| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ApplicationRouter |
|
| 1.0;1 | ||||
| ApplicationRouter$AppRoutingData |
|
| 1.0;1 |
| 1 | /* | |
| 2 | * Created on 16-Apr-2004 | |
| 3 | */ | |
| 4 | package ca.uhn.hl7v2.protocol; | |
| 5 | ||
| 6 | import ca.uhn.hl7v2.HL7Exception; | |
| 7 | import ca.uhn.hl7v2.model.Message; | |
| 8 | import ca.uhn.hl7v2.parser.Parser; | |
| 9 | ||
| 10 | /** | |
| 11 | * Routes messages to the appropriate application. | |
| 12 | * | |
| 13 | * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a> | |
| 14 | */ | |
| 15 | public interface ApplicationRouter { | |
| 16 | /** | |
| 17 | * {@link Transportable#getMetadata() Metadata} key: | |
| 18 | * Charset (MSH-18) | |
| 19 | */ | |
| 20 | String METADATA_KEY_MESSAGE_CHARSET = "MSH-18"; | |
| 21 | ||
| 22 | /** | |
| 23 | * {@link Transportable#getMetadata() Metadata} key: | |
| 24 | * Message control ID (MSH-10) | |
| 25 | */ | |
| 26 | String METADATA_KEY_MESSAGE_CONTROL_ID = MetadataKeys.IN_MESSAGE_CONTROL_ID; | |
| 27 | ||
| 28 | /** | |
| 29 | * {@link Transportable#getMetadata() Metadata} key: | |
| 30 | * Provides the IP of the sending system for a given message | |
| 31 | */ | |
| 32 | String METADATA_KEY_SENDING_IP = MetadataKeys.IN_SENDING_IP; | |
| 33 | ||
| 34 | /** | |
| 35 | * {@link Transportable#getMetadata() Metadata} key: | |
| 36 | * Provides the port of the sending system for a given message | |
| 37 | */ | |
| 38 | String METADATA_KEY_SENDING_PORT = MetadataKeys.IN_SENDING_PORT; | |
| 39 | ||
| 40 | ||
| 41 | /** | |
| 42 | * Attempts to route the given message to the associated <code>Application</code> | |
| 43 | * and obtain a response. | |
| 44 | * | |
| 45 | * @param theMessage the message to route | |
| 46 | * @return the response message (this may be null, for example if the given | |
| 47 | * message doesn't require an application ACK) | |
| 48 | */ | |
| 49 | public Transportable processMessage(Transportable theMessage) throws HL7Exception; | |
| 50 | ||
| 51 | /** | |
| 52 | * @param theRoutingData message fields used in determining the appropriate destination | |
| 53 | * @return true if there is a destination application for messages with the given | |
| 54 | * characteristics | |
| 55 | */ | |
| 56 | public boolean hasActiveBinding(AppRoutingData theRoutingData); | |
| 57 | ||
| 58 | /** | |
| 59 | * <p>Associates the given application with the given message parameters, so that messages | |
| 60 | * with matching parameters will be sent there. Only one application can be registered | |
| 61 | * for a given set of parameters: repeated registration for a particular combination | |
| 62 | * over-writes the previous one.</p> | |
| 63 | * <p/> | |
| 64 | * <p>Because of wildcards, there may be multiple registrations that match a given message. | |
| 65 | * In this case, the first registered wins.</p> | |
| 66 | * | |
| 67 | * @param theRoutingData message fields used in determining the appropriate destination | |
| 68 | * @param theApplication the application to which messages with these parameters should be | |
| 69 | * sent | |
| 70 | */ | |
| 71 | public void bindApplication(AppRoutingData theRoutingData, ReceivingApplication<? extends Message> theApplication); | |
| 72 | ||
| 73 | /** | |
| 74 | * Removes the binding for the given message parameters | |
| 75 | * | |
| 76 | * @param theRoutingData | |
| 77 | * @return true if an application was unbound, false otherwise | |
| 78 | */ | |
| 79 | public boolean unbindApplication(AppRoutingData theRoutingData); | |
| 80 | ||
| 81 | /** | |
| 82 | * Removes the binding for the given message parameters | |
| 83 | * | |
| 84 | * @param theRoutingData | |
| 85 | * @return true if an application was unbound, false otherwise | |
| 86 | */ | |
| 87 | public boolean unbindApplication(ReceivingApplication<? extends Message> theApplication); | |
| 88 | ||
| 89 | /** | |
| 90 | * Temporarily deactivates the binding on the given field data, if present. | |
| 91 | * | |
| 92 | * @param theRoutingData the fields that define a set of messages that are bound to | |
| 93 | * some <code>Application</code> | |
| 94 | */ | |
| 95 | public void disableBinding(AppRoutingData theRoutingData); | |
| 96 | ||
| 97 | /** | |
| 98 | * Undoes <code>disableBinding(AppRoutingData theRoutingData)</code>. | |
| 99 | * | |
| 100 | * @param theRoutingData the fields that define a set of messages that are bound to | |
| 101 | * some <code>Application</code> | |
| 102 | */ | |
| 103 | public void enableBinding(AppRoutingData theRoutingData); | |
| 104 | ||
| 105 | /** | |
| 106 | * @return the <code>Parser</code> that is used to parse inbound messages | |
| 107 | * and encode outbound ones. It may be of interest to set certain parameters | |
| 108 | * of this parser. | |
| 109 | */ | |
| 110 | public Parser getParser(); | |
| 111 | ||
| 112 | /** | |
| 113 | * Sets an exception handler which will be invoked in the event of a | |
| 114 | * failure during parsing, processing, or encoding of an | |
| 115 | * incoming message or its response. | |
| 116 | */ | |
| 117 | void setExceptionHandler(ReceivingApplicationExceptionHandler exceptionHandler); | |
| 118 | ||
| 119 | /** | |
| 120 | * <p>Encapsulates the message fields used for routing of messages from the | |
| 121 | * HL7 protocol to the appropriate <code>Application</code>. </p> | |
| 122 | * <p/> | |
| 123 | * <p>The wildcard "*" in any member indicates all values of the associated parameter. For | |
| 124 | * example the conbination "ADT", "*", "*", "*" means all ADT messages. Each value can also | |
| 125 | * be a regular expression that is matched against the corresponding field. </p> | |
| 126 | * | |
| 127 | * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a> | |
| 128 | */ | |
| 129 | public static interface AppRoutingData { | |
| 130 | ||
| 131 | /** | |
| 132 | * @return MSH-9-1 | |
| 133 | */ | |
| 134 | public String getMessageType(); | |
| 135 | ||
| 136 | /** | |
| 137 | * @return MSH-9-2 | |
| 138 | */ | |
| 139 | public String getTriggerEvent(); | |
| 140 | ||
| 141 | /** | |
| 142 | * @return MSH-11-1 | |
| 143 | */ | |
| 144 | public String getProcessingId(); | |
| 145 | ||
| 146 | /** | |
| 147 | * @return MSH-12 | |
| 148 | */ | |
| 149 | public String getVersion(); | |
| 150 | } | |
| 151 | ||
| 152 | } |