http://git-wip-us.apache.org/repos/asf/incubator-sentry/blob/2a03648b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesRequest.java
----------------------------------------------------------------------
diff --git 
a/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesRequest.java
 
b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesRequest.java
new file mode 100644
index 0000000..e643292
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b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesRequest.java
@@ -0,0 +1,717 @@
+/**
+ * Autogenerated by Thrift Compiler (0.9.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+package org.apache.sentry.service.api;
+
+import org.apache.commons.lang.builder.HashCodeBuilder;
+import org.apache.thrift.scheme.IScheme;
+import org.apache.thrift.scheme.SchemeFactory;
+import org.apache.thrift.scheme.StandardScheme;
+
+import org.apache.thrift.scheme.TupleScheme;
+import org.apache.thrift.protocol.TTupleProtocol;
+import org.apache.thrift.protocol.TProtocolException;
+import org.apache.thrift.EncodingUtils;
+import org.apache.thrift.TException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.EnumMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.EnumSet;
+import java.util.Collections;
+import java.util.BitSet;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TListSentryRolesRequest implements 
org.apache.thrift.TBase<TListSentryRolesRequest, 
TListSentryRolesRequest._Fields>, java.io.Serializable, Cloneable {
+  private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new 
org.apache.thrift.protocol.TStruct("TListSentryRolesRequest");
+
+  private static final org.apache.thrift.protocol.TField 
PROTOCOL_VERSION_FIELD_DESC = new 
org.apache.thrift.protocol.TField("protocol_version", 
org.apache.thrift.protocol.TType.I32, (short)1);
+  private static final org.apache.thrift.protocol.TField USER_NAME_FIELD_DESC 
= new org.apache.thrift.protocol.TField("userName", 
org.apache.thrift.protocol.TType.STRING, (short)2);
+  private static final org.apache.thrift.protocol.TField GROUP_NAME_FIELD_DESC 
= new org.apache.thrift.protocol.TField("groupName", 
org.apache.thrift.protocol.TType.STRING, (short)3);
+  private static final org.apache.thrift.protocol.TField ROLE_NAME_FIELD_DESC 
= new org.apache.thrift.protocol.TField("roleName", 
org.apache.thrift.protocol.TType.STRING, (short)4);
+
+  private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = 
new HashMap<Class<? extends IScheme>, SchemeFactory>();
+  static {
+    schemes.put(StandardScheme.class, new 
TListSentryRolesRequestStandardSchemeFactory());
+    schemes.put(TupleScheme.class, new 
TListSentryRolesRequestTupleSchemeFactory());
+  }
+
+  private TSentryServiceVersion protocol_version; // required
+  private String userName; // required
+  private String groupName; // optional
+  private String roleName; // optional
+
+  /** The set of fields this struct contains, along with convenience methods 
for finding and manipulating them. */
+  public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+    /**
+     * 
+     * @see TSentryServiceVersion
+     */
+    PROTOCOL_VERSION((short)1, "protocol_version"),
+    USER_NAME((short)2, "userName"),
+    GROUP_NAME((short)3, "groupName"),
+    ROLE_NAME((short)4, "roleName");
+
+    private static final Map<String, _Fields> byName = new HashMap<String, 
_Fields>();
+
+    static {
+      for (_Fields field : EnumSet.allOf(_Fields.class)) {
+        byName.put(field.getFieldName(), field);
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, or null if its not 
found.
+     */
+    public static _Fields findByThriftId(int fieldId) {
+      switch(fieldId) {
+        case 1: // PROTOCOL_VERSION
+          return PROTOCOL_VERSION;
+        case 2: // USER_NAME
+          return USER_NAME;
+        case 3: // GROUP_NAME
+          return GROUP_NAME;
+        case 4: // ROLE_NAME
+          return ROLE_NAME;
+        default:
+          return null;
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, throwing an exception
+     * if it is not found.
+     */
+    public static _Fields findByThriftIdOrThrow(int fieldId) {
+      _Fields fields = findByThriftId(fieldId);
+      if (fields == null) throw new IllegalArgumentException("Field " + 
fieldId + " doesn't exist!");
+      return fields;
+    }
+
+    /**
+     * Find the _Fields constant that matches name, or null if its not found.
+     */
+    public static _Fields findByName(String name) {
+      return byName.get(name);
+    }
+
+    private final short _thriftId;
+    private final String _fieldName;
+
+    _Fields(short thriftId, String fieldName) {
+      _thriftId = thriftId;
+      _fieldName = fieldName;
+    }
+
+    public short getThriftFieldId() {
+      return _thriftId;
+    }
+
+    public String getFieldName() {
+      return _fieldName;
+    }
+  }
+
+  // isset id assignments
+  private _Fields optionals[] = {_Fields.GROUP_NAME,_Fields.ROLE_NAME};
+  public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> 
metaDataMap;
+  static {
+    Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new 
EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+    tmpMap.put(_Fields.PROTOCOL_VERSION, new 
org.apache.thrift.meta_data.FieldMetaData("protocol_version", 
org.apache.thrift.TFieldRequirementType.REQUIRED, 
+        new 
org.apache.thrift.meta_data.EnumMetaData(org.apache.thrift.protocol.TType.ENUM, 
TSentryServiceVersion.class)));
+    tmpMap.put(_Fields.USER_NAME, new 
org.apache.thrift.meta_data.FieldMetaData("userName", 
org.apache.thrift.TFieldRequirementType.REQUIRED, 
+        new 
org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+    tmpMap.put(_Fields.GROUP_NAME, new 
org.apache.thrift.meta_data.FieldMetaData("groupName", 
org.apache.thrift.TFieldRequirementType.OPTIONAL, 
+        new 
org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+    tmpMap.put(_Fields.ROLE_NAME, new 
org.apache.thrift.meta_data.FieldMetaData("roleName", 
org.apache.thrift.TFieldRequirementType.OPTIONAL, 
+        new 
org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+    metaDataMap = Collections.unmodifiableMap(tmpMap);
+    
org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(TListSentryRolesRequest.class,
 metaDataMap);
+  }
+
+  public TListSentryRolesRequest() {
+    this.protocol_version = 
org.apache.sentry.service.api.TSentryServiceVersion.V1;
+
+  }
+
+  public TListSentryRolesRequest(
+    TSentryServiceVersion protocol_version,
+    String userName)
+  {
+    this();
+    this.protocol_version = protocol_version;
+    this.userName = userName;
+  }
+
+  /**
+   * Performs a deep copy on <i>other</i>.
+   */
+  public TListSentryRolesRequest(TListSentryRolesRequest other) {
+    if (other.isSetProtocol_version()) {
+      this.protocol_version = other.protocol_version;
+    }
+    if (other.isSetUserName()) {
+      this.userName = other.userName;
+    }
+    if (other.isSetGroupName()) {
+      this.groupName = other.groupName;
+    }
+    if (other.isSetRoleName()) {
+      this.roleName = other.roleName;
+    }
+  }
+
+  public TListSentryRolesRequest deepCopy() {
+    return new TListSentryRolesRequest(this);
+  }
+
+  @Override
+  public void clear() {
+    this.protocol_version = 
org.apache.sentry.service.api.TSentryServiceVersion.V1;
+
+    this.userName = null;
+    this.groupName = null;
+    this.roleName = null;
+  }
+
+  /**
+   * 
+   * @see TSentryServiceVersion
+   */
+  public TSentryServiceVersion getProtocol_version() {
+    return this.protocol_version;
+  }
+
+  /**
+   * 
+   * @see TSentryServiceVersion
+   */
+  public void setProtocol_version(TSentryServiceVersion protocol_version) {
+    this.protocol_version = protocol_version;
+  }
+
+  public void unsetProtocol_version() {
+    this.protocol_version = null;
+  }
+
+  /** Returns true if field protocol_version is set (has been assigned a 
value) and false otherwise */
+  public boolean isSetProtocol_version() {
+    return this.protocol_version != null;
+  }
+
+  public void setProtocol_versionIsSet(boolean value) {
+    if (!value) {
+      this.protocol_version = null;
+    }
+  }
+
+  public String getUserName() {
+    return this.userName;
+  }
+
+  public void setUserName(String userName) {
+    this.userName = userName;
+  }
+
+  public void unsetUserName() {
+    this.userName = null;
+  }
+
+  /** Returns true if field userName is set (has been assigned a value) and 
false otherwise */
+  public boolean isSetUserName() {
+    return this.userName != null;
+  }
+
+  public void setUserNameIsSet(boolean value) {
+    if (!value) {
+      this.userName = null;
+    }
+  }
+
+  public String getGroupName() {
+    return this.groupName;
+  }
+
+  public void setGroupName(String groupName) {
+    this.groupName = groupName;
+  }
+
+  public void unsetGroupName() {
+    this.groupName = null;
+  }
+
+  /** Returns true if field groupName is set (has been assigned a value) and 
false otherwise */
+  public boolean isSetGroupName() {
+    return this.groupName != null;
+  }
+
+  public void setGroupNameIsSet(boolean value) {
+    if (!value) {
+      this.groupName = null;
+    }
+  }
+
+  public String getRoleName() {
+    return this.roleName;
+  }
+
+  public void setRoleName(String roleName) {
+    this.roleName = roleName;
+  }
+
+  public void unsetRoleName() {
+    this.roleName = null;
+  }
+
+  /** Returns true if field roleName is set (has been assigned a value) and 
false otherwise */
+  public boolean isSetRoleName() {
+    return this.roleName != null;
+  }
+
+  public void setRoleNameIsSet(boolean value) {
+    if (!value) {
+      this.roleName = null;
+    }
+  }
+
+  public void setFieldValue(_Fields field, Object value) {
+    switch (field) {
+    case PROTOCOL_VERSION:
+      if (value == null) {
+        unsetProtocol_version();
+      } else {
+        setProtocol_version((TSentryServiceVersion)value);
+      }
+      break;
+
+    case USER_NAME:
+      if (value == null) {
+        unsetUserName();
+      } else {
+        setUserName((String)value);
+      }
+      break;
+
+    case GROUP_NAME:
+      if (value == null) {
+        unsetGroupName();
+      } else {
+        setGroupName((String)value);
+      }
+      break;
+
+    case ROLE_NAME:
+      if (value == null) {
+        unsetRoleName();
+      } else {
+        setRoleName((String)value);
+      }
+      break;
+
+    }
+  }
+
+  public Object getFieldValue(_Fields field) {
+    switch (field) {
+    case PROTOCOL_VERSION:
+      return getProtocol_version();
+
+    case USER_NAME:
+      return getUserName();
+
+    case GROUP_NAME:
+      return getGroupName();
+
+    case ROLE_NAME:
+      return getRoleName();
+
+    }
+    throw new IllegalStateException();
+  }
+
+  /** Returns true if field corresponding to fieldID is set (has been assigned 
a value) and false otherwise */
+  public boolean isSet(_Fields field) {
+    if (field == null) {
+      throw new IllegalArgumentException();
+    }
+
+    switch (field) {
+    case PROTOCOL_VERSION:
+      return isSetProtocol_version();
+    case USER_NAME:
+      return isSetUserName();
+    case GROUP_NAME:
+      return isSetGroupName();
+    case ROLE_NAME:
+      return isSetRoleName();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public boolean equals(Object that) {
+    if (that == null)
+      return false;
+    if (that instanceof TListSentryRolesRequest)
+      return this.equals((TListSentryRolesRequest)that);
+    return false;
+  }
+
+  public boolean equals(TListSentryRolesRequest that) {
+    if (that == null)
+      return false;
+
+    boolean this_present_protocol_version = true && 
this.isSetProtocol_version();
+    boolean that_present_protocol_version = true && 
that.isSetProtocol_version();
+    if (this_present_protocol_version || that_present_protocol_version) {
+      if (!(this_present_protocol_version && that_present_protocol_version))
+        return false;
+      if (!this.protocol_version.equals(that.protocol_version))
+        return false;
+    }
+
+    boolean this_present_userName = true && this.isSetUserName();
+    boolean that_present_userName = true && that.isSetUserName();
+    if (this_present_userName || that_present_userName) {
+      if (!(this_present_userName && that_present_userName))
+        return false;
+      if (!this.userName.equals(that.userName))
+        return false;
+    }
+
+    boolean this_present_groupName = true && this.isSetGroupName();
+    boolean that_present_groupName = true && that.isSetGroupName();
+    if (this_present_groupName || that_present_groupName) {
+      if (!(this_present_groupName && that_present_groupName))
+        return false;
+      if (!this.groupName.equals(that.groupName))
+        return false;
+    }
+
+    boolean this_present_roleName = true && this.isSetRoleName();
+    boolean that_present_roleName = true && that.isSetRoleName();
+    if (this_present_roleName || that_present_roleName) {
+      if (!(this_present_roleName && that_present_roleName))
+        return false;
+      if (!this.roleName.equals(that.roleName))
+        return false;
+    }
+
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    HashCodeBuilder builder = new HashCodeBuilder();
+
+    boolean present_protocol_version = true && (isSetProtocol_version());
+    builder.append(present_protocol_version);
+    if (present_protocol_version)
+      builder.append(protocol_version.getValue());
+
+    boolean present_userName = true && (isSetUserName());
+    builder.append(present_userName);
+    if (present_userName)
+      builder.append(userName);
+
+    boolean present_groupName = true && (isSetGroupName());
+    builder.append(present_groupName);
+    if (present_groupName)
+      builder.append(groupName);
+
+    boolean present_roleName = true && (isSetRoleName());
+    builder.append(present_roleName);
+    if (present_roleName)
+      builder.append(roleName);
+
+    return builder.toHashCode();
+  }
+
+  public int compareTo(TListSentryRolesRequest other) {
+    if (!getClass().equals(other.getClass())) {
+      return getClass().getName().compareTo(other.getClass().getName());
+    }
+
+    int lastComparison = 0;
+    TListSentryRolesRequest typedOther = (TListSentryRolesRequest)other;
+
+    lastComparison = 
Boolean.valueOf(isSetProtocol_version()).compareTo(typedOther.isSetProtocol_version());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetProtocol_version()) {
+      lastComparison = 
org.apache.thrift.TBaseHelper.compareTo(this.protocol_version, 
typedOther.protocol_version);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    lastComparison = 
Boolean.valueOf(isSetUserName()).compareTo(typedOther.isSetUserName());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetUserName()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.userName, 
typedOther.userName);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    lastComparison = 
Boolean.valueOf(isSetGroupName()).compareTo(typedOther.isSetGroupName());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetGroupName()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.groupName, 
typedOther.groupName);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    lastComparison = 
Boolean.valueOf(isSetRoleName()).compareTo(typedOther.isSetRoleName());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetRoleName()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.roleName, 
typedOther.roleName);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    return 0;
+  }
+
+  public _Fields fieldForId(int fieldId) {
+    return _Fields.findByThriftId(fieldId);
+  }
+
+  public void read(org.apache.thrift.protocol.TProtocol iprot) throws 
org.apache.thrift.TException {
+    schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+  }
+
+  public void write(org.apache.thrift.protocol.TProtocol oprot) throws 
org.apache.thrift.TException {
+    schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder("TListSentryRolesRequest(");
+    boolean first = true;
+
+    sb.append("protocol_version:");
+    if (this.protocol_version == null) {
+      sb.append("null");
+    } else {
+      sb.append(this.protocol_version);
+    }
+    first = false;
+    if (!first) sb.append(", ");
+    sb.append("userName:");
+    if (this.userName == null) {
+      sb.append("null");
+    } else {
+      sb.append(this.userName);
+    }
+    first = false;
+    if (isSetGroupName()) {
+      if (!first) sb.append(", ");
+      sb.append("groupName:");
+      if (this.groupName == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.groupName);
+      }
+      first = false;
+    }
+    if (isSetRoleName()) {
+      if (!first) sb.append(", ");
+      sb.append("roleName:");
+      if (this.roleName == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.roleName);
+      }
+      first = false;
+    }
+    sb.append(")");
+    return sb.toString();
+  }
+
+  public void validate() throws org.apache.thrift.TException {
+    // check for required fields
+    if (!isSetProtocol_version()) {
+      throw new org.apache.thrift.protocol.TProtocolException("Required field 
'protocol_version' is unset! Struct:" + toString());
+    }
+
+    if (!isSetUserName()) {
+      throw new org.apache.thrift.protocol.TProtocolException("Required field 
'userName' is unset! Struct:" + toString());
+    }
+
+    // check for sub-struct validity
+  }
+
+  private void writeObject(java.io.ObjectOutputStream out) throws 
java.io.IOException {
+    try {
+      write(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(out)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private void readObject(java.io.ObjectInputStream in) throws 
java.io.IOException, ClassNotFoundException {
+    try {
+      read(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(in)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private static class TListSentryRolesRequestStandardSchemeFactory implements 
SchemeFactory {
+    public TListSentryRolesRequestStandardScheme getScheme() {
+      return new TListSentryRolesRequestStandardScheme();
+    }
+  }
+
+  private static class TListSentryRolesRequestStandardScheme extends 
StandardScheme<TListSentryRolesRequest> {
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot, 
TListSentryRolesRequest struct) throws org.apache.thrift.TException {
+      org.apache.thrift.protocol.TField schemeField;
+      iprot.readStructBegin();
+      while (true)
+      {
+        schemeField = iprot.readFieldBegin();
+        if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+          break;
+        }
+        switch (schemeField.id) {
+          case 1: // PROTOCOL_VERSION
+            if (schemeField.type == org.apache.thrift.protocol.TType.I32) {
+              struct.protocol_version = 
TSentryServiceVersion.findByValue(iprot.readI32());
+              struct.setProtocol_versionIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          case 2: // USER_NAME
+            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+              struct.userName = iprot.readString();
+              struct.setUserNameIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          case 3: // GROUP_NAME
+            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+              struct.groupName = iprot.readString();
+              struct.setGroupNameIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          case 4: // ROLE_NAME
+            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+              struct.roleName = iprot.readString();
+              struct.setRoleNameIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          default:
+            org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+        }
+        iprot.readFieldEnd();
+      }
+      iprot.readStructEnd();
+      struct.validate();
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot, 
TListSentryRolesRequest struct) throws org.apache.thrift.TException {
+      struct.validate();
+
+      oprot.writeStructBegin(STRUCT_DESC);
+      if (struct.protocol_version != null) {
+        oprot.writeFieldBegin(PROTOCOL_VERSION_FIELD_DESC);
+        oprot.writeI32(struct.protocol_version.getValue());
+        oprot.writeFieldEnd();
+      }
+      if (struct.userName != null) {
+        oprot.writeFieldBegin(USER_NAME_FIELD_DESC);
+        oprot.writeString(struct.userName);
+        oprot.writeFieldEnd();
+      }
+      if (struct.groupName != null) {
+        if (struct.isSetGroupName()) {
+          oprot.writeFieldBegin(GROUP_NAME_FIELD_DESC);
+          oprot.writeString(struct.groupName);
+          oprot.writeFieldEnd();
+        }
+      }
+      if (struct.roleName != null) {
+        if (struct.isSetRoleName()) {
+          oprot.writeFieldBegin(ROLE_NAME_FIELD_DESC);
+          oprot.writeString(struct.roleName);
+          oprot.writeFieldEnd();
+        }
+      }
+      oprot.writeFieldStop();
+      oprot.writeStructEnd();
+    }
+
+  }
+
+  private static class TListSentryRolesRequestTupleSchemeFactory implements 
SchemeFactory {
+    public TListSentryRolesRequestTupleScheme getScheme() {
+      return new TListSentryRolesRequestTupleScheme();
+    }
+  }
+
+  private static class TListSentryRolesRequestTupleScheme extends 
TupleScheme<TListSentryRolesRequest> {
+
+    @Override
+    public void write(org.apache.thrift.protocol.TProtocol prot, 
TListSentryRolesRequest struct) throws org.apache.thrift.TException {
+      TTupleProtocol oprot = (TTupleProtocol) prot;
+      oprot.writeI32(struct.protocol_version.getValue());
+      oprot.writeString(struct.userName);
+      BitSet optionals = new BitSet();
+      if (struct.isSetGroupName()) {
+        optionals.set(0);
+      }
+      if (struct.isSetRoleName()) {
+        optionals.set(1);
+      }
+      oprot.writeBitSet(optionals, 2);
+      if (struct.isSetGroupName()) {
+        oprot.writeString(struct.groupName);
+      }
+      if (struct.isSetRoleName()) {
+        oprot.writeString(struct.roleName);
+      }
+    }
+
+    @Override
+    public void read(org.apache.thrift.protocol.TProtocol prot, 
TListSentryRolesRequest struct) throws org.apache.thrift.TException {
+      TTupleProtocol iprot = (TTupleProtocol) prot;
+      struct.protocol_version = 
TSentryServiceVersion.findByValue(iprot.readI32());
+      struct.setProtocol_versionIsSet(true);
+      struct.userName = iprot.readString();
+      struct.setUserNameIsSet(true);
+      BitSet incoming = iprot.readBitSet(2);
+      if (incoming.get(0)) {
+        struct.groupName = iprot.readString();
+        struct.setGroupNameIsSet(true);
+      }
+      if (incoming.get(1)) {
+        struct.roleName = iprot.readString();
+        struct.setRoleNameIsSet(true);
+      }
+    }
+  }
+
+}
+

http://git-wip-us.apache.org/repos/asf/incubator-sentry/blob/2a03648b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesResponse.java
----------------------------------------------------------------------
diff --git 
a/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesResponse.java
 
b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesResponse.java
new file mode 100644
index 0000000..26fbd72
--- /dev/null
+++ 
b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TListSentryRolesResponse.java
@@ -0,0 +1,545 @@
+/**
+ * Autogenerated by Thrift Compiler (0.9.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+package org.apache.sentry.service.api;
+
+import org.apache.commons.lang.builder.HashCodeBuilder;
+import org.apache.thrift.scheme.IScheme;
+import org.apache.thrift.scheme.SchemeFactory;
+import org.apache.thrift.scheme.StandardScheme;
+
+import org.apache.thrift.scheme.TupleScheme;
+import org.apache.thrift.protocol.TTupleProtocol;
+import org.apache.thrift.protocol.TProtocolException;
+import org.apache.thrift.EncodingUtils;
+import org.apache.thrift.TException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.EnumMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.EnumSet;
+import java.util.Collections;
+import java.util.BitSet;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TListSentryRolesResponse implements 
org.apache.thrift.TBase<TListSentryRolesResponse, 
TListSentryRolesResponse._Fields>, java.io.Serializable, Cloneable {
+  private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new 
org.apache.thrift.protocol.TStruct("TListSentryRolesResponse");
+
+  private static final org.apache.thrift.protocol.TField STATUS_FIELD_DESC = 
new org.apache.thrift.protocol.TField("status", 
org.apache.thrift.protocol.TType.STRUCT, (short)1);
+  private static final org.apache.thrift.protocol.TField ROLES_FIELD_DESC = 
new org.apache.thrift.protocol.TField("roles", 
org.apache.thrift.protocol.TType.SET, (short)2);
+
+  private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = 
new HashMap<Class<? extends IScheme>, SchemeFactory>();
+  static {
+    schemes.put(StandardScheme.class, new 
TListSentryRolesResponseStandardSchemeFactory());
+    schemes.put(TupleScheme.class, new 
TListSentryRolesResponseTupleSchemeFactory());
+  }
+
+  private TSentryResponseStatus status; // required
+  private Set<TSentryRole> roles; // required
+
+  /** The set of fields this struct contains, along with convenience methods 
for finding and manipulating them. */
+  public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+    STATUS((short)1, "status"),
+    ROLES((short)2, "roles");
+
+    private static final Map<String, _Fields> byName = new HashMap<String, 
_Fields>();
+
+    static {
+      for (_Fields field : EnumSet.allOf(_Fields.class)) {
+        byName.put(field.getFieldName(), field);
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, or null if its not 
found.
+     */
+    public static _Fields findByThriftId(int fieldId) {
+      switch(fieldId) {
+        case 1: // STATUS
+          return STATUS;
+        case 2: // ROLES
+          return ROLES;
+        default:
+          return null;
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, throwing an exception
+     * if it is not found.
+     */
+    public static _Fields findByThriftIdOrThrow(int fieldId) {
+      _Fields fields = findByThriftId(fieldId);
+      if (fields == null) throw new IllegalArgumentException("Field " + 
fieldId + " doesn't exist!");
+      return fields;
+    }
+
+    /**
+     * Find the _Fields constant that matches name, or null if its not found.
+     */
+    public static _Fields findByName(String name) {
+      return byName.get(name);
+    }
+
+    private final short _thriftId;
+    private final String _fieldName;
+
+    _Fields(short thriftId, String fieldName) {
+      _thriftId = thriftId;
+      _fieldName = fieldName;
+    }
+
+    public short getThriftFieldId() {
+      return _thriftId;
+    }
+
+    public String getFieldName() {
+      return _fieldName;
+    }
+  }
+
+  // isset id assignments
+  public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> 
metaDataMap;
+  static {
+    Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new 
EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+    tmpMap.put(_Fields.STATUS, new 
org.apache.thrift.meta_data.FieldMetaData("status", 
org.apache.thrift.TFieldRequirementType.REQUIRED, 
+        new 
org.apache.thrift.meta_data.StructMetaData(org.apache.thrift.protocol.TType.STRUCT,
 TSentryResponseStatus.class)));
+    tmpMap.put(_Fields.ROLES, new 
org.apache.thrift.meta_data.FieldMetaData("roles", 
org.apache.thrift.TFieldRequirementType.REQUIRED, 
+        new 
org.apache.thrift.meta_data.SetMetaData(org.apache.thrift.protocol.TType.SET, 
+            new 
org.apache.thrift.meta_data.StructMetaData(org.apache.thrift.protocol.TType.STRUCT,
 TSentryRole.class))));
+    metaDataMap = Collections.unmodifiableMap(tmpMap);
+    
org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(TListSentryRolesResponse.class,
 metaDataMap);
+  }
+
+  public TListSentryRolesResponse() {
+  }
+
+  public TListSentryRolesResponse(
+    TSentryResponseStatus status,
+    Set<TSentryRole> roles)
+  {
+    this();
+    this.status = status;
+    this.roles = roles;
+  }
+
+  /**
+   * Performs a deep copy on <i>other</i>.
+   */
+  public TListSentryRolesResponse(TListSentryRolesResponse other) {
+    if (other.isSetStatus()) {
+      this.status = new TSentryResponseStatus(other.status);
+    }
+    if (other.isSetRoles()) {
+      Set<TSentryRole> __this__roles = new HashSet<TSentryRole>();
+      for (TSentryRole other_element : other.roles) {
+        __this__roles.add(new TSentryRole(other_element));
+      }
+      this.roles = __this__roles;
+    }
+  }
+
+  public TListSentryRolesResponse deepCopy() {
+    return new TListSentryRolesResponse(this);
+  }
+
+  @Override
+  public void clear() {
+    this.status = null;
+    this.roles = null;
+  }
+
+  public TSentryResponseStatus getStatus() {
+    return this.status;
+  }
+
+  public void setStatus(TSentryResponseStatus status) {
+    this.status = status;
+  }
+
+  public void unsetStatus() {
+    this.status = null;
+  }
+
+  /** Returns true if field status is set (has been assigned a value) and 
false otherwise */
+  public boolean isSetStatus() {
+    return this.status != null;
+  }
+
+  public void setStatusIsSet(boolean value) {
+    if (!value) {
+      this.status = null;
+    }
+  }
+
+  public int getRolesSize() {
+    return (this.roles == null) ? 0 : this.roles.size();
+  }
+
+  public java.util.Iterator<TSentryRole> getRolesIterator() {
+    return (this.roles == null) ? null : this.roles.iterator();
+  }
+
+  public void addToRoles(TSentryRole elem) {
+    if (this.roles == null) {
+      this.roles = new HashSet<TSentryRole>();
+    }
+    this.roles.add(elem);
+  }
+
+  public Set<TSentryRole> getRoles() {
+    return this.roles;
+  }
+
+  public void setRoles(Set<TSentryRole> roles) {
+    this.roles = roles;
+  }
+
+  public void unsetRoles() {
+    this.roles = null;
+  }
+
+  /** Returns true if field roles is set (has been assigned a value) and false 
otherwise */
+  public boolean isSetRoles() {
+    return this.roles != null;
+  }
+
+  public void setRolesIsSet(boolean value) {
+    if (!value) {
+      this.roles = null;
+    }
+  }
+
+  public void setFieldValue(_Fields field, Object value) {
+    switch (field) {
+    case STATUS:
+      if (value == null) {
+        unsetStatus();
+      } else {
+        setStatus((TSentryResponseStatus)value);
+      }
+      break;
+
+    case ROLES:
+      if (value == null) {
+        unsetRoles();
+      } else {
+        setRoles((Set<TSentryRole>)value);
+      }
+      break;
+
+    }
+  }
+
+  public Object getFieldValue(_Fields field) {
+    switch (field) {
+    case STATUS:
+      return getStatus();
+
+    case ROLES:
+      return getRoles();
+
+    }
+    throw new IllegalStateException();
+  }
+
+  /** Returns true if field corresponding to fieldID is set (has been assigned 
a value) and false otherwise */
+  public boolean isSet(_Fields field) {
+    if (field == null) {
+      throw new IllegalArgumentException();
+    }
+
+    switch (field) {
+    case STATUS:
+      return isSetStatus();
+    case ROLES:
+      return isSetRoles();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public boolean equals(Object that) {
+    if (that == null)
+      return false;
+    if (that instanceof TListSentryRolesResponse)
+      return this.equals((TListSentryRolesResponse)that);
+    return false;
+  }
+
+  public boolean equals(TListSentryRolesResponse that) {
+    if (that == null)
+      return false;
+
+    boolean this_present_status = true && this.isSetStatus();
+    boolean that_present_status = true && that.isSetStatus();
+    if (this_present_status || that_present_status) {
+      if (!(this_present_status && that_present_status))
+        return false;
+      if (!this.status.equals(that.status))
+        return false;
+    }
+
+    boolean this_present_roles = true && this.isSetRoles();
+    boolean that_present_roles = true && that.isSetRoles();
+    if (this_present_roles || that_present_roles) {
+      if (!(this_present_roles && that_present_roles))
+        return false;
+      if (!this.roles.equals(that.roles))
+        return false;
+    }
+
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    HashCodeBuilder builder = new HashCodeBuilder();
+
+    boolean present_status = true && (isSetStatus());
+    builder.append(present_status);
+    if (present_status)
+      builder.append(status);
+
+    boolean present_roles = true && (isSetRoles());
+    builder.append(present_roles);
+    if (present_roles)
+      builder.append(roles);
+
+    return builder.toHashCode();
+  }
+
+  public int compareTo(TListSentryRolesResponse other) {
+    if (!getClass().equals(other.getClass())) {
+      return getClass().getName().compareTo(other.getClass().getName());
+    }
+
+    int lastComparison = 0;
+    TListSentryRolesResponse typedOther = (TListSentryRolesResponse)other;
+
+    lastComparison = 
Boolean.valueOf(isSetStatus()).compareTo(typedOther.isSetStatus());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetStatus()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.status, 
typedOther.status);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    lastComparison = 
Boolean.valueOf(isSetRoles()).compareTo(typedOther.isSetRoles());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetRoles()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.roles, 
typedOther.roles);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    return 0;
+  }
+
+  public _Fields fieldForId(int fieldId) {
+    return _Fields.findByThriftId(fieldId);
+  }
+
+  public void read(org.apache.thrift.protocol.TProtocol iprot) throws 
org.apache.thrift.TException {
+    schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+  }
+
+  public void write(org.apache.thrift.protocol.TProtocol oprot) throws 
org.apache.thrift.TException {
+    schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder("TListSentryRolesResponse(");
+    boolean first = true;
+
+    sb.append("status:");
+    if (this.status == null) {
+      sb.append("null");
+    } else {
+      sb.append(this.status);
+    }
+    first = false;
+    if (!first) sb.append(", ");
+    sb.append("roles:");
+    if (this.roles == null) {
+      sb.append("null");
+    } else {
+      sb.append(this.roles);
+    }
+    first = false;
+    sb.append(")");
+    return sb.toString();
+  }
+
+  public void validate() throws org.apache.thrift.TException {
+    // check for required fields
+    if (!isSetStatus()) {
+      throw new org.apache.thrift.protocol.TProtocolException("Required field 
'status' is unset! Struct:" + toString());
+    }
+
+    if (!isSetRoles()) {
+      throw new org.apache.thrift.protocol.TProtocolException("Required field 
'roles' is unset! Struct:" + toString());
+    }
+
+    // check for sub-struct validity
+    if (status != null) {
+      status.validate();
+    }
+  }
+
+  private void writeObject(java.io.ObjectOutputStream out) throws 
java.io.IOException {
+    try {
+      write(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(out)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private void readObject(java.io.ObjectInputStream in) throws 
java.io.IOException, ClassNotFoundException {
+    try {
+      read(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(in)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private static class TListSentryRolesResponseStandardSchemeFactory 
implements SchemeFactory {
+    public TListSentryRolesResponseStandardScheme getScheme() {
+      return new TListSentryRolesResponseStandardScheme();
+    }
+  }
+
+  private static class TListSentryRolesResponseStandardScheme extends 
StandardScheme<TListSentryRolesResponse> {
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot, 
TListSentryRolesResponse struct) throws org.apache.thrift.TException {
+      org.apache.thrift.protocol.TField schemeField;
+      iprot.readStructBegin();
+      while (true)
+      {
+        schemeField = iprot.readFieldBegin();
+        if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+          break;
+        }
+        switch (schemeField.id) {
+          case 1: // STATUS
+            if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+              struct.status = new TSentryResponseStatus();
+              struct.status.read(iprot);
+              struct.setStatusIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          case 2: // ROLES
+            if (schemeField.type == org.apache.thrift.protocol.TType.SET) {
+              {
+                org.apache.thrift.protocol.TSet _set16 = iprot.readSetBegin();
+                struct.roles = new HashSet<TSentryRole>(2*_set16.size);
+                for (int _i17 = 0; _i17 < _set16.size; ++_i17)
+                {
+                  TSentryRole _elem18; // required
+                  _elem18 = new TSentryRole();
+                  _elem18.read(iprot);
+                  struct.roles.add(_elem18);
+                }
+                iprot.readSetEnd();
+              }
+              struct.setRolesIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          default:
+            org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+        }
+        iprot.readFieldEnd();
+      }
+      iprot.readStructEnd();
+      struct.validate();
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot, 
TListSentryRolesResponse struct) throws org.apache.thrift.TException {
+      struct.validate();
+
+      oprot.writeStructBegin(STRUCT_DESC);
+      if (struct.status != null) {
+        oprot.writeFieldBegin(STATUS_FIELD_DESC);
+        struct.status.write(oprot);
+        oprot.writeFieldEnd();
+      }
+      if (struct.roles != null) {
+        oprot.writeFieldBegin(ROLES_FIELD_DESC);
+        {
+          oprot.writeSetBegin(new 
org.apache.thrift.protocol.TSet(org.apache.thrift.protocol.TType.STRUCT, 
struct.roles.size()));
+          for (TSentryRole _iter19 : struct.roles)
+          {
+            _iter19.write(oprot);
+          }
+          oprot.writeSetEnd();
+        }
+        oprot.writeFieldEnd();
+      }
+      oprot.writeFieldStop();
+      oprot.writeStructEnd();
+    }
+
+  }
+
+  private static class TListSentryRolesResponseTupleSchemeFactory implements 
SchemeFactory {
+    public TListSentryRolesResponseTupleScheme getScheme() {
+      return new TListSentryRolesResponseTupleScheme();
+    }
+  }
+
+  private static class TListSentryRolesResponseTupleScheme extends 
TupleScheme<TListSentryRolesResponse> {
+
+    @Override
+    public void write(org.apache.thrift.protocol.TProtocol prot, 
TListSentryRolesResponse struct) throws org.apache.thrift.TException {
+      TTupleProtocol oprot = (TTupleProtocol) prot;
+      struct.status.write(oprot);
+      {
+        oprot.writeI32(struct.roles.size());
+        for (TSentryRole _iter20 : struct.roles)
+        {
+          _iter20.write(oprot);
+        }
+      }
+    }
+
+    @Override
+    public void read(org.apache.thrift.protocol.TProtocol prot, 
TListSentryRolesResponse struct) throws org.apache.thrift.TException {
+      TTupleProtocol iprot = (TTupleProtocol) prot;
+      struct.status = new TSentryResponseStatus();
+      struct.status.read(iprot);
+      struct.setStatusIsSet(true);
+      {
+        org.apache.thrift.protocol.TSet _set21 = new 
org.apache.thrift.protocol.TSet(org.apache.thrift.protocol.TType.STRUCT, 
iprot.readI32());
+        struct.roles = new HashSet<TSentryRole>(2*_set21.size);
+        for (int _i22 = 0; _i22 < _set21.size; ++_i22)
+        {
+          TSentryRole _elem23; // required
+          _elem23 = new TSentryRole();
+          _elem23.read(iprot);
+          struct.roles.add(_elem23);
+        }
+      }
+      struct.setRolesIsSet(true);
+    }
+  }
+
+}
+

http://git-wip-us.apache.org/repos/asf/incubator-sentry/blob/2a03648b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TSentryGroup.java
----------------------------------------------------------------------
diff --git 
a/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TSentryGroup.java
 
b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TSentryGroup.java
new file mode 100644
index 0000000..79cb1c7
--- /dev/null
+++ 
b/sentry-provider/sentry-provider-db/src/gen/thrift/gen-javabean/org/apache/sentry/service/api/TSentryGroup.java
@@ -0,0 +1,385 @@
+/**
+ * Autogenerated by Thrift Compiler (0.9.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+package org.apache.sentry.service.api;
+
+import org.apache.commons.lang.builder.HashCodeBuilder;
+import org.apache.thrift.scheme.IScheme;
+import org.apache.thrift.scheme.SchemeFactory;
+import org.apache.thrift.scheme.StandardScheme;
+
+import org.apache.thrift.scheme.TupleScheme;
+import org.apache.thrift.protocol.TTupleProtocol;
+import org.apache.thrift.protocol.TProtocolException;
+import org.apache.thrift.EncodingUtils;
+import org.apache.thrift.TException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.EnumMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.EnumSet;
+import java.util.Collections;
+import java.util.BitSet;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TSentryGroup implements org.apache.thrift.TBase<TSentryGroup, 
TSentryGroup._Fields>, java.io.Serializable, Cloneable {
+  private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new 
org.apache.thrift.protocol.TStruct("TSentryGroup");
+
+  private static final org.apache.thrift.protocol.TField GROUP_NAME_FIELD_DESC 
= new org.apache.thrift.protocol.TField("groupName", 
org.apache.thrift.protocol.TType.STRING, (short)1);
+
+  private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = 
new HashMap<Class<? extends IScheme>, SchemeFactory>();
+  static {
+    schemes.put(StandardScheme.class, new TSentryGroupStandardSchemeFactory());
+    schemes.put(TupleScheme.class, new TSentryGroupTupleSchemeFactory());
+  }
+
+  private String groupName; // required
+
+  /** The set of fields this struct contains, along with convenience methods 
for finding and manipulating them. */
+  public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+    GROUP_NAME((short)1, "groupName");
+
+    private static final Map<String, _Fields> byName = new HashMap<String, 
_Fields>();
+
+    static {
+      for (_Fields field : EnumSet.allOf(_Fields.class)) {
+        byName.put(field.getFieldName(), field);
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, or null if its not 
found.
+     */
+    public static _Fields findByThriftId(int fieldId) {
+      switch(fieldId) {
+        case 1: // GROUP_NAME
+          return GROUP_NAME;
+        default:
+          return null;
+      }
+    }
+
+    /**
+     * Find the _Fields constant that matches fieldId, throwing an exception
+     * if it is not found.
+     */
+    public static _Fields findByThriftIdOrThrow(int fieldId) {
+      _Fields fields = findByThriftId(fieldId);
+      if (fields == null) throw new IllegalArgumentException("Field " + 
fieldId + " doesn't exist!");
+      return fields;
+    }
+
+    /**
+     * Find the _Fields constant that matches name, or null if its not found.
+     */
+    public static _Fields findByName(String name) {
+      return byName.get(name);
+    }
+
+    private final short _thriftId;
+    private final String _fieldName;
+
+    _Fields(short thriftId, String fieldName) {
+      _thriftId = thriftId;
+      _fieldName = fieldName;
+    }
+
+    public short getThriftFieldId() {
+      return _thriftId;
+    }
+
+    public String getFieldName() {
+      return _fieldName;
+    }
+  }
+
+  // isset id assignments
+  public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> 
metaDataMap;
+  static {
+    Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new 
EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+    tmpMap.put(_Fields.GROUP_NAME, new 
org.apache.thrift.meta_data.FieldMetaData("groupName", 
org.apache.thrift.TFieldRequirementType.REQUIRED, 
+        new 
org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
+    metaDataMap = Collections.unmodifiableMap(tmpMap);
+    
org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(TSentryGroup.class,
 metaDataMap);
+  }
+
+  public TSentryGroup() {
+  }
+
+  public TSentryGroup(
+    String groupName)
+  {
+    this();
+    this.groupName = groupName;
+  }
+
+  /**
+   * Performs a deep copy on <i>other</i>.
+   */
+  public TSentryGroup(TSentryGroup other) {
+    if (other.isSetGroupName()) {
+      this.groupName = other.groupName;
+    }
+  }
+
+  public TSentryGroup deepCopy() {
+    return new TSentryGroup(this);
+  }
+
+  @Override
+  public void clear() {
+    this.groupName = null;
+  }
+
+  public String getGroupName() {
+    return this.groupName;
+  }
+
+  public void setGroupName(String groupName) {
+    this.groupName = groupName;
+  }
+
+  public void unsetGroupName() {
+    this.groupName = null;
+  }
+
+  /** Returns true if field groupName is set (has been assigned a value) and 
false otherwise */
+  public boolean isSetGroupName() {
+    return this.groupName != null;
+  }
+
+  public void setGroupNameIsSet(boolean value) {
+    if (!value) {
+      this.groupName = null;
+    }
+  }
+
+  public void setFieldValue(_Fields field, Object value) {
+    switch (field) {
+    case GROUP_NAME:
+      if (value == null) {
+        unsetGroupName();
+      } else {
+        setGroupName((String)value);
+      }
+      break;
+
+    }
+  }
+
+  public Object getFieldValue(_Fields field) {
+    switch (field) {
+    case GROUP_NAME:
+      return getGroupName();
+
+    }
+    throw new IllegalStateException();
+  }
+
+  /** Returns true if field corresponding to fieldID is set (has been assigned 
a value) and false otherwise */
+  public boolean isSet(_Fields field) {
+    if (field == null) {
+      throw new IllegalArgumentException();
+    }
+
+    switch (field) {
+    case GROUP_NAME:
+      return isSetGroupName();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public boolean equals(Object that) {
+    if (that == null)
+      return false;
+    if (that instanceof TSentryGroup)
+      return this.equals((TSentryGroup)that);
+    return false;
+  }
+
+  public boolean equals(TSentryGroup that) {
+    if (that == null)
+      return false;
+
+    boolean this_present_groupName = true && this.isSetGroupName();
+    boolean that_present_groupName = true && that.isSetGroupName();
+    if (this_present_groupName || that_present_groupName) {
+      if (!(this_present_groupName && that_present_groupName))
+        return false;
+      if (!this.groupName.equals(that.groupName))
+        return false;
+    }
+
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    HashCodeBuilder builder = new HashCodeBuilder();
+
+    boolean present_groupName = true && (isSetGroupName());
+    builder.append(present_groupName);
+    if (present_groupName)
+      builder.append(groupName);
+
+    return builder.toHashCode();
+  }
+
+  public int compareTo(TSentryGroup other) {
+    if (!getClass().equals(other.getClass())) {
+      return getClass().getName().compareTo(other.getClass().getName());
+    }
+
+    int lastComparison = 0;
+    TSentryGroup typedOther = (TSentryGroup)other;
+
+    lastComparison = 
Boolean.valueOf(isSetGroupName()).compareTo(typedOther.isSetGroupName());
+    if (lastComparison != 0) {
+      return lastComparison;
+    }
+    if (isSetGroupName()) {
+      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.groupName, 
typedOther.groupName);
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+    }
+    return 0;
+  }
+
+  public _Fields fieldForId(int fieldId) {
+    return _Fields.findByThriftId(fieldId);
+  }
+
+  public void read(org.apache.thrift.protocol.TProtocol iprot) throws 
org.apache.thrift.TException {
+    schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+  }
+
+  public void write(org.apache.thrift.protocol.TProtocol oprot) throws 
org.apache.thrift.TException {
+    schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder("TSentryGroup(");
+    boolean first = true;
+
+    sb.append("groupName:");
+    if (this.groupName == null) {
+      sb.append("null");
+    } else {
+      sb.append(this.groupName);
+    }
+    first = false;
+    sb.append(")");
+    return sb.toString();
+  }
+
+  public void validate() throws org.apache.thrift.TException {
+    // check for required fields
+    if (!isSetGroupName()) {
+      throw new org.apache.thrift.protocol.TProtocolException("Required field 
'groupName' is unset! Struct:" + toString());
+    }
+
+    // check for sub-struct validity
+  }
+
+  private void writeObject(java.io.ObjectOutputStream out) throws 
java.io.IOException {
+    try {
+      write(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(out)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private void readObject(java.io.ObjectInputStream in) throws 
java.io.IOException, ClassNotFoundException {
+    try {
+      read(new org.apache.thrift.protocol.TCompactProtocol(new 
org.apache.thrift.transport.TIOStreamTransport(in)));
+    } catch (org.apache.thrift.TException te) {
+      throw new java.io.IOException(te);
+    }
+  }
+
+  private static class TSentryGroupStandardSchemeFactory implements 
SchemeFactory {
+    public TSentryGroupStandardScheme getScheme() {
+      return new TSentryGroupStandardScheme();
+    }
+  }
+
+  private static class TSentryGroupStandardScheme extends 
StandardScheme<TSentryGroup> {
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot, TSentryGroup 
struct) throws org.apache.thrift.TException {
+      org.apache.thrift.protocol.TField schemeField;
+      iprot.readStructBegin();
+      while (true)
+      {
+        schemeField = iprot.readFieldBegin();
+        if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+          break;
+        }
+        switch (schemeField.id) {
+          case 1: // GROUP_NAME
+            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
+              struct.groupName = iprot.readString();
+              struct.setGroupNameIsSet(true);
+            } else { 
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+            }
+            break;
+          default:
+            org.apache.thrift.protocol.TProtocolUtil.skip(iprot, 
schemeField.type);
+        }
+        iprot.readFieldEnd();
+      }
+      iprot.readStructEnd();
+      struct.validate();
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot, TSentryGroup 
struct) throws org.apache.thrift.TException {
+      struct.validate();
+
+      oprot.writeStructBegin(STRUCT_DESC);
+      if (struct.groupName != null) {
+        oprot.writeFieldBegin(GROUP_NAME_FIELD_DESC);
+        oprot.writeString(struct.groupName);
+        oprot.writeFieldEnd();
+      }
+      oprot.writeFieldStop();
+      oprot.writeStructEnd();
+    }
+
+  }
+
+  private static class TSentryGroupTupleSchemeFactory implements SchemeFactory 
{
+    public TSentryGroupTupleScheme getScheme() {
+      return new TSentryGroupTupleScheme();
+    }
+  }
+
+  private static class TSentryGroupTupleScheme extends 
TupleScheme<TSentryGroup> {
+
+    @Override
+    public void write(org.apache.thrift.protocol.TProtocol prot, TSentryGroup 
struct) throws org.apache.thrift.TException {
+      TTupleProtocol oprot = (TTupleProtocol) prot;
+      oprot.writeString(struct.groupName);
+    }
+
+    @Override
+    public void read(org.apache.thrift.protocol.TProtocol prot, TSentryGroup 
struct) throws org.apache.thrift.TException {
+      TTupleProtocol iprot = (TTupleProtocol) prot;
+      struct.groupName = iprot.readString();
+      struct.setGroupNameIsSet(true);
+    }
+  }
+
+}
+

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