On Wed, Aug 20, 2008 at 2:22 PM, Eric Polino
<[EMAIL PROTECTED]> wrote:
> Alright sweet! That was it! Thanks.
>
> Now, QueryChain always returns DataRows because it can't know how to
> marshal objects. Clearly the results from the three queries being run
> in the following code could be marshaled into List<Student> objects.
> Is there a way I can do that?
>
> SQLTemplate tmpl = new SQLTemplate(TypeFoo.class, "select
Typo, that should be Student.class, and not TypeFoo.class
> #result('field1' 'int' 'age'), #result('field2' 'String' 'name') from
> Students where age < $bar");
> QueryChain query = new QueryChain();
>
> Map<String, String> param = new HashMap<String, String>();
>
> param.put("bar", "4");
> query.add(tmpl.queryWithParameters(param));
>
> param.put("bar", "7");
> query.add(tmpl.queryWithParameters(param));
>
> param.put("bar", "14");
> query.add(tmpl.queryWithParameters(param));
>
> QueryResponse response = context.performGenericQuery(query);
>
> Here's how I'm getting my List<List<DataRow>> object from
> performGenericQuery(). It's a little dirty, but it seems to work for
> me. Is this any useful to the marshaling I'm talking about above?
>
> QueryResponse ret = getDataContext().performGenericQuery(query);
> List<List<DataRow>> val = new ArrayList<List<DataRow>>();
> ret.reset();
> while(ret.next()){
> if(ret.isList()){
> val.add(ret.currentList());
> }
> }
>
> Once again, TIA,
> Eric
>
>
> On Wed, Aug 20, 2008 at 4:09 AM, Andrus Adamchik <[EMAIL PROTECTED]> wrote:
>> Hi Eric,
>>
>> 'performQuery' method will only return the first result set, no matter how
>> many results you have in the query. To get all results, you will need to use
>> a different method for select:
>>
>> QueryResponse result = context.performGenericQuery(query);
>>
>> Then you can scan vis the QueryResponse object and access individual result
>> lists:
>>
>> http://cayenne.apache.org/doc/api/org/apache/cayenne/QueryResponse.html
>>
>> HTH
>> Andrus
>>
>>
>> On Aug 19, 2008, at 5:21 PM, Eric Polino wrote:
>>
>>> I need to run a group of select queries all at once and would like to
>>> parallelize it. I'm attempting to do it with QueryChain but I'm
>>> having issues getting the data I'm querying. I know that QueryChain
>>> will always return DataRows, but it seems as though I only get the
>>> first query's result back and not all of them. I'm using this page
>>> from the guide as my starting point.
>>> http://cayenne.apache.org/doc/querychain.html
>>>
>>> QueryChain query = new QueryChain();
>>>
>>> query.addQuery(new SQLTemplate(TypeFoo.class, "select count(*) as foo1
>>> from TypeFoo"));
>>> query.addQuery(new SQLTemplate(TypeBar.class, "select count(*) as foo2
>>> from TypeBar"));
>>> query.addQuery(new SQLTemplate(Type.class, "select count(*) as foo3
>>> from Type"));
>>>
>>> List<DataRow> ret = getDataContext().performQuery(query);
>>> DataRow dr = ret.get(0);
>>>
>>> System.out.println(ret.size()); // "1"
>>> System.out.println(dr.keySet().size()); // "1"
>>> System.out.println("FOO1 " + dr.get("FOO1")); // "FOO1 123"
>>> System.out.println("FOO2 " + dr.get("FOO2")); // "FOO2 null"
>>> System.out.println("FOO3 " + dr.get("FOO3")); // "FOO3 null"
>>>
>>> TIA,
>>> Eric
>>>
>>>
>>> --
>>> Eric Polino
>>> Campground Automated Systems
>>>
>>
>>
>
>
>
> --
> Eric Polino
> Campground Automated Systems
>
--
Eric Polino
Campground Automated Systems
