Re: [xwiki-users] xwql join query

2010-11-22 Thread afrey

I tried the following query but I didn't get anything :(
#set($fruits = $services.query.xwql(from doc.object(Fruit.FruitClass) as
fru, doc.object(Supplier.SupplierClass) as sup where
fru.Supplier.Name=sup.Name and sup.City='Melbourne').execute())
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Re: [xwiki-users] xwql join query

2010-11-22 Thread Marius Dumitru Florea
Hi Alina,

On 11/22/2010 04:12 PM, afrey wrote:

 Hi all,

 I'm struggling creating a xwql query that joins two tables.

 Let's say I have two classes: Fruit and Supplier.

 Fruit has the following properties: Name, Supplier.

What's the type of the Supplier property? Is it a database list? Have 
you tried using a string property instead (e.g. supplier name) and a 
join condition like fruit.Supplier = supplier.Name ?

Hope this helps,
Marius

 Supplier has the following properties: Name, City.

 I need the query that returns:
 All Fruit that has Supplier with City='Melbourne'.

 I can get all the Fruit objects:
 #set($fruits = $services.query.xwql(from doc.object(Fruit.FruitClass) as
 fru).execute())

 And separately I can get all the Supplier objects that have city='Melbourne'
 #set($suppliers = $services.query.xwql(where
 doc.object(Supplier.SupplierClass).City='Melbourne').execute())

 But I can't combine them. Please advise.

 Alina.
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Re: [xwiki-users] xwql join query

2010-11-22 Thread afrey

Yes, sorry I forgot to mention.

Supplier property is a Database List (it allows to select one Supplier from
all of the Supplier objects created). Therefore I cannot have it set as
string. It needs to be a selection from Supplier objects.
Please check the previous post to see the join query that I tried.

Alina.
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Re: [xwiki-users] xwql join query

2010-11-22 Thread Marius Dumitru Florea
On 11/22/2010 04:27 PM, afrey wrote:

 I tried the following query but I didn't get anything :(
 #set($fruits = $services.query.xwql(from doc.object(Fruit.FruitClass) as
 fru, doc.object(Supplier.SupplierClass) as sup where
 fru.Supplier.Name=sup.Name and sup.City='Melbourne').execute())

On 
http://platform.xwiki.org/xwiki/bin/view/DevGuide/QueryGuide#HQueryLanguageExamples
 
there is a query described as Search blogs per category. Blog category 
is a database tree but member of might work with database lists also. 
Can you try:

#set($fruits = $services.query.xwql(from doc.object(Fruit.FruitClass) 
as fru, doc.object(Supplier.SupplierClass) as sup where sup member of 
fru.Supplier and sup.City='Melbourne').execute())

Hope this helps,
Marius
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Re: [xwiki-users] xwql join query

2010-11-22 Thread afrey

I tried the query and it doesn't work. It seems that member of causes the
query to fail to execute.
Unfortunately I cannot use Database tree as the data type for Supplier
property of Fruit.



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Re: [xwiki-users] xwql join query

2010-11-22 Thread afrey

It doesn't have to be an xwql query. It could be sql, hql, anything that
would work ;)
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