## org.springframework.jdbc.core.namedparam
Class NamedParameterJdbcTemplate

    java.lang.Object
      org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate

All Implemented Interfaces:
  NamedParameterJdbcOperations

    public class NamedParameterJdbcTemplate

extends Object
implements NamedParameterJdbcOperations

Template class with a basic set of JDBC operations, allowing the use of named parameters rather than traditional '?' placeholders.

This class delegates to a wrapped `JdbcTemplate` once the substitution from named parameters to JDBC style '?' placeholders is done at execution time. It also allows for expanding a `List` of values to the appropriate number of placeholders.

The underlying `JdbcTemplate` is exposed to allow for convenient access to the traditional `JdbcTemplate` methods.

Since:
  2.0
Author:
  Thomas Risberg, Juergen Hoeller
See Also:
  `NamedParameterJdbcOperations`, `JdbcTemplate`

Field Summary
`static int` `DEFAULT_CACHE_LIMIT` Default maximum number of entries for this template's SQL cache: 256

Constructor Summary
`NamedParameterJdbcTemplate(DataSource dataSource)` Create a new NamedParameterJdbcTemplate for the given `DataSource`.
`NamedParameterJdbcTemplate(JdbcOperations classicJdbcTemplate)` Create a new NamedParameterJdbcTemplate for the given classic Spring `JdbcTemplate`.

Method Summary
`int[]` `batchUpdate(String sql, Map<String,?>[] batchValues)` Executes a batch using the supplied SQL statement with the batch of supplied arguments.
`int[]` `batchUpdate(String sql, SqlParameterSource[] batchArgs)` Execute a batch using the supplied SQL statement with the batch of supplied arguments.

`

`<T> T`

`

`execute(String sql, Map<String,?> paramMap, PreparedStatementCallback<T> action)`
Execute a JDBC data access operation, implemented as callback action working on a JDBC PreparedStatement.

`

`<T> T`

`

`execute(String sql, SqlParameterSource paramSource, PreparedStatementCallback<T> action)`
Execute a JDBC data access operation, implemented as callback action working on a JDBC PreparedStatement.

`int` `getCacheLimit()` Return the maximum number of entries for this template's SQL cache.
`JdbcOperations` `getJdbcOperations()` Expose the classic Spring JdbcTemplate to allow invocation of less commonly used methods.
`protected ParsedSql` `getParsedSql(String sql)` Obtain a parsed representation of the given SQL statement.
`protected PreparedStatementCreator` `getPreparedStatementCreator(String sql, SqlParameterSource paramSource)` Build a PreparedStatementCreator based on the given SQL and named parameters.

`

`<T> T`

`

`query(String sql, Map<String,?> paramMap, ResultSetExtractor<T> rse)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet with a ResultSetExtractor.

`void` `query(String sql, Map<String,?> paramMap, RowCallbackHandler rch)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet on a per-row basis with a RowCallbackHandler.

`

`<T> List<T>`

`

`query(String sql, Map<String,?> paramMap, RowMapper<T> rowMapper)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping each row to a Java object via a RowMapper.

`

`<T> T`

`

`query(String sql, SqlParameterSource paramSource, ResultSetExtractor<T> rse)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet with a ResultSetExtractor.

`void` `query(String sql, SqlParameterSource paramSource, RowCallbackHandler rch)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet on a per-row basis with a RowCallbackHandler.

`

`<T> List<T>`

`

`query(String sql, SqlParameterSource paramSource, RowMapper<T> rowMapper)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping each row to a Java object via a RowMapper.

`int` `queryForInt(String sql, Map<String,?> paramMap)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in an int value.
`int` `queryForInt(String sql, SqlParameterSource paramSource)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in an int value.
`List<Map<String,Object>>` `queryForList(String sql, Map<String,?> paramMap)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

`

`<T> List<T>`

`

`queryForList(String sql, Map<String,?> paramMap, Class<T> elementType)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

`List<Map<String,Object>>` `queryForList(String sql, SqlParameterSource paramSource)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

`

`<T> List<T>`

`

`queryForList(String sql, SqlParameterSource paramSource, Class<T> elementType)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

`long` `queryForLong(String sql, Map<String,?> paramMap)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in a long value.
`long` `queryForLong(String sql, SqlParameterSource paramSource)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in a long value.
`Map<String,Object>` `queryForMap(String sql, Map<String,?> paramMap)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result Map.
`Map<String,Object>` `queryForMap(String sql, SqlParameterSource paramSource)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result Map.

`

`<T> T`

`

`queryForObject(String sql, Map<String,?> paramMap, Class<T> requiredType)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result object.

`

`<T> T`

`

`queryForObject(String sql, Map<String,?> paramMap, RowMapper<T> rowMapper)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping a single result row to a Java object via a RowMapper.

`

`<T> T`

`

`queryForObject(String sql, SqlParameterSource paramSource, Class<T> requiredType)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result object.

`

`<T> T`

`

`queryForObject(String sql, SqlParameterSource paramSource, RowMapper<T> rowMapper)`
Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping a single result row to a Java object via a RowMapper.

`SqlRowSet` `queryForRowSet(String sql, Map<String,?> paramMap)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a SqlRowSet.
`SqlRowSet` `queryForRowSet(String sql, SqlParameterSource paramSource)` Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a SqlRowSet.
`void` `setCacheLimit(int cacheLimit)` Specify the maximum number of entries for this template's SQL cache.
`int` `update(String sql, Map<String,?> paramMap)` Issue an update via a prepared statement, binding the given arguments.
`int` `update(String sql, SqlParameterSource paramSource)` Issue an update via a prepared statement, binding the given arguments.
`int` `update(String sql, SqlParameterSource paramSource, KeyHolder generatedKeyHolder)` Issue an update via a prepared statement, binding the given arguments, returning generated keys.
`int` `update(String sql, SqlParameterSource paramSource, KeyHolder generatedKeyHolder, String[] keyColumnNames)` Issue an update via a prepared statement, binding the given arguments, returning generated keys.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### DEFAULT_CACHE_LIMIT

    public static final int DEFAULT_CACHE_LIMIT

  Default maximum number of entries for this template's SQL cache: 256

  See Also:
    Constant Field Values

Constructor Detail

### NamedParameterJdbcTemplate

    public NamedParameterJdbcTemplate(DataSource dataSource)

  Create a new NamedParameterJdbcTemplate for the given `DataSource`.

  Creates a classic Spring `JdbcTemplate` and wraps it.

  Parameters:
    `dataSource` - the JDBC DataSource to access

### NamedParameterJdbcTemplate

    public NamedParameterJdbcTemplate(JdbcOperations classicJdbcTemplate)

  Create a new NamedParameterJdbcTemplate for the given classic Spring `JdbcTemplate`.

  Parameters:
    `classicJdbcTemplate` - the classic Spring JdbcTemplate to wrap

Method Detail

### getJdbcOperations

    public JdbcOperations getJdbcOperations()

  Expose the classic Spring JdbcTemplate to allow invocation of less commonly used methods.

  Specified by:
    `getJdbcOperations` in interface `NamedParameterJdbcOperations`

### setCacheLimit

    public void setCacheLimit(int cacheLimit)

  Specify the maximum number of entries for this template's SQL cache. Default is 256.

### getCacheLimit

    public int getCacheLimit()

  Return the maximum number of entries for this template's SQL cache.

### execute

    public <T> T execute(String sql,
                         SqlParameterSource paramSource,
                         PreparedStatementCallback<T> action)
              throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Execute a JDBC data access operation, implemented as callback action working on a JDBC PreparedStatement. This allows for implementing arbitrary data access operations on a single Statement, within Spring's managed JDBC environment: that is, participating in Spring-managed transactions and converting JDBC SQLExceptions into Spring's DataAccessException hierarchy.

  The callback action can return a result object, for example a domain object or a collection of domain objects.

  Specified by:
    `execute` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL to execute
    `paramSource` - container of arguments to bind to the query
    `action` - callback object that specifies the action
  Returns:
    a result object returned by the action, or `null`
  Throws:
    `DataAccessException` - if there is any problem

### execute

    public <T> T execute(String sql,
                         Map<String,?> paramMap,
                         PreparedStatementCallback<T> action)
              throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Execute a JDBC data access operation, implemented as callback action working on a JDBC PreparedStatement. This allows for implementing arbitrary data access operations on a single Statement, within Spring's managed JDBC environment: that is, participating in Spring-managed transactions and converting JDBC SQLExceptions into Spring's DataAccessException hierarchy.

  The callback action can return a result object, for example a domain object or a collection of domain objects.

  Specified by:
    `execute` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `action` - callback object that specifies the action
  Returns:
    a result object returned by the action, or `null`
  Throws:
    `DataAccessException` - if there is any problem

### query

    public <T> T query(String sql,
                       SqlParameterSource paramSource,
                       ResultSetExtractor<T> rse)
            throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet with a ResultSetExtractor.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `rse` - object that will extract results
  Returns:
    an arbitrary result object, as returned by the ResultSetExtractor
  Throws:
    `DataAccessException` - if the query fails

### query

    public <T> T query(String sql,
                       Map<String,?> paramMap,
                       ResultSetExtractor<T> rse)
            throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet with a ResultSetExtractor.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `rse` - object that will extract results
  Returns:
    an arbitrary result object, as returned by the ResultSetExtractor
  Throws:
    `DataAccessException` - if the query fails

### query

    public void query(String sql,
                      SqlParameterSource paramSource,
                      RowCallbackHandler rch)
               throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet on a per-row basis with a RowCallbackHandler.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `rch` - object that will extract results, one row at a time
  Throws:
    `DataAccessException` - if the query fails

### query

    public void query(String sql,
                      Map<String,?> paramMap,
                      RowCallbackHandler rch)
               throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, reading the ResultSet on a per-row basis with a RowCallbackHandler.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `rch` - object that will extract results, one row at a time
  Throws:
    `DataAccessException` - if the query fails

### query

    public <T> List<T> query(String sql,
                             SqlParameterSource paramSource,
                             RowMapper<T> rowMapper)
                  throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping each row to a Java object via a RowMapper.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `rowMapper` - object that will map one object per row
  Returns:
    the result List, containing mapped objects
  Throws:
    `DataAccessException` - if the query fails

### query

    public <T> List<T> query(String sql,
                             Map<String,?> paramMap,
                             RowMapper<T> rowMapper)
                  throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping each row to a Java object via a RowMapper.

  Specified by:
    `query` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `rowMapper` - object that will map one object per row
  Returns:
    the result List, containing mapped objects
  Throws:
    `DataAccessException` - if the query fails

### queryForObject

    public <T> T queryForObject(String sql,
                                SqlParameterSource paramSource,
                                RowMapper<T> rowMapper)
                     throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping a single result row to a Java object via a RowMapper.

  Specified by:
    `queryForObject` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `rowMapper` - object that will map one object per row
  Returns:
    the single mapped object
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails

### queryForObject

    public <T> T queryForObject(String sql,
                                Map<String,?> paramMap,
                                RowMapper<T> rowMapper)
                     throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, mapping a single result row to a Java object via a RowMapper.

  Specified by:
    `queryForObject` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `rowMapper` - object that will map one object per row
  Returns:
    the single mapped object
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails

### queryForObject

    public <T> T queryForObject(String sql,
                                SqlParameterSource paramSource,
                                Class<T> requiredType)
                     throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result object.

  The query is expected to be a single row/single column query; the returned result will be directly mapped to the corresponding object type.

  Specified by:
    `queryForObject` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `requiredType` - the type that the result object is expected to match
  Returns:
    the result object of the required type, or `null` in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForObject(String, Class)`

### queryForObject

    public <T> T queryForObject(String sql,
                                Map<String,?> paramMap,
                                Class<T> requiredType)
                     throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result object.

  The query is expected to be a single row/single column query; the returned result will be directly mapped to the corresponding object type.

  Specified by:
    `queryForObject` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `requiredType` - the type that the result object is expected to match
  Returns:
    the result object of the required type, or `null` in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForObject(String, Class)`

### queryForMap

    public Map<String,Object> queryForMap(String sql,
                                          SqlParameterSource paramSource)
                                   throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result Map.

  The query is expected to be a single row query; the result row will be mapped to a Map (one entry for each column, using the column name as the key).

  Specified by:
    `queryForMap` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
  Returns:
    the result Map (one entry for each column, using the column name as the key)
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForMap(String)`, `ColumnMapRowMapper`

### queryForMap

    public Map<String,Object> queryForMap(String sql,
                                          Map<String,?> paramMap)
                                   throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result Map. The queryForMap() methods defined by this interface are appropriate when you don't have a domain model. Otherwise, consider using one of the queryForObject() methods.

  The query is expected to be a single row query; the result row will be mapped to a Map (one entry for each column, using the column name as the key).

  Specified by:
    `queryForMap` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    the result Map (one entry for each column, using the column name as the key)
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForMap(String)`, `ColumnMapRowMapper`

### queryForLong

    public long queryForLong(String sql,
                             SqlParameterSource paramSource)
                      throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in a long value.

  The query is expected to be a single row/single column query that results in a long value.

  Specified by:
    `queryForLong` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
  Returns:
    the long value, or 0 in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForLong(String)`

### queryForLong

    public long queryForLong(String sql,
                             Map<String,?> paramMap)
                      throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in a long value.

  The query is expected to be a single row/single column query that results in a long value.

  Specified by:
    `queryForLong` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    the long value, or 0 in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForLong(String)`

### queryForInt

    public int queryForInt(String sql,
                           SqlParameterSource paramSource)
                    throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in an int value.

  The query is expected to be a single row/single column query that results in an int value.

  Specified by:
    `queryForInt` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
  Returns:
    the int value, or 0 in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForInt(String)`

### queryForInt

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

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, resulting in an int value.

  The query is expected to be a single row/single column query that results in an int value.

  Specified by:
    `queryForInt` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    the int value, or 0 in case of SQL NULL
  Throws:
    `IncorrectResultSizeDataAccessException` - if the query does not return exactly one row, or does not return exactly one column in that row
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForInt(String)`

### queryForList

    public <T> List<T> queryForList(String sql,
                                    SqlParameterSource paramSource,
                                    Class<T> elementType)
                         throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

  The results will be mapped to a List (one entry for each row) of result objects, each of them matching the specified element type.

  Specified by:
    `queryForList` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
    `elementType` - the required type of element in the result list (for example, `Integer.class`)
  Returns:
    a List of objects that match the specified element type
  Throws:
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForList(String, Class)`, `SingleColumnRowMapper`

### queryForList

    public <T> List<T> queryForList(String sql,
                                    Map<String,?> paramMap,
                                    Class<T> elementType)
                         throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

  The results will be mapped to a List (one entry for each row) of result objects, each of them matching the specified element type.

  Specified by:
    `queryForList` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
    `elementType` - the required type of element in the result list (for example, `Integer.class`)
  Returns:
    a List of objects that match the specified element type
  Throws:
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForList(String, Class)`, `SingleColumnRowMapper`

### queryForList

    public List<Map<String,Object>> queryForList(String sql,
                                                 SqlParameterSource paramSource)
                                          throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

  The results will be mapped to a List (one entry for each row) of Maps (one entry for each column, using the column name as the key). Thus Each element in the list will be of the form returned by this interface's queryForMap() methods.

  Specified by:
    `queryForList` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
  Returns:
    a List that contains a Map per row
  Throws:
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForList(String)`

### queryForList

    public List<Map<String,Object>> queryForList(String sql,
                                                 Map<String,?> paramMap)
                                          throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a result list.

  The results will be mapped to a List (one entry for each row) of Maps (one entry for each column, using the column name as the key). Each element in the list will be of the form returned by this interface's queryForMap() methods.

  Specified by:
    `queryForList` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    a List that contains a Map per row
  Throws:
    `DataAccessException` - if the query fails
  See Also:
    `JdbcTemplate.queryForList(String)`

### queryForRowSet

    public SqlRowSet queryForRowSet(String sql,
                                    SqlParameterSource paramSource)
                             throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a SqlRowSet.

  The results will be mapped to an SqlRowSet which holds the data in a disconnected fashion. This wrapper will translate any SQLExceptions thrown.

  Note that that, for the default implementation, JDBC RowSet support needs to be available at runtime: by default, Sun's `com.sun.rowset.CachedRowSetImpl` class is used, which is part of JDK 1.5+ and also available separately as part of Sun's JDBC RowSet Implementations download (rowset.jar).

  Specified by:
    `queryForRowSet` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramSource` - container of arguments to bind to the query
  Returns:
    a SqlRowSet representation (possibly a wrapper around a `javax.sql.rowset.CachedRowSet`)
  Throws:
    `DataAccessException` - if there is any problem executing the query
  See Also:
    `JdbcTemplate.queryForRowSet(String)`, `SqlRowSetResultSetExtractor`, `CachedRowSet`

### queryForRowSet

    public SqlRowSet queryForRowSet(String sql,
                                    Map<String,?> paramMap)
                             throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Query given SQL to create a prepared statement from SQL and a list of arguments to bind to the query, expecting a SqlRowSet.

  The results will be mapped to an SqlRowSet which holds the data in a disconnected fashion. This wrapper will translate any SQLExceptions thrown.

  Note that that, for the default implementation, JDBC RowSet support needs to be available at runtime: by default, Sun's `com.sun.rowset.CachedRowSetImpl` class is used, which is part of JDK 1.5+ and also available separately as part of Sun's JDBC RowSet Implementations download (rowset.jar).

  Specified by:
    `queryForRowSet` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL query to execute
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    a SqlRowSet representation (possibly a wrapper around a `javax.sql.rowset.CachedRowSet`)
  Throws:
    `DataAccessException` - if there is any problem executing the query
  See Also:
    `JdbcTemplate.queryForRowSet(String)`, `SqlRowSetResultSetExtractor`, `CachedRowSet`

### update

    public int update(String sql,
                      SqlParameterSource paramSource)
               throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Issue an update via a prepared statement, binding the given arguments.

  Specified by:
    `update` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL containing named parameters
    `paramSource` - container of arguments and SQL types to bind to the query
  Returns:
    the number of rows affected
  Throws:
    `DataAccessException` - if there is any problem issuing the update

### update

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

  Description copied from interface: `NamedParameterJdbcOperations`
  Issue an update via a prepared statement, binding the given arguments.

  Specified by:
    `update` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL containing named parameters
    `paramMap` - map of parameters to bind to the query (leaving it to the PreparedStatement to guess the corresponding SQL type)
  Returns:
    the number of rows affected
  Throws:
    `DataAccessException` - if there is any problem issuing the update

### update

    public int update(String sql,
                      SqlParameterSource paramSource,
                      KeyHolder generatedKeyHolder)
               throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Issue an update via a prepared statement, binding the given arguments, returning generated keys.

  Specified by:
    `update` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL containing named parameters
    `paramSource` - container of arguments and SQL types to bind to the query
    `generatedKeyHolder` - KeyHolder that will hold the generated keys
  Returns:
    the number of rows affected
  Throws:
    `DataAccessException` - if there is any problem issuing the update
  See Also:
    `MapSqlParameterSource`, `GeneratedKeyHolder`

### update

    public int update(String sql,
                      SqlParameterSource paramSource,
                      KeyHolder generatedKeyHolder,
                      String[] keyColumnNames)
               throws DataAccessException

  Description copied from interface: `NamedParameterJdbcOperations`
  Issue an update via a prepared statement, binding the given arguments, returning generated keys.

  Specified by:
    `update` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - SQL containing named parameters
    `paramSource` - container of arguments and SQL types to bind to the query
    `generatedKeyHolder` - KeyHolder that will hold the generated keys
    `keyColumnNames` - names of the columns that will have keys generated for them
  Returns:
    the number of rows affected
  Throws:
    `DataAccessException` - if there is any problem issuing the update
  See Also:
    `MapSqlParameterSource`, `GeneratedKeyHolder`

### batchUpdate

    public int[] batchUpdate(String sql,
                             Map<String,?>[] batchValues)

  Description copied from interface: `NamedParameterJdbcOperations`
  Executes a batch using the supplied SQL statement with the batch of supplied arguments.

  Specified by:
    `batchUpdate` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - the SQL statement to execute
    `batchValues` - the array of Maps containing the batch of arguments for the query
  Returns:
    an array containing the numbers of rows affected by each update in the batch

### batchUpdate

    public int[] batchUpdate(String sql,
                             SqlParameterSource[] batchArgs)

  Description copied from interface: `NamedParameterJdbcOperations`
  Execute a batch using the supplied SQL statement with the batch of supplied arguments.

  Specified by:
    `batchUpdate` in interface `NamedParameterJdbcOperations`
  Parameters:
    `sql` - the SQL statement to execute
    `batchArgs` - the array of `SqlParameterSource` containing the batch of arguments for the query
  Returns:
    an array containing the numbers of rows affected by each update in the batch

### getPreparedStatementCreator

    protected PreparedStatementCreator getPreparedStatementCreator(String sql,
                                                                   SqlParameterSource paramSource)

  Build a PreparedStatementCreator based on the given SQL and named parameters.

  Note: Not used for the `update` variant with generated key handling.

  Parameters:
    `sql` - SQL to execute
    `paramSource` - container of arguments to bind
  Returns:
    the corresponding PreparedStatementCreator

### getParsedSql

    protected ParsedSql getParsedSql(String sql)

  Obtain a parsed representation of the given SQL statement.

  The default implementation uses an LRU cache with an upper limit of 256 entries.

  Parameters:
    `sql` - the original SQL
  Returns:
    a representation of the parsed SQL statement