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package org.hl7.fhir.dstu3.context;
import org.hl7.fhir.dstu3.formats.IParser;
import org.hl7.fhir.dstu3.formats.ParserType;
import org.hl7.fhir.dstu3.model.*;
import org.hl7.fhir.dstu3.model.CodeSystem.ConceptDefinitionComponent;
import org.hl7.fhir.dstu3.model.ValueSet.ConceptSetComponent;
import org.hl7.fhir.dstu3.model.ValueSet.ValueSetExpansionComponent;
import org.hl7.fhir.dstu3.terminologies.ValueSetExpander.TerminologyServiceErrorClass;
import org.hl7.fhir.dstu3.terminologies.ValueSetExpander.ValueSetExpansionOutcome;
import org.hl7.fhir.dstu3.utils.INarrativeGenerator;
import org.hl7.fhir.exceptions.FHIRException;
import org.hl7.fhir.exceptions.TerminologyServiceException;
import org.hl7.fhir.utilities.validation.ValidationMessage.IssueSeverity;
import java.util.List;
import java.util.Set;
/**
* This is the standard interface used for access to underlying FHIR
* services through the tools and utilities provided by the reference
* implementation.
*
* The functionality it provides is
* - get access to parsers, validators, narrative builders etc
* (you can't create these directly because they need access
* to the right context for their information)
*
* - find resources that the tools need to carry out their tasks
*
* - provide access to terminology services they need.
* (typically, these terminology service requests are just
* passed through to the local implementation's terminology
* service)
*
* @author Grahame
*/
public interface IWorkerContext {
/**
* Get the versions of the definitions loaded in context
* @return
*/
public String getVersion();
// -- Parsers (read and write instances) ----------------------------------------
/**
* Get a parser to read/write instances. Use the defined type (will be extended
* as further types are added, though the only currently anticipate type is RDF)
*
* XML/JSON - the standard renderers
* XHTML - render the narrative only (generate it if necessary)
*
* @param type
* @return
*/
public IParser getParser(ParserType type);
/**
* Get a parser to read/write instances. Determine the type
* from the stated type. Supported value for type:
* - the recommended MIME types
* - variants of application/xml and application/json
* - _format values xml, json
*
* @param type
* @return
*/
public IParser getParser(String type);
/**
* Get a JSON parser
*
* @return
*/
public IParser newJsonParser();
/**
* Get an XML parser
*
* @return
*/
public IParser newXmlParser();
/**
* Get a generator that can generate narrative for the instance
*
* @return a prepared generator
*/
public INarrativeGenerator getNarrativeGenerator(String prefix, String basePath);
// -- resource fetchers ---------------------------------------------------
/**
* Find an identified resource. The most common use of this is to access the the
* standard conformance resources that are part of the standard - structure
* definitions, value sets, concept maps, etc.
*
* Also, the narrative generator uses this, and may access any kind of resource
*
* The URI is called speculatively for things that might exist, so not finding
* a matching resouce, return null, not an error
*
* The URI can have one of 3 formats:
* - a full URL e.g. http://acme.org/fhir/ValueSet/[id]
* - a relative URL e.g. ValueSet/[id]
* - a logical id e.g. [id]
*
* It's an error if the second form doesn't agree with class_. It's an
* error if class_ is null for the last form
*
* @return
* @throws FHIRException
* @throws Exception
*/
public T fetchResource(Class class_, String uri);
public T fetchResourceWithException(Class class_, String uri) throws FHIRException;
/**
* find whether a resource is available.
*
* Implementations of the interface can assume that if hasResource ruturns
* true, the resource will usually be fetched subsequently
*
* @param class_
* @param uri
* @return
*/
public boolean hasResource(Class class_, String uri);
// -- profile services ---------------------------------------------------------
public List getResourceNames();
public List getTypeNames();
public List allStructures();
public List allConformanceResources();
// -- Terminology services ------------------------------------------------------
public ExpansionProfile getExpansionProfile();
public void setExpansionProfile(ExpansionProfile expProfile);
// these are the terminology services used internally by the tools
/**
* Find the code system definition for the nominated system uri.
* return null if there isn't one (then the tool might try
* supportsSystem)
*
* @param system
* @return
*/
public CodeSystem fetchCodeSystem(String system);
/**
* True if the underlying terminology service provider will do
* expansion and code validation for the terminology. Corresponds
* to the extension
*
* http://hl7.org/fhir/StructureDefinition/capabilitystatement-supported-system
*
* in the Conformance resource
*
* @param system
* @return
* @throws Exception
*/
public boolean supportsSystem(String system) throws TerminologyServiceException;
/**
* find concept maps for a source
* @param url
* @return
*/
public List findMapsForSource(String url);
/**
* ValueSet Expansion - see $expand
*
* @param source
* @return
*/
public ValueSetExpansionOutcome expandVS(ValueSet source, boolean cacheOk, boolean heiarchical);
/**
* Value set expanion inside the internal expansion engine - used
* for references to supported system (see "supportsSystem") for
* which there is no value set.
*
* @param inc
* @return
* @throws FHIRException
*/
public ValueSetExpansionComponent expandVS(ConceptSetComponent inc, boolean heiarchical) throws TerminologyServiceException;
public class ValidationResult {
private ConceptDefinitionComponent definition;
private IssueSeverity severity;
private String message;
private TerminologyServiceErrorClass errorClass;
public ValidationResult(IssueSeverity severity, String message) {
this.severity = severity;
this.message = message;
}
public ValidationResult(ConceptDefinitionComponent definition) {
this.definition = definition;
}
public ValidationResult(IssueSeverity severity, String message, ConceptDefinitionComponent definition) {
this.severity = severity;
this.message = message;
this.definition = definition;
}
public ValidationResult(IssueSeverity severity, String message, TerminologyServiceErrorClass errorClass) {
this.severity = severity;
this.message = message;
this.errorClass = errorClass;
}
public boolean isOk() {
return definition != null;
}
public String getDisplay() {
// We don't want to return question-marks because that prevents something more useful from being displayed (e.g. the code) if there's no display value
// return definition == null ? "??" : definition.getDisplay();
return definition == null ? null : definition.getDisplay();
}
public ConceptDefinitionComponent asConceptDefinition() {
return definition;
}
public IssueSeverity getSeverity() {
return severity;
}
public String getMessage() {
return message;
}
public boolean IsNoService() {
return errorClass == TerminologyServiceErrorClass.NOSERVICE;
}
public TerminologyServiceErrorClass getErrorClass() {
return errorClass;
}
}
/**
* Validation of a code - consult the terminology service
* to see whether it is known. If known, return a description of it
*
* note: always return a result, with either an error or a code description
*
* corresponds to 2 terminology service calls: $validate-code and $lookup
*
* @param system
* @param code
* @param display
* @return
*/
public ValidationResult validateCode(String system, String code, String display);
/**
* Validation of a code - consult the terminology service
* to see whether it is known. If known, return a description of it
* Also, check whether it's in the provided value set
*
* note: always return a result, with either an error or a code description, or both (e.g. known code, but not in the value set)
*
* corresponds to 2 terminology service calls: $validate-code and $lookup
*
* @param system
* @param code
* @param display
* @return
*/
public ValidationResult validateCode(String system, String code, String display, ValueSet vs);
public ValidationResult validateCode(Coding code, ValueSet vs);
public ValidationResult validateCode(CodeableConcept code, ValueSet vs);
/**
* Validation of a code - consult the terminology service
* to see whether it is known. If known, return a description of it
* Also, check whether it's in the provided value set fragment (for supported systems with no value set definition)
*
* note: always return a result, with either an error or a code description, or both (e.g. known code, but not in the value set)
*
* corresponds to 2 terminology service calls: $validate-code and $lookup
*
* @param system
* @param code
* @param display
* @return
*/
public ValidationResult validateCode(String system, String code, String display, ConceptSetComponent vsi);
/**
* returns the recommended tla for the type
*
* @param name
* @return
*/
public String getAbbreviation(String name);
// return a set of types that have tails
public Set typeTails();
public String oid2Uri(String code);
public boolean hasCache();
public interface ILoggingService {
public enum LogCategory {
PROGRESS, TX, INIT, CONTEXT, HTML
}
public void logMessage(String message); // status messages, always display
public void logDebugMessage(LogCategory category, String message); // verbose; only when debugging
}
public void setLogger(ILoggingService logger);
public boolean isNoTerminologyServer();
}
