Please find attached document for HOW_TO section. I did use as example page http://www.castor.org/how-to-wrap-a-collection-with-a-wrapper-element.html
HTM Table starts from Castor image regards. Antoni -----Original Message----- From: Werner Guttmann [mailto:[EMAIL PROTECTED] Sent: 11. huhtikuuta 2008 13:01 To: [email protected] Subject: Re: [castor-user] How to use hierarchical objects with wrapper Alatalo, Antoni wrote: > All right it works. I did misundestund about container element. After > removing it all works fine. > > Thank you very much. > > As you see the result is very clean. Only two files and POJO does not > have any dependencies on Castor. Very nice. > > I think you can place this example to the Cator site to provide simple > Hierarchy functionality. Would you mind - given the time I have spent on helping you - coming up with a well-structured HOW-TO document for the XML part of Castor ? Werner > > > Thank you very much Antoni > > -----Original Message----- From: Werner Guttmann > [mailto:[EMAIL PROTECTED] Sent: 11. huhtikuuta 2008 12:30 To: > [email protected] Subject: Re: [castor-user] How to use > hierarchical objects with wrapper > > Using your test case (the one supplied below), I get the following > output after marshalling: > > <foo:foo xmlns:foo="http://example.com/foo"; name="foo"> <foo:children> > <foo:foo name="foo1"/> <foo:foo name="foo2"/> </foo:children> > </foo:foo> > > Which - as far as I can tell - is what you wanted, correct ? > > Werner > > Alatalo, Antoni wrote: >> Hi, Thank you for reply. Still doesn't work MAPPING: <?xml >> version="1.0"?> <!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping >> DTD Version 1.0//EN" "http://castor.org/mapping.dtd";> <mapping> >> <class name="com.example.Foo" auto-complete="false"> <map-to >> xml="foo" ns-uri="http://example.com/foo"; ns-prefix="foo" /> <field >> name="name" type="java.lang.String"> <bind-xml name="name" >> node="attribute" /> </field> <field name="children" >> collection="collection" type="com.example.Foo" container="false"> >> <bind-xml name="foo" location="children"/> </field> </class> >> </mapping> >> >> Gets the output <foo:foo xmlns:foo="http://example.com/foo"; >> name="foo"> <foo> <foo:foo name="foo1"> <foo /> </foo:foo> <foo:foo >> name="foo2"> <foo /> </foo:foo> </foo> </foo:foo> >> >> And should be: <foo:foo name="foo" >> xmlns:foo="http://example.com/foo";> <foo:children> <foo:foo >> name="foo1" /> <foo:foo name="foo2" /> </foo:children> </foo:foo> >> >> The location attribute changes children name to foo, nothing else. >> Still name of element is without namespace prefix. Another empty >> <children/> (or with location <foo/>) element exists. How it can be >> removed? >> >> >> Thank you. Antoni >> >> -----Original Message----- From: Werner Guttmann >> [mailto:[EMAIL PROTECTED] Sent: 11. huhtikuuta 2008 11:41 >> To: [email protected] Subject: Re: [castor-user] How to use >> hierarchical objects with wrapper >> >> Actually, please ignore my last comment re: the use of the >> 'container' attribute. It won't work in your case, and switching to >> the use of the location attribute is the correct way forward. >> >> Regards Werner >> >> Werner Guttmann wrote: >>> Hi Antoni, >>> >>> looking at the missing namespace prefix on the children element, I >>> changed the mapping as follows (and introduced a location attribute >>> on the <bind-xml> definition for the children field mapping. That >>> did it for me. >>> >>> <mapping> <class name="xml.children.Foo" auto-complete="false"> >>> <map-to xml="foo" ns-uri="http://example.com/foo"; ns-prefix="foo" >>> /> <field name="name" type="java.lang.String"> <bind-xml name="name" >>> node="attribute" /> </field> <field name="children" >>> collection="collection" type="xml.children.Foo"> <bind-xml >>> name="foo" location="children" /> </field> </class> </mapping> >>> >>> I will have another look at the use of the container attribute, as >>> it looks like a bug to me .... but I think that the solution shown >>> should satisfy you. >>> >>> Werner >>> >>> Alatalo, Antoni wrote: >>>> To continue this conversation question once again: Is there a way >>>> to have xsd and POJO like I have (or yours modified xsd) and get >>>> the ouput I expect by using castors mapping file? 1. >>>> children with namespace prefix 2. empty children are not marhaled? >>>> >>>> Thank you a lot for your requests Antoni >>>> >>>> -----Original Message----- From: Alatalo, Antoni >>>> [mailto:[EMAIL PROTECTED] Sent: 10. huhtikuuta 2008 >>>> 13:49 To: [email protected] Subject: RE: [castor-user] How >>>> to use hierarchical objects with wrapper >>>> >>>> Hi, I've did generate code and it's not right way for me. >>>> Enstead of one domain class I get six classes. From simple 20 line >>>> class I get something too complex. >>>> >>>> As I mentioned before I want to use same domain structure >>>> independent from the technologies. In the other words no hibernate, >>>> castor or axis should be present in the model. >>>> >>>> Of course here can be three different domain models, one is my own, >>>> second generated by castor, third database layer model. >>>> But it requers mappings between models and is not what we are >>>> looking. >>>> >>>> The ideal is something like castors mapping file. It's a glue >>>> between java class and xsd schema. Only thing is to get it work in >>>> every situation. >>>> >>>> >>>> Regards. Antoni >>>> >>>> -----Original Message----- From: Werner Guttmann >>>> [mailto:[EMAIL PROTECTED] Sent: 10. huhtikuuta 2008 >>>> 13:23 To: [email protected] Subject: Re: [castor-user] How >>>> to use hierarchical objects with wrapper >>>> >>>> Hi, >>>> >>>> there you are: >>>> >>>> **** XML schema: >>>> >>>> <?xml version="1.0" encoding="UTF-8"?> <schema >>>> xmlns="http://www.w3.org/2001/XMLSchema"; >>>> targetNamespace="http://example.com/foo"; >>>> xmlns:tns="http://example.com/foo"; >>>> elementFormDefault="qualified"> <complexType name="foo"> <sequence> >>>> <element name="children" minOccurs="0"> <complexType> <sequence> >>>> <element name="foo" type="tns:foo" >>>> >>>> maxOccurs="unbounded"> </element> </sequence> </complexType> >>>> </element> </sequence> <attribute name="name"></attribute> >>>> </complexType> <!-- <element name="foo" >>>> type="tns:fooType"></element> --> </schema> >>>> >>>> *** builder properties: >>>> >>>> # Selects the Java class mapping for <xsd:element>'s and >>>> <xsd:complexType>'s. # Legal values are 'element' and 'type'. >>>> For 'element' mapping, the source # generator creates a Java class >>>> hierarchy based on elements in the XML Schema. # For 'type' >>>> mapping, the class hierarchy is based on types in the XML Schema. # >>>> Default is 'element'. # >>>> org.exolab.castor.builder.javaclassmapping=type >>>> >>>> Everything else is standard, so please generate the classes >>>> yourself. Please note that I changed the XML schema to meet the >>>> expected XML defined in the test case. >>>> >>>> Regards Werner Guttmannb >>>> >>>> >>>> >>>> Alatalo, Antoni wrote: >>>>> Please, send me schema you modified and class you are generated >>>>> >>>>> Seems that I send you wrong version of xsd. Here is what I'm >>>>> using. Only different is ref <?xml version="1.0" >>>>> encoding="UTF-8"?> <schema >>>>> xmlns="http://www.w3.org/2001/XMLSchema"; >>>>> targetNamespace="http://example.com/foo"; >>>>> xmlns:tns="http://example.com/foo"; >>>>> elementFormDefault="qualified"> <complexType name="fooType"> >>>>> <sequence> <element name="children" minOccurs="0" >>>>> nillable="false"> <complexType> <sequence> <element ref="tns:foo" >>>>> >>>>> maxOccurs="unbounded"> </element> </sequence> </complexType> >>>>> </element> </sequence> <attribute name="name"></attribute> >>>>> </complexType> <element name="foo" >>>>> type="tns:fooType"></element> </schema> >>>>> >>>>> >>>>> Terv. Antoni >>>>> >>>>> -----Original Message----- From: Werner Guttmann >>>>> [mailto:[EMAIL PROTECTED] Sent: 10. huhtikuuta 2008 >>>>> 12:45 To: [email protected] Subject: Re: [castor-user] How >>>>> to use hierarchical objects with wrapper >>>>> >>>>> Just to let you know, after modifying your XML schema slightly, I >>>>> was able to pruduce the desired output as follows just by >>>>> generating classes from the XML schema given, without having to >>>>> write a mapping file. >>>>> >>>>> Regards Werner Committer, Castor >>>>> >>>>> Alatalo, Antoni wrote: >>>>>> Hi, Here is all in nutshell: SCHEMA: <?xml version="1.0" >>>>>> encoding="UTF-8"?> <schema >>>>>> xmlns="http://www.w3.org/2001/XMLSchema"; >>>>>> targetNamespace="http://example.com/foo"; >>>>>> xmlns:tns="http://example.com/foo"; >>>>>> elementFormDefault="qualified"> <complexType name="fooType"> >>>>>> <sequence> <element name="children" >>>>>> minOccurs="0"> <complexType> <sequence> <element name="child" >>>>>> type="tns:fooType" >>>>>> >>>>>> maxOccurs="unbounded"> </element> </sequence> </complexType> >>>>>> </element> </sequence> <attribute name="name"></attribute> >>>>>> </complexType> <element name="foo" >>>>>> type="tns:fooType"></element> </schema> >>>>>> >>>>>> CASTOR <?xml version="1.0"?> <!DOCTYPE mapping PUBLIC >>>>>> "-//EXOLAB/Castor Mapping DTD Version 1.0//EN" >>>>>> "http://castor.org/mapping.dtd";> <mapping> <class >>>>>> name="com.example.Foo" auto-complete="false"> <map-to xml="foo" >>>>>> ns-uri="http://example.com/foo"; ns-prefix="foo" >>>>>> /> <field name="name" type="java.lang.String"> <bind-xml >>>>>> name="name" node="attribute" /> </field> <field name="children" >>>>>> collection="collection" >>>>>> type="com.example.Foo" container="false"> </field> </class> >>>>>> </mapping> >>>>>> >>>>>> BEAN package com.example; import java.util.Collection; >>>>>> >>>>>> public class Foo { private String name; private Collection<Foo> >>>>>> children; >>>>>> >>>>>> public Foo(){} public Foo(String name){ setName(name); } public >>>>>> Collection<Foo> getChildren() { return children; } public void >>>>>> setChildren(Collection<Foo> children) { this.children = children; >>>>>> } public String getName() { return name; } public void >>>>>> setName(String name) { this.name = name; } } >>>>>> >>>>>> >>>>>> TESTCASE: package com.example; >>>>>> >>>>>> import java.io.IOException; import java.io.StringReader; import >>>>>> java.io.StringWriter; import java.util.Collection; import >>>>>> java.util.HashSet; >>>>>> >>>>>> import junit.framework.TestCase; import >>>>>> org.exolab.castor.xml.XMLContext; import >>>>>> org.exolab.castor.mapping.Mapping; import >>>>>> org.exolab.castor.mapping.MappingException; import >>>>>> org.exolab.castor.xml.MarshalException; import >>>>>> org.exolab.castor.xml.Unmarshaller; import >>>>>> org.exolab.castor.xml.Marshaller; import >>>>>> org.exolab.castor.xml.ValidationException; >>>>>> >>>>>> import com.example.Foo; >>>>>> >>>>>> public class CastorFooTest extends TestCase { Mapping mapping = >>>>>> null; XMLContext context = null; public void >>>>>> setUp() throws IOException, MappingException{ mapping = new >>>>>> Mapping(); >>>>>> >>>>>> mapping.loadMapping("src/META-INF/castor/foo-castor.xml"); >>>>>> context = new XMLContext(); context.addMapping(mapping); } public >>>>>> void testMarhallFoo() throws IOException, MappingException, >>>>>> MarshalException, ValidationException{ Marshaller marshaller = >>>>>> context.createMarshaller(); StringWriter writer = new >>>>>> StringWriter(); marshaller.setWriter(writer); >>>>>> marshaller.setMarshalAsDocument(false); >>>>>> marshaller.setMapping(mapping); >>>>>> marshaller.setSuppressNamespaces(false); >>>>>> marshaller.marshal(getFoo()); assertEquals(expected, >>>>>> writer.getBuffer().toString()); } public void >>>>>> testUnMarhallFoo() throws IOException, MappingException, >>>>>> MarshalException, ValidationException{ Unmarshaller unmarshaller >>>>>> = context.createUnmarshaller(); StringReader reader = new >>>>>> StringReader(expected); Foo result = >>>>>> (Foo)unmarshaller.unmarshal(reader); Foo exp = getFoo(); >>>>>> assertEquals(exp.getName(), result.getName()); } private Foo >>>>>> getFoo(){ Foo foo = getFoo(""); Collection<Foo> children = new >>>>>> HashSet<Foo>(); children.add(getFoo("2")); >>>>>> children.add(getFoo("1")); foo.setChildren(children); return foo; >>>>>> } private Foo getFoo(String s){ Foo foo = new >>>>>> Foo("foo".concat(s)); return foo; } private String expected = >>>>>> "<foo:foo xmlns:foo=\"http://example.com/foo\"; >>>>>> name=\"foo\"><foo:children><foo:foo >>>>>> name=\"foo1\"></foo:foo><foo:foo >>>>>> name=\"foo2\"></foo:foo></foo:children></foo:foo>"; } >>>>>> >>>>>> >>>>>> Expected output <?xml version="1.0" encoding="UTF-8"?> <foo:foo >>>>>> name="foo" xmlns:foo="http://example.com/foo";> >>>>>> <foo:children> <foo:foo name="foo1"/> <foo:foo name="foo2"/> >>>>>> </foo:children> </foo:foo> >>>>>> >>>>>> OUTPUT I GET: <?xml version="1.0" encoding="UTF-8"?> <foo:foo >>>>>> name="foo" xmlns:foo="http://example.com/foo";> >>>>>> <children> - ERROR NUMBER 1 <foo:foo name="foo1"> <children /> - >>>>>> ERROR NUMBER 2 </foo:foo> <foo:foo name="foo2"> <children /> - >>>>>> ERROR NUMBER 2 </foo:foo> </children> - ERROR NUMBER 1 </foo:foo> >>>>>> >>>>>> Output I get isn't valid: 1. <children> element must have foo >>>>>> prefix as all others: <foo:children> 2. there must not be empty >>>>>> <children/> element at all >>>>>> >>>>>> Regards. Antoni >>>>>> >>>>>> -----Original Message----- From: Werner Guttmann >>>>>> [mailto:[EMAIL PROTECTED] Sent: 9. huhtikuuta 2008 >>>>>> 15:13 To: [email protected] Subject: Re: >>>>>> [castor-user] How to use hierarchical objects with wrapper >>>>>> >>>>>> >>>>>> >>>>>> Alatalo, Antoni wrote: >>>>>>> Hi, I have Object A that has Collection of Objects A. >>>>>>> Normal hierarchy structure. I got to work it almost well except >>>>>>> two details. The collection is wrapped. It should look like this >>>>>>> Lets name namespace like bar <bar:foo name="1"> <bar:children> >>>>>>> <bar:foo name="2*"*/> <bar:foo name="3"/> </bar:children> >>>>>>> </bar:foo> >>>>>>> >>>>>>> The problem is that chioldren while marhalling doen't get bar >>>>>>> prefix. This is output after marshalling <bar:foo name="1"> >>>>>>> <children> <bar:foo name="2*"*> <children/> </bar:foo> <bar:foo >>>>>>> name="3"> <children/> </bar:foo> </children> </bar:foo> >>>>>>> >>>>>>> How can i configure mapper to use prefix with "children" >>>>>>> wrapper? Without this xml is not valid! >>>>>> What version of Castor are you using ? And what does your mapping >>>>>> for the relevant classes look like ? It looks like you are using >>>>>> the locations attribute on the field mapping for the 'bar' >>>>>> children ? >>>>>> >>>>>>> Teh next thing is empty collection. How can i configure mapper >>>>>>> to exclude empty or null not required values? >>>>>> Can you show us some sample XML that highlights your problem ? It >>>>>> just isn't fully clear to me what the problem is. >>>>>> >>>>>>> Thank you *Antoni Alatalo *Ohjelmistoasiantuntija Kuntatoimiala, >>>>>>> sosiaalitoimi _________________________________________ >>>>>>> >>>>>>> *Logica **- Releasing your potential >>>>>>> >>>>>>> *Karvaamokuja 2 PL 38 00381 Helsinki Vaihde: 010 302 010 >>>>>>> Suora: 040 583 1097 [EMAIL PROTECTED] _www.logica.fi_ >>>>>>> <http://www.logicacmg.fi> WM-datan nimi on nyt *Logica.* >>>>>>> >>>>>>> >>>>>> ----------------------------------------------------------------- >>>>>> - >>>>>> - -- To unsubscribe from this list, please visit: >>>>>> >>>>>> http://xircles.codehaus.org/manage_email >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> ----------------------------------------------------------------- >>>>>> - >>>>>> - -- To unsubscribe from this list, please visit: >>>>>> >>>>>> http://xircles.codehaus.org/manage_email >>>>>> >>>>>> >>>>>> >>>>> ------------------------------------------------------------------ >>>>> - >>>>> - - To unsubscribe from this list, please visit: >>>>> >>>>> http://xircles.codehaus.org/manage_email >>>>> >>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------------ >>>>> - >>>>> - - To unsubscribe from this list, please visit: >>>>> >>>>> http://xircles.codehaus.org/manage_email >>>>> >>>>> >>>>> >>>> ------------------------------------------------------------------- >>>> - >>>> - To unsubscribe from this list, please visit: >>>> >>>> http://xircles.codehaus.org/manage_email >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------- >>>> - >>>> - To unsubscribe from this list, please visit: >>>> >>>> http://xircles.codehaus.org/manage_email >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------- >>>> - >>>> - To unsubscribe from this list, please visit: >>>> >>>> http://xircles.codehaus.org/manage_email >>>> >>>> >>>> >>> -------------------------------------------------------------------- >>> - To unsubscribe from this list, please visit: >>> >>> http://xircles.codehaus.org/manage_email >>> >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe from this list, please visit: >> >> http://xircles.codehaus.org/manage_email >> >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe from this list, please visit: >> >> http://xircles.codehaus.org/manage_email >> >> >> > > > --------------------------------------------------------------------- > To unsubscribe from this list, please visit: > > http://xircles.codehaus.org/manage_email > > > > > --------------------------------------------------------------------- > To unsubscribe from this list, please visit: > > http://xircles.codehaus.org/manage_email > > > --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
How to work with hierarchical structure
Intended Audience
Prerequisites
Basic concept
Java entities
XML schema
Required XML output
Mapping file
Intended Audience
Anyone who wants to work with hierarchical structure.
This document helps people to get familiar with the basic concepts and shows an example.
Prerequisites
None.
Basic concept
When you have a object that contains collection of same objects,
and you want to marchal it to the wrapped container, then use example below.
For example, if you have the
following classes: and you have XML schema like: and you want to have Castor
generate XML which looks like: then you would use a mapping like:Java entities
package com.example;
import java.util.Collection;
public class Foo {
private String name;
private Collection<Foo> children;
public Foo(){}
public Foo(String name){
setName(name);
}
public Collection<Foo> getChildren() {
return children;
}
public void setChildren(Collection<Foo> children) {
this.children = children;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
XML schema
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://example.com/foo"
xmlns:tns="http://example.com/foo" elementFormDefault="qualified">
<complexType name="fooType">
<sequence>
<element name="children" minOccurs="0">
<complexType>
<sequence>
<element name="foo" type="tns:fooType"
maxOccurs="unbounded">
</element>
</sequence>
</complexType>
</element>
</sequence>
<attribute name="name"></attribute>
</complexType>
</schema>
Required XML output
<foo:foo xmlns:foo="http://example.com/foo" name="foo">
<foo:children>
<foo:foo name="foo1" />
<foo:foo name="foo2" />
</foo:children>
</foo:foo>
Mapping file
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd">
<mapping>
<class name="com.example.Foo" auto-complete="false">
<map-to xml="foo" ns-uri="http://example.com/foo"
ns-prefix="foo" />
<field name="name" type="java.lang.String">
<bind-xml name="name" node="attribute" />
</field>
<field name="children" collection="collection"
type="com.example.Foo">
<bind-xml name="foo" location="children"/>
</field>
</class>
</mapping>
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