not be instantiated: "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (LinkageError e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" could not be linked: "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (InstantiationException e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" could not be instantiated: "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (InvocationTargetException e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" could not be instantiated: "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (NoSuchMethodException e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" had no constructor taking (IThreadContext, String, String, String): "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
+      catch (IllegalAccessException e)
+      {
+        throw new LCFException("Database implementation class "+implementationClass+" had no public constructor taking (IThreadContext, String, String, String): "+e.getMessage(),e,LCFException.SETUP_ERROR);
+      }
     }
     return (IDBInterface)x;
 

Modified: incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/system/LCF.java
URL: http://svn.apache.org/viewvc/incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/system/LCF.java?rev=948822&r1=948821&r2=948822&view=diff
==============================================================================
--- incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/system/LCF.java (original)
+++ incubator/lcf/trunk/modules/framework/core/org/apache/lcf/core/system/LCF.java Thu May 27 13:20:48 2010
@@ -86,6 +86,8 @@ public class LCF
   // Implementation class properties
   /** Lock manager implementation class */
   public static final String lockManagerImplementation = "org.apache.lcf.lockmanagerclass";
+  /** Database implementation class */
+  public static final String databaseImplementation = "org.apache.lcf.databaseimplementationclass";
   
   // The following are system integration properties
   /** Script to invoke when configuration changes, if any */