001package org.hl7.fhir.dstu3.terminologies;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
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011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
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017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
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030 */
031
032
033
034import org.hl7.fhir.dstu3.model.CodeSystem.ConceptDefinitionComponent;
035import org.hl7.fhir.dstu3.model.OperationOutcome.IssueSeverity;
036import org.hl7.fhir.dstu3.model.ValueSet;
037import org.hl7.fhir.dstu3.model.ValueSet.ConceptSetComponent;
038import org.hl7.fhir.dstu3.model.ValueSet.ValueSetExpansionComponent;
039import org.hl7.fhir.dstu3.terminologies.ValueSetExpander.ValueSetExpansionOutcome;
040
041
042/**
043 * The value set system has a collection of value sets 
044 * that define code systems, and construct value sets from 
045 * them
046 * 
047 * Large external terminologies - LOINC, Snomed, etc - are too big, and 
048 * trying to represent their definition as a native value set is too 
049 * large. (e.g. LOINC + properties ~ 500MB). So we don't try. Instead.
050 * we assume that there's some external server that provides these 
051 * services, using this interface
052 * 
053 * The FHIR build tool uses http://fhir.healthintersections.com.au for 
054 * these services
055 * 
056 * @author Grahame
057 *
058 */
059public interface ITerminologyServices {
060  /**
061   * return true if the service handles code or value set resolution on the system
062   */
063  public boolean supportsSystem(String system);
064  
065  /** 
066   *  given a system|code, return a definition for it. Nil means not valid
067   */
068  public ConceptDefinitionComponent getCodeDefinition(String system, String code);
069  
070  public class ValidationResult {
071    private IssueSeverity severity;
072    private String message;
073    public ValidationResult(IssueSeverity severity, String message) {
074      super();
075      this.severity = severity;
076      this.message = message;
077    }
078    public IssueSeverity getSeverity() {
079      return severity;
080    }
081    public String getMessage() {
082      return message;
083    }
084
085
086  }
087
088  /**
089   * for this system|code and display, validate the triple against the rules of 
090   * the underlying code system
091   */
092  public ValidationResult validateCode(String system, String code, String display);
093  
094  /**
095   * Expand the value set fragment (system | codes | filters). Note that this 
096   * might fail if the expansion is very large. If the expansion fails, then the 
097   * checkVS will be called instead
098   */
099  public ValueSetExpansionComponent expandVS(ConceptSetComponent inc) throws Exception;
100//  public ValueSet expandVS(ValueSet vs) throws Exception;
101  public ValueSetExpansionOutcome expand(ValueSet vs);
102  
103  /**
104   * Test the value set fragment (system | codes | filters). 
105   */
106  public boolean checkVS(ConceptSetComponent vsi, String system, String code);
107  
108  public boolean verifiesSystem(String system);
109
110
111
112}