If the ExecutionContext interface is in base and the GenericDelegator interface is in entity and the ExecutionContext needs to use the GenericDelegator interface, how will that work?

-David


On Aug 10, 2009, at 5:19 PM, Adrian Crum wrote:

In my implementation, I put the ExecutionContext in framework/base.

I'll work on updating the branch - I caused the problem, so I'll fix it.

-Adrian

David E Jones wrote:
Yes, that's why I did a similar thing in the branch.
Stepping back a little... please keep in mind that the interface will not be able to stay in the entity component. Part of the point of making these interfaces is so that we can have a ExecutionContext that knows certain things about a number of framework components without actually depending on those components at compile time. Instead with the interfaces in the execution context component all of the other components can depend on and share that. Without that pattern it will be impossible to implement the execution context. As part of that, I'd rather do them all together rather than separately otherwise (like I mentioned before) merging the branch will become difficult. In fact, even with the changes you've already added to the trunk the merge is already a HUGE mess... (ie just updating the branch against the trunk).
-David
On Aug 10, 2009, at 4:42 PM, Adrian Crum wrote:
I checked out the branch and examined it. After looking over your ideas, I saw a way to make incremental changes to the trunk - negating the need for a branch.

The GenericDelegator refactor was done for two reasons:

1. To eliminate the hundreds of references to a concrete class, that have caused inconvenience in the past. 2. Eliminate thread local variables and the cumbersome pushing and popping of the GenericDelegator state.

How it relates to the ExecutionContext is, we have the ability to keep an instance in the GenericDelegator without having to create more thread local variables and have even more things to push/pop.

It's a cleaner design.

-Adrian

David E Jones wrote:
Adrian,
What is all of this, and how does it relate to what I've been working on in the executioncontext20090716 branch?
It seems like this will:
1. cause some inconvenience now, while more comprehensive changes are being made in the executioncontext20090716 branch 2. make it a LOT more difficult (perhaps impossible) to merge the executioncontext20090716 branch
What is your plan with this?
It would make life a lot easier for all of us if you would do some research on what I've already done in the executioncontext20090716 branch before continuing with this.
-David
On Aug 9, 2009, at 12:04 PM, adri...@apache.org wrote:
Author: adrianc
Date: Sun Aug  9 18:04:26 2009
New Revision: 802567

URL: http://svn.apache.org/viewvc?rev=802567&view=rev
Log:
Refactored GenericDelegator:

1. Converted GenericDelegator to an interface. We already have DelegatorInterface, but it isn't being used anywhere. Removed DelegatorInterface.java.

2. Extracted the static, cached data from the GenericDelegator implementation and put it in its own class - DelegatorData. The GenericDelegator implementation holds a reference to the DelegatorData instance. This makes it possible to have per- thread instances of GenericDelegator.

3. Replaced the ThreadLocal variables with regular variables. ThreadLocal variables are no longer needed. Client code doesn't need to be concerned with pushing and popping the GenericDelegator state.

This commit paves the way for the forthcoming ExecutionContext.

User modifications will have to replace GenericDelegator.getGenericDelegator(...) with DelegatorFactory.getGenericDelegator(...). Also, replace the push code with the new setXxx methods, and remove the pop code. If modifications used DelegatorInterface, replace that with GenericDelegator.

Aside from those changes, this commit is backwards compatible.

Added:
ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorData.java (with props) ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorFactory.java (with props) ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorImpl.java (with props)
Removed:
ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorInterface.java
Modified:
ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/ CartEventListener.java ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/ ShoppingCart.java ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/ ShoppingCartItem.java ofbiz/trunk/applications/product/src/org/ofbiz/shipment/packing/ PackingSession.java ofbiz/trunk/applications/product/src/org/ofbiz/shipment/verify/ VerifyPickSession.java ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ weightPackage/WeightPackageSession.java ofbiz/trunk/framework/catalina/src/org/ofbiz/catalina/container/ CatalinaContainer.java ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ GenericDelegator.java ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ GenericEntity.java ofbiz/trunk/framework/entity/src/org/ofbiz/entity/cache/ AbstractCache.java ofbiz/trunk/framework/entity/src/org/ofbiz/entity/condition/ EntityExpr.java ofbiz/trunk/framework/entity/src/org/ofbiz/entity/finder/ ListFinder.java ofbiz/trunk/framework/entityext/src/org/ofbiz/entityext/data/ EntityDataLoadContainer.java ofbiz/trunk/framework/entityext/src/org/ofbiz/entityext/ synchronization/EntitySyncContext.java ofbiz/trunk/framework/entityext/src/org/ofbiz/entityext/ synchronization/EntitySyncServices.java ofbiz/trunk/framework/guiapp/src/org/ofbiz/guiapp/xui/ XuiContainer.java ofbiz/trunk/framework/minilang/src/org/ofbiz/minilang/method/ entityops/EntityCount.java ofbiz/trunk/framework/minilang/src/org/ofbiz/minilang/method/ entityops/EntityData.java ofbiz/trunk/framework/minilang/src/org/ofbiz/minilang/method/ entityops/FindByAnd.java ofbiz/trunk/framework/minilang/src/org/ofbiz/minilang/method/ entityops/FindByPrimaryKey.java ofbiz/trunk/framework/service/src/org/ofbiz/service/ ServiceDispatcher.java ofbiz/trunk/framework/service/src/org/ofbiz/service/mail/ JavaMailContainer.java ofbiz/trunk/framework/service/src/org/ofbiz/service/rmi/ RmiServiceContainer.java ofbiz/trunk/framework/testtools/src/org/ofbiz/testtools/ ModelTestSuite.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/control/ ContextFilter.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/control/ ControlServlet.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/control/ RequestHandler.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/ CoreEvents.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/ ServiceStreamHandler.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/ XmlRpcEventHandler.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/stats/ ServerHitBin.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/stats/ VisitHandler.java ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/webdav/ WebDavServlet.java ofbiz/trunk/framework/webslinger/src/org/ofbiz/webslinger/ WebslingerContextMapper.java ofbiz/trunk/framework/webtools/src/org/ofbiz/webtools/ WebToolsServices.java ofbiz/trunk/specialpurpose/shark/src/org/ofbiz/shark/audit/ AuditEntityObject.java ofbiz/trunk/specialpurpose/shark/src/org/ofbiz/shark/container/ SharkContainer.java ofbiz/trunk/specialpurpose/shark/src/org/ofbiz/shark/instance/ InstanceEntityObject.java ofbiz/trunk/specialpurpose/shark/src/org/ofbiz/shark/requester/ AbstractRequester.java ofbiz/trunk/specialpurpose/webpos/src/org/ofbiz/webpos/session/ WebPosSession.java ofbiz/trunk/specialpurpose/workflow/src/org/ofbiz/workflow/ definition/XpdlReader.java

Modified: ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/CartEventListener.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/CartEventListener.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/CartEventListener.java (original) +++ ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/CartEventListener.java Sun Aug 9 18:04:26 2009
@@ -28,6 +28,7 @@
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.webapp.stats.VisitHandler;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
@@ -58,7 +59,7 @@
String delegatorName = (String) session.getAttribute("delegatorName");
      GenericDelegator delegator = null;
      if (UtilValidate.isNotEmpty(delegatorName)) {
- delegator = GenericDelegator.getGenericDelegator(delegatorName); + delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      if (delegator == null) {
Debug.logError("Could not find delegator with delegatorName in session, not saving abandoned cart info.", module);

Modified: ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCart.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/ShoppingCart.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCart.java (original) +++ ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCart.java Sun Aug 9 18:04:26 2009
@@ -21,6 +21,7 @@
import javolution.util.FastList;
import javolution.util.FastMap;
import org.ofbiz.base.util.*;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericPK;
@@ -275,7 +276,7 @@

  public GenericDelegator getDelegator() {
      if (delegator == null) {
- delegator = GenericDelegator.getGenericDelegator(delegatorName); + delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      return delegator;
  }

Modified: ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCartItem.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/order/src/org/ofbiz/order/shoppingcart/ShoppingCartItem.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCartItem.java (original) +++ ofbiz/trunk/applications/order/src/org/ofbiz/order/ shoppingcart/ShoppingCartItem.java Sun Aug 9 18:04:26 2009
@@ -41,6 +41,7 @@
import org.ofbiz.base.util.UtilMisc;
import org.ofbiz.base.util.UtilProperties;
import org.ofbiz.base.util.UtilValidate;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericPK;
@@ -2406,7 +2407,7 @@
          if (UtilValidate.isEmpty(delegatorName)) {
throw new IllegalStateException("Bad delegator name");
          }
- delegator = GenericDelegator.getGenericDelegator(delegatorName); + delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      return delegator;
  }

Modified: ofbiz/trunk/applications/product/src/org/ofbiz/ shipment/packing/PackingSession.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/product/src/org/ofbiz/shipment/packing/PackingSession.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ packing/PackingSession.java (original) +++ ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ packing/PackingSession.java Sun Aug 9 18:04:26 2009
@@ -35,6 +35,7 @@
import org.ofbiz.base.util.UtilFormatOut;
import org.ofbiz.base.util.UtilMisc;
import org.ofbiz.base.util.UtilValidate;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
@@ -500,7 +501,7 @@

  public GenericDelegator getDelegator() {
      if (_delegator == null) {
- _delegator = GenericDelegator.getGenericDelegator(delegatorName); + _delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      return _delegator;
  }

Modified: ofbiz/trunk/applications/product/src/org/ofbiz/ shipment/verify/VerifyPickSession.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/product/src/org/ofbiz/shipment/verify/VerifyPickSession.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ verify/VerifyPickSession.java (original) +++ ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ verify/VerifyPickSession.java Sun Aug 9 18:04:26 2009
@@ -32,6 +32,7 @@
import org.ofbiz.base.util.UtilMisc;
import org.ofbiz.base.util.UtilProperties;
import org.ofbiz.base.util.UtilValidate;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
@@ -76,7 +77,7 @@

  public GenericDelegator getDelegator() {
      if (_delegator == null) {
- _delegator = GenericDelegator.getGenericDelegator(delegatorName); + _delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      return _delegator;
  }

Modified: ofbiz/trunk/applications/product/src/org/ofbiz/ shipment/weightPackage/WeightPackageSession.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/applications/product/src/org/ofbiz/shipment/weightPackage/WeightPackageSession.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ weightPackage/WeightPackageSession.java (original) +++ ofbiz/trunk/applications/product/src/org/ofbiz/shipment/ weightPackage/WeightPackageSession.java Sun Aug 9 18:04:26 2009
@@ -34,6 +34,7 @@
import org.ofbiz.base.util.UtilNumber;
import org.ofbiz.base.util.UtilProperties;
import org.ofbiz.base.util.UtilValidate;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
@@ -102,7 +103,7 @@

  public GenericDelegator getDelegator() {
      if (_delegator == null) {
- _delegator = GenericDelegator.getGenericDelegator(delegatorName); + _delegator = DelegatorFactory.getGenericDelegator(delegatorName);
      }
      return _delegator;
  }

Modified: ofbiz/trunk/framework/catalina/src/org/ofbiz/catalina/ container/CatalinaContainer.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/framework/catalina/src/org/ofbiz/catalina/container/CatalinaContainer.java?rev=802567&r1=802566&r2=802567&view=diff
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/framework/catalina/src/org/ofbiz/catalina/ container/CatalinaContainer.java (original) +++ ofbiz/trunk/framework/catalina/src/org/ofbiz/catalina/ container/CatalinaContainer.java Sun Aug 9 18:04:26 2009
@@ -36,6 +36,7 @@
import org.ofbiz.base.container.ContainerException;
import org.ofbiz.base.container.ContainerConfig.Container.Property;
import org.ofbiz.base.util.*;
+import org.ofbiz.entity.DelegatorFactory;
import org.ofbiz.entity.GenericDelegator;

import org.apache.catalina.Cluster;
@@ -168,7 +169,7 @@
//int debug = ContainerConfig.getPropertyValue(cc, "debug", 0);

      // grab some global context settings
- this.delegator = GenericDelegator .getGenericDelegator(ContainerConfig.getPropertyValue(cc, "delegator-name", "default")); + this.delegator = DelegatorFactory .getGenericDelegator(ContainerConfig.getPropertyValue(cc, "delegator-name", "default")); this.contextReloadable = ContainerConfig.getPropertyValue(cc, "apps-context-reloadable", false); this.crossContext = ContainerConfig.getPropertyValue(cc, "apps-cross-context", true); this.distribute = ContainerConfig.getPropertyValue(cc, "apps-distributable", true);

Added: ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorData.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/framework/entity/src/org/ofbiz/entity/DelegatorData.java?rev=802567&view=auto
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorData.java (added) +++ ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorData.java Sun Aug 9 18:04:26 2009
@@ -0,0 +1,110 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.ofbiz.entity;
+
+import java.util.Map;
+
+import javolution.util.FastMap;
+
+import org.ofbiz.base.util.Debug;
+import org.ofbiz.entity.cache.Cache;
+import org.ofbiz.entity.config.DelegatorInfo;
+import org.ofbiz.entity.config.EntityConfigUtil;
+import org.ofbiz.entity.eca.EntityEcaHandler;
+import org.ofbiz.entity.model.ModelGroupReader;
+import org.ofbiz.entity.model.ModelReader;
+import org.ofbiz.entity.util.DistributedCacheClear;
+import org.ofbiz.entity.util.EntityCrypto;
+import org.ofbiz.entity.util.SequenceUtil;
+
+/** Data source for the DelegatorImpl Class. */
+public class DelegatorData implements Cloneable {
+
+ public static final String module = DelegatorData.class.getName();
+    /**
+ * the delegatorDataCache will now be a HashMap, allowing reload of + * definitions, but the delegator will always be the same object for the
+     * given name
+     */
+ protected static final Map<String, DelegatorData> delegatorDataCache = FastMap.newInstance();
+
+    /**
+ * keeps a list of field key sets used in the by and cache, a Set (of Sets
+     * of fieldNames) for each entityName
+     */
+ protected Map<?, ?> andCacheFieldSets = FastMap.newInstance();
+    protected Cache cache = null;
+    protected EntityCrypto crypto = null;
+    protected DelegatorInfo delegatorInfo = null;
+    protected String delegatorName = null;
+    protected DistributedCacheClear distributedCacheClear = null;
+    protected EntityEcaHandler<?> entityEcaHandler = null;
+    protected ModelGroupReader modelGroupReader = null;
+    protected ModelReader modelReader = null;
+    protected String originalDelegatorName = null;
+    protected SequenceUtil sequencer = null;
+    protected boolean initialized = false;
+
+ public static synchronized DelegatorData getInstance(String delegatorName) throws GenericEntityException {
+        if (delegatorName == null) {
+            delegatorName = "default";
+ Debug.logWarning(new Exception("Location where getting delegator with null name"), "Got a getGenericDelegator call with a null delegatorName, assuming \"default\" for the name.", module);
+        }
+ DelegatorData delegatorData = delegatorDataCache.get(delegatorName);
+        if (delegatorData == null) {
+            if (Debug.infoOn()) {
+ Debug.logInfo("Creating new delegator data instance [" + delegatorName + "] (" + Thread.currentThread().getName() + ")", module);
+            }
+            delegatorData = new DelegatorData(delegatorName);
+            delegatorDataCache.put(delegatorName, delegatorData);
+        }
+        return delegatorData;
+    }
+
+    /** Only allow creation through the factory method */
+    protected DelegatorData() {
+    }
+
+    /** Only allow creation through the factory method */
+ protected DelegatorData(String delegatorName) throws GenericEntityException {
+        this.delegatorName = delegatorName;
+        this.originalDelegatorName = delegatorName;
+ this.modelReader = ModelReader.getModelReader(delegatorName); + this.modelGroupReader = ModelGroupReader.getModelGroupReader(delegatorName);
+        this.cache = new Cache(delegatorName);
+ this.delegatorInfo = EntityConfigUtil.getDelegatorInfo(this.delegatorName);
+    }
+
+    @Override
+    protected Object clone() {
+        DelegatorData delegatorData = new DelegatorData();
+        delegatorData.modelReader = this.modelReader;
+        delegatorData.modelGroupReader = this.modelGroupReader;
+        delegatorData.delegatorName = this.delegatorName;
+        delegatorData.delegatorInfo = this.delegatorInfo;
+        delegatorData.cache = this.cache;
+        delegatorData.andCacheFieldSets = this.andCacheFieldSets;
+ delegatorData.distributedCacheClear = this.distributedCacheClear; + delegatorData.originalDelegatorName = this.originalDelegatorName;
+        delegatorData.entityEcaHandler = this.entityEcaHandler;
+        delegatorData.sequencer = this.sequencer;
+        delegatorData.crypto = this.crypto;
+        return delegatorData;
+    }
+}

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Added: ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorFactory.java
URL: 
http://svn.apache.org/viewvc/ofbiz/trunk/framework/entity/src/org/ofbiz/entity/DelegatorFactory.java?rev=802567&view=auto
= = = = = = = = = = = = ================================================================== --- ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorFactory.java (added) +++ ofbiz/trunk/framework/entity/src/org/ofbiz/entity/ DelegatorFactory.java Sun Aug 9 18:04:26 2009
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.ofbiz.entity;
+
+import org.ofbiz.base.util.Debug;
+
+/** GenericDelegator Factory Class. */
+public class DelegatorFactory {
+
+ public static final String module = DelegatorFactory.class.getName();
+
+ public static GenericDelegator getGenericDelegator(String delegatorName) {
+        if (delegatorName == null) {
+            delegatorName = "default";
+ Debug.logWarning(new Exception("Location where getting delegator with null name"), "Got a getGenericDelegator call with a null delegatorName, assuming default for the name.", module);
+        }
+        DelegatorData delegatorData = null;
+        try {
+ delegatorData = DelegatorData.getInstance(delegatorName);
+        } catch (GenericEntityException e) {
+ Debug.logError(e, "Could not create delegator with name \"" + delegatorName + "\": ", module);
+        }
+        if (delegatorData != null) {
+            return new DelegatorImpl(delegatorData);
+        }
+        return null;
+    }
+}

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