Essay Center: What could be the cause of this Error.Am trying to insert data using Java persistence Api.

run:

[EL Info]: 2013-06-10 03:58:00.961--ServerSession(116252)--EclipseLink, version: Eclipse Persistence Services - 2.3.2.v20111125-r10461

[EL Severe]: 2013-06-10 03:58:02.638--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

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Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf]. Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Exception in thread "AWT-EventQueue-0" javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Runtime Exceptions:

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Descriptor Exceptions:

[EL Severe]: 2013-06-10 03:58:02.653--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

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Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf]. Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf]. Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

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at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:517)

at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)

at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)

at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:294)

at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:272)

at database.Entity.init(Entity.java:22)

at employee.LogAccount.jButton1ActionPerformed(LogAccount.java:360)

at employee.LogAccount.access$100(LogAccount.java:17)

at employee.LogAccount$2.actionPerformed(LogAccount.java:100)

at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)

at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)

at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)

at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)

at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)

at java.awt.Component.processMouseEvent(Component.java:6504)

at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)

at java.awt.Component.processEvent(Component.java:6269)

at java.awt.Container.processEvent(Container.java:2229)

at java.awt.Component.dispatchEventImpl(Component.java:4860)

at java.awt.Container.dispatchEventImpl(Container.java:2287)

at java.awt.Component.dispatchEvent(Component.java:4686)

at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)

at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)

at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)

at java.awt.Container.dispatchEventImpl(Container.java:2273)

at java.awt.Window.dispatchEventImpl(Window.java:2713)

at java.awt.Component.dispatchEvent(Component.java:4686)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)

at java.awt.EventQueue.access$000(EventQueue.java:101)

at java.awt.EventQueue$3.run(EventQueue.java:666)

at java.awt.EventQueue$3.run(EventQueue.java:664)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)

at java.awt.EventQueue$4.run(EventQueue.java:680)

at java.awt.EventQueue$4.run(EventQueue.java:678)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf]. Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

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at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:535)

at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:476)

at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:435)

at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:676)

at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:621)

at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206)

at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:488)

... 44 more

BUILD STOPPED (total time: 3 minutes 2 seconds)run: