Package org.springframework.jdbc.core

Class ColumnMapRowMapper

java.lang.Object
org.springframework.jdbc.core.ColumnMapRowMapper
All Implemented Interfaces:
RowMapper<Map<String,Object>>
public class ColumnMapRowMapper extends Object implements RowMapper<Map<String,Object>>
RowMapper implementation that creates a java.util.Map for each row, representing all columns as key-value pairs: one entry for each column, with the column name as key.

The Map implementation to use and the key to use for each column in the column Map can be customized by overriding createColumnMap(int) and getColumnKey(java.lang.String), respectively.

Note: By default, ColumnMapRowMapper will try to build a linked Map with case-insensitive keys, to preserve column order as well as allow any casing to be used for column names.

Since:
1.2
Author:
Juergen Hoeller
See Also:

  • Constructor Details

    • ColumnMapRowMapper

      public ColumnMapRowMapper()

  • Method Details

    • mapRow

      public Map<String,Object> mapRow(ResultSet rs, int rowNum) throws SQLException
      Description copied from interface: RowMapper
      Implementations must implement this method to map each row of data in the ResultSet. This method should not call next() on the ResultSet; it is only supposed to map values of the current row.
      Specified by:
      mapRow in interface RowMapper<Map<String,Object>>
      Parameters:
      rs - the ResultSet to map (pre-initialized for the current row)
      rowNum - the number of the current row
      Returns:
      the result object for the current row (may be null)
      Throws:
      SQLException - if an SQLException is encountered while getting column values (that is, there's no need to catch SQLException)

    • createColumnMap

      protected Map<String,Object> createColumnMap(int columnCount)
      Create a Map instance to be used as column map.

      By default, a linked case-insensitive Map will be created.

      Parameters:
      columnCount - the column count, to be used as initial capacity for the Map
      Returns:
      the new Map instance
      See Also:

    • getColumnKey

      protected String getColumnKey(String columnName)
      Determine the key to use for the given column in the column Map.

      By default, the supplied column name will be returned unmodified.

      Parameters:
      columnName - the column name as returned by the ResultSet
      Returns:
      the column key to use
      See Also:

    • getColumnValue

      protected @Nullable Object getColumnValue(ResultSet rs, int index) throws SQLException
      Retrieve a JDBC object value for the specified column.

      The default implementation uses the getObject method. Additionally, this implementation includes a "hack" to get around Oracle returning a non-standard object for their TIMESTAMP data type.

      Parameters:
      rs - the ResultSet holding the data
      index - the column index
      Returns:
      the Object returned
      Throws:
      SQLException
      See Also: