简洁后的 HAPI v2：获取整个更改的消息

Question

我有一条 HL7 消息，我正在使用 terser.set() 方法稍微处理其内容。完成后，我在调试器中看到它已经按照我想要的方式进行了更改，但我似乎无法完整地恢复整个消息。我试过（例如）：

HapiContext context = new DefaultHapiContext();
Parser      parser  = context.getGenericParser();
Message     message = parser.parse( MESSAGE );
Terser      terser  = new Terser( message );

terser.set( "/PID-2", "XXX XX XXXX" );

String fixedMessage = message.encode();

...这让我很接近，但是，以垂直条（管道）结束且其字段中没有值的线（线段）返回修剪（垂直条被简单地删除）。我希望消息与我输入的内容保持一致（如果我故意修改了它）。

Answer 1

我认为您需要在 ParserConfiguration 中使用 addForcedEncode。

喜欢

   @Test
   public void testSetManualRepetitions() {
    try {
        String m = "MSH|^~\&|hl7Integration|hl7Integration|||||ADT^A01|||2.3|\r" +
                "EVN|A01|20130617154644\r" +
                "PID|1|465 306 5961||407623|Wood^Patrick^^^MR||19700101|1||||||||||\r" +
                "PV1|1||Location||||||||||||||||261938_6_201306171546|||||||||||||||||||||||||20130617134644|||||||||";

        HapiContext hc = new DefaultHapiContext();
        ExecutorService es = hc.getExecutorService(); // to avoid npe when closing context should be fixed https://sourceforge.net/p/hl7api/bugs/223/
        ParserConfiguration pc = hc.getParserConfiguration();
        PipeParser pipeParser = hc.getPipeParser();
        Message message = pipeParser.parse(m);
        Terser terser = new Terser(message);
        //Add first Address
        terser.set("/.PID-11(0)-1", "13 Oxford Road");
        terser.set("/.PID-11(0)-3", "Oxford");
        //Add second Address
        terser.set("/.PID-11(1)-1", "16 London Road");
        terser.set("/.PID-11(1)-3", "London");

        pc.addForcedEncode("PID-26-1"); // make sure PID has 26 fields
        System.out.println(message.encode().replaceAll("\r", "\r\n"));
        hc.close();
    } catch (HL7Exception e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

产量：

/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/bin/java -ea -Didea.launcher.port=7540 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar:/Applications/IntelliJ IDEA CE.app/Contents/plugins/junit/lib/junit-rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/lib/tools.jar:/Users/thomas/git/Hapi-HL7-Terser/target/test-classes:/Users/thomas/.m2/repository/junit/junit/4.4/junit-4.4.jar:/Users/thomas/.m2/repository/ca/uhn/hapi/hapi-base/2.2/hapi-base-2.2.jar:/Users/thomas/.m2/repository/ca/uhn/hapi/hapi-structures-v21/2.2/hapi-structures-v21-2.2.jar:/Users/thomas/.m2/repository/ca/uhn/hapi/hapi-structures-v23/2.2/hapi-structures-v23-2.2.jar:/Users/thomas/.m2/repository/ca/uhn/hapi/hapi-structures-v24/2.2/hapi-structures-v24-2.2.jar:/Users/thomas/.m2/repository/ca/uhn/hapi/hapi-structures-v25/2.2/hapi-structures-v25-2.2.jar:/Users/thomas/.m2/repository/org/slf4j/slf4j-simple/1.6.0/slf4j-simple-1.6.0.jar:/Users/thomas/.m2/repository/org/slf4j/slf4j-api/1.6.0/slf4j-api-1.6.0.jar:/Users/thomas/.m2/repository/org/slf4j/log4j-over-slf4j/1.6.2/log4j-over-slf4j-1.6.2.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 com.hl7integration.hapi.tests.SetRepetitionsTerserTest,testSetManualRepetitions
68 [main] INFO ca.uhn.hl7v2.util.Home - hapi.home is set to /Users/thomas/git/Hapi-HL7-Terser/.
170 [main] INFO ca.uhn.hl7v2.VersionLogger - HAPI version is: 2.2
197 [main] INFO ca.uhn.hl7v2.VersionLogger - Default Structure libraries found for HL7 versions 2.1, 2.3, 2.4, 2.5, 
MSH|^~\&|hl7Integration|hl7Integration|||||ADT^A01|||2.3
EVN|A01|20130617154644
PID|1|465 306 5961||407623|Wood^Patrick^^^MR||19700101|1|||13 Oxford Road^^Oxford~16 London Road^^London|||||||||||||||
PV1|1||Location||||||||||||||||261938_6_201306171546|||||||||||||||||||||||||20130617134644

从技术上讲，您并不是更改消息，而是将其解析为 Java 对象并将其编码回字符串。这样您的输出消息看起来就像您的输入消息。之后可能仍然存在细微差别（例如，如果您的输入消息是动态的）。

来自文档 (http://hl7api.sourceforge.net/configuring_hapi.html)：

强制编码

默认情况下，在对消息进行编码时，HAPI 不会对任何没有内容的段或字段进行编码，因此在消息中没有语义意义。

如果您需要将消息传输到期望存在某些空内容的系统以便获得"hints"消息在消息中的位置，这可能会导致问题。

addForcedEncode 方法可用于添加应强制编码的 Terser 路径：

parser.getParserConfiguration().addForcedEncode("PATIENT_RESULT/ORDER_OBSERVATION/ORC-4"); // 即使 ORC 没有内容，ORC-4 仍然存在（但为空）字符串编码 = parser.encode(消息); 有关示例，请参阅 Java文档。

简洁后的 HAPI v2：获取整个更改的消息

HAPI v2 after terser: get entire changed message

hapi