Examples of org.springframework.jdbc.core.JdbcTemplate

org.springframework.jdbc.core.JdbcTemplate
This is the central class in the JDBC core package. It simplifies the use of JDBC and helps to avoid common errors. It executes core JDBC workflow, leaving application code to provide SQL and extract results. This class executes SQL queries or updates, initiating iteration over ResultSets and catching JDBC exceptions and translating them to the generic, more informative exception hierarchy defined in the org.springframework.dao package.
Code using this class need only implement callback interfaces, giving them a clearly defined contract. The {@link PreparedStatementCreator} callbackinterface creates a prepared statement given a Connection, providing SQL and any necessary parameters. The {@link ResultSetExtractor} interface extractsvalues from a ResultSet. See also {@link PreparedStatementSetter} and{@link RowMapper} for two popular alternative callback interfaces.
Can be used within a service implementation via direct instantiation with a DataSource reference, or get prepared in an application context and given to services as bean reference. Note: The DataSource should always be configured as a bean in the application context, in the first case given to the service directly, in the second case to the prepared template.
Because this class is parameterizable by the callback interfaces and the {@link org.springframework.jdbc.support.SQLExceptionTranslator}interface, there should be no need to subclass it.
All SQL operations performed by this class are logged at debug level, using "org.springframework.jdbc.core.JdbcTemplate" as log category. @author Rod Johnson @author Juergen Hoeller @author Thomas Risberg @since May 3, 2001 @see PreparedStatementCreator @see PreparedStatementSetter @see CallableStatementCreator @see PreparedStatementCallback @see CallableStatementCallback @see ResultSetExtractor @see RowCallbackHandler @see RowMapper @see org.springframework.jdbc.support.SQLExceptionTranslator

        jdbcTemplate.execute("insert into projects values (3, 'Linux', 'GPL')");
    }


    protected void tearDown() throws Exception {
        super.tearDown();
        JdbcTemplate jdbcTemplate = new JdbcTemplate(ds);
        jdbcTemplate.execute("drop table projects");
    }

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    protected void setUp() throws Exception {
        Class.forName(driverClass);
        super.setUp();


        jdbcTemplate = new JdbcTemplate(createDataSource());
        // START SNIPPET: e2
        // this is the database we create with some initial data for our unit test
        jdbcTemplate.execute("create table projects (id integer primary key,"
                             + "project varchar(10), license varchar(5))");
        jdbcTemplate.execute("insert into projects values (1, 'Camel', 'ASF')");

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        // END SNIPPET: e2
    }


    protected void tearDown() throws Exception {
        super.tearDown();
        JdbcTemplate jdbcTemplate = new JdbcTemplate(createDataSource());
        jdbcTemplate.execute("drop table projects");
    }

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    protected void setUp() throws Exception {
        Class.forName(driverClass);
        super.setUp();


        jdbcTemplate = new JdbcTemplate(ds);
        jdbcTemplate.execute("create table projects (id integer primary key,"
                             + "project varchar(10), license varchar(5))");
        jdbcTemplate.execute("insert into projects values (1, 'Camel', 'ASF')");
        jdbcTemplate.execute("insert into projects values (2, 'AMQ', 'ASF')");
        jdbcTemplate.execute("insert into projects values (3, 'Linux', 'GPL')");

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        jdbcTemplate.execute("insert into projects values (3, 'Linux', 'GPL')");
    }


    protected void tearDown() throws Exception {
        super.tearDown();
        JdbcTemplate jdbcTemplate = new JdbcTemplate(ds);
        jdbcTemplate.execute("drop table projects");
    }

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    private DeliveryChannel channel;
    
    private JdbcTemplate jdbcTemplate;
    
    public void setDataSource(DataSource dataSource) {
        this.jdbcTemplate = new JdbcTemplate(dataSource);
    }

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    protected void setUp() throws Exception {
        super.setUp();


        // create database and insert dummy data
        final DataSource ds = getMandatoryBean(DataSource.class, "dataSource");
        jdbc = new JdbcTemplate(ds);
    }

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        super.setUp();


        // START SNIPPET: e5
        // create database (dummy data already inserted by Spring)
        final DataSource ds = getMandatoryBean(DataSource.class, "dataSource");
        jdbc = new JdbcTemplate(ds);
        // END SNIPPET: e5
    }

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    protected void setUp() throws Exception {
        this.disableJMX();
        super.setUp();


        final DataSource ds = getMandatoryBean(DataSource.class, "dataSource");
        jdbc = new JdbcTemplate(ds);
    }

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    @Override
    protected void setUp() throws Exception {
        super.setUp();


        final DataSource ds = getMandatoryBean(DataSource.class, "dataSource");
        jdbc = new JdbcTemplate(ds);
    }

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