example: merge C Session demos into client-cpp-example

Move tree_example.c and table_example.c into client-cpp-example, build them from the shared CMake entry, and update EN/ZH docs. Remove the standalone client-c-example module and drop it from the with-cpp profile.

Author: hongzhi-gao

example/client-c-example/README.md

@@ -36,6 +36,8 @@ user `root` / `root`).
 | `AlignedTimeseriesSessionExample` | Aligned time series and templates |
 | `TableModelSessionExample` | Table (relational) model |
 | `MultiSvrNodeClient` | Multi-node insert/query loop |
+| `tree_example` | C Session API (tree model) |
+| `table_example` | C Session API (table model) |
 
 ## Which SDK zip to use
 
@@ -92,7 +94,7 @@ the generator; on Windows with Visual Studio: `target/Release/`).
 
 1. Build or download the SDK and unpack it so `client/include` and
    `client/lib` exist (see layout above).
-2. Copy `src/*.cpp` and `src/CMakeLists.txt` into one directory (or use
+2. Copy `src/*.{cpp,c}` and `src/CMakeLists.txt` into one directory (or use
    `src/` as the source tree and place `client/` beside it).
 3. Configure and build:
 
@@ -248,7 +250,9 @@ client-cpp-example/
     ├── SessionExample.cpp
     ├── AlignedTimeseriesSessionExample.cpp
     ├── TableModelSessionExample.cpp
-    └── MultiSvrNodeClient.cpp
+    ├── MultiSvrNodeClient.cpp
+    ├── tree_example.c
+    └── table_example.c
 ```
 
 After `mvn package`, the runnable tree is under `target/` (sources, `client/`,

example/client-c-example/pom.xml

@@ -35,6 +35,8 @@
 | `AlignedTimeseriesSessionExample` | 对齐时间序列与模板 |
 | `TableModelSessionExample` | 表模型（关系型） |
 | `MultiSvrNodeClient` | 多节点写入/查询循环 |
+| `tree_example` | C Session API（树模型） |
+| `table_example` | C Session API（表模型） |
 
 ## 选择哪个 SDK 压缩包
 
@@ -89,7 +91,7 @@ Windows + Visual Studio 一般为 `target/Release/`）。
 
 1. 自行编译或下载 SDK，解压后保证存在 `client/include` 与 `client/lib`（见
    上文目录结构）。
-2. 将 `src/*.cpp` 与 `src/CMakeLists.txt` 放在同一目录（或保留 `src/`
+2. 将 `src/*.{cpp,c}` 与 `src/CMakeLists.txt` 放在同一目录（或保留 `src/`
    结构，并在同级放置 `client/`）。
 3. 配置并编译：
 
@@ -241,7 +243,9 @@ client-cpp-example/
     ├── SessionExample.cpp
     ├── AlignedTimeseriesSessionExample.cpp
     ├── TableModelSessionExample.cpp
-    └── MultiSvrNodeClient.cpp
+    ├── MultiSvrNodeClient.cpp
+    ├── tree_example.c
+    └── table_example.c
 ```
 
 执行 `mvn package` 后，可在 `target/` 下找到源码、`client/` SDK 与 CMake

example/client-cpp-example/README.md

@@ -68,6 +68,14 @@
                                     <sourceFile>${project.basedir}/src/MultiSvrNodeClient.cpp</sourceFile>
                                     <destinationFile>${project.build.directory}/MultiSvrNodeClient.cpp</destinationFile>
                                 </fileSet>
+                                <fileSet>
+                                    <sourceFile>${project.basedir}/src/tree_example.c</sourceFile>
+                                    <destinationFile>${project.build.directory}/tree_example.c</destinationFile>
+                                </fileSet>
+                                <fileSet>
+                                    <sourceFile>${project.basedir}/src/table_example.c</sourceFile>
+                                    <destinationFile>${project.build.directory}/table_example.c</destinationFile>
+                                </fileSet>
                                 <fileSet>
                                     <sourceFile>${project.basedir}/src/CMakeLists.txt</sourceFile>
                                     <destinationFile>${project.build.directory}/CMakeLists.txt</destinationFile>

example/client-cpp-example/README_zh.md

@@ -72,12 +72,16 @@ ADD_EXECUTABLE(SessionExample SessionExample.cpp)
 ADD_EXECUTABLE(AlignedTimeseriesSessionExample AlignedTimeseriesSessionExample.cpp)
 ADD_EXECUTABLE(TableModelSessionExample TableModelSessionExample.cpp)
 ADD_EXECUTABLE(MultiSvrNodeClient MultiSvrNodeClient.cpp)
+ADD_EXECUTABLE(tree_example tree_example.c)
+ADD_EXECUTABLE(table_example table_example.c)
 
 set(_example_targets
     SessionExample
     AlignedTimeseriesSessionExample
     TableModelSessionExample
-    MultiSvrNodeClient)
+    MultiSvrNodeClient
+    tree_example
+    table_example)
 
 foreach(_t IN LISTS _example_targets)
   IF(WITH_SSL)

example/client-cpp-example/pom.xml

@@ -46,7 +46,6 @@ static void fail(const char* ctx, CTableSession* s) {
 }
 
 int main(void) {
-    /* Last arg: default database name; empty string leaves it unset (we USE "cdemo_db" via SQL below). */
     CTableSession* session = ts_table_session_new(HOST, PORT, USER, PASS, "");
     if (!session) {
         fprintf(stderr, "[table_example] ts_table_session_new returned NULL: %s\n", ts_get_last_error());

example/client-cpp-example/src/CMakeLists.txt

@@ -22,9 +22,9 @@
  * Edit HOST / PORT / credentials below to match your IoTDB.
  */
 
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <string.h>
 
 #include "SessionC.h"

…ple/client-c-example/src/table_example.c …e/client-cpp-example/src/table_example.cexample/client-c-example/src/table_example.c renamed to example/client-cpp-example/src/table_example.c example/client-c-example/src/table_example.c renamed to example/client-cpp-example/src/table_example.c

@@ -85,7 +85,6 @@
             <id>with-cpp</id>
             <modules>
                 <module>client-cpp-example</module>
-                <module>client-c-example</module>
             </modules>
         </profile>
     </profiles>