Cannot update or add to a collection using lazy=true

[theone]

I can add, update and delete a record in the User table but I cannot add or update to the collection that is related to that user record.

When I delete a user all the roles related to that user get deleted too (which is what I expected it to do).

Yet, why can I not add or update the collection (roles) of a user?

The relationship of User to Role table is one-to-many and is set to lazy=true.

Can someone help? I just want to be able to add a new user and update an existing user such that the roles will get added or updated too.

Thank you

[irbouho]

theone,

could you provide a small and runnable code so I can reproduce and debug this issue? You can send it to me off-list if you like.

[theone]

Thought I would post the related files here...
again, my problem is i cannot add or update the collections (which is members in this case) when a user is added or modified.
deleting a user is no problem all related members got deleted as they should. What could be the problem? Can somebody help?

<hibernate-mapping>
<class
name="com.ibm.cruser.model.User" table="users">

<id name="id" type="java.lang.Integer" column="id" unsaved-value="0" >
<generator class="increment" />
</id>

<property name="username" type="java.lang.String" column="username" not-null="true" length="30" >
</property>
<property name="password" type="java.lang.String" column="password" not-null="true" length="30">
</property>

other properties....

<!-- Associations -->

<!-- bi-directional one-to-many association to Member -->
<set
name="members" lazy="true" inverse="true" cascade="save-update">
<key>
<column name="userid" />
</key>
<one-to-many
class="com.ibm.cruser.model.Member" />
</set>

</class>
</hibernate-mapping>


<hibernate-mapping>
<class
name="com.ibm.cruser.model.Group"
table="groups"
>

<id
name="id"
type="java.lang.Integer"
column="id"
>
<generator class="assigned" />
</id>

<property
name="groupname"
type="java.lang.String"
column="groupname"
not-null="true"
length="30"
>
</property>

<!-- Associations -->

<!-- bi-directional one-to-many association to Member -->
<set
name="members"
lazy="true"
inverse="true"
cascade="all"
>
<key>
<column name="groupid" />
</key>
<one-to-many
class="com.ibm.cruser.model.Member"
/>
</set>

</class>
</hibernate-mapping>

<hibernate-mapping>
<class
name="com.ibm.cruser.model.Member"
table="member"
>

<composite-id name="comp_id" class="com.ibm.cruser.model.MemberPK">
<meta attribute="field-description" inherit="false">
@hibernate.id
generator-class="assigned"
</meta>
<key-property
name="userid"
column="userid"
type="java.lang.Integer"
length="4"
>
<meta attribute="field-description">
@hibernate.property
column="userid"
length="4"
</meta>
</key-property>
<key-property
name="groupid"
column="groupid"
type="java.lang.Integer"
length="4"
>
<meta attribute="field-description">
@hibernate.property
column="groupid"
length="4"
</meta>
</key-property>
</composite-id>


<!-- Associations -->
<!-- derived association(s) for compound key -->
<!-- bi-directional many-to-one association to Group -->
<many-to-one
name="group"
class="com.ibm.cruser.model.Group"
update="false"
insert="false"
>
<meta attribute="field-description">
@hibernate.many-to-one
update="false"
insert="false"
</meta>
<meta attribute="field-description">
@hibernate.column
name="groupid"
</meta>
<column name="groupid" />
</many-to-one>

<!-- bi-directional many-to-one association to User -->
<many-to-one
name="user"
class="com.ibm.cruser.model.User"
update="false"
insert="false"
>
<meta attribute="field-description">
@hibernate.many-to-one
update="false"
insert="false"
</meta>
<meta attribute="field-description">
@hibernate.column
name="userid"
</meta>
<column name="userid" />
</many-to-one>

<!-- end of derived association(s) -->


</class>
</hibernate-mapping>

public class User implements Serializable {

/** identifier field */
private Integer id;

/** persistent field */
private String username;

/** persistent field */
private String password;

With other properties, getters and setters, constructors...

}

public class Group implements Serializable {

/** identifier field */
private Integer id;

/** persistent field */
private String groupname;

/** persistent field */
private Set members;

With getters, setters and constructors
}

public class Member implements Serializable {

/** identifier field */
private com.ibm.cruser.model.MemberPK comp_id;

/** nullable persistent field */
private com.ibm.cruser.model.Group group;

/** nullable persistent field */
private com.ibm.cruser.model.User user;

/** full constructor */
public Member(com.ibm.cruser.model.MemberPK comp_id, com.ibm.cruser.model.Group group, com.ibm.cruser.model.User user) {
this.comp_id = comp_id;
this.group = group;
this.user = user;
}

/** default constructor */
public Member() {
}

/** minimal constructor */
public Member(com.ibm.cruser.model.MemberPK comp_id) {
this.comp_id = comp_id;
}

/**
* @hibernate.id
* generator-class="assigned"
*
*/
public com.ibm.cruser.model.MemberPK getComp_id() {
return this.comp_id;
}

public void setComp_id(com.ibm.cruser.model.MemberPK comp_id) {
this.comp_id = comp_id;
}

/**
* @hibernate.many-to-one
* update="false"
* insert="false"
*
* @hibernate.column
* name="groupid"
*
*/
public com.ibm.cruser.model.Group getGroup() {
return this.group;
}

public void setGroup(com.ibm.cruser.model.Group group) {
this.group = group;
}

/**
* @hibernate.many-to-one
* update="false"
* insert="false"
*
* @hibernate.column
* name="userid"
*
*/
public com.ibm.cruser.model.User getUser() {
return this.user;
}

public void setUser(com.ibm.cruser.model.User user) {
this.user = user;
}

public String toString() {
return new ToStringBuilder(this)
.append("comp_id", getComp_id())
.toString();
}

public boolean equals(Object other) {
if ( !(other instanceof Member) ) return false;
Member castOther = (Member) other;
return new EqualsBuilder()
.append(this.getComp_id(), castOther.getComp_id())
.isEquals();
}

public int hashCode() {
return new HashCodeBuilder()
.append(getComp_id())
.toHashCode();
}

}

public class MemberPK implements Serializable {

/** identifier field */
private Integer userid;

/** identifier field */
private Integer groupid;

/** full constructor */
public MemberPK(Integer userid, Integer groupid) {
this.userid = userid;
this.groupid = groupid;
}

/** default constructor */
public MemberPK() {
}

/**
* @hibernate.property
* column="userid"
* length="4"
*
*/
public Integer getUserid() {
return this.userid;
}

public void setUserid(Integer userid) {
this.userid = userid;
}

/**
* @hibernate.property
* column="groupid"
* length="4"
*
*/
public Integer getGroupid() {
return this.groupid;
}

public void setGroupid(Integer groupid) {
this.groupid = groupid;
}

public String toString() {
return new ToStringBuilder(this)
.append("userid", getUserid())
.append("groupid", getGroupid())
.toString();
}

public boolean equals(Object other) {
if ( !(other instanceof MemberPK) ) return false;
MemberPK castOther = (MemberPK) other;
return new EqualsBuilder()
.append(this.getUserid(), castOther.getUserid())
.append(this.getGroupid(), castOther.getGroupid())
.isEquals();
}

public int hashCode() {
return new HashCodeBuilder()
.append(getUserid())
.append(getGroupid())
.toHashCode();
}

}

[bullgod]

Hi theone,

i have the same problem. My code is very similiar:

http://forum.springframework.org/showthread.php?t=10328

In my case this only works when i use OpenSessionInView filter. Did you try that? What i don't understand is that at the point when i call save/update the view is far from being involved. I don't get it. But try OpenSessionInView filter if you're running a webapp and check if it works then.

-andi