org.sqlproc.engine

Interface SqlSession

All Known Implementing Classes:

JdbcSimpleSession

public interface SqlSession

The SQL Engine session contract definition. In fact it's an adapter or a proxy to an internal stuff in one of the stacks on top of which the SQL Processor works. It's the first parameter to all primary methods in the SqlQueryEngine and SqlCrudEngine. The implementation depends on the stack, on top of which the SQL Processor works. In this SQL Processor version the next stacks can be used:

• raw JDBC (default option)
• Hibernate ORM
• Spring DAO

For these stacks the next session objects can be utilized:

• For the raw JDBC stack the session is a wrapper around a Connection instance.
• For the Hibernate ORM the session is a wrapper around a Hibernate Session instance.
• For the Spring DAO the session is a wrapper around a Spring JdbcTemplate instance.

The primary contract is the method for the SqlQuery instance creation.

For the concrete implementation please see for example JdbcSession or JdbcSimpleSession.

For more info please see the Tutorials.

Author:

Vladimir Hudec

Method Summary

Methods

Modifier and Type	Method and Description
SqlQuery	createSqlQuery(String queryString) Creates a new instance of SqlQuery, which is a wrapper around the SQL query command.
int[]	executeBatch(String[] statements) Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.
String	getName() The name of the database related to this session.

Method Detail

createSqlQuery

SqlQuery createSqlQuery(String queryString)
                        throws SqlProcessorException

Creates a new instance of SqlQuery, which is a wrapper around the SQL query command.

Parameters:

queryString - the SQL query command

Returns:

a new instance of a wrapper around the SQL query command

Throws:

SqlProcessorException - in the case of any problem in ORM or JDBC stack

executeBatch

int[] executeBatch(String[] statements)
                   throws SqlProcessorException

Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.

Parameters:

statements - SQL statements to be executed in batch

Returns:

an array of update counts containing one element for each command in the batch

Throws:

SqlProcessorException - in the case of any problem in ORM or JDBC stack

getName

String getName()

The name of the database related to this session. It's usage is implementation specific.

Returns:

the name of the database related to this session