add OHOperationType enum

Author: JackShi148

src/main/java/com/alipay/oceanbase/rpc/protocol/payload/impl/execute/OHOperationType.java

@@ -0,0 +1,49 @@
+package com.alipay.oceanbase.rpc.protocol.payload.impl.execute;
+
+import java.util.*;
+
+public enum OHOperationType {
+    PUT(0),
+    PUT_LIST(1),
+    DELETE(2),
+    DELETE_LIST(3),
+    GET(4),
+    GET_LIST(5),
+    EXISTS(6),
+    EXISTS_LIST(7),
+    BATCH(8),
+    BATCH_CALLBACK(9),
+    SCAN(10),
+    CHECK_AND_PUT(11),
+    CHECK_AND_DELETE(12),
+    CHECK_AND_MUTATE(13),
+    APPEND(14),
+    INCREMENT(15),
+    INCREMENT_COLUMN_VALUE(16),
+    MUTATE_ROW(17);
+
+    private final int                                  value;
+    private static final Map<Integer, OHOperationType> map = new HashMap<Integer, OHOperationType>();
+
+    static {
+        for (OHOperationType type : OHOperationType.values()) {
+            map.put(type.value, type);
+        }
+    }
+
+    OHOperationType(int value) {
+        this.value = value;
+    }
+
+    public static OHOperationType valueOf(int value) {
+        return map.get(value);
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    public byte getByteValue() {
+        return (byte) value;
+    }
+}