RxJdbc modified by Gary Cheng

Gary Cheng — Thu, 29 Mar 2018 10:50:19 -0000

--- v1
+++ v2
@@ -1,20 +1,27 @@
 ~~~
 package com.example.jdbc;

+import io.reactivex.Observable;
 import io.reactivex.Single;
 import io.vertx.core.DeploymentOptions;
+import io.vertx.core.json.JsonArray;
 import io.vertx.core.json.JsonObject;
+import io.vertx.ext.sql.UpdateResult;
 import io.vertx.reactivex.core.AbstractVerticle;
 import io.vertx.reactivex.core.Vertx;
 import io.vertx.reactivex.ext.jdbc.JDBCClient;
+import io.vertx.reactivex.ext.sql.SQLConnection;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 public class RxJDBCExample extends AbstractVerticle {
     private static final Logger logger = LoggerFactory.getLogger(RxJDBCExample.class);
     private static final String CONFIG_FILE = "src/config/app-conf.json";
+    private static final String SQL_CREATE_TABLE = "CREATE TABLE Product(PROD_ID VARCHAR(20) PRIMARY KEY, PROD_NAME VARCHAR(200) NOT NULL)";
+    private static final String SQL_INSERT_PRODUCT = "INSERT INTO Product(PROD_ID, PROD_NAME) VALUES (?, ?)";
+    private static final String SQL_SELECT_PRODUCTS = "SELECT * FROM Product";

-    private JDBCClient jdbcClient;
+    private JDBCClient jdbc;

     public static void main(String[] args) {
         Vertx vertx = Vertx.vertx();
@@ -29,9 +36,29 @@
         logger.debug("Verticle RxJDBCExample started");
         JsonObject config = this.config();
         logger.debug("Config:{}", config.toString());
-        jdbcClient = JDBCClient.createShared(vertx, config);
-        jdbcClient.rxGetConnection()
-                .subscribe(conn -> conn.rxUpdate("CREATE TABLE test(col VARCHAR(20))"));
+        jdbc = JDBCClient.createShared(vertx, config);
+        jdbc.rxGetConnection().flatMapPublisher(conn ->
+                conn.rxUpdate(SQL_CREATE_TABLE)
+                        .flatMap(res -> this.insertProduct(conn, "1", "Product 1"))
+                        .flatMap(res -> this.insertProduct(conn, "2", "Product 2"))
+                        .flatMap(res -> conn.rxQuery(SQL_SELECT_PRODUCTS))
+                        .flattenAsFlowable(resultSet -> resultSet.getRows())
+                        .doAfterTerminate(conn::close)
+        ).subscribe(json -> logger.debug(json.encodePrettily()));
+//        jdbc.rxGetConnection().flatMapPublisher(conn ->
+//                conn.rxUpdate(SQL_CREATE_TABLE)
+//                        .flatMap(res -> this.insertProduct(conn, "1", "Product 1"))
+//                        .flatMap(res -> this.insertProduct(conn, "2", "Product 2"))
+//                        .flatMap(res -> conn.rxQueryStream(SQL_SELECT_PRODUCTS))
+//                        .flatMapPublisher(sqlRowStream -> sqlRowStream.)
+//                        .doAfterTerminate(conn::close)
+//        ).subscribe(row -> logger.debug("row:{}", row.toString()));
+    }
+
+    private Single<UpdateResult> insertProduct(SQLConnection conn, String productId, String productName) {
+        logger.debug("Add product id:{}, name:{}", productId, productName);
+        JsonArray params = new JsonArray().add(productId).add(productName);
+        return conn.rxUpdateWithParams(SQL_INSERT_PRODUCT, params);
     }
 }
 ~~~

RxJdbc modified by Gary Cheng

Gary Cheng — Fri, 23 Mar 2018 20:21:09 -0000

package com.example.jdbc;

import io.reactivex.Single;
import io.vertx.core.DeploymentOptions;
import io.vertx.core.json.JsonObject;
import io.vertx.reactivex.core.AbstractVerticle;
import io.vertx.reactivex.core.Vertx;
import io.vertx.reactivex.ext.jdbc.JDBCClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RxJDBCExample extends AbstractVerticle {
    private static final Logger logger = LoggerFactory.getLogger(RxJDBCExample.class);
    private static final String CONFIG_FILE = "src/config/app-conf.json";

    private JDBCClient jdbcClient;

    public static void main(String[] args) {
        Vertx vertx = Vertx.vertx();
        vertx.fileSystem().rxReadFile(CONFIG_FILE)
                .flatMap(buffer -> Single.just(buffer.toJsonObject()))
                .flatMap(config -> vertx.rxDeployVerticle(RxJDBCExample.class.getName(), new DeploymentOptions().setConfig(config)))
                .subscribe(id -> logger.debug("Vertical deployed, deployment ID:{}", id));
    }

    @Override
    public void start() throws Exception {
        logger.debug("Verticle RxJDBCExample started");
        JsonObject config = this.config();
        logger.debug("Config:{}", config.toString());
        jdbcClient = JDBCClient.createShared(vertx, config);
        jdbcClient.rxGetConnection()
                .subscribe(conn -> conn.rxUpdate("CREATE TABLE test(col VARCHAR(20))"));
    }
}

Recent changes to RxJdbc

RxJdbc modified by Gary Cheng

RxJdbc modified by Gary Cheng