[507] | 1 | package gov.hhs.fha.nhinc.util.format;
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| 2 |
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| 3 | import org.apache.commons.logging.Log;
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| 4 | import org.apache.commons.logging.LogFactory;
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| 5 |
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| 6 | /**
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| 7 | * Format utility for patient identifiers.
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| 8 | *
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| 9 | * @author Neil Webb
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| 10 | */
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| 11 | public class PatientIdFormatUtil
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| 12 | {
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| 13 | private static Log log = LogFactory.getLog(PatientIdFormatUtil.class);
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| 14 |
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| 15 | /**
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| 16 | * Parse an optionally HL7 encoded patient identifier. If the patient
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| 17 | * identifier is not HL7 encoded, the original id will be returned.
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| 18 | * The format of an HL7 encoded patient id is
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| 19 | * "<id>^^^&<home coummunity id>&ISO"
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| 20 | *
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| 21 | * @param receivedPatientId Optionally HL7 encoded patient identifier
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| 22 | * @return Parsed patient id
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| 23 | */
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| 24 | public static String parsePatientId(String receivedPatientId)
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| 25 | {
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| 26 | log.debug("Parsing patient id: " + receivedPatientId);
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| 27 | String patientId = receivedPatientId;
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| 28 | if ((patientId != null) && (patientId.length() > 0))
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| 29 | {
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| 30 | // In some cases we see a quote - in others we do not. So lets strip them off if we see them.
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| 31 | //---------------------------------------------------------------------------------------------
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| 32 | if ((patientId.startsWith("'")) && (patientId.length() > 1))
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| 33 | {
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| 34 | StringBuffer sbPatientId = new StringBuffer(patientId);
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| 35 | if (patientId.endsWith("'"))
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| 36 | {
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| 37 | sbPatientId.deleteCharAt(sbPatientId.length() - 1); // strip off the ending quote
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| 38 | }
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| 39 | sbPatientId.deleteCharAt(0); // strip off hte first char quote
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| 40 |
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| 41 | patientId = sbPatientId.toString();
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| 42 | }
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| 43 |
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| 44 | int componentIndex = patientId.indexOf("^");
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| 45 | log.debug("Index: " + componentIndex);
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| 46 | if (componentIndex != -1)
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| 47 | {
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| 48 | patientId = patientId.substring(0, componentIndex);
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| 49 | log.debug("Parsed patient id: " + patientId);
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| 50 | }
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| 51 | }
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| 52 | return patientId;
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| 53 | }
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| 54 |
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| 55 | /**
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| 56 | * Parse an optionally HL7 encoded community id. If the patient
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| 57 | * identifier is not HL7 encoded, null will be returned.
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| 58 | * The format of an HL7 encoded patient id is
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| 59 | * "<id>^^^&<home coummunity id>&ISO"
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| 60 | *
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| 61 | * @param encodedPatientId Optionally HL7 encoded patient identifier
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| 62 | * @return Parsed community id
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| 63 | */
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| 64 | public static String parseCommunityId(String encodedPatientId)
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| 65 | {
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| 66 | log.debug("Parsing community id: " + encodedPatientId);
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| 67 | String communityId = null;
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| 68 | if ((encodedPatientId != null) && (encodedPatientId.length() > 0))
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| 69 | {
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| 70 | String workingCommunityId = encodedPatientId;
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| 71 | // In some cases we see a quote - in others we do not. So lets strip them off if we see them.
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| 72 | //---------------------------------------------------------------------------------------------
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| 73 | if ((workingCommunityId.startsWith("'")) && (workingCommunityId.length() > 1))
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| 74 | {
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| 75 | StringBuffer sbCommunityId = new StringBuffer(workingCommunityId);
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| 76 | if (workingCommunityId.endsWith("'"))
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| 77 | {
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| 78 | sbCommunityId.deleteCharAt(sbCommunityId.length() - 1); // strip off the ending quote
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| 79 | }
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| 80 | sbCommunityId.deleteCharAt(0); // strip off hte first char quote
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| 81 |
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| 82 | workingCommunityId = sbCommunityId.toString();
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| 83 | }
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| 84 |
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| 85 | // First remove the first components
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| 86 | int componentIndex = workingCommunityId.lastIndexOf("^");
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| 87 | log.debug("Index: " + componentIndex);
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| 88 | if ((componentIndex != -1) && (workingCommunityId.length() > (componentIndex + 1)))
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| 89 | {
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| 90 | workingCommunityId = workingCommunityId.substring(componentIndex + 1);
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| 91 | log.debug("Working community id after first components removed: " + workingCommunityId);
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| 92 |
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| 93 | if(workingCommunityId.startsWith("&"))
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| 94 | {
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| 95 | workingCommunityId = workingCommunityId.substring(1);
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| 96 | }
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| 97 | int subComponentIndex = workingCommunityId.indexOf("&");
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| 98 | if(subComponentIndex != -1)
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| 99 | {
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| 100 | workingCommunityId = workingCommunityId.substring(0, subComponentIndex);
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| 101 | }
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| 102 | communityId = workingCommunityId;
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| 103 | }
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| 104 | }
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| 105 | return communityId;
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | * HL7 encode a patient identifier. The resulting format will be:
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| 110 | * "<id>^^^&<home coummunity id>&ISO"
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| 111 | *
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| 112 | * @param patientId Patient identifier
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| 113 | * @param homeCommunityId Home community id
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| 114 | * @return HL7 encoded patient id
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| 115 | */
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| 116 | public static String hl7EncodePatientId(String patientId, String homeCommunityId)
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| 117 | {
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| 118 | // Sometimes the homeCommunityId is prepended with "urn:oid:" for various reasons. We do not
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| 119 | // want that included when putting together the Patient ID. If it is there, we need to
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| 120 | // strip it off.
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| 121 | //---------------------------------------------------------------------------------------------
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| 122 | String sLocalHomeCommunityId = homeCommunityId;
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| 123 | if (homeCommunityId.startsWith("urn:oid:"))
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| 124 | {
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| 125 | sLocalHomeCommunityId = sLocalHomeCommunityId.substring("urn:oid:".length());
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| 126 | }
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| 127 | String encodedPatientId = null;
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| 128 | log.debug("Creating HL7 encoded patient id for patient id: " + patientId + ", home community id: " + sLocalHomeCommunityId);
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| 129 | if (patientId != null)
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| 130 | {
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| 131 | encodedPatientId = "'" + patientId + "^^^&" + sLocalHomeCommunityId + "&ISO" + "'";
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| 132 | log.debug("HL7 encoded patient id: " + encodedPatientId);
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| 133 | }
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| 134 | return encodedPatientId;
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| 135 | }
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| 136 | }
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