upgrading for mysql 8 support

Author: PicoCreator

build.gradle

@@ -92,7 +92,7 @@ dependencies {
 
 	// api files("./lib/jsql/ojdbc6.jar")  // for oracle	
 	api "org.xerial:sqlite-jdbc:3.25.2" // for sqlite
-	api "mysql:mysql-connector-java:6.0.6" // for mysql
+	api "mysql:mysql-connector-java:8.0.26" // for mysql
 
 	// Newer MSSQL connection (THIS DOES NOT WORK)
 	// api "com.microsoft.sqlserver:mssql-jdbc:7.2.1.jre8" // for mssql
@@ -266,6 +266,12 @@ test {
 		// As our test tends to be io-blocked rather then cpu
 		// we will run more tests in parallels
 		maxParallelForks = (Runtime.runtime.availableProcessors() * 2) as int
+
+		// We clamp this to 12 threads, because the high volume of SQL test
+		// can currently cause connection errors on the test servers
+		if( maxParallelForks > 12 ) {
+			maxParallelForks = 12;
+		}
 	}
 
 	// Set up the number of tests per fork

src/main/java/picoded/dstack/connector/jsql/HikaricpUtil.java

@@ -217,7 +217,7 @@ public static HikariDataSource mysql(GenericConvertMap config) {
 		}
 
 		// Setup the configured connection URL + DB
-		hconfig.setDriverClassName("com.mysql.cj.jdbc.Driver");
+		// hconfig.setDriverClassName("com.mysql.cj.jdbc.Driver");
 
 		hconfig.setJdbcUrl("jdbc:mysql://" + host + ":" + port + "/" + name);
 
@@ -233,7 +233,7 @@ public static HikariDataSource mysql(GenericConvertMap config) {
 			config.getBoolean("cachePrepStmts", true) //
 			);
 		hconfig.addDataSourceProperty("prepStmtCacheSize", //
-			config.getInt("prepStmtCacheSize", 250) //
+			config.getInt("prepStmtCacheSize", 500) //
 			);
 		hconfig.addDataSourceProperty("prepStmtCacheSqlLimit", //
 			config.getInt("prepStmtCacheSqlLimit", 2048) //

src/test/java/picoded/dstack/jsql/mysql/JSql_DataObjectMap_Mysql_test.java

@@ -0,0 +1,21 @@
+package picoded.dstack.jsql.mysql;
+
+// Test depends
+import picoded.dstack.*;
+import picoded.dstack.jsql.*;
+import picoded.dstack.connector.jsql.*;
+import picoded.dstack.struct.simple.*;
+
+public class JSql_DataObjectMap_Mysql_test extends JSql_DataObjectMap_test {
+	
+	// To override for implementation
+	//-----------------------------------------------------
+	
+	/// Note that this SQL connector constructor
+	/// is to be overriden for the various backend
+	/// specific test cases
+	public JSql jsqlConnection() {
+		return JSqlTestConnection.mysql();
+	}
+	
+}