1. Added basic priority support for extensions. 2. Factor out the discovery of model class and instantiation of model po as extension.

org.adempiere.base/plugin.xml

@@ -9,5 +9,15 @@
    <extension-point id="org.compiere.db.AdempiereDatabase" name="Adempiere Database Interface" schema="schema/org.compiere.db.AdempiereDatabase.exsd"/>
    <extension-point id="org.compiere.interfaces.Server" name="Server Interface" schema="schema/org.compiere.interfaces.Server.exsd"/>
    <extension-point id="org.compiere.interfaces.Status" name="Status interface" schema="schema/org.compiere.interfaces.Status.exsd"/>
+   <extension-point id="org.adempiere.base.IModelFactory" name="Model Factory" schema="schema/org.adempiere.base.IModelFactory.exsd"/>
+   <extension
+         id="org.adempiere.base.DefaultModelFactory"
+         name="Default model factory"
+         point="org.adempiere.base.IModelFactory">
+      <factory
+            class="org.adempiere.base.DefaultModelFactory"
+            priority="0">
+      </factory>
+   </extension>
 
 </plugin>

org.adempiere.base/schema/org.adempiere.base.IModelFactory.exsd

@@ -0,0 +1,109 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!-- Schema file written by PDE -->
+<schema targetNamespace="org.adempiere.base" xmlns="http://www.w3.org/2001/XMLSchema">
+<annotation>
+      <appinfo>
+         <meta.schema plugin="org.adempiere.base" id="org.adempiere.base.IModelFactory" name="Model Factory"/>
+      </appinfo>
+      <documentation>
+         [Enter description of this extension point.]
+      </documentation>
+   </annotation>
+
+   <element name="extension">
+      <annotation>
+         <appinfo>
+            <meta.element />
+         </appinfo>
+      </annotation>
+      <complexType>
+         <choice>
+            <element ref="factory"/>
+         </choice>
+         <attribute name="point" type="string" use="required">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="id" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="name" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+               <appinfo>
+                  <meta.attribute translatable="true"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <element name="factory">
+      <complexType>
+         <attribute name="priority" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="class" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+               <appinfo>
+                  <meta.attribute kind="java" basedOn=":org.adempiere.base.IModelFactory"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="since"/>
+      </appinfo>
+      <documentation>
+         [Enter the first release in which this extension point appears.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="examples"/>
+      </appinfo>
+      <documentation>
+         [Enter extension point usage example here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="apiinfo"/>
+      </appinfo>
+      <documentation>
+         [Enter API information here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="implementation"/>
+      </appinfo>
+      <documentation>
+         [Enter information about supplied implementation of this extension point.]
+      </documentation>
+   </annotation>
+
+
+</schema>

org.adempiere.base/src/org/adempiere/base/DefaultModelFactory.java

@@ -0,0 +1,325 @@
+/******************************************************************************
+ * Product: Adempiere ERP & CRM Smart Business Solution                       *
+ * Copyright (C) 1999-2006 ComPiere, Inc. All Rights Reserved.                *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program is distributed in the hope   *
+ * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
+ * See the GNU General Public License for more details.                       *
+ * You should have received a copy of the GNU General Public License along    *
+ * with this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ * For the text or an alternative of this public license, you may reach us    *
+ * ComPiere, Inc., 2620 Augustine Dr. #245, Santa Clara, CA 95054, USA        *
+ * or via info@compiere.org or http://www.compiere.org/license.html           *
+ * Contributor(s): Carlos Ruiz - globalqss                                    *
+ *****************************************************************************/
+package org.adempiere.base;
+
+import java.lang.reflect.Constructor;
+import java.sql.ResultSet;
+import java.util.Properties;
+import java.util.logging.Level;
+
+import org.compiere.model.MEntityType;
+import org.compiere.model.MTable;
+import org.compiere.model.PO;
+import org.compiere.util.CCache;
+import org.compiere.util.CLogger;
+import org.compiere.util.Env;
+import org.compiere.util.Util;
+
+/**
+ * Default model factory implementation base on legacy code in MTable.
+ * @author Jorg Janke
+ * @author hengsin
+ */
+public class DefaultModelFactory implements IModelFactory {
+
+	private static CCache<String,Class<?>> s_classCache = new CCache<String,Class<?>>("PO_Class", 20);
+	private final static CLogger s_log = CLogger.getCLogger(DefaultModelFactory.class);
+
+	/**	Packages for Model Classes	*/
+	private static final String[]	s_packages = new String[] {
+
+		"org.compiere.model", "org.compiere.wf",
+		"org.compiere.print", "org.compiere.impexp",
+		"compiere.model",			//	globalqss allow compatibility with other plugins
+		"adempiere.model",			//	Extensions
+		"org.adempiere.model"
+	};
+
+	/**	Special Classes				*/
+	private static final String[]	s_special = new String[] {
+		"AD_Element", "org.compiere.model.M_Element",
+		"AD_Registration", "org.compiere.model.M_Registration",
+		"AD_Tree", "org.compiere.model.MTree_Base",
+		"R_Category", "org.compiere.model.MRequestCategory",
+		"GL_Category", "org.compiere.model.MGLCategory",
+		"K_Category", "org.compiere.model.MKCategory",
+		"C_ValidCombination", "org.compiere.model.MAccount",
+		"C_Phase", "org.compiere.model.MProjectTypePhase",
+		"C_Task", "org.compiere.model.MProjectTypeTask"
+	//	AD_Attribute_Value, AD_TreeNode
+	};
+
+	/* (non-Javadoc)
+	 * @see org.adempiere.base.IModelFactory#getClass(java.lang.String)
+	 */
+	@Override
+	public Class<?> getClass(String tableName) {
+//		Not supported
+		if (tableName == null || tableName.endsWith("_Trl"))
+			return null;
+
+		//check cache
+		Class<?> cache = s_classCache.get(tableName);
+		if (cache != null)
+		{
+			//Object.class indicate no generated PO class for tableName
+			if (cache.equals(Object.class))
+				return null;
+			else
+				return cache;
+		}
+
+		MTable table = MTable.get(Env.getCtx(), tableName);
+		String entityType = table.getEntityType();
+
+		//	Import Tables (Name conflict)
+		//  Import Tables doesn't manage model M classes, just X_
+		if (tableName.startsWith("I_"))
+		{
+			MEntityType et = MEntityType.get(Env.getCtx(), entityType);
+			String etmodelpackage = et.getModelPackage();
+			if (etmodelpackage == null || MEntityType.ENTITYTYPE_Dictionary.equals(entityType))
+				etmodelpackage = "org.compiere.model"; // fallback for dictionary or empty model package on entity type
+			Class<?> clazz = getPOclass(etmodelpackage + ".X_" + tableName, tableName);
+			if (clazz != null)
+			{
+				s_classCache.put(tableName, clazz);
+				return clazz;
+			}
+			s_log.warning("No class for table: " + tableName);
+			return null;
+		}
+
+		//	Special Naming
+		for (int i = 0; i < s_special.length; i++)
+		{
+			if (s_special[i++].equals(tableName))
+			{
+				Class<?> clazz = getPOclass(s_special[i], tableName);
+				if (clazz != null)
+				{
+					s_classCache.put(tableName, clazz);
+					return clazz;
+				}
+				break;
+			}
+		}
+
+		//begin [ 1784588 ] Use ModelPackage of EntityType to Find Model Class - vpj-cd
+		if (!MEntityType.ENTITYTYPE_Dictionary.equals(entityType))
+		{
+			MEntityType et = MEntityType.get(Env.getCtx(), entityType);
+			String etmodelpackage = et.getModelPackage();
+			if (etmodelpackage != null)
+			{
+				Class<?> clazz = null;
+				clazz = getPOclass(etmodelpackage + ".M" + Util.replace(tableName, "_", ""), tableName);
+				if (clazz != null) {
+					s_classCache.put(tableName, clazz);
+					return clazz;
+				}
+				clazz = getPOclass(etmodelpackage + ".X_" + tableName, tableName);
+				if (clazz != null) {
+					s_classCache.put(tableName, clazz);
+					return clazz;
+				}
+				s_log.warning("No class for table with it entity: " + tableName);
+			}
+		}
+		//end [ 1784588 ]
+
+		//	Strip table name prefix (e.g. AD_) Customizations are 3/4
+		String className = tableName;
+		int index = className.indexOf('_');
+		if (index > 0)
+		{
+			if (index < 3)		//	AD_, A_
+				 className = className.substring(index+1);
+			/* DELETEME: this part is useless - teo_sarca, [ 1648850 ]
+			else
+			{
+				String prefix = className.substring(0,index);
+				if (prefix.equals("Fact"))		//	keep custom prefix
+					className = className.substring(index+1);
+			}
+			*/
+		}
+		//	Remove underlines
+		className = Util.replace(className, "_", "");
+
+		//	Search packages
+		for (int i = 0; i < s_packages.length; i++)
+		{
+			StringBuffer name = new StringBuffer(s_packages[i]).append(".M").append(className);
+			Class<?> clazz = getPOclass(name.toString(), tableName);
+			if (clazz != null)
+			{
+				s_classCache.put(tableName, clazz);
+				return clazz;
+			}
+		}
+
+
+		//	Adempiere Extension
+		Class<?> clazz = getPOclass("adempiere.model.X_" + tableName, tableName);
+		if (clazz != null)
+		{
+			s_classCache.put(tableName, clazz);
+			return clazz;
+		}
+
+		//hengsin - allow compatibility with compiere plugins
+		//Compiere Extension
+		clazz = getPOclass("compiere.model.X_" + tableName, tableName);
+		if (clazz != null)
+		{
+			s_classCache.put(tableName, clazz);
+			return clazz;
+		}
+
+		//	Default
+		clazz = getPOclass("org.compiere.model.X_" + tableName, tableName);
+		if (clazz != null)
+		{
+			s_classCache.put(tableName, clazz);
+			return clazz;
+		}
+
+		//Object.class to indicate no PO class for tableName
+		s_classCache.put(tableName, Object.class);
+		return null;
+	}
+
+	/**
+	 * Get PO class
+	 * @param className fully qualified class name
+	 * @param tableName Optional. If specified, the loaded class will be validated for that table name
+	 * @return class or null
+	 */
+	private Class<?> getPOclass (String className, String tableName)
+	{
+		try
+		{
+			Class<?> clazz = Class.forName(className);
+			// Validate if the class is for specified tableName
+			if (tableName != null)
+			{
+				String classTableName = clazz.getField("Table_Name").get(null).toString();
+				if (!tableName.equals(classTableName))
+				{
+					s_log.finest("Invalid class for table: " + className+" (tableName="+tableName+", classTableName="+classTableName+")");
+					return null;
+				}
+			}
+			//	Make sure that it is a PO class
+			Class<?> superClazz = clazz.getSuperclass();
+			while (superClazz != null)
+			{
+				if (superClazz == PO.class)
+				{
+					s_log.fine("Use: " + className);
+					return clazz;
+				}
+				superClazz = superClazz.getSuperclass();
+			}
+		}
+		catch (Exception e)
+		{
+		}
+		s_log.finest("Not found: " + className);
+		return null;
+	}	//	getPOclass
+
+	@Override
+	public PO getPO(String tableName, int Record_ID, String trxName) {
+		Class<?> clazz = getClass(tableName);
+		if (clazz == null)
+		{
+			return null;
+		}
+
+		boolean errorLogged = false;
+		try
+		{
+			Constructor<?> constructor = null;
+			try
+			{
+				constructor = clazz.getDeclaredConstructor(new Class[]{Properties.class, int.class, String.class});
+			}
+			catch (Exception e)
+			{
+				String msg = e.getMessage();
+				if (msg == null)
+					msg = e.toString();
+				s_log.warning("No transaction Constructor for " + clazz + " (" + msg + ")");
+			}
+
+			PO po = (PO)constructor.newInstance(new Object[] {Env.getCtx(), new Integer(Record_ID), trxName});
+			return po;
+		}
+		catch (Exception e)
+		{
+			if (e.getCause() != null)
+			{
+				Throwable t = e.getCause();
+				s_log.log(Level.SEVERE, "(id) - Table=" + tableName + ",Class=" + clazz, t);
+				errorLogged = true;
+				if (t instanceof Exception)
+					s_log.saveError("Error", (Exception)e.getCause());
+				else
+					s_log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
+			}
+			else
+			{
+				s_log.log(Level.SEVERE, "(id) - Table=" + tableName + ",Class=" + clazz, e);
+				errorLogged = true;
+				s_log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
+			}
+		}
+		if (!errorLogged)
+			s_log.log(Level.SEVERE, "(id) - Not found - Table=" + tableName
+				+ ", Record_ID=" + Record_ID);
+		return null;
+	}
+
+	@Override
+	public PO getPO(String tableName, ResultSet rs, String trxName) {
+		Class<?> clazz = getClass(tableName);
+		if (clazz == null)
+		{
+			return null;
+		}
+
+		boolean errorLogged = false;
+		try
+		{
+			Constructor<?> constructor = clazz.getDeclaredConstructor(new Class[]{Properties.class, ResultSet.class, String.class});
+			PO po = (PO)constructor.newInstance(new Object[] {Env.getCtx(), rs, trxName});
+			return po;
+		}
+		catch (Exception e)
+		{
+			s_log.log(Level.SEVERE, "(rs) - Table=" + tableName + ",Class=" + clazz, e);
+			errorLogged = true;
+			s_log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
+		}
+		if (!errorLogged)
+			s_log.log(Level.SEVERE, "(rs) - Not found - Table=" + tableName);
+		return null;
+	}
+}

org.adempiere.base/src/org/adempiere/base/IModelFactory.java

@@ -0,0 +1,49 @@
+/******************************************************************************
+ * Product: Adempiere ERP & CRM Smart Business Solution                       *
+ * Copyright (C) 2010 Heng Sin Low                							  *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program is distributed in the hope   *
+ * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
+ * See the GNU General Public License for more details.                       *
+ * You should have received a copy of the GNU General Public License along    *
+ * with this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ *****************************************************************************/
+package org.adempiere.base;
+
+import java.sql.ResultSet;
+
+import org.compiere.model.PO;
+
+/**
+ * Model factory interface, extracted from legacy code in MTable.
+ * @author hengsin
+ */
+public interface IModelFactory {
+	/**
+	 * 	Get Persistence Class for Table
+	 *	@param tableName table name
+	 *	@return class or null
+	 */
+	public Class<?> getClass (String tableName);
+
+	/**************************************************************************
+	 * 	Get PO Class Instance
+	 *  @param tableName
+	 *	@param Record_ID record
+	 *	@param trxName
+	 *	@return PO for Record or null
+	 */
+	public PO getPO (String tableName, int Record_ID, String trxName);
+
+	/**
+	 * 	Get PO Class Instance
+	 *  @param tableName
+	 *	@param rs result set
+	 *	@param trxName transaction
+	 *	@return PO for Record or null
+	 */
+	public PO getPO (String tableName, ResultSet rs, String trxName);
+}

org.adempiere.base/src/org/adempiere/base/equinox/ExtensionPriorityManager.java

@@ -0,0 +1,86 @@
+/******************************************************************************
+ * Product: Adempiere ERP & CRM Smart Business Solution                       *
+ * Copyright (C) 2010 Heng Sin Low                							  *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program is distributed in the hope   *
+ * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
+ * See the GNU General Public License for more details.                       *
+ * You should have received a copy of the GNU General Public License along    *
+ * with this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ *****************************************************************************/
+package org.adempiere.base.equinox;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.osgi.service.datalocation.Location;
+
+/**
+ *
+ * @author hengsin
+ *
+ */
+public class ExtensionPriorityManager {
+	private Properties priorityMap = new Properties();
+
+	private static final ExtensionPriorityManager instance = new ExtensionPriorityManager();
+
+	private ExtensionPriorityManager() {
+		Location location = Platform.getInstanceLocation();
+		URL url = location.getURL();
+		File file = new File(url.getPath(), "extensions-priorty.properties");
+		if (file.exists() && file.canRead()) {
+			try {
+				priorityMap.load(new FileInputStream(file));
+			} catch (FileNotFoundException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			} catch (IOException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/**
+	 * @param element
+	 * @return priority of extension
+	 */
+	public int getPriority(IConfigurationElement element) {
+		int priority = 0;
+		String id = element.getDeclaringExtension().getUniqueIdentifier();
+		if (id != null) {
+			String p = priorityMap.getProperty(id);
+			if (p != null) {
+				try {
+					priority = Integer.parseInt(p);
+					return priority;
+				} catch (NumberFormatException e) {}
+			}
+		}
+		String p = element.getAttribute("priority");
+		if (p != null) {
+			try {
+				priority = Integer.parseInt(p);
+				return priority;
+			} catch (NumberFormatException e) {}
+		}
+		return priority;
+	}
+
+	/**
+	 * @return ExtensionPriorityManager singleton instance
+	 */
+	public static ExtensionPriorityManager getInstance() {
+		return instance;
+	}
+}

org.adempiere.base/src/org/compiere/model/MTable.java

@@ -17,20 +17,20 @@
  *****************************************************************************/
 package org.compiere.model;
 
-import java.lang.reflect.Constructor;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Properties;
 import java.util.logging.Level;
 
+import org.adempiere.base.IModelFactory;
+import org.adempiere.base.Service;
 import org.adempiere.model.GenericPO;
 import org.compiere.util.CCache;
 import org.compiere.util.CLogger;
 import org.compiere.util.DB;
-import org.compiere.util.Env;
-import org.compiere.util.Util;
 
 /**
  *	Persistent Table Model
@@ -151,34 +151,11 @@ public class MTable extends X_AD_Table
 
 	/**	Cache						*/
 	private static CCache<Integer,MTable> s_cache = new CCache<Integer,MTable>("AD_Table", 20);
-	private static CCache<String,Class<?>> s_classCache = new CCache<String,Class<?>>("PO_Class", 20);
 
 	/**	Static Logger	*/
 	private static CLogger	s_log	= CLogger.getCLogger (MTable.class);
 
-	/**	Packages for Model Classes	*/
-	private static final String[]	s_packages = new String[] {
 
-		"org.compiere.model", "org.compiere.wf", 
-		"org.compiere.print", "org.compiere.impexp",
-		"compiere.model",			//	globalqss allow compatibility with other plugins 	
-		"adempiere.model",			//	Extensions
-		"org.adempiere.model"
-	};
-	
-	/**	Special Classes				*/
-	private static final String[]	s_special = new String[] {
-		"AD_Element", "org.compiere.model.M_Element",
-		"AD_Registration", "org.compiere.model.M_Registration",
-		"AD_Tree", "org.compiere.model.MTree_Base",
-		"R_Category", "org.compiere.model.MRequestCategory",
-		"GL_Category", "org.compiere.model.MGLCategory",
-		"K_Category", "org.compiere.model.MKCategory",
-		"C_ValidCombination", "org.compiere.model.MAccount",
-		"C_Phase", "org.compiere.model.MProjectTypePhase",
-		"C_Task", "org.compiere.model.MProjectTypeTask"
-	//	AD_Attribute_Value, AD_TreeNode
-	};
 
 	/**
 	 * 	Get Persistence Class for Table
@@ -187,194 +164,17 @@ public class MTable extends X_AD_Table
 	 */
 	public static Class<?> getClass (String tableName)
 	{
-		//	Not supported
+		List<IModelFactory> factoryList = Service.list(IModelFactory.class);
-		if (tableName == null || tableName.endsWith("_Trl"))
+		if (factoryList == null)
 			return null;
-		
+		for(IModelFactory factory : factoryList) {
-		//check cache
+			Class<?> clazz = factory.getClass(tableName);
-		Class<?> cache = s_classCache.get(tableName);
-		if (cache != null) 
-		{
-			//Object.class indicate no generated PO class for tableName
-			if (cache.equals(Object.class))
-				return null;
-			else
-				return cache;
-		}
-
-		MTable table = MTable.get(Env.getCtx(), tableName);
-		String entityType = table.getEntityType();
-		
-		//	Import Tables (Name conflict)
-		//  Import Tables doesn't manage model M classes, just X_
-		if (tableName.startsWith("I_"))
-		{
-			MEntityType et = MEntityType.get(Env.getCtx(), entityType);
-			String etmodelpackage = et.getModelPackage();
-			if (etmodelpackage == null || MEntityType.ENTITYTYPE_Dictionary.equals(entityType))
-				etmodelpackage = "org.compiere.model"; // fallback for dictionary or empty model package on entity type
-			Class<?> clazz = getPOclass(etmodelpackage + ".X_" + tableName, tableName);
 			if (clazz != null)
-			{
-				s_classCache.put(tableName, clazz);
 				return clazz;
 		}
-			s_log.warning("No class for table: " + tableName);
-			return null;
-		}
-		
-		//	Special Naming
-		for (int i = 0; i < s_special.length; i++)
-		{
-			if (s_special[i++].equals(tableName))
-			{
-				Class<?> clazz = getPOclass(s_special[i], tableName);
-				if (clazz != null)
-				{
-					s_classCache.put(tableName, clazz);
-					return clazz;
-				}
-				break;
-			}
-		}
-		
-		//begin [ 1784588 ] Use ModelPackage of EntityType to Find Model Class - vpj-cd
-		if (!MEntityType.ENTITYTYPE_Dictionary.equals(entityType))
-		{
-			MEntityType et = MEntityType.get(Env.getCtx(), entityType);
-			String etmodelpackage = et.getModelPackage();
-			if (etmodelpackage != null)
-			{						
-				Class<?> clazz = null;
-				clazz = getPOclass(etmodelpackage + ".M" + Util.replace(tableName, "_", ""), tableName);
-				if (clazz != null) {
-					s_classCache.put(tableName, clazz);
-					return clazz;
-				}
-				clazz = getPOclass(etmodelpackage + ".X_" + tableName, tableName);
-				if (clazz != null) {
-					s_classCache.put(tableName, clazz);
-					return clazz;
-				}
-				s_log.warning("No class for table with it entity: " + tableName);					
-			}
-		}	
-		//end [ 1784588 ] 
-
-		//	Strip table name prefix (e.g. AD_) Customizations are 3/4
-		String className = tableName;
-		int index = className.indexOf('_');
-		if (index > 0)
-		{
-			if (index < 3)		//	AD_, A_
-				 className = className.substring(index+1);
-			/* DELETEME: this part is useless - teo_sarca, [ 1648850 ]
-			else
-			{
-				String prefix = className.substring(0,index);
-				if (prefix.equals("Fact"))		//	keep custom prefix
-					className = className.substring(index+1);
-			}
-			*/
-		}
-		//	Remove underlines
-		className = Util.replace(className, "_", "");
-	
-		//	Search packages
-		for (int i = 0; i < s_packages.length; i++)
-		{
-			StringBuffer name = new StringBuffer(s_packages[i]).append(".M").append(className);
-			Class<?> clazz = getPOclass(name.toString(), tableName);
-			if (clazz != null)
-			{
-				s_classCache.put(tableName, clazz);
-				return clazz;
-			}
-		}
-		
-		
-		//	Adempiere Extension
-		Class<?> clazz = getPOclass("adempiere.model.X_" + tableName, tableName);
-		if (clazz != null)
-		{
-			s_classCache.put(tableName, clazz);
-			return clazz;
-		}
-		
-		//hengsin - allow compatibility with compiere plugins
-		//Compiere Extension
-		clazz = getPOclass("compiere.model.X_" + tableName, tableName);
-		if (clazz != null)
-		{
-			s_classCache.put(tableName, clazz);
-			return clazz;
-		}
-
-		//	Default
-		clazz = getPOclass("org.compiere.model.X_" + tableName, tableName);
-		if (clazz != null)
-		{
-			s_classCache.put(tableName, clazz);
-			return clazz;
-		}
-
-		//Object.class to indicate no PO class for tableName
-		s_classCache.put(tableName, Object.class);
 		return null;
 	}	//	getClass
 
-	/**
-	 * Get PO class
-	 * @param className fully qualified class name
-	 * @return class or null
-	 * @deprecated Use {@link #getPOclass(String, String)}
-	 */
-	private static Class<?> getPOclass (String className)
-	{
-		return getPOclass(className, null);
-	}
-	
-	/**
-	 * Get PO class
-	 * @param className fully qualified class name
-	 * @param tableName Optional. If specified, the loaded class will be validated for that table name
-	 * @return class or null
-	 */
-	private static Class<?> getPOclass (String className, String tableName)
-	{
-		try
-		{
-			Class<?> clazz = Class.forName(className);
-			// Validate if the class is for specified tableName
-			if (tableName != null)
-			{
-				String classTableName = clazz.getField("Table_Name").get(null).toString();
-				if (!tableName.equals(classTableName))
-				{
-					s_log.finest("Invalid class for table: " + className+" (tableName="+tableName+", classTableName="+classTableName+")");
-					return null;
-				}
-			}
-			//	Make sure that it is a PO class
-			Class<?> superClazz = clazz.getSuperclass();
-			while (superClazz != null)
-			{
-				if (superClazz == PO.class)
-				{
-					s_log.fine("Use: " + className);
-					return clazz;
-				}
-				superClazz = superClazz.getSuperclass();
-			}
-		}
-		catch (Exception e)
-		{
-		}
-		s_log.finest("Not found: " + className);
-		return null;
-	}	//	getPOclass
-
-	
 	/**************************************************************************
 	 * 	Standard Constructor
 	 *	@param ctx context
@@ -521,60 +321,32 @@ public class MTable extends X_AD_Table
 			log.log(Level.WARNING, "(id) - Multi-Key " + tableName);
 			return null;
 		}
-		Class<?> clazz = getClass(tableName);
+
-		if (clazz == null)
+		PO po = null;
+		List<IModelFactory> factoryList = Service.list(IModelFactory.class);
+		if (factoryList != null)
 		{
-			//log.log(Level.WARNING, "(id) - Class not found for " + tableName);
+			for(IModelFactory factory : factoryList)
-			//return null;
+			{
-			log.log(Level.INFO, "Using GenericPO for " + tableName);
+				po = factory.getPO(tableName, Record_ID, trxName);
-			GenericPO po = new GenericPO(tableName, getCtx(), new Integer(Record_ID), trxName);
+				if (po != null)
-			return po;
+				{
+					if (po.get_ID() != Record_ID && Record_ID > 0)
+						po = null;
+					else
+						break;
+				}
+			}
 		}
 
-		boolean errorLogged = false;
+		if (po == null)
-		try
 		{
-			Constructor<?> constructor = null;
+			po = new GenericPO(tableName, getCtx(), new Integer(Record_ID), trxName);
-			try
+			if (po.get_ID() != Record_ID && Record_ID > 0)
-			{
+				po = null;
-				constructor = clazz.getDeclaredConstructor(new Class[]{Properties.class, int.class, String.class});
-			}
-			catch (Exception e)
-			{
-				String msg = e.getMessage();
-				if (msg == null)
-					msg = e.toString();
-				log.warning("No transaction Constructor for " + clazz + " (" + msg + ")");
 		}
 
-			PO po = (PO)constructor.newInstance(new Object[] {getCtx(), new Integer(Record_ID), trxName});
-			if (po != null && po.get_ID() != Record_ID && Record_ID > 0)
-				return null;
 		return po;
-		}
-		catch (Exception e)
-		{
-			if (e.getCause() != null)
-			{
-				Throwable t = e.getCause();
-				log.log(Level.SEVERE, "(id) - Table=" + tableName + ",Class=" + clazz, t);
-				errorLogged = true;
-				if (t instanceof Exception)
-					log.saveError("Error", (Exception)e.getCause());
-				else
-					log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
-			}
-			else
-			{
-				log.log(Level.SEVERE, "(id) - Table=" + tableName + ",Class=" + clazz, e);
-				errorLogged = true;
-				log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
-			}
-		}
-		if (!errorLogged)
-			log.log(Level.SEVERE, "(id) - Not found - Table=" + tableName 
-				+ ", Record_ID=" + Record_ID);
-		return null;
 	}	//	getPO
 
 	/**
@@ -586,32 +358,24 @@ public class MTable extends X_AD_Table
 	public PO getPO (ResultSet rs, String trxName)
 	{
 		String tableName = getTableName();
-		Class<?> clazz = getClass(tableName);
+
-		if (clazz == null)
+		PO po = null;
+		List<IModelFactory> factoryList = Service.list(IModelFactory.class);
+		if (factoryList != null)
 		{
-			//log.log(Level.SEVERE, "(rs) - Class not found for " + tableName);
+			for(IModelFactory factory : factoryList) {
-			//return null;
+				po = factory.getPO(tableName, rs, trxName);
-			log.log(Level.INFO, "Using GenericPO for " + tableName);
+				if (po != null)
-			GenericPO po = new GenericPO(tableName, getCtx(), rs, trxName);
+					break;
-			return po;
+			}
 		}
 
-		boolean errorLogged = false;
+		if (po == null)
-		try
 		{
-			Constructor<?> constructor = clazz.getDeclaredConstructor(new Class[]{Properties.class, ResultSet.class, String.class});
+			po = new GenericPO(tableName, getCtx(), rs, trxName);
-			PO po = (PO)constructor.newInstance(new Object[] {getCtx(), rs, trxName});
+		}
+
 		return po;
-		}
-		catch (Exception e)
-		{
-			log.log(Level.SEVERE, "(rs) - Table=" + tableName + ",Class=" + clazz, e);
-			errorLogged = true;
-			log.saveError("Error", "Table=" + tableName + ",Class=" + clazz);
-		}
-		if (!errorLogged)
-			log.log(Level.SEVERE, "(rs) - Not found - Table=" + tableName);
-		return null;
 	}	//	getPO
 
 	/**
@@ -644,6 +408,7 @@ public class MTable extends X_AD_Table
 		sqlBuffer.append(" WHERE ").append(whereClause);
 		String sql = sqlBuffer.toString();
 		PreparedStatement pstmt = null;
+		ResultSet rs = null;
 		try
 		{
 			pstmt = DB.prepareStatement (sql, trxName);
@@ -654,29 +419,20 @@ public class MTable extends X_AD_Table
 					pstmt.setObject(i+1, params[i]);
 				}
 			}
-			ResultSet rs = pstmt.executeQuery ();
+			rs = pstmt.executeQuery ();
 			if (rs.next ())
 			{
 				po = getPO(rs, trxName);
 			}
-			rs.close ();
-			pstmt.close ();
-			pstmt = null;
 		}
 		catch (Exception e)
 		{
 			log.log(Level.SEVERE, sql, e);
 			log.saveError("Error", e);
 		}
-		try
+		finally
 		{
-			if (pstmt != null)
+			DB.close(rs, pstmt);
-				pstmt.close ();
-			pstmt = null;
-		}
-		catch (Exception e)
-		{
-			pstmt = null;
 		}
 
 		return po;

org.adempiere.base/src/org/compiere/model/PO.java

@@ -116,9 +116,9 @@ public abstract class PO
 	private static DocWorkflowMgr		s_docWFMgr = null;
 
 	/** User Maintained Entity Type				*/
-	static protected final String ENTITYTYPE_UserMaintained = "U";
+	static public final String ENTITYTYPE_UserMaintained = "U";
 	/** Dictionary Maintained Entity Type		*/
-	static protected final String ENTITYTYPE_Dictionary = "D";
+	static public final String ENTITYTYPE_Dictionary = "D";
 
 	/**************************************************************************
 	 *  Create New Persistent Object

org.adempiere.base/src/org/compiere/util/CLogFile.java

@@ -139,7 +139,7 @@ public class CLogFile extends Handler
 			{
 				fileName += File.separator;
 				if (isClient)
-					fileName += "client";
+					fileName += "client.";
 				else
 					fileName += (CLogMgt.getRootLoggerName() +".");
 				m_fileNameDate = getFileNameDate(System.currentTimeMillis());

org.adempiere.server-feature/build.properties

@@ -1,5 +1,5 @@
 bin.includes = feature.xml
-root=file:build.xml,file:setup.ini
+root=file:build.xml,file:setup.ini,file:extensions-priorty.properties
 root.folder.data=data
 root.folder.setup=setup
 #linux

org.adempiere.server-feature/extensions-priorty.properties

@@ -0,0 +1,2 @@
+#format is extension id=priority, for e.g com.foo.MyModelFactory=10
+#Higher priority value take precedence over lower value, system extensions have priority value 0