{{
  "groupHasMemberRequest":{
    "groupLookup":{
      "handle":"someHandle"
    },
    "subjectLookup":{
      "id":"someId"
    }
  }
}

{<groupHasMemberRequest>
  <groupLookup>
    <handle>someHandle</handle>
  </groupLookup>
  <subjectLookup>
    <id>someId</id>
  </subjectLookup>
</groupHasMemberRequest>

package org.jasig.fifer.fiferServer.grouper;

import org.apache.commons.lang.StringUtils;
import org.jasig.fifer.fiferServer.coreapi.GroupHasMemberResponse;
import org.jasig.fifer.fiferServer.coreapi.GroupLookup;
import org.jasig.fifer.fiferServer.coreapi.ResponseMetadata;
import org.jasig.fifer.fiferServer.coreapi.SubjectLookup;
import org.jasig.fifer.fiferServer.group.MembershipImmediacy;
import org.jasig.fifer.fiferServer.logic.FiferGroupLogicInterface;

import edu.internet2.middleware.grouperClient.api.GcHasMember;
import edu.internet2.middleware.grouperClient.ws.WsMemberFilter;
import edu.internet2.middleware.grouperClient.ws.beans.WsHasMemberResults;
import edu.internet2.middleware.grouperClient.ws.beans.WsSubjectLookup;

/**
 * Implement the fifer group service for Grouper
 * @author mchyzer
 *
 */
public class GrouperGroupLogic implements FiferGroupLogicInterface {

  /**
   * convert from handle to group name
   * @param handle
   * @return the group name
   */
  private String convertFromGroupHandleToGroupName(String handle) {
    //TODO translate from handle to group name
    return handle;
  }

  /**
   * @see FiferGroupLogicInterface#hasMember(GroupLookup, SubjectLookup, MembershipImmediacy)
   */
  @Override
  public GroupHasMemberResponse hasMember(GroupLookup groupLookup, SubjectLookup subjectLookup,
      MembershipImmediacy membershipImmediacy) {

    GcHasMember gcHasMember = new GcHasMember();

    {
      if (!StringUtils.isBlank(groupLookup.getId())) {
        gcHasMember.assignGroupUuid(groupLookup.getId());
      }
      if (!StringUtils.isBlank(groupLookup.getHandle())) {
        gcHasMember.assignGroupName(convertFromGroupHandleToGroupName(groupLookup.getHandle()));
      }

    }

    {
      WsSubjectLookup wsSubjectLookup = new WsSubjectLookup();
      if (!StringUtils.isBlank(subjectLookup.getHandle())) {
        wsSubjectLookup.setSubjectIdentifier(subjectLookup.getHandle());
      }
      if (!StringUtils.isBlank(subjectLookup.getId())) {
        wsSubjectLookup.setSubjectId(subjectLookup.getId());
      }
      if (!StringUtils.isBlank(subjectLookup.getIdOrHandle())) {
        //set both of these for id or identifier
        wsSubjectLookup.setSubjectId(subjectLookup.getIdOrHandle());
        wsSubjectLookup.setSubjectIdentifier(subjectLookup.getIdOrHandle());
      }

    }

    {

      if (membershipImmediacy == MembershipImmediacy.any) {
        gcHasMember.assignMemberFilter(WsMemberFilter.All);
      }
      if (membershipImmediacy == MembershipImmediacy.immediate) {
        gcHasMember.assignMemberFilter(WsMemberFilter.Immediate);
      }
      if (membershipImmediacy == MembershipImmediacy.nonimmediate) {
        gcHasMember.assignMemberFilter(WsMemberFilter.NonImmediate);
      }
    }

    WsHasMemberResults wsHasMemberResults = gcHasMember.execute();

    GroupHasMemberResponse groupHasMemberResponse = new GroupHasMemberResponse();
    ResponseMetadata responseMetadata = new ResponseMetadata();
    groupHasMemberResponse.setResponseMetadata(responseMetadata);


    if (StringUtils.equals(wsHasMemberResults.getResultMetadata().getSuccess(), "T")
        || StringUtils.equals(wsHasMemberResults.getResultMetadata().getResultCode(), "SUBJECT_NOT_FOUND")) {
      responseMetadata.setSuccess(true);

      if (StringUtils.equals(wsHasMemberResults.getResultMetadata().getResultCode(), "SUBJECT_NOT_FOUND")
          || StringUtils.equals(wsHasMemberResults.getResultMetadata().getResultCode(), "IS_NOT_MEMBER")) {
        groupHasMemberResponse.setHasMember(false);
      } else if (StringUtils.equals(wsHasMemberResults.getResultMetadata().getResultCode(), "IS_MEMBER")) {
        groupHasMemberResponse.setHasMember(true);
      } else {
        throw new RuntimeException("Note expecting Grouper result code: " + wsHasMemberResults.getResultMetadata().getResultCode());
      }
    }
    return groupHasMemberResponse;

  }

}