![]() ![]() This is a builder interface created from a DataSource or XADataSource object, used to create a ShardingKey with subkeys of supported data types. You can create a ShardingKey instance using the ShardingKeyBuilder interface. This interface is used to indicate that the current object represents a Sharding Key. This is a builder interface created from a XADataSource object, which you can use to establish a connection to the database that the data source object represents. Sharding support includes addition of the following APIs: You can use the DatabaseMetaData.supportsSharding method to determine whether a JDBC Driver supports sharding or not. All shards together make up a single logical database, which is referred to as a sharded database (SDB). Each database in such a configuration is called a shard. Sharding is a data tier architecture, where data is horizontally partitioned across independent databases. tObject(1, Integer.valueOf(empId), OracleType.NUMBER) The following code snippet shows how to use the setObject method:Ĭonnection.prepareStatement("SELECT FIRST_NAME, LAST_NAME FROM EMPLOYEES WHERE EMPNO = ?") The registerOutParameter method registers a specified parameter to be of JDBC type SQLType. The updateObject method takes the column index as a parameter and updates the designated column with an Object value. Void setObject(int parameterIndex, x, SQLType targetSqlType) throws SQLException The default implementation of this method throws SQLFeatureNotSupportedException. This method is similar to the setObject(int parameterIndex, Object x, SQLType targetSqlType, int scaleOrLength) method, except that it assumes a scale of zero. The setObject method sets the value of the designated parameter for the specified object. This release of Oracle JDBC drivers support the following methods introduced in JDBC 4.2 standard, which take SQLType parameters: ![]() Long updateCount = stmt.executeLargeUpdate("insert into BloggersData (FIRST_NAME,ID) values('John',1)") Stmt.executeQuery("create table BloggersData (FIRST_NAME varchar(100), ID int)") The following code snippet shows how to use the executeLargeUpdate(String sql) method: If the number of rows is greater than the value of Integer.MAX_VALUE, then your application must use the executeLargeUpdate method. For example, the executeUpdate method returns the number of rows updated as an int value, whereas, the executeLargeUpdate method returns the number of rows updated as a long value. The %Large% methods are identical to the corresponding non-large methods, except that they work with long values instead of int values. These new methods are available as part of the interface. We should note that before this long-running project, there were JDK Release Projects that released one feature and were then discontinued.This release of Oracle JDBC drivers support the following methods introduced in JDBC 4.2 standard, which deal with long values:ĮxecuteLargeUpdate(String sql, int autoGeneratedKeys)ĮxecuteLargeUpdate(String sql, int columnIndexes)ĮxecuteLargeUpdate(String sql, String columnNames) It has everything the JRE has, but adds the compiler (javac) and tools (like javadoc. And, just like for Oracle, the JDK Project will also deliver new feature releases every six months. The Java Development Kit (JDK) is the full-featured software development kit for Java developers. Initially, it was based only on the JDK 7, but since Java 10, the open-source reference implementation of the Java SE platform is the responsibility of the JDK Project. We should emphasize that OpenJDK is an official reference implementation of a Java Standard Edition since version SE 7. The installation of the JDK 11 requires macOS 10.11 or later. Note: the versions in italics are no longer supported. You can download JDK from Java SE Development Kit Downloads page. Let's take a look at the Java SE history: ![]() Oracle strongly recommends using the term JDK to refer to the Java SE (Standard Edition) Development Kit (there are also Enterprise Edition and Micro Edition platforms). It's thus named because it contains more tools than the standalone JRE, as well as the other components needed for developing Java applications. It contains a complete Java Runtime Environment, a so-called private runtime. JDK (Java Development Kit) is a software development environment used in Java platform programming. ![]()
0 Comments
Leave a Reply. |