package ca.uhn.hl7v2.model;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.Version;
import ca.uhn.hl7v2.parser.ModelClassFactory;
/**
* A generic HL7 message, meant for parsing message with unrecognized structures
* into a flat list of segments.
*
* @author Bryan Tripp
* @author Christian Ohr
*/
@SuppressWarnings("serial")
public abstract class GenericMessage extends AbstractMessage {
private static final Logger log = LoggerFactory.getLogger(GenericMessage.class);
/**
* Creates a new instance of GenericMessage.
*
* @param factory class factory for contained structures
*/
public GenericMessage(ModelClassFactory factory) {
super(factory);
try {
this.addNonstandardSegment("MSH");
} catch(HL7Exception e) {
String message = "Unexpected error adding GenericSegment to GenericMessage.";
log.error(message, e);
throw new Error(message); // TODO better throw RuntimeException
}
}
/**
* Returns a subclass of GenericMessage corresponding to a certain version.
* This is needed so that version-specific segments can be added as the message
* is parsed.
*
* @param version the HL7 version
* @return the class of the generic message
*/
@SuppressWarnings("unchecked")
public static Class<? extends Message> getGenericMessageClass(String version) {
Version v = Version.versionOf(version);
if (v != null) {
try {
String className = GenericMessage.class.getName() + "$" + v.name();
return (Class<? extends Message>)Class.forName(className);
} catch (ClassNotFoundException e) {
// should not happen as long Version corresponds with the static
// subclasses of GenericMessage
}
}
log.debug("Unknown version for generic type {}", version);
return UnknownVersion.class;
}
public static class UnknownVersion extends GenericMessage {
private static final long serialVersionUID = 4773366840392833956L;
public UnknownVersion(ModelClassFactory factory) {
super(factory);
}
public String getVersion() {
return Version.latestVersion().getVersion();
}
}
public static class V21 extends GenericMessage {
private static final long serialVersionUID = 4773366840392833956L;
public V21(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V21.getVersion(); }
}
public static class V22 extends GenericMessage {
private static final long serialVersionUID = 7124224621400437244L;
public V22(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V22.getVersion(); }
}
public static class V23 extends GenericMessage {
private static final long serialVersionUID = -8794048442253389190L;
public V23(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V23.getVersion(); }
}
public static class V231 extends GenericMessage {
private static final long serialVersionUID = 5979370667795858995L;
public V231(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V231.getVersion(); }
}
public static class V24 extends GenericMessage {
private static final long serialVersionUID = -4944772617600551061L;
public V24(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V24.getVersion(); }
}
public static class V25 extends GenericMessage {
private static final long serialVersionUID = 3937051332672967947L;
public V25(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V25.getVersion(); }
}
public static class V251 extends GenericMessage {
private static final long serialVersionUID = -767282165482145544L;
public V251(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V251.getVersion(); }
}
public static class V26 extends GenericMessage {
private static final long serialVersionUID = -1693277295151324396L;
public V26(ModelClassFactory factory) {
super(factory);
}
public String getVersion() { return Version.V26.getVersion(); }
}
}