[b]Hibernate version:[/b] 3.0.5
Hello Hibernate Experts!
I have the following heirarchy (adapted from AppFuse) and have been struggling with the mapping file(s). My goal is a MinimalUser-centric system with decorators (E.G. Model is a decorator), as well as "aspects" (E.G. PictureSet), and I don't want repeated data in the DB (I have soutions that violate these preferences, but I am looking for something better). Any advice is appreciated.
[code]public interface MinimalUser extends BaseInterface {
public Long getId();
public void setId(Long id);
public String getUsername();
public void setUsername(String username);
public String getPassword();
public void setPassword(String password);
public Integer getVersion();
public void setVersion(Integer version);
// more (irrelevant) getter/setters
}
public interface DerivedUser extends MinimalUser {
// marker for derived users - like serializable
}
public interface PictureSet {
public Long getId();
public void setId(Long id);
public Set getPictures();
public void setPictures(Set pictures);
}
public interface PictureSetDerivedUser extends DerivedUser, PictureSet { }
public interface Model extends DerivedUser, PictureSet { }
public class MinimalUserImpl implements MinimalUser {
// Implemented as expected from MinimalUser
}
public abstract class AbstractDerivedUser implements DerivedUser {
protected Long id;
protected Integer version;
protected MinimalUser minimalUser;
protected final Log log = LogFactory.getLog(getClass());
// getters and setters dispatch to minimalUser
// except for id and version
}
public abstract class AbstractPictureSetDerivedUser extends AbstractDerivedUser implements PictureSetDerivedUser {
protected Set pictures;
public Set getPictures() {
return pictures;
}
public void setPictures(Set pictures) {
this.pictures = pictures;
}
}
public class ModelImpl extends AbstractPictureSetDerivedUser implements Model { }
[/code]
My current mapping file is:
[code]<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping default-cascade="all,delete-orphan"
>
<class
name="com.bayareamodels.model.MinimalUser" abstract="true"
>
<id
name="id"
column="id"
type="java.lang.Long"
unsaved-value="null"
>
<generator class="native"/>
</id>
<discriminator column="subclass"/>
<version
name="version"
column="version"
type="java.lang.Integer"
/>
<property
name="username"
type="java.lang.String"
update="true"
insert="true"
column="username"
length="20"
not-null="true"
unique="true"
/>
<property
name="password"
type="java.lang.String"
update="true"
insert="true"
column="password"
length="20"
not-null="true"
/>
<property
name="firstName"
type="java.lang.String"
update="true"
insert="true"
column="firstName"
length="20"
not-null="true"
/>
<property
name="lastName"
type="java.lang.String"
update="true"
insert="true"
column="lastName"
length="20"
not-null="true"
/>
<property
name="email"
type="java.lang.String"
update="true"
insert="true"
column="email"
length="20"
not-null="true"
unique="true"
/>
<property
name="passwordHint"
type="java.lang.String"
update="true"
insert="true"
column="passwordHint"
length="50"
not-null="false"
/>
<set
name="roles"
lazy="false"
cascade="none"
sort="unsorted"
>
<key
column="userId"
>
</key>
<many-to-many
class="com.bayareamodels.model.Role"
column="roleName"
outer-join="auto"
/>
</set>
<property
name="enabled"
type="java.lang.Boolean"
update="true"
insert="true"
column="enabled"
/>
<subclass name="com.bayareamodels.model.impl.AbstractDerivedUser" abstract="true">
<join table="AbstractDerivedUser">
<key column="id"/>
<many-to-one name="minimalUser" column="decoratedMinimalUser" class="com.bayareamodels.model.MinimalUser" not-null="true"/>
</join>
<subclass name="com.bayareamodels.model.impl.AbstractPictureSetDerivedUser" abstract="true">
<join table="AbstractPictureSetDerivedUser">
<key column="id"/>
<set
name="pictures"
lazy="false"
cascade="none"
sort="unsorted"
>
<key
column="userId"
>
</key>
<many-to-many
column="pictureId"
class="com.bayareamodels.model.Picture"
/>
</set>
</join>
<subclass name="com.bayareamodels.model.impl.ModelImpl">
<join table="ModelImpl">
<key column="id"/>
</join>
</subclass>
</subclass>
</subclass>
<subclass name="com.bayareamodels.model.impl.MinimalUserImpl">
</subclass>
</class>
</hibernate-mapping>[/code]
However, the picture set nested in the AbstractPictureSetDerivedUser subclass join doesn't follow the dtd.
Thanks,
Chris[code][/code]
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