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From robert burrell donkin <robertburrelldon...@blueyonder.co.uk>
Subject Re: [betwixt] mapID Problems
Date Tue, 17 Aug 2004 21:15:23 GMT
hi Birgit

though you can mix digester rules with betwixt, this is an advanced  
topic. i'd suggest that you'd be better letting betwixt do the whole of  
your mapping initially.

if you want to vary your mapping of beans into elements, i'd suggest  
reading up on dot betwixt files.

- robert

On 17 Aug 2004, at 10:13, Birgit Linner wrote:

> Hi everybody!
>
> I`m new to betwixt and want to use it to dump and import our database
> tables.
> Dumping is ok, altough I have some questions, too.
> The problem is, that every reference to other objects is null when I  
> read
> the XML file.
> ( I have defined:  
> beanReader.getBindingConfiguration().setMapIDs(true); )
>
>
>
> I have the following structure in the XML File:
>
>
> ----------------------- dump.xml ----------------------------------
> <ArrayList>
> 	<ArrayList>
> 		<Person id="1"..... />
> 		...
> 	</ArrayList>
> 	...
> 	<ArrayList>
> 		<Projekt id="12"...>
>         		<manager idref="13"/>   --> Reference to Person
>      		</Projekt>
> 	</ArrayList>
> ---------------------------------------------------------------------
>
>
>
> I am reading the XML file with this Reader (btw: I`m also new to  
> Digester
> and tried a bit to get the ArrayList structure out of the file, I got  
> no
> result when only using beanReader.registerBeanClass(...) ):
>
>
>
> -------------------- Dumper.java ------------------------------------
> StringReader xmlReader = new StringReader("dump.xml");
> BeanReader beanReader = new BeanReader();
> beanReader.getXMLIntrospector().setWrapCollectionsInElement(false);
> beanReader.getXMLIntrospector().setAttributesForPrimitives(true);
> beanReader.getBindingConfiguration().setMapIDs(true);
> beanReader.registerBeanClass("ArrayList", ArrayList.class);
> beanReader.addObjectCreate("ArrayList/ArrayList", ArrayList.class);
> beanReader.addSetNext("ArrayList/ArrayList", "add");
> beanReader.registerBeanClass("ArrayList/ArrayList/Person",  
> Person.class);
> beanReader.addSetNext("ArrayList/ArrayList/Person", "add");
> beanReader.registerBeanClass("ArrayList/ArrayList/Role", Role.class);
> beanReader.addSetNext("ArrayList/ArrayList/Role", "add");
> beanReader.registerBeanClass("ArrayList/ArrayList/Arbeitszeit",
> Arbeitszeit.class);
> beanReader.addSetNext("ArrayList/ArrayList/Arbeitszeit", "add");
> beanReader.registerBeanClass("ArrayList/ArrayList/Projekt",  
> Projekt.class);
> beanReader.addSetNext("ArrayList/ArrayList/Projekt", "add");
> Object result = beanReader.parse(new File("dump.xml"));
> ----------------------------------------------------------------------- 
> -
>
>
> With this configuration I get an ArrayList with ArrayLists.. and so on,
> but - how mentioned above - the idref is null:
>
>
> ---------------------- OUTPUT -----------------------------------------
> Projekt:
>   id     ="0"
>   manager=null
>   name   ="Projekt1"
> -----------------------------------------------------------------------
>
> Is there anything I forgot? Or am I doing something wrong? I`d really
> appreciate a tip!
>
>
> Another question about wrinting a bean to XML:
> I`d like to rename my ArrayLists (only for better reading), e.g. the
> root-ArrayList to "Data" and the inner ones to "persons", "project"  
> etc.
> Is this possible? I tried, but always get empty tags (also with using
> class-property in element-tag). But this is only "nice to have"...
>
> Thanks in advance!
>
> Have a nice day!
>
> Birgit
>
>
>
>
>
>
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>


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