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

  }


  // Spring setters
  
  public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
  }

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  }


  // Spring setters


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

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  }


  // Spring setters
  
  public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
  }

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  }


  // Spring setters
  
  public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
  }

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  }


  // Spring setters


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

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   * @param functionName  Name of function
   * @param functionBody  Body of function
   * @throws ApplicationException On failure
   */
  public static void loadFunction(JdbcTemplateDao dao, PostgreSQLFunction dbFunction) throws ApplicationException {
    JdbcTemplate jdbcTemplate = dao.getJdbcTemplate();


    // initialize drop procedure, if database has been dropped
    jdbcTemplate.execute(new ResourceUtil(DROP_FUNCTION.getURI()).getContent());


    // drop previous function version, if necessary
    jdbcTemplate.queryForInt("select util.drop_function( ?,? )", 
        dbFunction.getSchema(), dbFunction.getFunctionName());


    // load new function body
    jdbcTemplate.execute(new ResourceUtil(dbFunction.getURI()).getContent());
  }

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      loadFunction(dao, dbFunction);
    }
  }
  
  public static void truncateTables(JdbcTemplateDao dao) throws ApplicationException {
    JdbcTemplate jdbcTemplate = dao.getJdbcTemplate();
    jdbcTemplate.execute("truncate music.artist cascade");
    jdbcTemplate.execute("truncate library.directory cascade");
    jdbcTemplate.execute("truncate music.tag cascade");
    jdbcTemplate.execute("truncate music.lastfmuser cascade");
    
    /*
     * If we really wanted to truncate all tables, we could do: 
     * loadFunction(dao, PostgreSQLFunction.TRUNCATE_ALL_TABLES);
     * jdbcTemplate.execute("select util.truncate_all_tables()");

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  }


  // Spring setters


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

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  }


  // Spring setters
  
  public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
  }

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  }
  
  // Spring setters
  
  public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
    parseJDBCURL();
  }

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