support hot only (#341)

Co-authored-by: WeiXinChan <chenwx6728@163.com>

Author: shenyunlong

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

@@ -79,6 +79,8 @@ public class ObTableQuery extends AbstractPayload {
 
     protected ObKVParams obKVParams = null;
 
+    protected ObTableQueryFlag flag = new ObTableQueryFlag(0);
+
     public void adjustStartKey(List<ObObj> key) throws IllegalArgumentException {
         List<ObNewRange> keyRanges = getKeyRanges();
         for (ObNewRange range : keyRanges) {
@@ -239,6 +241,10 @@ public byte[] encode() {
             idx += len;
         }
 
+        len = Serialization.getNeedBytes(flag.getValue());
+        System.arraycopy(Serialization.encodeVi64(flag.getValue()), 0, bytes, idx, len);
+        idx += len;
+
         return bytes;
     }
 
@@ -304,6 +310,10 @@ public Object decode(ByteBuf buf) {
             obKVParams = new ObKVParams();
             this.obKVParams.decode(buf);
         }
+
+        long tmpFlag = Serialization.decodeVi64(buf);
+        this.flag.setValue(tmpFlag);
+
         return this;
     }
 
@@ -349,6 +359,9 @@ public long getPayloadContentSize() {
         for (ObTableAggregationSingle obTableAggregationSingle : aggregations) {
             contentSize += obTableAggregationSingle.getPayloadSize();
         }
+
+        contentSize += Serialization.getNeedBytes(flag.getValue());
+
         return contentSize;
     }
 
@@ -579,4 +592,16 @@ public ObKVParams getObKVParams() {
     }
 
     public boolean isFTSQuery() { return isFTSQuery; }
+
+    public ObTableQueryFlag getFlag() {
+        return flag;
+    }
+
+    public void setFlag(ObTableQueryFlag flag) {
+        this.flag = flag;
+    }
+
+    public void setHotOnly(boolean hotOnly) {
+        this.flag.setHotOnly(hotOnly);
+    }
 }

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

@@ -0,0 +1,46 @@
+/*-
+ * #%L
+ * com.oceanbase:obkv-table-client
+ * %%
+ * Copyright (C) 2021 - 2025 OceanBase
+ * %%
+ * OBKV Table Client Framework is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ * #L%
+ */
+
+package com.alipay.oceanbase.rpc.protocol.payload.impl.execute.query;
+
+public class ObTableQueryFlag {
+    private static final int HOT_ONLY = 1 << 0;
+
+    private long             value    = 0;
+
+    public ObTableQueryFlag(long value) {
+        this.value = value;
+    }
+
+    public long getValue() {
+        return value;
+    }
+
+    public void setValue(long value) {
+        this.value = value;
+    }
+
+    public boolean isHotOnly() {
+        return (value & HOT_ONLY) != 0;
+    }
+
+    public void setHotOnly(boolean hotOnly) {
+        if (hotOnly) {
+            value = value | HOT_ONLY;
+        }
+    }
+};