I have the following objects
Class progressNote
@Entity public class ProgressNote implements Serializable{ @Id private NotesKey notesKey = new NotesKey(); private Set<PatientObjective> patientObjectives; public NotesKey getNotesKey() { return notesKey; } public void setNotesKey(NotesKey notesKey) { this.notesKey = notesKey; } @OneToMany(fetch=FetchType.LAZY) @Access(AccessType.PROPERTY) @JoinColumns({ @JoinColumn(name="noteNumber",referencedColumnName="noteNumber"), @JoinColumn(name="ddate",referencedColumnName="ddate"), @JoinColumn(name="patient_id",referencedColumnName="patient_id") }) public Set<PatientObjective> getPatientObjectives() { return patientObjectives; } public void setPatientObjectives(Set<PatientObjective> patientObjectives) { this.patientObjectives = patientObjectives; } }
NotesKey Class
@Embeddable public class NotesKey implements Serializable{ private Byte noteNumber; @Temporal(javax.persistence.TemporalType.DATE) @Column(name="ddate") private Date noteDate; private Patient patient; public Byte getNoteNumber() { return noteNumber; } public void setNoteNumber(Byte noteNumber) { this.noteNumber = noteNumber; } public Date getNoteDate() { return noteDate; } public void setNoteDate(Date noteDate) { this.noteDate = noteDate; } @ManyToOne(fetch=FetchType.LAZY) @Access(AccessType.PROPERTY) public Patient getPatient() { return patient; } public void setPatient(Patient patient) { this.patient = patient; } @Override public int hashCode() { ........ } @Override public boolean equals(Object obj) { ........ } }
Class PatientObjective
@Entity public class PatientObjective implements Serializable{ @Id private PatientObjectiveKey patientObjectiveKey; public PatientObjectiveKey getPatientObjectiveKey() { return patientObjectiveKey; } public void setPatientObjectiveKey(PatientObjectiveKey patientObjectiveKey) { this.patientObjectiveKey = patientObjectiveKey; } }
Class PatientObjectiveKey
@Embeddable public class PatientObjectiveKey implements Serializable{ private Objective objective; private Byte noteNumber; @Temporal(javax.persistence.TemporalType.DATE) @Column(name="ddate") private Date noteDate; private Patient patient; @ManyToOne(fetch=FetchType.LAZY) @Access(AccessType.PROPERTY) public Objective getObjective() { return objective; } public void setObjective(Objective objective) { this.objective = objective; } public Byte getNoteNumber() { return noteNumber; } public void setNoteNumber(Byte noteNumber) { this.noteNumber = noteNumber; } public Date getNoteDate() { return noteDate; } public void setNoteDate(Date noteDate) { this.noteDate = noteDate; } @ManyToOne(fetch=FetchType.LAZY) @Access(AccessType.PROPERTY) public Patient getPatient() { return patient; } public void setPatient(Patient patient) { this.patient = patient; } @Override public int hashCode() { ....... } @Override public boolean equals(Object obj) { ........ } }
After using this named query
@NamedQuery (name = "findAllProgressNoteWithObjective", query = "from ProgressNote p internal join fetch p.patientObjectives as o, where p.notesKey.patient.id =: patientId)") using the hibernate spring findByNamedQueryAndNamedParam template
In the table, I have 2 ProgressNotes that have one goal and the other 17 goals. I get the result in Java as follows.
Request created as
select progressno0_.ddate as ddate46_0_, progressno0_.noteNumber as noteNumber46_0_, progressno0_.patient_id as patient17_46_0_, patientobj1_.ddate as ddate36_1_, patientobj1_.noteNumber as noteNumber36_1_, patientobj1_.objective_id as objective5_36_1_, patientobj1_.patient_id as patient6_36_1_, progressno0_.assessment as assessment46_0_, progressno0_.bloodPressure1 as bloodPre4_46_0_, progressno0_.bloodPressure2 as bloodPre5_46_0_, progressno0_.creationDate as creation6_46_0_, progressno0_.height as height46_0_, progressno0_.lastUpdatedDate as lastUpda8_46_0_, progressno0_.plans as plans46_0_, progressno0_.status as status46_0_, progressno0_.subject as subject46_0_, progressno0_.temprature as temprature46_0_, progressno0_.tempratureUnit as temprat13_46_0_, progressno0_.lastid as lastid46_0_, progressno0_.waist as waist46_0_, progressno0_.weight as weight46_0_, progressno0_.weightUnit as weightUnit46_0_, patientobj1_.remark as remark36_1_, patientobj1_.value as value36_1_, patientobj1_.ddate as ddate46_0__, patientobj1_.noteNumber as noteNumber46_0__, patientobj1_.patient_id as patient6_46_0__, patientobj1_.ddate as ddate0__, patientobj1_.noteNumber as noteNumber0__, patientobj1_.objective_id as objective5_0__, patientobj1_.patient_id as patient6_0__ from pnheader progressno0_ inner join pnobjremark patientobj1_ on progressno0_.ddate=patientobj1_.ddate and progressno0_.noteNumber=patientobj1_.noteNumber and progressno0_.patient_id=patientobj1_.patient_id where progressno0_.patient_id=?
Question
Problem. I see why I get multiple instances of ProgressNote (id = 152). Is there any way to avoid this duplication?
I would really appreciate it if someone would explain to me or direct me in the right direction.
Using Hibernate 3.6, Mysql 5.6.10