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...

The

...

following

...

steps

...

were

...

outlined

...

by

...

Tammy

...

Dugan

...

on

...

the

...

developers'

...

mailing

...

list.

...

The

...

following

...

should

...

be

...

the

...

complete

...

solution

...

for

...

extending

...

an

...

OpenMRS

...

table

...

through

...

a

...

module:

...

  • add

...

  • appropriate

...

  • code

...

  • in

...

  • sqldiff.xml

...

  • (or

...

  • liquibase.xml,

...

  • for

...

  • more

...

  • info

...

  • see

...

  • :

...

...

...

...

...

  • )

...

  • to

...

  • add

...

  • the

...

  • column

...

  • to

...

  • the

...

  • table

...

  • add

...

  • an

...

  • entry

...

  • for

...

  • the

...

  • module's

...

  • Encounter.hbm

...

  • file

...

  • under

...

  • mappingFiles

...

  • in

...

  • config.xml

...

  • create

...

  • an

...

  • empty

...

  • service

...

  • to

...

  • call

...

  • the

...

  • module's

...

  • encounter

...

  • that

...

  • extends

...

  • OpenMRS's

...

  • EncounterService

...

  • object

...

  • create

...

  • an

...

  • hbm

...

  • file

...

  • for

...

  • the

...

  • module's

...

  • encounter

...

  • with

...

  • the

...

  • following

...

  • mapping

...

  • format
    Code Block
    
<hibernate-mapping auto-import="false">
    <subclass name="org.openmrs.module.atdproducer.Encounter"
            extends="org.openmrs.Encounter" discriminator-value="not null">
        <property name="scheduledTime" type="java.util.Date"
                column="scheduled_datetime"/>
    </subclass>
</hibernate-mapping>
    For

...

  • this

...

  • hbm

...

  • file

...

  • to

...

  • work,

...

  • the

...

  • following

...

  • xml

...

  • must

...

  • exist

...

  • in

...

  • the

...

  • OpenMRS

...

  • Encounter.hbm

...

  • file:
    Code Block

...

  • <discriminator column="encounter_id" insert="false" />

...

If 
...
 this 
...
 xml 
...
 does 
...
 not 
...
 exist 
...
 in 
...
 the 
...
 OpenMRS 
...
 Encounter.hbm 
...
 file, 
...
 you 
...
 will 
...
 need 
...
 to 
...
 add 
...
 it 
...
 and 
...
 create 
...
 a 
...
 custom 
...
 build 
...
 of 
...
 OpenMRS.
...
  • create 
...
  •  an 
...
  •  encounter 
...
  •  class 
...
  •  that 
...
  •  extends 
...
  •  the 
...
  •  OpenMRS 
...
  •  encounter 
...
  •  class.
...
Make 
...
 sure 
...
 to 
...
 override 
...
 the 
...
 constructors 
...
 from 
...
 the 
...
 super 
...
 class 
...
 and 
...
 add 
...
 getters, 
...
 setters, 
...
 and 
...
 instance 
...
 variables 
...
 for 
...
 the 
...
 columns 
...
 you 
...
 are 
...
 adding.
...
  • create 
...
  •  an 
...
  •  empty 
...
  •  EncounterDAO 
...
  •  class 
...
  •  that 
...
  •  extends 
...
  •  OpenMRS 
...
  •  EncounterDAO
...
  • create 
...
  •  an 
...
  •  EncounterServiceImp 
...
  •  class 
...
  •  that 
...
  •  extends 
...
  •  OpenMRS 
...
  •  EncounterServiceImp 
...
  •  and 
...
  •  implements 
...
  •  your 
...
  •  module's 
...
  •  EncounterService 
...
  •  class.
...
Create 
...
 an 
...
 empty 
...
 parameter 
...
 constructor 
...
 and 
...
 create 
...
 a 
...
 method 
...
 like 
...
 the 
...
 following:
 Code Block

public void setTestDAO(org.openmrs.module.atdproducer.db.EncounterDAO dao){
        this.dao = dao;
        super.setEncounterDAO(this.dao);
   }

The 
...
 method 
...
 name 
...
 should 
...
 match 
...
 the 
...
 property 
...
 xml 
...
 wrapped 
...
 around 
...
 the 
...
 hibernate 
...
 implementation 
...
 class 
...
 in 
...
 the 
...
 moduleApplicationContext.xml 
...
 file. 
...
 Mine 
...
 looks 
...
 like 
...
 this:<property 
...
 name="testDAO">
...
  • add 
...
  •  an 
...
  •  entry 
...
  •  in 
...
  •  moduleApplicationContext 
...
  •  just 
...
  •  like 
...
  •  you 
...
  •  would 
...
  •  for 
...
  •  any 
...
  •  other 
...
  •  service 
...
  •  and 
...
  •  point 
...
  •  to 
...
  •  your 
...
  •  service 
...
  •  interface 
...
  •  class, 
...
  •  service 
...
  •  implementation 
...
  •  class, 
...
  •  and 
...
  •  hibernate 
...
  •  implementation 
...
  •  class 
...
  •  for 
...
  •  the 
...
  •  added 
...
  •  columns.
...
  • create 
...
  •  a 
...
  •  HibernateEncounterDAO 
...
  •  that 
...
  •  extends 
...
  •  OpenMRS's 
...
  •  HibernateEncounterDAO 
...
  •  and 
...
  •  implements 
...
  •  your 
...
  •  module's 
...
  •  EncounterDAO. 
...
  •  Create 
...
  •  an 
...
  •  empty 
...
  •  constructor 
...
  •  and 
...
  •  a 
...
  •  method 
...
  •  that 
...
  •  looks 
...
  •  like 
...
  •  the 
...
  •  following: 
     Code Block
    
public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
        super.setSessionFactory(this.sessionFactory);
...
  • 

...
  • }

     To 
...
  •  make 
...
  •  sure 
...
  •  you 
...
  •  return 
...
  •  the 
...
  •  correct 
...
  •  type 
...
  •  of 
...
  •  encounter 
...
  •  objects 
...
  •  when 
...
  •  you 
...
  •  call 
...
  •  your 
...
  •  empty 
...
  •  EncounterService 
...
  •  class, 
...
  •  you 
...
  •  must 
...
  •  override 
...
  •  every 
...
  •  method 
...
  •  in 
...
  •  OpenMRS's 
...
  •  HibernateEncounterDAO 
...
  •  that 
...
  •  returns 
...
  •  Encounter 
...
  •  objects 
...
  •  and 
...
  •  convert 
...
  •  them 
...
  •  to 
...
  •  your 
...
  •  encounter 
...
  •  objects. 
...
  •  Here 
...
  •  is 
...
  •  an 
...
  •  example 
...
  •  method: 
     Code Block
    
public Set<org.openmrs.Encounter> getEncounters(Patient who, Location where) {
        Set<org.openmrs.Encounter> openMRSEncounters = super.getEncounters(who,
                where);
        return convertOpenMRSEncToModuleEnc(openMRSEncounters);
...
  • 

...
  • }

private Set<org.openmrs.Encounter> convertOpenMRSEncToModuleEnc(
...
  • Set<org.openmrs.Encounter> openMRSEncounters)
{
Set<org.openmrs.Encounter> moduleEncounters = new HashSet<org.openmrs.Encounter>();

for (org.openmrs.Encounter currOpenMRSEncounter&nbsp;: openMRSEncounters){            moduleEncounters.add(this.getEncounter(currOpenMRSEncounter
                    .getEncounterId()));        }
return moduleEncounters;
}