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imp_galo
 Post subject: @Formula and Lazy
PostPosted: Mon Sep 15, 2008 2:22 pm 
Newbie

Joined: Tue Mar 18, 2008 12:34 pm
Posts: 6
Hi All,
How do I set a field loaded with @Formula annotation as lazy?

I tried

@Formula( "(select abc from x)" )
@LazyCollection(LazyCollectionOption.TRUE)

But didn't work. What is the correct form?

Thanks in advance.
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imp_galo
 Post subject:
PostPosted: Mon Sep 15, 2008 2:33 pm 
Newbie

Joined: Tue Mar 18, 2008 12:34 pm
Posts: 6
I fould a partial answer on http://forums.hibernate.org/viewtopic.php?p=2301129.
But didn't find more info about build time enhancement. Anyone?
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arjunlall
 Post subject: Same problem here
PostPosted: Thu Sep 25, 2008 6:19 pm 
Newbie

Joined: Thu Sep 25, 2008 6:10 pm
Posts: 4
I found this: http://www.hibernate.org/hib_docs/refer ... mance.html

The very last section 19.1.7. seems to be what we need.

I put the ant task in my build script after the compile section and everything builds fine, but the collections are still not lazy.

I am using the following in my bean:
Code:
@Formula("(SELECT COUNT(u.user_id) FROM users u WHERE  u.X > X)")
@Basic(fetch=FetchType.LAZY)
protected Integer newVar;


I am using Netbeans to manage my ant building and put the following into my build-impl.xml file
Code:
        <target name="instrument" depends="compile">
       <taskdef name="instrument" classname="org.hibernate.tool.instrument.InstrumentTask">
           <classpath path="${build.generated.dir}/lib"/>
           <classpath path="${build.classes.dir}"/>
           <classpath refid="lib.class.path"/>
       </taskdef>

       <instrument verbose="true">
           <fileset dir="${build.generated.dir}/classes/com/XXX/beans">
               <include name="*.class"/>
           </fileset>
       </instrument>
   </target>
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arjunlall
 Post subject:
PostPosted: Thu Sep 25, 2008 7:13 pm 
Newbie

Joined: Thu Sep 25, 2008 6:10 pm
Posts: 4
Still havent had any luck getting this to work.

I tried the Ant code in the Hibernate book, but that didn't work either.
Code:
<target name="instrument" depends="compile">
       <taskdef name="instrument"
                classname="org.hibernate.tool.instrument.cglib.InstrumentTask"
                classpathref="${build.classes.dir}"/>
       <instrument verbose="true">
           <fileset dir="${build.generated.dir}/classes/com/XXX/beans/">
               <include name="*.class"/>
           </fileset>
       </instrument>
   </target>



The book mentioned hibernate proxies are better than interception in most cases. Does anyone know if its possible to use a proxy for a @Formula mapping?
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arjunlall
 Post subject:
PostPosted: Mon Sep 29, 2008 7:01 pm 
Newbie

Joined: Thu Sep 25, 2008 6:10 pm
Posts: 4
Finally got it working, although now compiles take forever.

Here is what I put in my build.xml


Code:
<path id="lib-jar">
            <fileset dir="build/web/WEB-INF/lib/">
                <include name="*.jar"/>
            </fileset>
        </path>
   
        <target name="-pre-dist" depends="compile">
       <taskdef name="instrument" classname="org.hibernate.tool.instrument.cglib.InstrumentTask">
                <classpath>
                    <path refid="lib-jar"/>
                </classpath>     
       </taskdef>           
       <instrument verbose="true">
           <fileset dir="${build.web.dir}/WEB-INF/classes/com/X/beans/">
               <include name="A.class"/>
                    <include name="B.class"/>
                    <include name="C.class"/>
           </fileset>
       </instrument>
   </target>

[/code]
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arjunlall
 Post subject:
PostPosted: Mon Sep 29, 2008 7:02 pm 
Newbie

Joined: Thu Sep 25, 2008 6:10 pm
Posts: 4
Finally got it working, although now compiles take forever.

Here is what I put in my build.xml


Code:
<path id="lib-jar">
            <fileset dir="build/web/WEB-INF/lib/">
                <include name="*.jar"/>
            </fileset>
        </path>
   
        <target name="-pre-dist" depends="compile">
       <taskdef name="instrument" classname="org.hibernate.tool.instrument.cglib.InstrumentTask">
                <classpath>
                    <path refid="lib-jar"/>
                </classpath>     
       </taskdef>           
       <instrument verbose="true">
           <fileset dir="${build.web.dir}/WEB-INF/classes/com/X/beans/">
               <include name="A.class"/>
                    <include name="B.class"/>
                    <include name="C.class"/>
           </fileset>
       </instrument>
   </target>
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