/
CodeSystemResourceProvider.java
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/
CodeSystemResourceProvider.java
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package org.openconceptlab.fhir.provider;
import ca.uhn.fhir.rest.annotation.*;
import ca.uhn.fhir.rest.api.server.RequestDetails;
import ca.uhn.fhir.rest.server.IResourceProvider;
import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
import ca.uhn.fhir.rest.server.exceptions.ResourceNotFoundException;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import org.hl7.fhir.instance.model.api.IBaseResource;
import org.hl7.fhir.r4.model.*;
import org.openconceptlab.fhir.converter.CodeSystemConverter;
import org.openconceptlab.fhir.model.*;
import org.openconceptlab.fhir.repository.*;
import org.openconceptlab.fhir.util.OclFhirUtil;
import static org.openconceptlab.fhir.util.OclFhirUtil.*;
import static org.openconceptlab.fhir.util.OclFhirConstants.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.transaction.Transactional;
import java.util.*;
import java.util.stream.Collectors;
/**
* The CodeSystemResourceProvider.
* @author harpatel1
*/
@Component
public class CodeSystemResourceProvider implements IResourceProvider {
SourceRepository sourceRepository;
CodeSystemConverter codeSystemConverter;
OclFhirUtil oclFhirUtil;
@Autowired
public CodeSystemResourceProvider(SourceRepository sourceRepository, CodeSystemConverter codeSystemConverter, OclFhirUtil oclFhirUtil) {
this.sourceRepository = sourceRepository;
this.codeSystemConverter = codeSystemConverter;
this.oclFhirUtil = oclFhirUtil;
}
@Override
public Class<? extends IBaseResource> getResourceType() {
return CodeSystem.class;
}
/**
* Returns all public {@link CodeSystem}.
*
* @return {@link Bundle}
*/
@Search()
@Transactional
public Bundle searchCodeSystems(RequestDetails details) {
List<Source> sources = filterHead(getSources(publicAccess));
List<CodeSystem> codeSystems = codeSystemConverter.convertToCodeSystem(sources, false, 0);
return OclFhirUtil.getBundle(codeSystems, details.getFhirServerBase(), details.getRequestPath());
}
/**
* Returns public {@link CodeSystem} for a given Url.
* @param url
* @param version
* @return {@link Bundle}
*/
@Search
@Transactional
public Bundle searchCodeSystemByUrl(@RequiredParam(name = CodeSystem.SP_URL) StringType url,
@OptionalParam(name = VERSION) StringType version,
@OptionalParam(name = PAGE) StringType page,
RequestDetails details) {
List<Source> sources = filterHead(getSourceByUrl(url, version, publicAccess));
boolean includeConcepts = !isValid(version) || !isVersionAll(version);
List<CodeSystem> codeSystems = codeSystemConverter.convertToCodeSystem(sources, includeConcepts,
getPage(page));
return OclFhirUtil.getBundle(codeSystems, details.getFhirServerBase(), details.getRequestPath());
}
/**
* Returns all public {@link CodeSystem} for a given owner.
* @param owner
* @return {@link Bundle}
*/
@Search
@Transactional
public Bundle searchCodeSystemByOwner(@RequiredParam(name = OWNER) StringType owner,
RequestDetails details) {
List<Source> sources = filterHead(getSourceByOwner(owner, publicAccess));
List<CodeSystem> codeSystems = codeSystemConverter.convertToCodeSystem(sources, false, 0);
return OclFhirUtil.getBundle(codeSystems, details.getFhirServerBase(), details.getRequestPath());
}
/**
* Returns public {@link CodeSystem} for a given owner and Id. Returns given version if provided, otherwise
* most recent released version is returned.
* @param owner
* @param id
* @param version
* @return {@link Bundle}
*/
@Search
@Transactional
public Bundle searchCodeSystemByOwnerAndId(@RequiredParam(name = OWNER) StringType owner,
@RequiredParam(name = ID) StringType id,
@OptionalParam(name = VERSION) StringType version,
@OptionalParam(name = PAGE) StringType page,
RequestDetails details) {
List<Source> sources = filterHead(getSourceByOwnerAndIdAndVersion(id, owner, version, publicAccess));
boolean includeConcepts = !isVersionAll(version);
List<CodeSystem> codeSystems = codeSystemConverter.convertToCodeSystem(sources, includeConcepts, getPage(page));
return OclFhirUtil.getBundle(codeSystems, details.getFhirServerBase(), details.getRequestPath());
}
/**
* CodeSystem $lookup operation.
* GET request example:
* <HOST>/fhir/CodeSystem/$lookup?code=#&system=#&version=#&displayLanguage=#
*
* POST request example:
* {
* "resourceType":"Parameters",
* "parameter": [
* {
* "name":"system",
* "valueUri":""
* },
* {
* "name":"code",
* "valueCode":""
* },
* {
* "name":"version",
* "valueString":""
* },
* {
* "name":"displayLanguage",
* "valueCode":""
* }
* ]
* }
*
* @param code - (Mandatory) Code that is to be located
* @param system - (Mandatory) System for the code that is to be located
* @param version - (Optional) The version of system
* @param displayLanguage - (Optional) The display language
* @return Parameters
*/
@Operation(name = LOOKUP, idempotent = true)
@Transactional
public Parameters codeSystemLookUp(@OperationParam(name = CODE, type = CodeType.class, min = 1) CodeType code,
@OperationParam(name = SYSTEM, type = UriType.class, min = 1) UriType system,
@OperationParam(name = VERSION, type = StringType.class) StringType version,
@OperationParam(name = DISP_LANG, type = CodeType.class) CodeType displayLanguage,
@OperationParam(name = OWNER, type = StringType.class) StringType owner) {
validateOperation(code, system, LOOKUP);
Source source = isValid(owner) ? oclFhirUtil.getSourceByOwnerAndUrl(owner, newStringType(system), version, publicAccess) :
getSourceByUrl(newStringType(system), version, publicAccess).get(0);
return codeSystemConverter.getLookupParameters(source, code, displayLanguage);
}
@Operation(name = VALIDATE_CODE, idempotent = true)
@Transactional
public Parameters codeSystemValidateCode(@OperationParam(name = URL, type = UriType.class, min = 1) UriType url,
@OperationParam(name = CODE, type = CodeType.class, min = 1) CodeType code,
@OperationParam(name = VERSION, type = StringType.class) StringType version,
@OperationParam(name = DISPLAY, type = StringType.class) StringType display,
@OperationParam(name = DISP_LANG, type = CodeType.class) CodeType displayLanguage,
@OperationParam(name = CODING, type = Coding.class) Coding coding,
@OperationParam(name = OWNER, type = StringType.class) StringType owner) {
if (coding != null) {
url = new UriType(coding.getSystem());
code = new CodeType(coding.getCode());
version = new StringType(coding.getVersion());
display = new StringType(coding.getDisplay());
}
validateOperation(code, url, VALIDATE_CODE);
Source source = isValid(owner) ? oclFhirUtil.getSourceByOwnerAndUrl(owner, newStringType(url), version, publicAccess) :
getSourceByUrl(newStringType(url), version, publicAccess).get(0);
return codeSystemConverter.validateCode(source, getCode(code), display, displayLanguage);
}
private List<Source> getSources(List<String> access) {
return sourceRepository.findAllMostRecentReleased(access);
}
private List<Source> getSourceByUrl(StringType url, StringType version, List<String> access) {
List<Source> sources = new ArrayList<>();
if (isVersionAll(version)) {
// get all versions
sources.addAll(sourceRepository.findByCanonicalUrlAndPublicAccessIn(url.getValue(), access).stream()
.sorted(Comparator.comparing(Source::getVersion).reversed()).collect(Collectors.toList()));
} else {
final Source source;
if (!isValid(version)) {
// get most recent released version
source = oclFhirUtil.getMostRecentReleasedSourceByUrl(url, access);
} else {
// get a given version
source = sourceRepository.findFirstByCanonicalUrlAndVersionAndPublicAccessIn(url.getValue(), version.getValue(), access);
}
if (source != null) sources.add(source);
}
if (sources.isEmpty())
throw new ResourceNotFoundException(notFound(CodeSystem.class, url, version));
return sources;
}
private List<Source> getSourceByOwner(StringType owner, List<String> access) {
if (!isValid(owner))
return new ArrayList<>();
List<Source> sources = new ArrayList<>();
String ownerType = getOwnerType(owner.getValue());
String value = getOwner(owner.getValue());
if (ORG.equals(ownerType)) {
sources.addAll(sourceRepository.findByOrganizationMnemonicAndPublicAccessIn(value, access));
} else {
sources.addAll(sourceRepository.findByUserIdUsernameAndPublicAccessIn(value, access));
}
Multimap<String, Source> map = ArrayListMultimap.create();
sources.forEach(s -> map.put(s.getMnemonic(), s));
List<Source> filtered = new ArrayList<>();
map.asMap().forEach((k,v) -> {
v.stream().filter(s -> (s.getReleased() != null && s.getReleased())).max(Comparator.comparing(Source::getCreatedAt)).stream().findFirst().ifPresent(filtered::add);
});
return filtered;
}
private List<Source> getSourceByOwnerAndIdAndVersion(StringType id, StringType owner, StringType version, List<String> access) {
List<Source> sources = new ArrayList<>();
String ownerType = getOwnerType(owner.getValue());
String value = getOwner(owner.getValue());
if (isVersionAll(version)) {
// get all versions
if (ORG.equals(ownerType)) {
sources.addAll(sourceRepository.findByMnemonicAndOrganizationMnemonicAndPublicAccessIn(id.getValue(),
value, access));
} else {
sources.addAll(sourceRepository.findByMnemonicAndUserIdUsernameAndPublicAccessIn(id.getValue(),
value, access));
}
} else {
addSourceVersion(id, version, access, sources, ownerType, value);
}
if (sources.isEmpty())
throw new ResourceNotFoundException(notFound(CodeSystem.class, owner, id, version));
return sources;
}
private void addSourceVersion(StringType id, StringType version, List<String> access, List<Source> sources, String ownerType, String ownerId) {
final Source source = oclFhirUtil.getSourceVersion(id, version, access, ownerType, ownerId);
if (source != null) sources.add(source);
}
private List<Source> filterHead(List<Source> sources) {
return sources.stream().filter(s -> !HEAD.equals(s.getVersion())).collect(Collectors.toList());
}
private void validateOperation(CodeType code, UriType system, String operation) {
if (!isValid(code) || !isValid(system)) {
String msg = "Could not perform CodeSystem %s operation, both code and %s parameters are required.";
throw new InvalidRequestException(String.format(msg, operation, LOOKUP.equals(operation) ? SYSTEM : URL));
}
}
}