5
मैं आलसी प्रारंभिक इकाई ProductUnits पढ़ने की कोशिश कर रहा हूं जो एक सतत सेट है, और इसके लिए एक नया सत्र खोला गया है।जेनेरिक जेडीबीसीएक्सप्शन: एक इकाई लोड नहीं कर सका
Session session = HibernateUtil.getSessionFactory().openSession();
session.update(stock.getProduct());
List<ProductUnits> units = new ArrayList<ProductUnits>(stock.getProduct().getUnits());
समस्या रन टाइम यह अपवाद
org.hibernate.exception.GenericJDBCException: could not load an entity: [hibernate.tables.plain.Product#1]
फेंकता के दौरान होता है, लेकिन जब कदम डिबग द्वारा एक कदम कर यह बिल्कुल ठीक चलाता है। ऐसा लगता है कि session.update कुछ समय लगता है या मैं कुछ याद आ रही है है
अपवाद ढेर
Exception in thread "AWT-EventQueue-0" org.hibernate.exception.GenericJDBCException: could not load an entity: [hibernate.tables.plain.Product#2]
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1895)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:71)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:65)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3072)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:434)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:415)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:165)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:121)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:905)
at org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:863)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:95)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:140)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:190)
at hibernate.tables.plain.Product_$$_javassist_15.getUnits(Product_$$_javassist_15.java)
at bill.mainBill.InputProductsPanel.computeStockAvailablity(InputProductsPanel.java:278)
at bill.mainBill.InputProductsPanel.findStock(InputProductsPanel.java:242)
at bill.mainBill.ProductDetailPanel.setStats(ProductDetailPanel.java:315)
at bill.mainBill.ProductDetailPanel$3.focusLost(ProductDetailPanel.java:187)
at java.awt.AWTEventMulticaster.focusLost(Unknown Source)
at java.awt.Component.processFocusEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.sql.SQLException: Invalid value for getInt() - 'N'
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2727)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2815)
at org.hibernate.type.IntegerType.get(IntegerType.java:51)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:184)
at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:173)
at org.hibernate.type.AbstractType.hydrate(AbstractType.java:105)
at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2124)
at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1404)
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1332)
at org.hibernate.loader.Loader.getRow(Loader.java:1230)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:603)
at org.hibernate.loader.Loader.doQuery(Loader.java:724)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1881)
... 48 more
तो मानचित्रण फ़ाइल के रूप में
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Apr 3, 2012 1:21:15 PM by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="hibernate.tables.plain.ProductUnits" table="PRODUCT_UNITS">
<composite-id mapped="false" unsaved-value="undefined">
<key-many-to-one class="hibernate.tables.plain.Product"
column="Product_ID" name="product"/>
<key-many-to-one class="hibernate.tables.plain.Unit" column="Unit_ID" name="unit"/>
</composite-id>
<property generated="never" lazy="false" name="basePrice" type="java.lang.Double">
<column name="BASE_PRICE"/>
</property>
</class>
</hibernate-mapping>
और उत्पाद मानचित्रण इस प्रकार है
<class name="hibernate.tables.plain.Product" table="PRODUCT">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="NAME" />
</property>
<property name="recommendedHolding" type="java.lang.Double">
<column name="RECOMMENDED_HOLDING" />
</property>
<set name="units" table="Product_Units" inverse="false" lazy="true">
<key>
<column name="Product_ID" />
</key>
<one-to-many class="hibernate.tables.plain.ProductUnits" />
</set>
<property name="active" type="java.lang.Character">
<column name="ACTIVE" />
</property>
</class>
यह मदद मिलेगी अगर आप हमें पूरा अपवाद स्टैकट्रेस –
से पता चला है और, यह भी प्रदान करें 'उत्पाद' के लिए हाइबरनेट मैपिंग। – nobeh