Divide and conquer
Tuesday, July 23, 2019
Friday, July 19, 2019
Raster graphics and Vector graphics
Raster Graphics Vector graphics
This is composed of pixels This is composed of paths
No File records Maintain a record of start and end, number
of lines , number of straight and curve lines
and colours used
Quality is lost when size changes Quality is not change when size changes
Use less memory space Use more memory space
Not suitable for high quality creations Suitable for high quality creations
This is composed of pixels This is composed of paths
No File records Maintain a record of start and end, number
of lines , number of straight and curve lines
and colours used
Quality is lost when size changes Quality is not change when size changes
Use less memory space Use more memory space
Not suitable for high quality creations Suitable for high quality creations
Friday, April 5, 2019
Maven Repository
Maven repository is a directory that contained packaged JAR files.
Maven searches for dependencies in the repositories.
It searches for dependencies first in the local repository which is located in the local system created by maven when you run any maven command.
The directory is named as .m2 by default.
Second, It searches for maven central repository which is located in the web created by the apache maven community itself
Third, It searches for remote repository which is located on the web. We need to define remote repository in pom file.
Maven searches for dependencies in the repositories.
It searches for dependencies first in the local repository which is located in the local system created by maven when you run any maven command.
The directory is named as .m2 by default.
Second, It searches for maven central repository which is located in the web created by the apache maven community itself
Third, It searches for remote repository which is located on the web. We need to define remote repository in pom file.
Tuesday, February 26, 2019
HL7 - Intro
HL-7 is an international standard used to exchange medical records between healthcare systems. It is introduced by Health level 7 international which is an non profit organization.
Health Level Seven refers to the seventh level(Application Layer) of OSI Model(Open System Interconnection). It specifies communication contents and exchange formats on the 7th layer on OSI.
Application layer addresses the definition of data to be exchanged, the timing of the interchange and communication of certain errors to the application.
Application layer function supports security check, availability check, exchange mechanism negotiation and data exchanging structuring.
Health Level Seven refers to the seventh level(Application Layer) of OSI Model(Open System Interconnection). It specifies communication contents and exchange formats on the 7th layer on OSI.
Application layer addresses the definition of data to be exchanged, the timing of the interchange and communication of certain errors to the application.
Application layer function supports security check, availability check, exchange mechanism negotiation and data exchanging structuring.
Monday, February 25, 2019
HL-7 Version 2 Message Structure
Message
Message is the smallest transferable unit in hl7 and is composed of segments. It begins with the message header Segment(MSH) and is identified by the message type and the initiating event (trigger event).Segments
Segments are a way of grouping of items in a logical way. Segments are clearly identified by three letters located at the beginning(Segment Identifier) and are separated by segment separators.Here, all segments beginning with Z are reserved for locally defined messages.
Fields
The information are contained in the fields of the segments. These fields are in variable length and are separated by field separators.For each field. a data type is defined.
Field contents can be required or optional and individual fields can be repeated.
Multi component fields are used for further sub division of a field and facilitate the transmission of logically related contents.
Abstract Message Syntax
Hl7 Messages are structured using Abstract Message Syntax to enable straight forward exchange. This describes the frequency of occurrence (cardinality) and definition (required/optional/repeatable) of control and data segments in a message.
Required segments are identified by the segment identifiers, optional segments enclosed in [], repeatable in {}.
Encoding Rules
HL7 provides a specification for the presentation of data. The separating are as follows:Every message begins with the information about the message itself.
| => Field Separator
^ => Component Separator
~ = Repetition Separator
\ => Escape Character
& => Subcomponent Separator
Message Segments
MSH => Message headerPID => patient identity
PV1 => patient visit information
NK1 => patient’s Next of Kin
EVN => event type
OBX => observation/result
AL1 => Allergy information
DG1 => Diagnosis information
DRG => Diagnosis related group
PR1 => procedures
ROL => Role
IN1 => Insurance
ACC => Accident information
ROL => Role
PDA => Patient death and autopsy
Message Types
ADT => Admission Transfer DischargeORM => Order (Pharmacy/ Treatment)
ORU => Observation Result
BAR => (Add/ Change) Billing Account
ACK=> General Acknowledgement
DFT => Detailed Financial Transaction
MDM => Medical Document Management
MFN => Master Files Notification
RAS => Pharmacy/ Treatment Administration
RDE => Pharmacy/ Treatment Encoded Order
RGV => Pharmacy/ Treatment Give
Message Structure
Sunday, February 24, 2019
Handling HAPI Test Panel
What is HAPI Test Panel
HAPI Test Panel is a full featured HL7 message editor, used to send and receive HL7 messages.
Install TestPanel
- Download hapi-testpanel-2.0.1-linux.tar.bz2 from here
- Extract the download to your perfect location
- In Ubuntu, run the testpanel.sh file which is at the Home of the Hapi Test Panel extraction
- In Windows, run the testpanel Application which is at the Home of the Hapi Test Panel extraction
Sending HL7 messages using Testpanel
Creating Sample HL7 Message
- Go to Test menu and click Populate TestPanel with sample message and connections
- You can send the message by clicking the send button
Sending HL7 messages
- You can click the plus button which is in the Sending Connections panel in the left menu
- You can give your appropriate Port number, encoding schemes and etc under the Setting menu
- You can see the activities through the selected port under the Activity
Receiving HL7 messages
- You can click the plus button which is in the Receiving Connections panel in the left menu
- You can give your appropriate Port number, encoding schemes and etc under the Setting menu
- You can see the activities through the selected port under the Activity
Creating different type of HL7 messages
- Go to File which is in the main menu and click the New Message
- Select the appropriate message version and message type
Saturday, February 23, 2019
Hl7 Simple Java Client
HL7 Sender Java Code
HL7 Receiver Java Code
This main class is used to
Simple Application class that is used to receive the message and create and send the acknowledgement
Event Router class that is used to rout the message to the appropriate versions and types.
| package hl7sender; import ca.uhn.hl7v2.DefaultHapiContext; import ca.uhn.hl7v2.HapiContext; import ca.uhn.hl7v2.app.Connection; import ca.uhn.hl7v2.app.Initiator; import ca.uhn.hl7v2.model.Message; import ca.uhn.hl7v2.parser.Parser; public class hl7sender { public static void main(String[] args) { final int PORT_NUMBER = 9014; // In HAPI, almost all things revolve around a context object. HapiContext context = new DefaultHapiContext(); try { String adtMessage = "MSH|^~\\&|NES|NINTENDO|TESTSYSTEM|TESTFACILITY|" + "20010101000000||ADT^A01|Q123456789T123456789X123456|P|2.3\r" + "EVN|A01|20010101000000|||^KOOPA^BOWSER\r" + "PID|1||123456789|0123456789^AA^^JP|BROS^MARIO||19850101000000|" + "M|||123 FAKE STREET^MARIO \\T\\ LUIGI BROS PLACE^TOADSTOOL" + "KINGDOM^NES^A1B2C3^JP^HOME^^1234|1234|(555)555-0123^HOME^JP:" + "1234567|||S|MSH|12345678|||||||0|||||N\r" + "NK1|1|PEACH^PRINCESS|SO|ANOTHER CASTLE^^TOADSTOOL KINGDOM" + "^NES^^JP|(123)555-1234|(123)555-2345|NOK\r" + "NK1|2|TOADSTOOL^PRINCESS|SO|YET ANOTHER CASTLE^^TOADSTOOL" + "KINGDOM^NES^^JP|(123)555-3456|(123)555-4567|EMC\r" + "PV1|1|O|ABCD^EFGH||||123456^DINO^YOSHI^^^^^^MSRM^CURRENT" + "^^^NEIGHBOURHOOD DR NBR|^DOG^DUCKHUNT^^^^^^^CURRENT||CRD||" + "|||||123456^DINO^YOSHI^^^^^^MSRM^CURRENT^^^NEIGHBOURHOOD DR" + " NBR|AO|0123456789|1|||||||||||||||||||MSH||A|||20010101000000\r" + "IN1|1|PAR^PARENT||||LUIGI\r"; // create a new MLLP client over the specified port. Connection connection = context.newClient("localhost", PORT_NUMBER, false); // The initiator which will be used to transmit our message. Initiator initiator = connection.getInitiator(); // send the created HL7 message over the connection established Parser parser = context.getPipeParser(); System.out.println("Sending message:" + "\n" + adtMessage); Message response = initiator.sendAndReceive(parser.parse(adtMessage)); // display the message response received from the remote party String responseString = parser.encode(response); System.out.println("Received response:\n" + responseString.replaceAll("\r", "\n")); } catch (Exception e) { e.printStackTrace(); } } } |
HL7 Receiver Java Code
This main class is used to
| package hl7receiver; import ca.uhn.hl7v2.DefaultHapiContext; import ca.uhn.hl7v2.HapiContext; import ca.uhn.hl7v2.app.HL7Service; import ca.uhn.hl7v2.parser.Parser; import ca.uhn.hl7v2.parser.PipeParser; public class hl7receiver { public static void main(String args[]) { final int PORT_NUMBER = 9014; //In HAPI,almost all things revolve around a context object HapiContext context = new DefaultHapiContext(); try { Parser parser = new PipeParser(); HL7Service ourHl7Server = context.newServer(PORT_NUMBER, false); // You can set up routing rules for your HL7 listener by extending the AppRoutingData class ourHl7Server.registerApplication(new RegisterEventRouter(), new ourSimpleApplication()); ourHl7Server.setShutdownTimeout(10000); ourHl7Server.startAndWait(); } catch (Exception e) { e.printStackTrace(); } } } |
Simple Application class that is used to receive the message and create and send the acknowledgement
| package hl7receiver; import ca.uhn.hl7v2.HL7Exception; import ca.uhn.hl7v2.model.Message; import ca.uhn.hl7v2.parser.PipeParser; import ca.uhn.hl7v2.protocol.ReceivingApplication; import ca.uhn.hl7v2.protocol.ReceivingApplicationException; import java.io.IOException; import java.util.Map; public class ourSimpleApplication implements ReceivingApplication { PipeParser pipeParser = new PipeParser(); public Message processMessage(Message message, Map map) throws ReceivingApplicationException, HL7Exception { System.out.println("Received Message\n" + pipeParser.encode(message)); Message response = null; try { response = message.generateACK(); System.out.println("Sent Response\n" + pipeParser.encode(response)); } catch (IOException e) { e.printStackTrace(); } return response; } public boolean canProcess(Message message) { return true; } } |
Event Router class that is used to rout the message to the appropriate versions and types.
| package hl7receiver; import ca.uhn.hl7v2.protocol.ApplicationRouter; public class RegisterEventRouter implements ApplicationRouter.AppRoutingData { public String getMessageType() { return "*"; } public String getTriggerEvent() { return "*"; } public String getProcessingId() { return "*"; } public String getVersion() { return "*"; } } |
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