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

    java.lang.Object
      org.springframework.jdbc.core.namedparam.AbstractSqlParameterSource
          org.springframework.jdbc.core.namedparam.MapSqlParameterSource

All Implemented Interfaces:
  SqlParameterSource

    public class MapSqlParameterSource

extends AbstractSqlParameterSource

`SqlParameterSource` implementation that holds a given Map of parameters.

This class is intended for passing in a simple Map of parameter values to the methods of the `NamedParameterJdbcTemplate` class.

The `addValue` methods on this class will make adding several values easier. The methods return a reference to the `MapSqlParameterSource` itself, so you can chain several method calls together within a single statement.

Since:
  2.0
Author:
  Thomas Risberg, Juergen Hoeller
See Also:
  `addValue(String, Object)`, `addValue(String, Object, int)`, `AbstractSqlParameterSource.registerSqlType(java.lang.String, int)`, `NamedParameterJdbcTemplate`

Field Summary

Fields inherited from interface org.springframework.jdbc.core.namedparam.SqlParameterSource
`TYPE_UNKNOWN`

Constructor Summary
`MapSqlParameterSource()` Create an empty MapSqlParameterSource, with values to be added via `addValue`.
`MapSqlParameterSource(Map values)` Create a new MapSqlParameterSource based on a Map.
`MapSqlParameterSource(String paramName, Object value)` Create a new MapSqlParameterSource, with one value comprised of the supplied arguments.

Method Summary
`MapSqlParameterSource` | `addValue(String paramName, Object value)` Add a parameter to this parameter source.
`MapSqlParameterSource` | `addValue(String paramName, Object value, int sqlType)` Add a parameter to this parameter source.
`MapSqlParameterSource` | `addValues(Map values)` Add a Map of parameters to this parameter source.
`Object` | `getValue(String paramName)` Return the parameter value for the requested named parameter.
`Map` | `getValues()` Expose the current parameter values as read-only Map.
`boolean` | `hasValue(String paramName)` Determine whether there is a value for the specified named parameter.

Methods inherited from class org.springframework.jdbc.core.namedparam.AbstractSqlParameterSource
`getSqlType, registerSqlType`

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

Constructor Detail

### MapSqlParameterSource

    public MapSqlParameterSource()

  Create an empty MapSqlParameterSource, with values to be added via `addValue`.

  See Also:
    `addValue(String, Object)`

### MapSqlParameterSource

    public MapSqlParameterSource(String paramName,
                                 Object value)

  Create a new MapSqlParameterSource, with one value comprised of the supplied arguments.

  Parameters:
    `paramName` - the name of the parameter
    `value` - the value of the parameter
  See Also:
    `addValue(String, Object)`

### MapSqlParameterSource

    public MapSqlParameterSource(Map values)

  Create a new MapSqlParameterSource based on a Map.

  Parameters:
    `values` - a Map holding existing parameter values (can be `null`)

Method Detail

### addValue

    public MapSqlParameterSource addValue(String paramName,
                                          Object value)

  Add a parameter to this parameter source.

  Parameters:
    `paramName` - the name of the parameter
    `value` - the value of the parameter
  Returns:
    a reference to this parameter source, so it's possible to chain several calls together

### addValue

    public MapSqlParameterSource addValue(String paramName,
                                          Object value,
                                          int sqlType)

  Add a parameter to this parameter source.

  Parameters:
    `paramName` - the name of the parameter
    `value` - the value of the parameter
    `sqlType` - the SQL type of the parameter
  Returns:
    a reference to this parameter source, so it's possible to chain several calls together

### addValues

    public MapSqlParameterSource addValues(Map values)

  Add a Map of parameters to this parameter source.

  Parameters:
    `values` - a Map holding existing parameter values (can be `null`)
  Returns:
    a reference to this parameter source, so it's possible to chain several calls together

### getValues

    public Map getValues()

  Expose the current parameter values as read-only Map.

### hasValue

    public boolean hasValue(String paramName)

  Description copied from interface: `SqlParameterSource`
  Determine whether there is a value for the specified named parameter.

  Parameters:
    `paramName` - the name of the parameter
  Returns:
    whether there is a value defined

### getValue

    public Object getValue(String paramName)

  Description copied from interface: `SqlParameterSource`
  Return the parameter value for the requested named parameter.

  Parameters:
    `paramName` - the name of the parameter
  Returns:
    the value of the specified parameter

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