Здравствуйте, у меня следующая проблема:
Имеется класс:
| Код |
import java.io.Serializable;
import java.util.Calendar;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
/**
* @hibernate.class table="treewdate"
*/
public class TreeWDate implements Serializable {
/**
* identifier field
*/
private Long id;
/**
* nullable persistent field
*/
private String name;
/**
* nullable persistent field
*/
private java.util.Calendar createdate;
/**
* nullable persistent field
*/
private com.ics.kiosk.manager.dbkiosk.mapping.Tree tree;
/**
* full constructor
*/
public TreeWDate(Long id, String name, Calendar createdate, Tree tree) {
this.id = id;
this.name = name;
this.createdate = createdate;
this.tree = tree;
}
public TreeWDate(String name, Calendar createdate, Tree tree) {
this.name = name;
this.createdate = createdate;
this.tree = tree;
}
/**
* default constructor
*/
public TreeWDate() {
}
/**
* minimal constructor
*/
public TreeWDate(Long id) {
this.id = id;
}
/**
* @hibernate.id generator-class="assigned"
* type="java.lang.Long"
* column="id"
*/
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
/**
* @hibernate.property column="name"
* length="20"
*/
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
/**
* @hibernate.property column="createdate"
* length="2147483647"
*/
public Object getCreatedate() {
return this.createdate;
}
public void setCreatedate(Calendar createdate) {
this.createdate = createdate;
}
/**
* @hibernate.many-to-one unique="true"
* @hibernate.column name="treeid"
*/
public com.ics.kiosk.manager.dbkiosk.mapping.Tree getTree() {
return this.tree;
}
public void setTree(com.ics.kiosk.manager.dbkiosk.mapping.Tree tree) {
this.tree = tree;
}
public String toString() {
return new ToStringBuilder(this)
.append("id", getId())
.toString();
}
public boolean equals(Object other) {
if (!(other instanceof TreeWDate)) return false;
TreeWDate castOther = (TreeWDate) other;
return new EqualsBuilder()
.append(this.getId(), castOther.getId())
.isEquals();
}
public int hashCode() {
return new HashCodeBuilder()
.append(getId())
.toHashCode();
}
}
|
Имеется файл маппинга:
| Код |
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
<!--
Created by the Middlegen Hibernate plugin 2.1
http://boss.bekk.no/boss/middlegen/
http://www.hibernate.org/
-->
<class
name="com.ics.kiosk.manager.dbkiosk.mapping.TreeWDate"
table="treewdate"
>
<meta attribute="class-description" inherit="false">
@hibernate.class
table="treewdate"
</meta>
<id
name="id"
type="java.lang.Long"
column="id"
>
<meta attribute="field-description">
@hibernate.id
generator-class="assigned"
type="java.lang.Long"
column="id"
</meta>
<generator class="native" />
</id>
<property
name="name"
type="java.lang.String"
column="name"
length="20"
>
<meta attribute="field-description">
@hibernate.property
column="name"
length="20"
</meta>
</property>
<property
name="createdate"
type="java.util.Calendar"
column="createdate"
length="2147483647"
>
<meta attribute="field-description">
@hibernate.property
column="createdate"
length="2147483647"
</meta>
</property>
<!-- Associations -->
<!-- bi-directional one-to-one association to Tree -->
<many-to-one
name="tree"
class="com.ics.kiosk.manager.dbkiosk.mapping.Tree"
unique="true"
>
<meta attribute="field-description">
@hibernate.many-to-one
unique="true"
@hibernate.column name="treeid"
</meta>
<column name="treeid" />
</many-to-one>
</class>
</hibernate-mapping>
|
Когда выполняешь запроса вида: List list=session.createQuery("from TreeWDate").list();
объекты Tree формируются пустыми и с Exception' ом :
Method threw 'org.hibernate.LazyInitializationException' exception.Failed to evaluate toString for this object;
Подскажите пожалуйста, что делать? или каким путем идти? |