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Solved

Coldfusion orm oneToMany join query don't work

Posted on 2013-06-21
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Last Modified: 2013-11-19
I have 2 persistent entities : Product & ProductMaterial.

Product can't be sumarize like This :

<cfproperty name="id" type="numeric" fieldtype="id" ormtype="int" generator="native" setter="false" hint="the unique id of the product">
...
<cfproperty name="materials" type="array" fieldtype="one-to-many" hint="the materials of the product" cfc="ProductMaterial" singularname="material" fkcolumn="productId"    orderby="name"  cascade="all-delete-orphan">

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And ProductMaterial is :

<cfproperty name="id" type="numeric" fieldtype="id" ormtype="int" generator="native" setter="false" hint="the unique id of the material">
<cfproperty name="name" type="string" fieldtype="column" ormtype="string" length="50" validate="string" validateparams="{minLength=1,maxLength=50}" hint="the name of the material">

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I want to get the products according a selected material, for instance 'Wood'

I have tried, among other things similar, this :

<cfset variables.products = ormExecuteQuery("from Product p join p.materials m where m.name = 'wood' and isPack=true order by referenceId desc")>

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But it returns me 0 records (there must be 433 records !).

Do u have an idea what's wrong ?

Thanks.
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Question by:adam1h
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3 Comments
 
LVL 25

Expert Comment

by:James Rodgers
ID: 39271184
the join doesn't seem correct


from Product p join p.materials m where m.name

should either be
 from Product p, materials m
Where p.col=m.com and m.name =

or
from Product p
LEFT JOIN  Materials m
on p.col=m.col
WHERE m.name=
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Accepted Solution

by:
adam1h earned 0 total points
ID: 39272117
Hi,

Thanks for this idea, but in fact in HQL, there is no need to specify the field for the join, hibernate know it as it is mapped.

The problem was my type of relationship who was oneToMany. I have changed it to ManyToMany, who is more meaningful.

Also, I have a boolean field (isPack) whose possible values are T or F.
In an entityLoad function, I use isPack=true without trouble, but in the ormExecuteQuery function, it fail : I need to write isPack='T'.

Thanks for the help.
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Author Closing Comment

by:adam1h
ID: 39286393
I have receive no corect answer, I have found myself the solution (as described in the comment).
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