org.springframework.jdbc.object

## Class SqlUpdate

- java.lang.Object
- - org.springframework.jdbc.object.RdbmsOperation
  - - org.springframework.jdbc.object.SqlOperation
    - - org.springframework.jdbc.object.SqlUpdate

- All Implemented Interfaces:
    InitializingBean
  Direct Known Subclasses:
    BatchSqlUpdate

      public class SqlUpdate
      extends SqlOperation

  Reusable operation object representing a SQL update.

  This class provides a number of `update` methods, analogous to the `execute` methods of query objects.

  This class is concrete. Although it can be subclassed (for example to add a custom update method) it can easily be parameterized by setting SQL and declaring parameters.

  Like all `RdbmsOperation` classes that ship with the Spring Framework, `SqlQuery` instances are thread-safe after their initialization is complete. That is, after they are constructed and configured via their setter methods, they can be used safely from multiple threads.

  Author:
    Rod Johnson, Thomas Risberg, Juergen Hoeller
  See Also:
    `SqlQuery`

- - ### Field Summary

    - ### Fields inherited from class org.springframework.jdbc.object.RdbmsOperation

      `logger`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SqlUpdate()` Constructor to allow use as a JavaBean.
    `SqlUpdate(DataSource ds, String sql)` Constructs an update object with a given DataSource and SQL.
    `SqlUpdate(DataSource ds, String sql, int[] types)` Construct an update object with a given DataSource, SQL and anonymous parameters.
    `SqlUpdate(DataSource ds, String sql, int[] types, int maxRowsAffected)` Construct an update object with a given DataSource, SQL, anonymous parameters and specifying the maximum number of rows that may be affected.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected void` | `checkRowsAffected(int rowsAffected)` Check the given number of affected rows against the specified maximum number or required number.
    `void` | `setMaxRowsAffected(int maxRowsAffected)` Set the maximum number of rows that may be affected by this update.
    `void` | `setRequiredRowsAffected(int requiredRowsAffected)` Set the exact number of rows that must be affected by this update.
    `int` | `update()` Convenience method to execute an update with no parameters.
    `int` | `update(int p1)` Convenient method to execute an update given one int arg.
    `int` | `update(int p1, int p2)` Convenient method to execute an update given two int args.
    `int` | `update(long p1)` Convenient method to execute an update given one long arg.
    `int` | `update(long p1, long p2)` Convenient method to execute an update given two long args.
    `int` | `update(Object... params)` Generic method to execute the update given parameters.
    `int` | `update(Object[] params, KeyHolder generatedKeyHolder)` Method to execute the update given arguments and retrieve the generated keys using a KeyHolder.
    `int` | `update(String p)` Convenient method to execute an update given one String arg.
    `int` | `update(String p1, String p2)` Convenient method to execute an update given two String args.
    `int` | `updateByNamedParam(Map<String,?> paramMap)` Generic method to execute the update given named parameters.
    `int` | `updateByNamedParam(Map<String,?> paramMap, KeyHolder generatedKeyHolder)` Method to execute the update given arguments and retrieve the generated keys using a KeyHolder.

    - ### Methods inherited from class org.springframework.jdbc.object.SqlOperation

      `compileInternal, getParsedSql, newPreparedStatementCreator, newPreparedStatementCreator, newPreparedStatementSetter, onCompileInternal`

    - ### Methods inherited from class org.springframework.jdbc.object.RdbmsOperation

      `afterPropertiesSet, allowsUnusedParameters, checkCompiled, compile, declareParameter, getDeclaredParameters, getGeneratedKeysColumnNames, getJdbcTemplate, getResultSetType, getSql, isCompiled, isReturnGeneratedKeys, isUpdatableResults, setDataSource, setFetchSize, setGeneratedKeysColumnNames, setJdbcTemplate, setMaxRows, setParameters, setQueryTimeout, setResultSetType, setReturnGeneratedKeys, setSql, setTypes, setUpdatableResults, supportsLobParameters, validateNamedParameters, validateParameters`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### SqlUpdate

          public SqlUpdate()

      Constructor to allow use as a JavaBean. DataSource and SQL must be supplied before compilation and use.
      See Also:
        `RdbmsOperation.setDataSource(javax.sql.DataSource)`, `RdbmsOperation.setSql(java.lang.String)`

    - #### SqlUpdate

          public SqlUpdate(DataSource ds,
                   String sql)

      Constructs an update object with a given DataSource and SQL.
      Parameters:
        `ds` - DataSource to use to obtain connections
        `sql` - SQL statement to execute

    - #### SqlUpdate

          public SqlUpdate(DataSource ds,
                   String sql,
                   int[] types)

      Construct an update object with a given DataSource, SQL and anonymous parameters.
      Parameters:
        `ds` - DataSource to use to obtain connections
        `sql` - SQL statement to execute
        `types` - SQL types of the parameters, as defined in the `java.sql.Types` class
      See Also:
        `Types`

    - #### SqlUpdate

          public SqlUpdate(DataSource ds,
                   String sql,
                   int[] types,
                   int maxRowsAffected)

      Construct an update object with a given DataSource, SQL, anonymous parameters and specifying the maximum number of rows that may be affected.
      Parameters:
        `ds` - DataSource to use to obtain connections
        `sql` - SQL statement to execute
        `types` - SQL types of the parameters, as defined in the `java.sql.Types` class
        `maxRowsAffected` - the maximum number of rows that may be affected by the update
      See Also:
        `Types`

  - ### Method Detail

    - #### setMaxRowsAffected

          public void setMaxRowsAffected(int maxRowsAffected)

      Set the maximum number of rows that may be affected by this update. The default value is 0, which does not limit the number of rows affected.
      Parameters:
        `maxRowsAffected` - the maximum number of rows that can be affected by this update without this class's update method considering it an error

    - #### setRequiredRowsAffected

          public void setRequiredRowsAffected(int requiredRowsAffected)

      Set the exact number of rows that must be affected by this update. The default value is 0, which allows any number of rows to be affected.

      This is an alternative to setting the maximum number of rows that may be affected.

      Parameters:
        `requiredRowsAffected` - the exact number of rows that must be affected by this update without this class's update method considering it an error

    - #### checkRowsAffected

          protected void checkRowsAffected(int rowsAffected)
                                    throws JdbcUpdateAffectedIncorrectNumberOfRowsException

      Check the given number of affected rows against the specified maximum number or required number.
      Parameters:
        `rowsAffected` - the number of affected rows
      Throws:
        `JdbcUpdateAffectedIncorrectNumberOfRowsException` - if the actually affected rows are out of bounds
      See Also:
        `setMaxRowsAffected(int)`, `setRequiredRowsAffected(int)`

    - #### update

          public int update(Object... params)
                     throws DataAccessException

      Generic method to execute the update given parameters. All other update methods invoke this method.
      Parameters:
        `params` - array of parameters objects
      Returns:
        the number of rows affected by the update
      Throws:
        `DataAccessException`

    - #### update

          public int update(Object[] params,
                   KeyHolder generatedKeyHolder)
                     throws DataAccessException

      Method to execute the update given arguments and retrieve the generated keys using a KeyHolder.
      Parameters:
        `params` - array of parameter objects
        `generatedKeyHolder` - KeyHolder that will hold the generated keys
      Returns:
        the number of rows affected by the update
      Throws:
        `DataAccessException`

    - #### update

          public int update()
                     throws DataAccessException

      Convenience method to execute an update with no parameters.
      Throws:
        `DataAccessException`

    - #### update

          public int update(int p1)
                     throws DataAccessException

      Convenient method to execute an update given one int arg.
      Throws:
        `DataAccessException`

    - #### update

          public int update(int p1,
                   int p2)
                     throws DataAccessException

      Convenient method to execute an update given two int args.
      Throws:
        `DataAccessException`

    - #### update

          public int update(long p1)
                     throws DataAccessException

      Convenient method to execute an update given one long arg.
      Throws:
        `DataAccessException`

    - #### update

          public int update(long p1,
                   long p2)
                     throws DataAccessException

      Convenient method to execute an update given two long args.
      Throws:
        `DataAccessException`

    - #### update

          public int update(String p)
                     throws DataAccessException

      Convenient method to execute an update given one String arg.
      Throws:
        `DataAccessException`

    - #### update

          public int update(String p1,
                   String p2)
                     throws DataAccessException

      Convenient method to execute an update given two String args.
      Throws:
        `DataAccessException`

    - #### updateByNamedParam

          public int updateByNamedParam(Map<String,?> paramMap)
                                 throws DataAccessException

      Generic method to execute the update given named parameters. All other update methods invoke this method.
      Parameters:
        `paramMap` - Map of parameter name to parameter object, matching named parameters specified in the SQL statement
      Returns:
        the number of rows affected by the update
      Throws:
        `DataAccessException`

    - #### updateByNamedParam

          public int updateByNamedParam(Map<String,?> paramMap,
                               KeyHolder generatedKeyHolder)
                                 throws DataAccessException

      Method to execute the update given arguments and retrieve the generated keys using a KeyHolder.
      Parameters:
        `paramMap` - Map of parameter name to parameter object, matching named parameters specified in the SQL statement
        `generatedKeyHolder` - KeyHolder that will hold the generated keys
      Returns:
        the number of rows affected by the update
      Throws:
        `DataAccessException`