diff --git a/build/golang/grpc.pb.go b/build/golang/grpc.pb.go
new file mode 100644
index 0000000..1391622
--- /dev/null
+++ b/build/golang/grpc.pb.go
@@ -0,0 +1,180 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: grpc.proto
+
+/*
+Package grpc is a generated protocol buffer package.
+
+It is generated from these files:
+	grpc.proto
+
+It has these top-level messages:
+	DBInput
+	DBOutput
+*/
+package grpc
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc1 "google.golang.org/grpc"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type DBInput struct {
+	TargetDao string            `protobuf:"bytes,1,opt,name=targetDao" json:"targetDao,omitempty"`
+	Method    string            `protobuf:"bytes,2,opt,name=method" json:"method,omitempty"`
+	Param     map[string]string `protobuf:"bytes,3,rep,name=param" json:"param,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+}
+
+func (m *DBInput) Reset()                    { *m = DBInput{} }
+func (m *DBInput) String() string            { return proto.CompactTextString(m) }
+func (*DBInput) ProtoMessage()               {}
+func (*DBInput) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *DBInput) GetTargetDao() string {
+	if m != nil {
+		return m.TargetDao
+	}
+	return ""
+}
+
+func (m *DBInput) GetMethod() string {
+	if m != nil {
+		return m.Method
+	}
+	return ""
+}
+
+func (m *DBInput) GetParam() map[string]string {
+	if m != nil {
+		return m.Param
+	}
+	return nil
+}
+
+type DBOutput struct {
+	Result string `protobuf:"bytes,1,opt,name=result" json:"result,omitempty"`
+}
+
+func (m *DBOutput) Reset()                    { *m = DBOutput{} }
+func (m *DBOutput) String() string            { return proto.CompactTextString(m) }
+func (*DBOutput) ProtoMessage()               {}
+func (*DBOutput) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *DBOutput) GetResult() string {
+	if m != nil {
+		return m.Result
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*DBInput)(nil), "DBInput")
+	proto.RegisterType((*DBOutput)(nil), "DBOutput")
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc1.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc1.SupportPackageIsVersion4
+
+// Client API for DB service
+
+type DBClient interface {
+	Exec(ctx context.Context, in *DBInput, opts ...grpc1.CallOption) (*DBOutput, error)
+}
+
+type dBClient struct {
+	cc *grpc1.ClientConn
+}
+
+func NewDBClient(cc *grpc1.ClientConn) DBClient {
+	return &dBClient{cc}
+}
+
+func (c *dBClient) Exec(ctx context.Context, in *DBInput, opts ...grpc1.CallOption) (*DBOutput, error) {
+	out := new(DBOutput)
+	err := grpc1.Invoke(ctx, "/DB/exec", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for DB service
+
+type DBServer interface {
+	Exec(context.Context, *DBInput) (*DBOutput, error)
+}
+
+func RegisterDBServer(s *grpc1.Server, srv DBServer) {
+	s.RegisterService(&_DB_serviceDesc, srv)
+}
+
+func _DB_Exec_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc1.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DBInput)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DBServer).Exec(ctx, in)
+	}
+	info := &grpc1.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/DB/Exec",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DBServer).Exec(ctx, req.(*DBInput))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _DB_serviceDesc = grpc1.ServiceDesc{
+	ServiceName: "DB",
+	HandlerType: (*DBServer)(nil),
+	Methods: []grpc1.MethodDesc{
+		{
+			MethodName: "exec",
+			Handler:    _DB_Exec_Handler,
+		},
+	},
+	Streams:  []grpc1.StreamDesc{},
+	Metadata: "grpc.proto",
+}
+
+func init() { proto.RegisterFile("grpc.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 233 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x44, 0x90, 0x41, 0x4f, 0xc2, 0x40,
+	0x10, 0x85, 0x6d, 0x2b, 0x95, 0x8e, 0x17, 0xb3, 0x1a, 0xd2, 0x34, 0x98, 0x90, 0x7a, 0xc1, 0xcb,
+	0x1c, 0xf0, 0x42, 0x3c, 0x36, 0xeb, 0xc1, 0x93, 0x86, 0x7f, 0xb0, 0x94, 0x01, 0x8d, 0x5b, 0x66,
+	0xb3, 0xce, 0xa2, 0xfc, 0x1f, 0x7f, 0xa8, 0x29, 0x2c, 0xe1, 0xb6, 0xef, 0xdb, 0x79, 0xf3, 0x5e,
+	0x06, 0x60, 0xe3, 0x5d, 0x8b, 0xce, 0xb3, 0x70, 0xfd, 0x97, 0xc0, 0x95, 0x6e, 0x5e, 0xb7, 0x2e,
+	0x88, 0x1a, 0x43, 0x21, 0xc6, 0x6f, 0x48, 0xb4, 0xe1, 0x32, 0x99, 0x24, 0xd3, 0x62, 0x71, 0x06,
+	0x6a, 0x04, 0x79, 0x47, 0xf2, 0xc1, 0xab, 0x32, 0x3d, 0x7c, 0x45, 0xa5, 0x1e, 0x61, 0xe0, 0x8c,
+	0x37, 0x5d, 0x99, 0x4d, 0xb2, 0xe9, 0xf5, 0xec, 0x16, 0xe3, 0x3a, 0x7c, 0xef, 0xe9, 0xcb, 0x56,
+	0xfc, 0x7e, 0x71, 0x9c, 0xa8, 0xe6, 0x00, 0x67, 0xa8, 0x6e, 0x20, 0xfb, 0xa2, 0x7d, 0x0c, 0xea,
+	0x9f, 0xea, 0x0e, 0x06, 0x3b, 0x63, 0x03, 0xc5, 0x84, 0xa3, 0x78, 0x4e, 0xe7, 0x49, 0x5d, 0xc3,
+	0x50, 0x37, 0x6f, 0x41, 0xfa, 0x9a, 0x23, 0xc8, 0x3d, 0x7d, 0x07, 0x2b, 0xd1, 0x1a, 0xd5, 0xec,
+	0x01, 0x52, 0xdd, 0xa8, 0x7b, 0xb8, 0xa4, 0x5f, 0x6a, 0xd5, 0xf0, 0xd4, 0xa3, 0x2a, 0xf0, 0x64,
+	0xad, 0x2f, 0x9a, 0x31, 0x54, 0x2d, 0x77, 0x68, 0xd9, 0xac, 0x2d, 0x21, 0xef, 0xc8, 0xaf, 0x2d,
+	0xff, 0xe0, 0x6a, 0x89, 0xc6, 0x7d, 0x2e, 0xf3, 0xc3, 0x51, 0x9e, 0xfe, 0x03, 0x00, 0x00, 0xff,
+	0xff, 0x2f, 0xe5, 0x6c, 0xa7, 0x22, 0x01, 0x00, 0x00,
+}
diff --git a/build/java/com/loafle/overflow/db/api/Grpc.java b/build/java/com/loafle/overflow/db/api/Grpc.java
new file mode 100644
index 0000000..0224648
--- /dev/null
+++ b/build/java/com/loafle/overflow/db/api/Grpc.java
@@ -0,0 +1,1558 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: grpc.proto
+
+package com.loafle.overflow.db.api;
+
+public final class Grpc {
+  private Grpc() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  public interface DBInputOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:DBInput)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string targetDao = 1;</code>
+     */
+    java.lang.String getTargetDao();
+    /**
+     * <code>string targetDao = 1;</code>
+     */
+    com.google.protobuf.ByteString
+        getTargetDaoBytes();
+
+    /**
+     * <code>string method = 2;</code>
+     */
+    java.lang.String getMethod();
+    /**
+     * <code>string method = 2;</code>
+     */
+    com.google.protobuf.ByteString
+        getMethodBytes();
+
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+    int getParamCount();
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+    boolean containsParam(
+        java.lang.String key);
+    /**
+     * Use {@link #getParamMap()} instead.
+     */
+    @java.lang.Deprecated
+    java.util.Map<java.lang.String, java.lang.String>
+    getParam();
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+    java.util.Map<java.lang.String, java.lang.String>
+    getParamMap();
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    java.lang.String getParamOrDefault(
+        java.lang.String key,
+        java.lang.String defaultValue);
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    java.lang.String getParamOrThrow(
+        java.lang.String key);
+  }
+  /**
+   * Protobuf type {@code DBInput}
+   */
+  public  static final class DBInput extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:DBInput)
+      DBInputOrBuilder {
+    // Use DBInput.newBuilder() to construct.
+    private DBInput(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private DBInput() {
+      targetDao_ = "";
+      method_ = "";
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
+    }
+    private DBInput(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      int mutable_bitField0_ = 0;
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!input.skipField(tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              targetDao_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              method_ = s;
+              break;
+            }
+            case 26: {
+              if (!((mutable_bitField0_ & 0x00000004) == 0x00000004)) {
+                param_ = com.google.protobuf.MapField.newMapField(
+                    ParamDefaultEntryHolder.defaultEntry);
+                mutable_bitField0_ |= 0x00000004;
+              }
+              com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
+              param__ = input.readMessage(
+                  ParamDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+              param_.getMutableMap().put(
+                  param__.getKey(), param__.getValue());
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.loafle.overflow.db.api.Grpc.internal_static_DBInput_descriptor;
+    }
+
+    @SuppressWarnings({"rawtypes"})
+    protected com.google.protobuf.MapField internalGetMapField(
+        int number) {
+      switch (number) {
+        case 3:
+          return internalGetParam();
+        default:
+          throw new RuntimeException(
+              "Invalid map field number: " + number);
+      }
+    }
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.loafle.overflow.db.api.Grpc.internal_static_DBInput_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.loafle.overflow.db.api.Grpc.DBInput.class, com.loafle.overflow.db.api.Grpc.DBInput.Builder.class);
+    }
+
+    private int bitField0_;
+    public static final int TARGETDAO_FIELD_NUMBER = 1;
+    private volatile java.lang.Object targetDao_;
+    /**
+     * <code>string targetDao = 1;</code>
+     */
+    public java.lang.String getTargetDao() {
+      java.lang.Object ref = targetDao_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        targetDao_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string targetDao = 1;</code>
+     */
+    public com.google.protobuf.ByteString
+        getTargetDaoBytes() {
+      java.lang.Object ref = targetDao_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        targetDao_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int METHOD_FIELD_NUMBER = 2;
+    private volatile java.lang.Object method_;
+    /**
+     * <code>string method = 2;</code>
+     */
+    public java.lang.String getMethod() {
+      java.lang.Object ref = method_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        method_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string method = 2;</code>
+     */
+    public com.google.protobuf.ByteString
+        getMethodBytes() {
+      java.lang.Object ref = method_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        method_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int PARAM_FIELD_NUMBER = 3;
+    private static final class ParamDefaultEntryHolder {
+      static final com.google.protobuf.MapEntry<
+          java.lang.String, java.lang.String> defaultEntry =
+              com.google.protobuf.MapEntry
+              .<java.lang.String, java.lang.String>newDefaultInstance(
+                  com.loafle.overflow.db.api.Grpc.internal_static_DBInput_ParamEntry_descriptor, 
+                  com.google.protobuf.WireFormat.FieldType.STRING,
+                  "",
+                  com.google.protobuf.WireFormat.FieldType.STRING,
+                  "");
+    }
+    private com.google.protobuf.MapField<
+        java.lang.String, java.lang.String> param_;
+    private com.google.protobuf.MapField<java.lang.String, java.lang.String>
+    internalGetParam() {
+      if (param_ == null) {
+        return com.google.protobuf.MapField.emptyMapField(
+            ParamDefaultEntryHolder.defaultEntry);
+      }
+      return param_;
+    }
+
+    public int getParamCount() {
+      return internalGetParam().getMap().size();
+    }
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    public boolean containsParam(
+        java.lang.String key) {
+      if (key == null) { throw new java.lang.NullPointerException(); }
+      return internalGetParam().getMap().containsKey(key);
+    }
+    /**
+     * Use {@link #getParamMap()} instead.
+     */
+    @java.lang.Deprecated
+    public java.util.Map<java.lang.String, java.lang.String> getParam() {
+      return getParamMap();
+    }
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    public java.util.Map<java.lang.String, java.lang.String> getParamMap() {
+      return internalGetParam().getMap();
+    }
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    public java.lang.String getParamOrDefault(
+        java.lang.String key,
+        java.lang.String defaultValue) {
+      if (key == null) { throw new java.lang.NullPointerException(); }
+      java.util.Map<java.lang.String, java.lang.String> map =
+          internalGetParam().getMap();
+      return map.containsKey(key) ? map.get(key) : defaultValue;
+    }
+    /**
+     * <code>map&lt;string, string&gt; param = 3;</code>
+     */
+
+    public java.lang.String getParamOrThrow(
+        java.lang.String key) {
+      if (key == null) { throw new java.lang.NullPointerException(); }
+      java.util.Map<java.lang.String, java.lang.String> map =
+          internalGetParam().getMap();
+      if (!map.containsKey(key)) {
+        throw new java.lang.IllegalArgumentException();
+      }
+      return map.get(key);
+    }
+
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!getTargetDaoBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, targetDao_);
+      }
+      if (!getMethodBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, method_);
+      }
+      com.google.protobuf.GeneratedMessageV3
+        .serializeStringMapTo(
+          output,
+          internalGetParam(),
+          ParamDefaultEntryHolder.defaultEntry,
+          3);
+    }
+
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!getTargetDaoBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, targetDao_);
+      }
+      if (!getMethodBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, method_);
+      }
+      for (java.util.Map.Entry<java.lang.String, java.lang.String> entry
+           : internalGetParam().getMap().entrySet()) {
+        com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
+        param__ = ParamDefaultEntryHolder.defaultEntry.newBuilderForType()
+            .setKey(entry.getKey())
+            .setValue(entry.getValue())
+            .build();
+        size += com.google.protobuf.CodedOutputStream
+            .computeMessageSize(3, param__);
+      }
+      memoizedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.loafle.overflow.db.api.Grpc.DBInput)) {
+        return super.equals(obj);
+      }
+      com.loafle.overflow.db.api.Grpc.DBInput other = (com.loafle.overflow.db.api.Grpc.DBInput) obj;
+
+      boolean result = true;
+      result = result && getTargetDao()
+          .equals(other.getTargetDao());
+      result = result && getMethod()
+          .equals(other.getMethod());
+      result = result && internalGetParam().equals(
+          other.internalGetParam());
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + TARGETDAO_FIELD_NUMBER;
+      hash = (53 * hash) + getTargetDao().hashCode();
+      hash = (37 * hash) + METHOD_FIELD_NUMBER;
+      hash = (53 * hash) + getMethod().hashCode();
+      if (!internalGetParam().getMap().isEmpty()) {
+        hash = (37 * hash) + PARAM_FIELD_NUMBER;
+        hash = (53 * hash) + internalGetParam().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
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+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
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+    public static com.loafle.overflow.db.api.Grpc.DBInput parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
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+    public static com.loafle.overflow.db.api.Grpc.DBInput parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.loafle.overflow.db.api.Grpc.DBInput prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code DBInput}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:DBInput)
+        com.loafle.overflow.db.api.Grpc.DBInputOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.loafle.overflow.db.api.Grpc.internal_static_DBInput_descriptor;
+      }
+
+      @SuppressWarnings({"rawtypes"})
+      protected com.google.protobuf.MapField internalGetMapField(
+          int number) {
+        switch (number) {
+          case 3:
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+        }
+      }
+      @SuppressWarnings({"rawtypes"})
+      protected com.google.protobuf.MapField internalGetMutableMapField(
+          int number) {
+        switch (number) {
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+                "Invalid map field number: " + number);
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+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
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+      }
+
+      // Construct using com.loafle.overflow.db.api.Grpc.DBInput.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
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+      public Builder clear() {
+        super.clear();
+        targetDao_ = "";
+
+        method_ = "";
+
+        internalGetMutableParam().clear();
+        return this;
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.loafle.overflow.db.api.Grpc.internal_static_DBInput_descriptor;
+      }
+
+      public com.loafle.overflow.db.api.Grpc.DBInput getDefaultInstanceForType() {
+        return com.loafle.overflow.db.api.Grpc.DBInput.getDefaultInstance();
+      }
+
+      public com.loafle.overflow.db.api.Grpc.DBInput build() {
+        com.loafle.overflow.db.api.Grpc.DBInput result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public com.loafle.overflow.db.api.Grpc.DBInput buildPartial() {
+        com.loafle.overflow.db.api.Grpc.DBInput result = new com.loafle.overflow.db.api.Grpc.DBInput(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        result.targetDao_ = targetDao_;
+        result.method_ = method_;
+        result.param_ = internalGetParam();
+        result.param_.makeImmutable();
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          Object value) {
+        return (Builder) super.setField(field, value);
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+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
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+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
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+          Object value) {
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+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.loafle.overflow.db.api.Grpc.DBInput) {
+          return mergeFrom((com.loafle.overflow.db.api.Grpc.DBInput)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.loafle.overflow.db.api.Grpc.DBInput other) {
+        if (other == com.loafle.overflow.db.api.Grpc.DBInput.getDefaultInstance()) return this;
+        if (!other.getTargetDao().isEmpty()) {
+          targetDao_ = other.targetDao_;
+          onChanged();
+        }
+        if (!other.getMethod().isEmpty()) {
+          method_ = other.method_;
+          onChanged();
+        }
+        internalGetMutableParam().mergeFrom(
+            other.internalGetParam());
+        onChanged();
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.loafle.overflow.db.api.Grpc.DBInput parsedMessage = null;
+        try {
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+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.loafle.overflow.db.api.Grpc.DBInput) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
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+        }
+        return this;
+      }
+      private int bitField0_;
+
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+      /**
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+          java.lang.String s = bs.toStringUtf8();
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+          targetDao_ = b;
+          return b;
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+        }
+      }
+      /**
+       * <code>string targetDao = 1;</code>
+       */
+      public Builder setTargetDao(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        targetDao_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string targetDao = 1;</code>
+       */
+      public Builder clearTargetDao() {
+        
+        targetDao_ = getDefaultInstance().getTargetDao();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string targetDao = 1;</code>
+       */
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+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        targetDao_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object method_ = "";
+      /**
+       * <code>string method = 2;</code>
+       */
+      public java.lang.String getMethod() {
+        java.lang.Object ref = method_;
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+          com.google.protobuf.ByteString bs =
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+          java.lang.String s = bs.toStringUtf8();
+          method_ = s;
+          return s;
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+      /**
+       * <code>string method = 2;</code>
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+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
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+  
+        method_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string method = 2;</code>
+       */
+      public Builder clearMethod() {
+        
+        method_ = getDefaultInstance().getMethod();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string method = 2;</code>
+       */
+      public Builder setMethodBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        method_ = value;
+        onChanged();
+        return this;
+      }
+
+      private com.google.protobuf.MapField<
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+      private com.google.protobuf.MapField<java.lang.String, java.lang.String>
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+        if (param_ == null) {
+          return com.google.protobuf.MapField.emptyMapField(
+              ParamDefaultEntryHolder.defaultEntry);
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+        return param_;
+      }
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+        onChanged();;
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+        return param_;
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+      /**
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+      public boolean containsParam(
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+       */
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+      public java.util.Map<java.lang.String, java.lang.String> getParam() {
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+
+      public java.util.Map<java.lang.String, java.lang.String> getParamMap() {
+        return internalGetParam().getMap();
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+      /**
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+
+      public java.lang.String getParamOrDefault(
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+      /**
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+        if (key == null) { throw new java.lang.NullPointerException(); }
+        java.util.Map<java.lang.String, java.lang.String> map =
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+        if (!map.containsKey(key)) {
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+        }
+        return map.get(key);
+      }
+
+      public Builder clearParam() {
+        internalGetMutableParam().getMutableMap()
+            .clear();
+        return this;
+      }
+      /**
+       * <code>map&lt;string, string&gt; param = 3;</code>
+       */
+
+      public Builder removeParam(
+          java.lang.String key) {
+        if (key == null) { throw new java.lang.NullPointerException(); }
+        internalGetMutableParam().getMutableMap()
+            .remove(key);
+        return this;
+      }
+      /**
+       * Use alternate mutation accessors instead.
+       */
+      @java.lang.Deprecated
+      public java.util.Map<java.lang.String, java.lang.String>
+      getMutableParam() {
+        return internalGetMutableParam().getMutableMap();
+      }
+      /**
+       * <code>map&lt;string, string&gt; param = 3;</code>
+       */
+      public Builder putParam(
+          java.lang.String key,
+          java.lang.String value) {
+        if (key == null) { throw new java.lang.NullPointerException(); }
+        if (value == null) { throw new java.lang.NullPointerException(); }
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+            .put(key, value);
+        return this;
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+      public Builder putAllParam(
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+        return this;
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+      public final Builder mergeUnknownFields(
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+
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+    }
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+    private static final com.loafle.overflow.db.api.Grpc.DBInput DEFAULT_INSTANCE;
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+    }
+
+    public static com.loafle.overflow.db.api.Grpc.DBInput getDefaultInstance() {
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+    }
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+      public DBInput parsePartialFrom(
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+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
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+
+    public static com.google.protobuf.Parser<DBInput> parser() {
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+    @java.lang.Override
+    public com.google.protobuf.Parser<DBInput> getParserForType() {
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+    }
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+    public com.loafle.overflow.db.api.Grpc.DBInput getDefaultInstanceForType() {
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+      }
+    }
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+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
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+      if (!(obj instanceof com.loafle.overflow.db.api.Grpc.DBOutput)) {
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+      return PARSER.parseFrom(data);
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+    public static com.loafle.overflow.db.api.Grpc.DBOutput parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+    public static com.loafle.overflow.db.api.Grpc.DBOutput parseFrom(
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+        if (!result.isInitialized()) {
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+      public Builder mergeFrom(com.loafle.overflow.db.api.Grpc.DBOutput other) {
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+  
+        result_ = value;
+        onChanged();
+        return this;
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+      /**
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+      public Builder clearResult() {
+        
+        result_ = getDefaultInstance().getResult();
+        onChanged();
+        return this;
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+      /**
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+        result_ = value;
+        onChanged();
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+      public final Builder mergeUnknownFields(
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+    }
+
+    public static com.loafle.overflow.db.api.Grpc.DBOutput getDefaultInstance() {
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+
+    public static com.google.protobuf.Parser<DBOutput> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<DBOutput> getParserForType() {
+      return PARSER;
+    }
+
+    public com.loafle.overflow.db.api.Grpc.DBOutput getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
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+  private static final 
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+  // @@protoc_insertion_point(outer_class_scope)
+}