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Hibernate version:
3.1.2

Hello,

When i query any object by an id that does not exist I do get back a proxy object. On that object I cannot call methods because the object does not exist in the database. I dont know how to handle this since object==null returns false but when i want do something with the object my application crashes saying that the object cannot be found. Why dont I get back a null object?

regards,
Dennis

Hi,
Can you post the code, HBM files and the exact exception you are getting? That might help us. :-)

the code:

Criteria criteria = getCriteria();
criteria.add(Restrictions.eq("id", new Long(id)));
Object uniqueResult = criteria.uniqueResult();

the mapping:

<hibernate-mapping>
<class
name="com.xxiro.persistance.domain.impl.User"
table="user"
dynamic-update="false"
dynamic-insert="false"
>

<id
name="id"
column="ID"
type="long"
unsaved-value="null"
>
<generator class="identity">
</generator>
</id>

<version
name="version"
type="integer"
column="VERSION"
/>

<set
name="tags"
lazy="true"
inverse="true"
cascade="all-delete-orphan"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.Tag"
/>
</set>

<set
name="userHistory"
lazy="true"
inverse="true"
cascade="all-delete-orphan"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.UserHistory"
/>
</set>

<set
name="serviceUsers"
lazy="true"
inverse="true"
cascade="delete"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.ServiceUser"
/>
</set>

<set
name="cardOrders"
lazy="true"
inverse="true"
cascade="all-delete-orphan"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.CardOrder"
/>
</set>

<set
name="officeUsers"
lazy="true"
inverse="true"
cascade="delete"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.OfficeUser"
/>
</set>

<set
name="timeTableUsers"
lazy="true"
inverse="false"
cascade="none"
sort="unsorted"
>

<key
column="USER_ID"
/>

<one-to-many
class="com.xxiro.persistance.domain.impl.TimetableUser"
/>
</set>

<property
name="address"
type="java.lang.String"
update="true"
insert="true"
column="ADDRESS"
length="128"
not-null="true"
/>

<property
name="addressNumber"
type="java.lang.Integer"
update="true"
insert="true"
column="ADDRESS_NUMBER"
not-null="true"
/>

<property
name="addressNumberAdd"
type="java.lang.String"
update="true"
insert="true"
column="ADDRESS_NUMBER_ADD"
length="16"
not-null="false"
/>

<property
name="postalcode"
type="java.lang.String"
update="true"
insert="true"
column="POSTAL_CODE"
length="6"
not-null="true"
/>

<property
name="city"
type="java.lang.String"
update="true"
insert="true"
column="CITY"
length="64"
not-null="true"
/>

<property
name="country"
type="java.lang.String"
update="true"
insert="true"
column="COUNTRY"
length="64"
not-null="true"
/>

<property
name="blocked"
type="boolean"
update="true"
insert="true"
column="BLOCKED"
/>

<property
name="state"
type="short"
update="true"
insert="true"
column="STATE"
/>

<property
name="initials"
type="java.lang.String"
update="true"
insert="true"
column="INITIALS"
length="16"
not-null="true"
/>

<property
name="firstName"
type="java.lang.String"
update="true"
insert="true"
column="FIRST_NAME"
length="32"
not-null="true"
/>

<property
name="lastName"
type="java.lang.String"
update="true"
insert="true"
column="LAST_NAME"
length="64"
not-null="true"
/>

<property
name="callName"
type="java.lang.String"
update="true"
insert="true"
column="CALL_NAME"
length="64"
not-null="false"
/>

<property
name="prefix"
type="java.lang.String"
update="true"
insert="true"
column="PREFIX"
length="16"
not-null="false"
/>

<property
name="gender"
type="java.lang.Character"
update="true"
insert="true"
column="GENDER"
not-null="true"
/>

<property
name="dateOfBirth"
type="java.util.Date"
update="true"
insert="true"
column="DATE_OF_BIRTH"
not-null="true"
/>

<property
name="nationality"
type="java.lang.String"
update="true"
insert="true"
column="NATIONALITY"
length="64"
not-null="false"
/>

<property
name="email"
type="java.lang.String"
update="true"
insert="true"
column="EMAIL"
length="64"
not-null="false"
unique="true"
/>

<property
name="username"
type="java.lang.String"
update="true"
insert="true"
column="USERNAME"
length="64"
not-null="true"
unique="true"
/>

<property
name="password"
type="java.lang.String"
update="true"
insert="true"
column="PASSWORD"
length="64"
not-null="true"
unique="false"
/>

<property
name="pincode"
type="java.lang.String"
update="true"
insert="true"
column="PINCODE"
length="64"
not-null="true"
unique="false"
/>

<property
name="mobilePhone"
type="java.lang.String"
update="true"
insert="true"
column="MOBILE_PHONE"
length="16"
not-null="false"
/>

<property
name="phone"
type="java.lang.String"
update="true"
insert="true"
column="PHONE"
length="16"
not-null="false"
/>

<property
name="fax"
type="java.lang.String"
update="true"
insert="true"
column="FAX"
length="16"
not-null="false"
/>

<property
name="remark"
type="java.lang.String"
update="true"
insert="true"
column="REMARK"
not-null="false"
/>

<property
name="bankAccount"
type="java.lang.String"
update="true"
insert="true"
column="BANK_ACCOUNT"
length="30"
not-null="false"
/>

<property
name="payMethod"
type="java.lang.Integer"
update="true"
insert="true"
column="PAY_METHOD"
not-null="false"
/>

<property
name="photoLastUpdated"
type="java.util.Date"
update="true"
insert="true"
column="PHOTO_LAST_UPDATED"
not-null="false"
/>
</class>

The exception :

org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.xxiro.persistance.domain.impl.Card#8658768768768]

am i the only one that ever got this?

Just found out in another post that i use load instead of get, that is the reason an object is returned while it doesn't exist.