Comment on Query in morphia

[mor...@googlecode.com]

Comment by kratos00...@gmail.com:

hi, how to force Query references with Eager?

:) sorry about my bad English

For more information:
http://code.google.com/p/morphia/wiki/Query

[mor...@googlecode.com]

Comment by jm...@exoanalytic.com:

Let's say I want to use the fluent interface to find which {{{Person}}}s
have an {{{Address}}} is equal to {{{addr}}}:

{{{Query<Person> =
ds.createQuery(Person.class).field("address").equal(addr);}}}

How is equality determined? Is Morphia essentially confirming that
{{{addr.id}}} equals {{{Person.address.id}}}? This would imply that you
can't query for equality against an object that has not been saved the db -
is this correct? Thanks!

[mor...@googlecode.com]

Comment by goudreau...@gmail.com:

Does the generic filter accept patterns ?

[mor...@googlecode.com]

Comment by sc...@10gen.com:

jm..., It will compare all the fields. If you just want to match on a
single field, then use that field (using dot-notation).

[mor...@googlecode.com]

Comment by sc...@10gen.com:

goudreau: do you mean like a regular expression?

It is best to ask questions on the group/list, please follow up there.

[mor...@googlecode.com]

Comment by jianghai...@gmail.com:

I do not see any support for limit(), is that the case?

[mor...@googlecode.com]

Comment by scotthernandez:

There is support for limit; I will add some docs.

[mor...@googlecode.com]

Comment by caoxin1...@gmail.com:

(condition_A1 && condition_A2 && condition_A3) || (condition_B1 &&
condition_B2 && condition_B3) || (condition_C1 && condition_C2 &&
condition_C3)

how to use query to do?

[mor...@googlecode.com]

Comment by xer...@gmail.com:

I've got the same problem. How to use query to do:

(condition_A1 || condition_A2 || condition_A3)
&& (condition_B1 || condition_B2 || condition_B3)
&& (condition_C1 || condition_C2 || condition_C3)

Thanks in advance

[mor...@googlecode.com]

Comment by alexsap...@gmail.com:

How to include more than one fields in the returned data with
retrievedFields???
I mean you do query.retrievedFields(true,"field,field"); ?

[mor...@googlecode.com]

Comment by scotthernandez:

Yes, a comma sep. list is the way.

[mor...@googlecode.com]

Comment by alexsap...@gmail.com:

Thanks for the quick response. I don't know what i am doing wrong here?
I have a DAO to access the database.
My code id :
{{{
Query<Venue> temp = createQuery();
List<Venue> venues = temp.retrievedFields(false, "photos, Lat, Lng")....
}}}
But it return "The field 'photos, Lat, Lng' could not be found " but i have
declared them???

[mor...@googlecode.com]

Comment by alexsap...@gmail.com:

Hi, i resolved my problem with a workaround i don't know if it is a bug or
not but it worked for me.
{{{
String _f = "photos,Lat,Lng";
String [] fields = _f.split(",");
temp = temp.retrievedFields(false, fields);
}}}
The second parameter must be an array of strings. I think that this could
be done inside the retrievedFields functions.

[mor...@googlecode.com]

Comment by scotthernandez:

Yes, the last arg is a var arg, or String[]. I updated the docs; sorry for
the mistake.

[mor...@googlecode.com]

Comment by kubu...@gmail.com:

hi I want to search in a map type field. For example:

p <contry,city>

q.field(p).hasAnyOf("Istanbul");

how can I do that?

ps: it's not working of course.

[mor...@googlecode.com]

Comment by wouter...@gmail.com:

It would be nice if we could query type safe, e.g. make sure the field foo
actually exists in MyEntity.class and that operations are compatible with
this type. This probably involve some code generetion to generate a class
like 'MyEntityField' that has a field FOO and legitimate operations.

Some one can write:
ds.createQuery(MyEntity.class).filter(MyEntityField.FOO.lessThan(12)).offset(1000);
instead of:
ds.createQuery(MyEntity.class).filter("foo >", 12).offset(1000);

Any thoughts on this?

[mor...@googlecode.com]

[mor...@googlecode.com]

Comment by wouter...@gmail.com:

It would be nice if we could query type safe, e.g. make sure the field foo
actually exists in `MyEntity.class` and that operations are compatible with

this type. This will probably involve some code generetion to generate a

[mor...@googlecode.com]

Comment by wouter...@gmail.com:

@Myself,

QueryDSL has a mongodb plugin that works with morphia:
http://www.querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html

[mor...@googlecode.com]

Comment by mvoro...@gmail.com:

I have Query that is executed without changes multiple times. Can I make
Query as a static field? in other word is Query thread-safe?

[mor...@googlecode.com]

Comment by msad...@gmail.com:

I just have a question regarding 'sort' functionality. Here the sort
functions works fine for fields available in the entity. If there is a map
variable --"var1"-- in the entity(consider this map variable also a field
in the entity class) , I would like to do a sort based on a particular
key/value of this map (say i want to sort based on --var1.get("key1")--,
how do i access to the value when i use order("Field names")).

Plz help me !

thanks,
sadish

[mor...@googlecode.com]

Comment by corybill...@gmail.com:

Any body else notice that saying .limit() does nothing to a query. The
size of the query is never effected. Is it broken????

[mor...@googlecode.com]

Comment by itc...@gmail.com:

How to print the Query? like hibernate,the override toString method will
supply the query sql.But how morphia print the query?

For more information:
https://code.google.com/p/morphia/wiki/Query

[mor...@googlecode.com]

[mor...@googlecode.com]

Comment by narapi...@gmail.com:

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