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How to access repeating fields using the generic Message type
by Kamp, Daniel (GE Healthcare)
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Re: How to access repeating fields using the generic Message type
by rahul somasunderam-2
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Most of the times you’re fine converting a message to the
highest supported version. We use the terser and convert any message to a 2.5 message. Then
we apply the logic that would apply for a 2.5 message. I understand there are some message types, some data types, and
some segments which get dropped as you progress across versions, but we haven’t
lost much data because of that. Regards, rahul From: Kamp, Daniel (GE
Healthcare) [mailto:Daniel.Kamp@...] Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given name,
and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields using the genericMessage type
by nksharma0624
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Dan, What do you mean by local graph? If you are just trying to extract and put it into another object
than Terser until makes life much more easier. I can see following options: 1.
Get Message parsed using Generic Parser 2.
Create the empty Object for your target object 3.
Get the Segments from parsed messages 4.
Use Terser to get the values Hope this helps. Thanks. Regards -Niranjan. From: Kamp, Daniel (GE
Healthcare) Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given
name, and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields using the generic Message type
by Michael Litherland
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Re: How to access repeating fields using the generic Message type
by James Agnew
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Re: How to access repeating fields using the generic Message type
by Kamp, Daniel (GE Healthcare)
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Re: How to access repeating fields using thegeneric Message type
by nksharma0624
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Rahul, How do you use Terser to convert to V2.5? I think James idea of having a extended ModelClassFactory for
V2.6 can serve the purpose? Thoughts? Thanks. Regards -Niranjan. From: rahul somasunderam
[mailto:rsom@...] Most of the times you’re fine converting a message to the
highest supported version. We use the terser and convert any message to a 2.5 message. Then
we apply the logic that would apply for a 2.5 message. I understand there are some message types, some data types, and
some segments which get dropped as you progress across versions, but we
haven’t lost much data because of that. Regards, rahul From: Kamp, Daniel (GE
Healthcare) [mailto:Daniel.Kamp@...] Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given
name, and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields using thegeneric Message type
by rahul somasunderam-2
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Hi Niranjan, public Message convert(Message message, String
version) throws
EncodingNotSupportedException, HL7Exception { String inVersion =
message.getVersion(); Terser terser = new
Terser(message); if
(!terser.get("/MSH-12").equals(version)) { terser.set("/MSH-12",
version); PipeParser pp =
new PipeParser(); message =
pp.parse(pp.encode(message)); return message; } else { return message; } } Hope that helps. And given that HAPI 0.6 is out, it is a good
idea to convert all messages to 2.6 [instead of 2.5 as I am doing], and then
process them. I haven’t tried the ModelClassFactory, but if that does the job
in pretty much the same way, please compare the performance of both solutions.
I parse the message twice and encode it once, making it slower. If you want to use the Idea James first mentioned, i.e. using
XPath like expressions, I would side with Michael’s idea of using LightHl7Lib.
I use LightHl7Lib for preprocessing messages before parsing them with HAPI. LightHl7Lib appears to be faster to me. I haven’t run any
metrics though. Regards, rahul From: Sharma, Niranjan K
(GE Healthcare) [mailto:niranjan.sharma@...] Rahul, How do you use Terser to convert to V2.5? I think James idea of having a extended ModelClassFactory for
V2.6 can serve the purpose? Thoughts? Thanks. Regards -Niranjan. From: rahul somasunderam
[mailto:rsom@...] Most of the times you’re fine converting a message to the
highest supported version. We use the terser and convert any message to a 2.5 message. Then
we apply the logic that would apply for a 2.5 message. I understand there are some message types, some data types, and
some segments which get dropped as you progress across versions, but we haven’t
lost much data because of that. Regards, rahul From: Kamp, Daniel (GE
Healthcare) [mailto:Daniel.Kamp@...] Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given
name, and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 Checked by
AVG - www.avg.com Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields usingthegeneric Message type
by nksharma0624
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Thanks Rahul. I will certainly would like to experiment with ModelClassFactory
idea as it seems less computing to get on Highest Version Message. Will keep the you posted. Thanks. Regards -Niranjan. From: rahul somasunderam
[mailto:rsom@...] Hi Niranjan,
public Message convert(Message message, String version)
throws EncodingNotSupportedException, HL7Exception {
String inVersion = message.getVersion();
Terser terser = new Terser(message);
if (!terser.get("/MSH-12").equals(version)) {
terser.set("/MSH-12", version);
PipeParser pp = new PipeParser();
message = pp.parse(pp.encode(message));
return message;
} else {
return message;
}
} Hope that helps. And given that HAPI 0.6 is out, it is a good
idea to convert all messages to 2.6 [instead of 2.5 as I am doing], and then
process them. I haven’t tried the ModelClassFactory, but if that does
the job in pretty much the same way, please compare the performance of both
solutions. I parse the message twice and encode it once, making it slower. If you want to use the Idea James first mentioned, i.e. using
XPath like expressions, I would side with Michael’s idea of using
LightHl7Lib. I use LightHl7Lib for preprocessing messages before parsing them
with HAPI. LightHl7Lib appears to be faster to me. I haven’t run any
metrics though. Regards, rahul From: Sharma, Niranjan K (GE
Healthcare) [mailto:niranjan.sharma@...] Rahul, How do you use Terser to convert to V2.5? I think James idea of having a extended ModelClassFactory for
V2.6 can serve the purpose? Thoughts? Thanks. Regards -Niranjan. From: rahul somasunderam
[mailto:rsom@...] Most of the times you’re fine converting a message to the
highest supported version. We use the terser and convert any message to a 2.5 message. Then
we apply the logic that would apply for a 2.5 message. I understand there are some message types, some data types, and
some segments which get dropped as you progress across versions, but we
haven’t lost much data because of that. Regards, rahul From: Kamp, Daniel (GE
Healthcare) [mailto:Daniel.Kamp@...] Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given
name, and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 Checked by
AVG - www.avg.com Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields using the genericMessage type
by nksharma0624
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James, When one create a custom ModelClassFactory Implementation and
return V2.6(lets say) message, will not cause trouble when we send ACK with 2.6
version in it for a sender of V2.3.1 message? Thanks. Regards -Niranjan. From: James Agnew
[mailto:james@...] Hi Daniel, On Thu, Jul 23, 2009 at 2:36 PM, Kamp, Daniel (GE
Healthcare) <Daniel.Kamp@...>
wrote: Good
afternoon, I
am trying to write a transformer which converts an HL7 message to a local
object graph. In doing so, I need to account for repeating fields. For
example, PID-5 can have multiple names and we need to parse it out into a List
of PatientName objects (each PatientName object contains family name, given
name, and name type code). Since
we need to support many versions of HL7 we can not use a specific v 2.x model
data types. Instead we are relying on the generic:
ca.uhn.hl7v2.model.Message
ca.uhn.hl7v2.util.Terser to
parse the message. I
have had a difficult time finding simple examples of parsing repeating fields
using these generic classes. I
realize if we used
ca.uhn.hl7v2.model.v25.message it
would be easier to do this, but we need to remain version agnostic. Can
anyone assist me in a simple way to extract a repeating field as mentioned
above? Thank
you in advance, Dan Dan
Kamp GE
Healthcare Information
Technologies - Global Engineering Shared
Asset Solutions T
(847) 277- 4327 www.gehealthcare.com
------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: How to access repeating fields using the genericMessage type
by James Agnew
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HAPI Threading Model
by nksharma0624
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Hi James, I have implemented a HL7Server based on HAPI’s HL7 Server
implementation. While doing the Threading and Memory analysis, I am realizing
that it has a growing Thread model. Which means HL7Server creates new thread for new message..literally? Can you throw some light on Threading model? Also, some facts
from UHN experience. I am pretty Happy with HAPI’s overall performance Please see the attached snapshot for your reference. Best Regards -Niranjan. ------------------------------------------------------------------------------ _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: HAPI Threading Model
by James Agnew
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Re: HAPI Threading Model
by nksharma0624
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Hi James, Thanks for your response. I am essentially trying to create an HL7 Server endpoint which
will eventually fed to a Q. Can you describe more on your model of EJB MDB
model. I thought you guys at UHN using HL7 server model. I thought HL7
server model is pretty neat and had lots of upside. We want to stay away from EJB and move towards OSGI
environment(pure JAVA). My goal is have this HL7 Server in OSGI platform. Is there a way, we can talk on phone? Thanks. Regards -Niranjan. From: jamesagnew@...
[mailto:jamesagnew@...] On Behalf Of James Agnew Hi Niranjan, On Fri, Jul 24, 2009 at 10:48 AM, Sharma, Niranjan K (GE
Healthcare) <niranjan.sharma@...>
wrote: Hi James, I have implemented a HL7Server
based on HAPI’s HL7 Server implementation. While doing the Threading and
Memory analysis, I am realizing that it has a growing Thread model. Which means HL7Server creates
new thread for new message..literally? Can you throw some light on
Threading model? Also, some facts from UHN experience. I am pretty Happy with
HAPI’s overall performance Please see the attached
snapshot for your reference. Best Regards -Niranjan. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: HAPI Threading Model
by rahul somasunderam-2
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Hi Niranjan, If you like Spring’s IOC, you can try taking a look at Camel HL7
which is a Spring integration for HAPI using ActiveMQ. I tried it a long while ago, and wasn’t quite successful at
getting it to work. But I remember some discussion on this mailing list about
Camel. Regards, rahul From: Sharma, Niranjan K
(GE Healthcare) [mailto:niranjan.sharma@...] Hi James, Thanks for your response. I am essentially trying to create an HL7 Server endpoint which
will eventually fed to a Q. Can you describe more on your model of EJB MDB
model. I thought you guys at UHN using HL7 server model. I thought HL7 server
model is pretty neat and had lots of upside. We want to stay away from EJB and move towards OSGI
environment(pure JAVA). My goal is have this HL7 Server in OSGI platform. Is there a way, we can talk on phone? Thanks. Regards -Niranjan. From: jamesagnew@...
[mailto:jamesagnew@...] On Behalf Of James Agnew Hi Niranjan, On Fri, Jul 24, 2009 at 10:48 AM, Sharma, Niranjan K (GE
Healthcare) <niranjan.sharma@...>
wrote: Hi James, I have implemented a HL7Server
based on HAPI’s HL7 Server implementation. While doing the Threading and
Memory analysis, I am realizing that it has a growing Thread model. Which means HL7Server creates
new thread for new message..literally? Can you throw some light on
Threading model? Also, some facts from UHN experience. I am pretty Happy with HAPI’s
overall performance Please see the attached
snapshot for your reference. Best Regards -Niranjan. Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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Re: HAPI Threading Model
by nksharma0624
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Hi Rahul, I have experimented with CAMEL. It works very fine for the
purpose it is..which is integration. HAPI has the entire fundamental you need for a HL7 server, I am
trying to see if one can create one. The only area where so far I am getting hit is Threading Model.
It is not poor but not the best either. Any experience in this area? Thanks. Regards -Niranjan. From: rahul somasunderam
[mailto:rsom@...] Hi Niranjan, If you like Spring’s IOC, you can try taking a look at
Camel HL7 which is a Spring integration for HAPI using ActiveMQ. I tried it a long while ago, and wasn’t quite successful
at getting it to work. But I remember some discussion on this mailing list
about Camel. Regards, rahul From: Sharma, Niranjan K
(GE Healthcare) [mailto:niranjan.sharma@...] Hi James, Thanks for your response. I am essentially trying to create an HL7 Server endpoint which
will eventually fed to a Q. Can you describe more on your model of EJB MDB
model. I thought you guys at UHN using HL7 server model. I thought HL7
server model is pretty neat and had lots of upside. We want to stay away from EJB and move towards OSGI
environment(pure JAVA). My goal is have this HL7 Server in OSGI platform. Is there a way, we can talk on phone? Thanks. Regards -Niranjan. From:
jamesagnew@... [mailto:jamesagnew@...] On Behalf Of James
Agnew Hi Niranjan, On Fri, Jul 24, 2009 at 10:48 AM, Sharma, Niranjan K (GE
Healthcare) <niranjan.sharma@...>
wrote: Hi James, I have implemented a HL7Server
based on HAPI’s HL7 Server implementation. While doing the Threading and
Memory analysis, I am realizing that it has a growing Thread model. Which means HL7Server creates
new thread for new message..literally? Can you throw some light on
Threading model? Also, some facts from UHN experience. I am pretty Happy with
HAPI’s overall performance Please see the attached
snapshot for your reference. Best Regards -Niranjan. Checked by
AVG - www.avg.com ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Hl7api-devel mailing list Hl7api-devel@... https://lists.sourceforge.net/lists/listinfo/hl7api-devel |
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