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git-svn-id: https://svn.jboss.org/repos/hibernate/trunk/Hibernate3/doc@7156 1b8cb986-b30d-0410-93ca-fae66ebed9b2
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Gavin King 2005-06-16 00:08:29 +00:00
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reference/en/modules/query_hql.xml
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@ -127,6 +127,15 @@
<programlisting><![CDATA[from Cat as cat
join cat.mate as mate
left join cat.kittens as kitten]]></programlisting>
<para>
You may supply extra join conditions using the HQL <literal>with</literal>
keyword.
</para>
<programlisting><![CDATA[from Cat as cat
left join cat.kittens as kitten
with kitten.bodyWeight > 10.0]]></programlisting>
<para>
In addition, a "fetch" join allows associations or collections of values to be
@ -157,6 +166,7 @@
Note that the <literal>fetch</literal> construct may not be used in queries called using
<literal>scroll()</literal> or <literal>iterate()</literal>. Nor should <literal>fetch</literal>
be used together with <literal>setMaxResults()</literal> or <literal>setFirstResult()</literal>.
Nor may <literal>fetch</literal> be used together with an ad hoc <literal>with</literal> condition.
It is possible to create a cartesian product by join fetching more than one collection in a
query, so take care in this case. Join fetching multiple collection roles also sometimes gives
unexpected results for bag mappings, so be careful about how you formulate your queries in this