Getting null for GenericDelegator.getModelFieldTypeReader(entity) when trying to create new legacydb delegator for external MSSQL integration

[Christian Carlow-OFBizzer]

I've been trying to add the legacydb delegator instructed in
https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data 
but keep getting a nullPointerException error when
this.getModelFieldTypeReader(entity) is called at line 539 of
GenericDelegator.java.  The exeption occurs for the fields that are
supposed to be used for the legacydb delegator.  The problem seems to be
that the default delegator knows about the entities that are supposed to
be handled by the legacydb delegator.

Can anyone tell me what I might be missing?

I created this delegator in entityengine.xml:
     <delegator name="legacydb" entity-model-reader="main"
entity-group-reader="main" entity-eca-reader="main"
distributed-cache-clear-enabled="false">
         <group-map group-name="org.legacydb" datasource-name="localmssql"/>
     </delegator>

I also created the entitygroup_olap.xml file with records for each
entity as follows:
     <entity-group group="org.legacydb" entity="ApprovedsuppliersV2" />

I have these entity resources in the
hot-deploy/legacydb/ofbiz-component.xml file:
     <entity-resource type="model" reader-name="main" loader="main"
location="entitydef/entitymodel.xml"/>
     <entity-resource type="group" reader-name="main" loader="main"
location="entitydef/entitygroup_olap.xml"/>

[Christian Carlow-OFBizzer]

On 01/14/2014 03:46 PM, Christian Carlow wrote:
I forgot to create separate reader and loader in entityentgine.xml for
the legacydb delegator.

After changing changing the reader-name and loader attributes of
<entity-resource> elements in hot-deploy/legacydb/ofbiz-component.xml,
start no longer failed.

It might be worth mentioning of this step in
https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data

> I've been trying to add the legacydb delegator instructed in
> https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data 
> but keep getting a nullPointerException error when
> this.getModelFieldTypeReader(entity) is called at line 539 of
> GenericDelegator.java.  The exeption occurs for the fields that are
> supposed to be used for the legacydb delegator.  The problem seems to
> be that the default delegator knows about the entities that are
> supposed to be handled by the legacydb delegator.
>
> Can anyone tell me what I might be missing?
>
> I created this delegator in entityengine.xml:
>     <delegator name="legacydb" entity-model-reader="main"
> entity-group-reader="main" entity-eca-reader="main"
> distributed-cache-clear-enabled="false">
>         <group-map group-name="org.legacydb"
> datasource-name="localmssql"/>
>     </delegator>
>
> I also created the entitygroup_olap.xml file with records for each
> entity as follows:
>     <entity-group group="org.legacydb" entity="ApprovedsuppliersV2" />
>
> I have these entity resources in the
> hot-deploy/legacydb/ofbiz-component.xml file:
>     <entity-resource type="model" reader-name="main" loader="main"
> location="entitydef/entitymodel.xml"/>
>     <entity-resource type="group" reader-name="main" loader="main"
> location="entitydef/entitygroup_olap.xml"/>
>
>
>

[Christian Carlow-OFBizzer]

Now I'm getting this error when visiting
https://localhost:8443/legacydb/control/main:

HTTP Status 500 - [GenericDelegator.makePK] could not find entity for
entityName: Visitor

The problem is that the legacydb delegator is not aware of the default
delegator Visitor entity.

I tried adding this to my legacydb delegator to resolve the problem but
it still occurs:
<group-map group-name="org.ofbiz" datasource-name="localpostgres"/>

Anyone have any idea what I'm missing?

On 01/14/2014 09:03 PM, Christian Carlow wrote:

> On 01/14/2014 03:46 PM, Christian Carlow wrote:
> I forgot to create separate reader and loader in entityentgine.xml for
> the legacydb delegator.
>
> After changing changing the reader-name and loader attributes of
> <entity-resource> elements in hot-deploy/legacydb/ofbiz-component.xml,
> start no longer failed.
>
> It might be worth mentioning of this step in
> https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data
>
>> I've been trying to add the legacydb delegator instructed in
>> https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data 
>> but keep getting a nullPointerException error when
>> this.getModelFieldTypeReader(entity) is called at line 539 of
>> GenericDelegator.java.  The exeption occurs for the fields that are
>> supposed to be used for the legacydb delegator.  The problem seems to
>> be that the default delegator knows about the entities that are
>> supposed to be handled by the legacydb delegator.
>>
>> Can anyone tell me what I might be missing?
>>
>> I created this delegator in entityengine.xml:
>>     <delegator name="legacydb" entity-model-reader="main"
>> entity-group-reader="main" entity-eca-reader="main"
>> distributed-cache-clear-enabled="false">
>>         <group-map group-name="org.legacydb"
>> datasource-name="localmssql"/>
>>     </delegator>
>>
>> I also created the entitygroup_olap.xml file with records for each
>> entity as follows:
>>     <entity-group group="org.legacydb" entity="ApprovedsuppliersV2" />
>>
>> I have these entity resources in the
>> hot-deploy/legacydb/ofbiz-component.xml file:
>>     <entity-resource type="model" reader-name="main" loader="main"
>> location="entitydef/entitymodel.xml"/>
>>     <entity-resource type="group" reader-name="main" loader="main"
>> location="entitydef/entitygroup_olap.xml"/>
>>
>>
>>
>

[Christian Carlow-OFBizzer]

Solved.  I mistakenly changed the entityDelegatorName in
hot-deploy/legacydb/webapp/legacydb/WEB-INF/web.xml to "legacydb" when
it needed to stay set to "default" so that it is aware of the
web-related entities required to load the page.

On 01/15/2014 07:23 AM, Christian Carlow wrote:

> Now I'm getting this error when visiting
> https://localhost:8443/legacydb/control/main:
>
> HTTP Status 500 - [GenericDelegator.makePK] could not find entity for
> entityName: Visitor
>
> The problem is that the legacydb delegator is not aware of the default
> delegator Visitor entity.
>
> I tried adding this to my legacydb delegator to resolve the problem
> but it still occurs:
> <group-map group-name="org.ofbiz" datasource-name="localpostgres"/>
>
> Anyone have any idea what I'm missing?
>
> On 01/14/2014 09:03 PM, Christian Carlow wrote:
>> On 01/14/2014 03:46 PM, Christian Carlow wrote:
>> I forgot to create separate reader and loader in entityentgine.xml
>> for the legacydb delegator.
>>
>> After changing changing the reader-name and loader attributes of
>> <entity-resource> elements in
>> hot-deploy/legacydb/ofbiz-component.xml, start no longer failed.
>>
>> It might be worth mentioning of this step in
>> https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data
>>
>>> I've been trying to add the legacydb delegator instructed in
>>> https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data 
>>> but keep getting a nullPointerException error when
>>> this.getModelFieldTypeReader(entity) is called at line 539 of
>>> GenericDelegator.java.  The exeption occurs for the fields that are
>>> supposed to be used for the legacydb delegator.  The problem seems
>>> to be that the default delegator knows about the entities that are
>>> supposed to be handled by the legacydb delegator.
>>>
>>> Can anyone tell me what I might be missing?
>>>
>>> I created this delegator in entityengine.xml:
>>>     <delegator name="legacydb" entity-model-reader="main"
>>> entity-group-reader="main" entity-eca-reader="main"
>>> distributed-cache-clear-enabled="false">
>>>         <group-map group-name="org.legacydb"
>>> datasource-name="localmssql"/>
>>>     </delegator>
>>>
>>> I also created the entitygroup_olap.xml file with records for each
>>> entity as follows:
>>>     <entity-group group="org.legacydb" entity="ApprovedsuppliersV2" />
>>>
>>> I have these entity resources in the
>>> hot-deploy/legacydb/ofbiz-component.xml file:
>>>     <entity-resource type="model" reader-name="main" loader="main"
>>> location="entitydef/entitymodel.xml"/>
>>>     <entity-resource type="group" reader-name="main" loader="main"
>>> location="entitydef/entitygroup_olap.xml"/>
>>>
>>>
>>>
>>
>