Merge pull request #1554 from hapifhir/2024-01-gg-fix-expand-params

2024 01 gg fix expand params

org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/misc/VSACImporter.java

@@ -23,6 +23,7 @@ import org.hl7.fhir.r4.model.OperationOutcome;
 import org.hl7.fhir.r4.model.OperationOutcome.IssueSeverity;
 import org.hl7.fhir.r4.model.OperationOutcome.IssueType;
 import org.hl7.fhir.r4.model.Parameters;
+import org.hl7.fhir.r4.model.UriType;
 import org.hl7.fhir.r4.model.ValueSet;
 import org.hl7.fhir.r4.model.ValueSet.ValueSetExpansionComponent;
 import org.hl7.fhir.r4.utils.client.FHIRToolingClient;
@@ -122,7 +123,9 @@ public class VSACImporter extends OIDBasedValueSetImporter {
       }
       t = System.currentTimeMillis();
       try {
-        ValueSet vse = fhirToolingClient.expandValueset(vs.getUrl(), null);
+        Parameters p = new Parameters();
+        p.addParameter("url", new UriType(vs.getUrl()));
+        ValueSet vse = fhirToolingClient.expandValueset(vs, p);
         vs.setExpansion(vse.getExpansion());
       } catch (Exception e) {
         errs.put(oid, "Expansion: " +e.getMessage());
@@ -132,9 +135,10 @@ public class VSACImporter extends OIDBasedValueSetImporter {
         Parameters p = new Parameters();
         int offset = vs.getExpansion().getParameter("offset").getValueIntegerType().getValue() + vs.getExpansion().getParameter("count").getValueIntegerType().getValue();
         p.addParameter("offset", offset);
+        p.addParameter("url", new UriType(vs.getUrl()));
         t = System.currentTimeMillis();
         try {
-          ValueSet vse = fhirToolingClient.expandValueset(vs.getUrl(), p);    
+          ValueSet vse = fhirToolingClient.expandValueset(vs, p);    
           vs.getExpansion().getContains().addAll(vse.getExpansion().getContains());
           vs.getExpansion().setParameter(vse.getExpansion().getParameter());
         } catch (Exception e2) {

org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/txClient/TerminologyClientR2.java

@@ -104,10 +104,10 @@ public class TerminologyClientR2 implements ITerminologyClient {
   }
 
   @Override
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) throws FHIRException {
+  public ValueSet expandValueset(ValueSet vs, Parameters p) throws FHIRException {
     org.hl7.fhir.dstu2.model.ValueSet vs2 = (org.hl7.fhir.dstu2.model.ValueSet) VersionConvertorFactory_10_50.convertResource(vs);
     org.hl7.fhir.dstu2.model.Parameters p2 = (org.hl7.fhir.dstu2.model.Parameters) VersionConvertorFactory_10_50.convertResource(p);
-    vs2 = client.expandValueset(vs2, p2, params);
+    vs2 = client.expandValueset(vs2, p2);
     return (ValueSet) VersionConvertorFactory_10_50.convertResource(vs2);
   }
 

org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/txClient/TerminologyClientR3.java

@@ -101,10 +101,10 @@ public class TerminologyClientR3 implements ITerminologyClient {
   }
 
   @Override
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) throws FHIRException {
+  public ValueSet expandValueset(ValueSet vs, Parameters p) throws FHIRException {
     org.hl7.fhir.dstu3.model.ValueSet vs2 = (org.hl7.fhir.dstu3.model.ValueSet) VersionConvertorFactory_30_50.convertResource(vs);
     org.hl7.fhir.dstu3.model.Parameters p2 = (org.hl7.fhir.dstu3.model.Parameters) VersionConvertorFactory_30_50.convertResource(p);
-    vs2 = client.expandValueset(vs2, p2, params); // todo: second parameter
+    vs2 = client.expandValueset(vs2, p2); // todo: second parameter
     return (ValueSet) VersionConvertorFactory_30_50.convertResource(vs2);
   }
 

org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/txClient/TerminologyClientR4.java

@@ -78,14 +78,11 @@ public class TerminologyClientR4 implements ITerminologyClient {
   }
 
   @Override
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) throws FHIRException {
+  public ValueSet expandValueset(ValueSet vs, Parameters p) throws FHIRException {
     org.hl7.fhir.r4.model.ValueSet vs2 = vs == null ? null : (org.hl7.fhir.r4.model.ValueSet) VersionConvertorFactory_40_50.convertResource(vs);
     org.hl7.fhir.r4.model.Parameters p2 = p == null ? null :  (org.hl7.fhir.r4.model.Parameters) VersionConvertorFactory_40_50.convertResource(p);
-    if (params == null) {
-      params = new HashMap<>();
-    }
     try {
-      vs2 = client.expandValueset(vs2, p2, params); // todo: second parameter
+      vs2 = client.expandValueset(vs2, p2); // todo: second parameter
       return (ValueSet) VersionConvertorFactory_40_50.convertResource(vs2);
     } catch (org.hl7.fhir.r4.utils.client.EFhirClientException e) {
       if (e.getServerErrors().size() > 0) {

org.hl7.fhir.dstu2/src/main/java/org/hl7/fhir/dstu2/utils/BaseWorkerContext.java

@@ -48,6 +48,7 @@ import org.hl7.fhir.dstu2.model.Coding;
 import org.hl7.fhir.dstu2.model.ConceptMap;
 import org.hl7.fhir.dstu2.model.Conformance;
 import org.hl7.fhir.dstu2.model.Extension;
+import org.hl7.fhir.dstu2.model.IntegerType;
 import org.hl7.fhir.dstu2.model.Parameters;
 import org.hl7.fhir.dstu2.model.Parameters.ParametersParameterComponent;
 import org.hl7.fhir.dstu2.model.Reference;
@@ -115,11 +116,11 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
   @Override
   public ValueSetExpansionOutcome expandVS(ValueSet vs, boolean cacheOk) {
     try {
-      Map<String, String> params = new HashMap<String, String>();
+      Parameters params = new Parameters();
-      params.put("_limit", "10000");
+      params.addParameter().setName("_limit").setValue(new IntegerType("10000"));
-      params.put("_incomplete", "true");
+      params.addParameter().setName("_incomplete").setValue(new BooleanType("true"));
-      params.put("profile", "http://www.healthintersections.com.au/fhir/expansion/no-details");
+      params.addParameter().setName("profile").setValue(new UriType("http://www.healthintersections.com.au/fhir/expansion/no-details"));
-      ValueSet result = txServer.expandValueset(vs, null, params);
+      ValueSet result = txServer.expandValueset(vs, params);
       return new ValueSetExpansionOutcome(result);
     } catch (Exception e) {
       return new ValueSetExpansionOutcome("Error expanding ValueSet \"" + vs.getUrl() + ": " + e.getMessage());

org.hl7.fhir.dstu2/src/main/java/org/hl7/fhir/dstu2/utils/client/FHIRToolingClient.java

@@ -724,26 +724,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return feed;
   }
 
-  public ValueSet expandValueset(ValueSet source) {
-    recordUse();
-    List<Header> headers = null;
-    ResourceRequest<Resource> result = utils.issuePostRequest(
-        resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
-        utils.getResourceAsByteArray(source, false, isJson(getPreferredResourceFormat())), withVer(getPreferredResourceFormat(), "1.0"),
-        headers, timeoutLong);
-    result.addErrorStatus(410);// gone
-    result.addErrorStatus(404);// unknown
-    result.addErrorStatus(405);
-    result.addErrorStatus(422);// Unprocessable Entity
-    result.addSuccessStatus(200);
-    result.addSuccessStatus(201);
-    if (result.isUnsuccessfulRequest()) {
-      throw new EFhirClientException("Server returned error code " + result.getHttpStatus(),
-          (OperationOutcome) result.getPayload());
-    }
-    return (ValueSet) result.getPayload();
-  }
-
   public Parameters lookupCode(Map<String, String> params) {
     recordUse();
     ResourceRequest<Resource> result = utils.issueGetResourceRequest(
@@ -762,15 +742,13 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return (Parameters) result.getPayload();
   }
 
-  public ValueSet expandValueset(ValueSet source, Parameters expParams, Map<String, String> params) {
+  public ValueSet expandValueset(ValueSet source, Parameters expParams) {
     recordUse();
     List<Header> headers = null;
     Parameters p = expParams == null ? new Parameters() : expParams.copy();
     p.addParameter().setName("valueSet").setResource(source);
-    for (String n : params.keySet())
-      p.addParameter().setName(n).setValue(new StringType(params.get(n)));
     ResourceRequest<Resource> result = utils.issuePostRequest(
-        resourceAddress.resolveOperationUri(ValueSet.class, "expand", params),
+        resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
         utils.getResourceAsByteArray(p, false, isJson(getPreferredResourceFormat())), withVer(getPreferredResourceFormat(), "1.0"),
         headers, 4);
     result.addErrorStatus(410); // gone
@@ -786,22 +764,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return (ValueSet) result.getPayload();
   }
 
-//  public ValueSet expandValueset(ValueSet source, ExpansionProfile profile, Map<String, String> params) {
-//    List<Header> headers = null;
-//    ResourceRequest<Resource> result = utils.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", params), 
-//        utils.getResourceAsByteArray(source, false, isJson(getPreferredResourceFormat())), withVer(getPreferredResourceFormat(), "1.0"), headers, proxy);
-//    result.addErrorStatus(410);//gone
-//    result.addErrorStatus(404);//unknown
-//    result.addErrorStatus(405);
-//    result.addErrorStatus(422);//Unprocessable Entity
-//    result.addSuccessStatus(200);
-//    result.addSuccessStatus(201);
-//    if(result.isUnsuccessfulRequest()) {
-//      throw new EFhirClientException("Server returned error code " + result.getHttpStatus(), (OperationOutcome)result.getPayload());
-//    }
-//    return (ValueSet) result.getPayload();
-//  }
-
   public String getAddress() {
     return base;
   }

org.hl7.fhir.dstu2/src/main/java/org/hl7/fhir/dstu2/utils/client/ResourceAddress.java

@@ -87,7 +87,7 @@ public class ResourceAddress {
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "/" + opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "$" + opName);
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName,

org.hl7.fhir.dstu2016may/src/main/java/org/hl7/fhir/dstu2016may/utils/client/ResourceAddress.java

@@ -87,7 +87,7 @@ public class ResourceAddress {
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "/" + opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "$" + opName);
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName,

org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/context/BaseWorkerContext.java

@@ -60,6 +60,7 @@ import org.hl7.fhir.dstu3.model.Coding;
 import org.hl7.fhir.dstu3.model.ConceptMap;
 import org.hl7.fhir.dstu3.model.DataElement;
 import org.hl7.fhir.dstu3.model.ExpansionProfile;
+import org.hl7.fhir.dstu3.model.IntegerType;
 import org.hl7.fhir.dstu3.model.OperationDefinition;
 import org.hl7.fhir.dstu3.model.OperationOutcome;
 import org.hl7.fhir.dstu3.model.Parameters;
@@ -448,11 +449,12 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     }
 
     try {
-      Map<String, String> params = new HashMap<String, String>();
+      Parameters params = new Parameters();
-      params.put("_limit", Integer.toString(expandCodesLimit));
+      params.addParameter().setName("profile").setResource(expProfile.setIncludeDefinition(false));
-      params.put("_incomplete", "true");
+      params.addParameter().setName("_limit").setValue(new IntegerType(expandCodesLimit));
+      params.addParameter().setName("_incomplete").setValue(new BooleanType("true"));
       tlog("Terminology Server: $expand on " + getVSSummary(vs));
-      ValueSet result = txServer.expandValueset(vs, expProfile.setIncludeDefinition(false), params);
+      ValueSet result = txServer.expandValueset(vs, params);
       return new ValueSetExpansionOutcome(result);
     } catch (Exception e) {
       return new ValueSetExpansionOutcome(

org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/FHIRToolingClient.java

@@ -414,28 +414,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return feed;
   }
 
-  public ValueSet expandValueset(ValueSet source, Parameters expParams) {
-    recordUse();
-    Parameters p = expParams == null ? new Parameters() : expParams.copy();
-    p.addParameter().setName("valueSet").setResource(source);
-    org.hl7.fhir.dstu3.utils.client.network.ResourceRequest<Resource> result = null;
-    try {
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
-        ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())),
-        withVer(getPreferredResourceFormat(), "3.0"),
-        generateHeaders(),
-        "ValueSet/$expand?url=" + source.getUrl(),
-        timeoutExpand);
-      if (result.isUnsuccessfulRequest()) {
-        throw new EFhirClientException("Server returned error code " + result.getHttpStatus(), (OperationOutcome) result.getPayload());
-      }
-    } catch (IOException e) {
-      e.printStackTrace();
-    }
-    return result == null ? null : (ValueSet) result.getPayload();
-  }
-
-
   public Parameters lookupCode(Map<String, String> params) {
     recordUse();
     org.hl7.fhir.dstu3.utils.client.network.ResourceRequest<Resource> result = null;
@@ -454,41 +432,14 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return (Parameters) result.getPayload();
   }
   
-  public ValueSet expandValueset(ValueSet source, ExpansionProfile profile, Map<String, String> params) {
-    recordUse();
-    Parameters p = new Parameters();
-    p.addParameter().setName("valueSet").setResource(source);
-    if (profile != null)
-      p.addParameter().setName("profile").setResource(profile);
 
-    org.hl7.fhir.dstu3.utils.client.network.ResourceRequest<Resource> result = null;
+  public ValueSet expandValueset(ValueSet source, Parameters expParams) {
-    try {
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", params),
-        ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())),
-        withVer(getPreferredResourceFormat(), "3.0"),
-        generateHeaders(),
-        "ValueSet/$expand?url=" + source.getUrl(),
-        timeoutExpand);
-      if (result.isUnsuccessfulRequest()) {
-        throw new EFhirClientException("Server returned error code " + result.getHttpStatus(), (OperationOutcome) result.getPayload());
-      }
-    } catch (IOException e) {
-      e.printStackTrace();
-    }
-    return result == null ? null : (ValueSet) result.getPayload();
-  }
-
-  public ValueSet expandValueset(ValueSet source, Parameters expParams, Map<String, String> params) {
     recordUse();
     Parameters p = expParams == null ? new Parameters() : expParams.copy();
     p.addParameter().setName("valueSet").setResource(source);
-    for (String n : params.keySet()) {
-      p.addParameter().setName(n).setValue(new StringType(params.get(n)));
-    }
     org.hl7.fhir.dstu3.utils.client.network.ResourceRequest<Resource> result = null;
     try {
-
+      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", params),
         ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())),
         withVer(getPreferredResourceFormat(), "3.0"),
         generateHeaders(),

org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/ResourceAddress.java

@@ -93,7 +93,7 @@ public class ResourceAddress {
 	}
 	
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) +"/"+opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) +"$"+opName);
   }
   
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName, Map<String,String> parameters) {

org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/context/BaseWorkerContext.java

@@ -30,6 +30,7 @@ import org.hl7.fhir.r4.model.ConceptMap;
 import org.hl7.fhir.r4.model.Constants;
 import org.hl7.fhir.r4.model.ElementDefinition.ElementDefinitionBindingComponent;
 import org.hl7.fhir.r4.model.ImplementationGuide;
+import org.hl7.fhir.r4.model.IntegerType;
 import org.hl7.fhir.r4.model.MetadataResource;
 import org.hl7.fhir.r4.model.NamingSystem;
 import org.hl7.fhir.r4.model.NamingSystem.NamingSystemIdentifierType;
@@ -403,12 +404,13 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     if (noTerminologyServer)
       return new ValueSetExpansionOutcome("Error expanding ValueSet: running without terminology services",
           TerminologyServiceErrorClass.NOSERVICE);
-    Map<String, String> params = new HashMap<String, String>();
+
-    params.put("_limit", Integer.toString(expandCodesLimit));
+    p.addParameter().setName("_limit").setValue(new IntegerType(expandCodesLimit));
-    params.put("_incomplete", "true");
+    p.addParameter().setName("_incomplete").setValue(new BooleanType("true"));
+    
     tlog("$expand on " + txCache.summary(vs));
     try {
-      ValueSet result = txClient.expandValueset(vs, p, params);
+      ValueSet result = txClient.expandValueset(vs, p);
       res = new ValueSetExpansionOutcome(result).setTxLink(txLog.getLastId());
     } catch (Exception e) {
       res = new ValueSetExpansionOutcome(e.getMessage() == null ? e.getClass().getName() : e.getMessage(),
@@ -463,12 +465,13 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     if (noTerminologyServer)
       return new ValueSetExpansionOutcome("Error expanding ValueSet: running without terminology services",
           TerminologyServiceErrorClass.NOSERVICE);
-    Map<String, String> params = new HashMap<String, String>();
+
-    params.put("_limit", Integer.toString(expandCodesLimit));
+    p.addParameter().setName("_limit").setValue(new IntegerType(expandCodesLimit));
-    params.put("_incomplete", "true");
+    p.addParameter().setName("_incomplete").setValue(new BooleanType("true"));
+    
     tlog("$expand on " + txCache.summary(vs));
     try {
-      ValueSet result = txClient.expandValueset(vs, p, params);
+      ValueSet result = txClient.expandValueset(vs, p);
       if (result != null) {
         if (!result.hasUrl())
           result.setUrl(vs.getUrl());

org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/terminologies/TerminologyClient.java

@@ -43,7 +43,7 @@ public interface TerminologyClient {
 
   public TerminologyCapabilities getTerminologyCapabilities() throws FHIRException;
 
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) throws FHIRException;
+  public ValueSet expandValueset(ValueSet vs, Parameters p) throws FHIRException;
 
   public Parameters validateCS(Parameters pin) throws FHIRException;
 

org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/terminologies/TerminologyClientR4.java

@@ -63,8 +63,8 @@ public class TerminologyClientR4 implements TerminologyClient {
   }
 
   @Override
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) {
+  public ValueSet expandValueset(ValueSet vs, Parameters p) {
-    return client.expandValueset(vs, p, params);
+    return client.expandValueset(vs, p);
   }
 
   @Override

org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/utils/client/FHIRToolingClient.java

@@ -403,55 +403,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return feed;
   }
 
-  public ValueSet expandValueset(String vsUrl, Parameters expParams) {
-    recordUse();
-    Map<String, String> parameters = new HashMap<>();
-    parameters.put("url", vsUrl);
-    if (expParams != null) {
-      for (ParametersParameterComponent p : expParams.getParameter()) {
-        if (p.getValue() == null) {
-          throw new FHIRException("Non-value Parameters are not supported for parameter '"+p.getName()+"'");
-        } else if (p.getValue() instanceof PrimitiveType) {
-          parameters.put(p.getName(), p.getValue().primitiveValue());        
-        } else {
-          throw new FHIRException("Complex Parameters are not supported for parameter '"+p.getName()+"'");
-        }
-      }
-    }
-
-    org.hl7.fhir.r4.utils.client.network.ResourceRequest<Resource> result = null;
-      try {
-        result = client.issueGetResourceRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", parameters),
-            withVer(getPreferredResourceFormat(), "4.0"), generateHeaders(), "ValueSet/$expand?url=" + vsUrl, timeoutExpand);
-      } catch (IOException e) {
-        throw new FHIRException(e);
-      }
-      if (result.isUnsuccessfulRequest()) {
-        throw new EFhirClientException("Server returned error code " + result.getHttpStatus(),
-            (OperationOutcome) result.getPayload());
-      }
-    return result == null ? null : (ValueSet) result.getPayload();
-  }
-
-  public ValueSet expandValueset(ValueSet source, Parameters expParams) {
-    recordUse();
-    Parameters p = expParams == null ? new Parameters() : expParams.copy();
-    p.addParameter().setName("valueSet").setResource(source);
-    org.hl7.fhir.r4.utils.client.network.ResourceRequest<Resource> result = null;
-    try {
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
-          ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())), withVer(getPreferredResourceFormat(), "4.0"),
-          generateHeaders(), "ValueSet/$expand?url=" + source.getUrl(), timeoutExpand);
-      if (result.isUnsuccessfulRequest()) {
-        throw new EFhirClientException("Server returned error code " + result.getHttpStatus(),
-            (OperationOutcome) result.getPayload());
-      }
-    } catch (IOException e) {
-      throw new FHIRException(e);
-    }
-    return result == null ? null : (ValueSet) result.getPayload();
-  }
-
   public Parameters lookupCode(Map<String, String> params) {
     recordUse();
     org.hl7.fhir.r4.utils.client.network.ResourceRequest<Resource> result = null;
@@ -468,18 +419,13 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return (Parameters) result.getPayload();
   }
   
-  public ValueSet expandValueset(ValueSet source, Parameters expParams, Map<String, String> params) {
+  public ValueSet expandValueset(ValueSet source, Parameters expParams) {
     recordUse();
     Parameters p = expParams == null ? new Parameters() : expParams.copy();
     p.addParameter().setName("valueSet").setResource(source);
-    if (params != null) {
-      for (String n : params.keySet()) {
-        p.addParameter().setName(n).setValue(new StringType(params.get(n)));
-      }
-    }
     org.hl7.fhir.r4.utils.client.network.ResourceRequest<Resource> result = null;
     try {
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", params),
+      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand"),
           ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())), withVer(getPreferredResourceFormat(), "4.0"),
           generateHeaders(), source == null ? "ValueSet/$expand" : "ValueSet/$expand?url=" + source.getUrl(),
               timeoutExpand);

org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/utils/client/ResourceAddress.java

@@ -88,7 +88,7 @@ public class ResourceAddress {
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "/" + opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "$" + opName);
   }
 
   public <T extends Resource> URI resolveGetResource(Class<T> resourceClass, String id) {

org.hl7.fhir.r4b/src/main/java/org/hl7/fhir/r4b/utils/client/ResourceAddress.java

@@ -87,7 +87,7 @@ public class ResourceAddress {
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "/" + opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) + "$" + opName);
   }
 
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName,

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/BaseWorkerContext.java

@@ -78,6 +78,7 @@ import org.hl7.fhir.r5.model.ElementDefinition.ElementDefinitionBindingComponent
 import org.hl7.fhir.r5.model.Enumerations.PublicationStatus;
 import org.hl7.fhir.r5.model.IdType;
 import org.hl7.fhir.r5.model.Identifier;
+import org.hl7.fhir.r5.model.IntegerType;
 import org.hl7.fhir.r5.model.ImplementationGuide;
 import org.hl7.fhir.r5.model.Library;
 import org.hl7.fhir.r5.model.Measure;
@@ -101,9 +102,7 @@ import org.hl7.fhir.r5.model.StringType;
 import org.hl7.fhir.r5.model.StructureDefinition;
 import org.hl7.fhir.r5.model.StructureDefinition.TypeDerivationRule;
 import org.hl7.fhir.r5.model.StructureMap;
-import org.hl7.fhir.r5.model.TerminologyCapabilities;
+
-import org.hl7.fhir.r5.model.TerminologyCapabilities.TerminologyCapabilitiesCodeSystemComponent;
-import org.hl7.fhir.r5.model.TerminologyCapabilities.TerminologyCapabilitiesExpansionParameterComponent;
 import org.hl7.fhir.r5.model.UriType;
 import org.hl7.fhir.r5.model.UrlType;
 import org.hl7.fhir.r5.model.ValueSet;
@@ -129,7 +128,6 @@ import org.hl7.fhir.r5.terminologies.utilities.TerminologyCache.SourcedValueSet;
 import org.hl7.fhir.r5.terminologies.validation.VSCheckerException;
 import org.hl7.fhir.r5.terminologies.validation.ValueSetValidator;
 import org.hl7.fhir.r5.terminologies.ValueSetUtilities;
-import org.hl7.fhir.r5.terminologies.client.TerminologyClientR5.TerminologyClientR5Factory;
 import org.hl7.fhir.r5.terminologies.client.TerminologyClientManager;
 import org.hl7.fhir.r5.terminologies.client.TerminologyClientContext;
 import org.hl7.fhir.r5.utils.PackageHackerR5;
@@ -138,7 +136,6 @@ import org.hl7.fhir.r5.utils.ToolingExtensions;
 import org.hl7.fhir.r5.utils.client.EFhirClientException;
 import org.hl7.fhir.r5.utils.validation.ValidationContextCarrier;
 import org.hl7.fhir.utilities.FhirPublication;
-import org.hl7.fhir.utilities.TextFile;
 import org.hl7.fhir.utilities.TimeTracker;
 import org.hl7.fhir.utilities.ToolingClientLogger;
 import org.hl7.fhir.utilities.TranslationServices;
@@ -874,7 +871,7 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     }
 
     try {
-      ValueSet result = tc.getClient().expandValueset(vs, p, null);
+      ValueSet result = tc.getClient().expandValueset(vs, p);
       res = new ValueSetExpansionOutcome(result).setTxLink(txLog.getLastId());  
     } catch (Exception e) {
       res = new ValueSetExpansionOutcome(e.getMessage() == null ? e.getClass().getName() : e.getMessage(), TerminologyServiceErrorClass.UNKNOWN, true);
@@ -915,7 +912,8 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     }
     
     Parameters p = pIn.copy();
-
+    p.setParameter("_limit",new IntegerType("10000"));
+    p.setParameter("_incomplete", new BooleanType("true"));
     if (vs.hasExpansion()) {
       return new ValueSetExpansionOutcome(vs.copy());
     }
@@ -985,7 +983,7 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
     txLog("$expand on "+txCache.summary(vs)+" on "+tc.getAddress());
     
     try {
-      ValueSet result = tc.getClient().expandValueset(vs, p, null);
+      ValueSet result = tc.getClient().expandValueset(vs, p);
       if (result != null) {
         if (!result.hasUrl()) {
           result.setUrl(vs.getUrl());

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/client/ITerminologyClient.java

@@ -51,7 +51,7 @@ public interface ITerminologyClient {
   String getAddress();
   String getServerVersion();
   TerminologyCapabilities getTerminologyCapabilities() throws FHIRException;
-  ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) throws FHIRException;
+  ValueSet expandValueset(ValueSet vs, Parameters p) throws FHIRException;
   Parameters validateCS(Parameters pin) throws FHIRException;
   Parameters validateVS(Parameters pin) throws FHIRException;
   ITerminologyClient setTimeoutFactor(int i) throws FHIRException;

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/client/TerminologyClientR5.java

@@ -126,8 +126,8 @@ public class TerminologyClientR5 implements ITerminologyClient {
   }
 
   @Override
-  public ValueSet expandValueset(ValueSet vs, Parameters p, Map<String, String> params) {
+  public ValueSet expandValueset(ValueSet vs, Parameters p) {
-    return client.expandValueset(vs, p, params);
+    return client.expandValueset(vs, p);
   }
 
   @Override

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/client/FHIRToolingClient.java

@@ -470,7 +470,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return result == null ? null : (ValueSet) result.getPayload();
   }
 
-
   public Parameters lookupCode(Map<String, String> params) {
     recordUse();
     org.hl7.fhir.r5.utils.client.network.ResourceRequest<Resource> result = null;
@@ -489,36 +488,6 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     return (Parameters) result.getPayload();
   }
 
-  public ValueSet expandValueset(ValueSet source, Parameters expParams, Map<String, String> params) {
-    recordUse();
-    Parameters p = expParams == null ? new Parameters() : expParams.copy();
-    if (source != null) {
-      p.addParameter().setName("valueSet").setResource(source);
-    }
-    if (params == null) {
-      params = new HashMap<>();
-    }
-    for (String n : params.keySet()) {
-      p.addParameter().setName(n).setValue(new StringType(params.get(n)));
-    }
-    org.hl7.fhir.r5.utils.client.network.ResourceRequest<Resource> result = null;
-    try {
-
-      result = client.issuePostRequest(resourceAddress.resolveOperationUri(ValueSet.class, "expand", params),
-        ByteUtils.resourceToByteArray(p, false, isJson(getPreferredResourceFormat())),
-        withVer(getPreferredResourceFormat(), "4.0"),
-        generateHeaders(),
-        source == null ? "ValueSet/$expand" : "ValueSet/$expand?url=" + source.getUrl(),
-        timeoutExpand);
-      if (result.isUnsuccessfulRequest()) {
-        throw new EFhirClientException("Server returned error code " + result.getHttpStatus(), (OperationOutcome) result.getPayload());
-      }
-    } catch (IOException e) {
-      e.printStackTrace();
-    }
-    return result == null ? null : (ValueSet) result.getPayload();
-  }
-
   public String getAddress() {
     return base;
   }

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/client/ResourceAddress.java

@@ -101,7 +101,7 @@ public class ResourceAddress {
 	}
 	
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName) {
-    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) +"/"+opName);
+    return baseServiceUri.resolve(nameForClassWithSlash(resourceClass) +"$"+opName);
   }
   
   public <T extends Resource> URI resolveOperationUri(Class<T> resourceClass, String opName, Map<String,String> parameters) {

org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/context/SimpleWorkerContextTests.java

@@ -101,12 +101,6 @@ public class SimpleWorkerContextTests {
     context.txLog = txLog;
   }
 
-  private final static Map<String, String> params = new HashMap<>();
-  static {
-    params.put("_limit", Integer.toString(1000));
-    params.put("_incomplete", "true");
-  }
-
   private final static Parameters pInWithDependentResources = new Parameters();
   static {
     pInWithDependentResources.addParameter("includeDefinition", false);
@@ -302,7 +296,7 @@ public class SimpleWorkerContextTests {
 
     Mockito.verify(terminologyCache).getExpansion(cacheToken);
     Mockito.verify(terminologyCache, times(0)).cacheExpansion(any(), any(), anyBoolean());
-    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any(), any());
+    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any());
   }
 
   @Test
@@ -327,7 +321,7 @@ public class SimpleWorkerContextTests {
 
 
     Mockito.doReturn(expectedValueSet).when(terminologyClient).expandValueset(argThat(new ValueSetMatcher(vs)),
-      argThat(new ParametersMatcher(pInWithDependentResources)), eq(params));
+      argThat(new ParametersMatcher(pInWithDependentResources)));
 
     ValueSetExpansionOutcome actualExpansionResult = context.expandVS(inc, true, false);
 
@@ -354,7 +348,7 @@ public class SimpleWorkerContextTests {
 
     Mockito.verify(terminologyCache).getExpansion(cacheToken);
     Mockito.verify(terminologyCache, times(0)).cacheExpansion(any(), any(), anyBoolean());
-    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any(), any());
+    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any());
   }
 
   private class ValidationOptionsFhirPublicationMatcher implements ArgumentMatcher<ValidationOptions> {
@@ -393,7 +387,7 @@ public class SimpleWorkerContextTests {
 
     Mockito.verify(terminologyCache).getExpansion(cacheToken);
     Mockito.verify(terminologyCache).cacheExpansion(cacheToken, actualExpansionResult, false);
-    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any(), any());
+    Mockito.verify(terminologyClient, times(0)).expandValueset(any(), any());
   }
 
   @Test
@@ -414,7 +408,7 @@ public class SimpleWorkerContextTests {
 
     Mockito.doReturn(valueSetExpanderSimple).when(context).constructValueSetExpanderSimple(argThat(new ValidationOptionsFhirPublicationMatcher(vs.getFHIRPublicationVersion())));
 
-    Mockito.doReturn(expectedValueSet).when(terminologyClient).expandValueset(eq(vs), argThat(new ParametersMatcher(pInWithDependentResources)), eq(params));
+    Mockito.doReturn(expectedValueSet).when(terminologyClient).expandValueset(eq(vs), argThat(new ParametersMatcher(pInWithDependentResources)));
 
     ValueSetExpansionOutcome actualExpansionResult = context.expandVS(vs, true,  true, true, pIn, false);
 

org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/special/TxTester.java

@@ -256,7 +256,7 @@ public class TxTester {
     p.getParameter().addAll(profile.getParameter());
     String vsj;
     try {
-      ValueSet vs = tx.expandValueset(null, p, null);
+      ValueSet vs = tx.expandValueset(null, p);
       TxTesterScrubbers.scrubVS(vs, tight);
       TxTesterSorters.sortValueSet(vs);
       vsj = new org.hl7.fhir.r5.formats.JsonParser().setOutputStyle(OutputStyle.PRETTY).composeString(vs);