Module java.sql
Package javax.sql

## Interface RowSetMetaData

- All Superinterfaces:
    `ResultSetMetaData`, `Wrapper`
  All Known Implementing Classes:
    `RowSetMetaDataImpl`

      public interface RowSetMetaData
      extends ResultSetMetaData

  An object that contains information about the columns in a `RowSet` object. This interface is an extension of the `ResultSetMetaData` interface with methods for setting the values in a `RowSetMetaData` object. When a `RowSetReader` object reads data into a `RowSet` object, it creates a `RowSetMetaData` object and initializes it using the methods in the `RowSetMetaData` interface. Then the reader passes the `RowSetMetaData` object to the rowset.

  The methods in this interface are invoked internally when an application calls the method `RowSet.execute`; an application programmer would not use them directly.

  Since:
    1.4

- - ### Field Summary

    - ### Fields declared in interface java.sql.ResultSetMetaData

      `columnNoNulls, columnNullable, columnNullableUnknown`

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `setAutoIncrement​(int columnIndex, boolean property)` | Sets whether the designated column is automatically numbered, The default is for a `RowSet` object's columns not to be automatically numbered.
    `void` | `setCaseSensitive​(int columnIndex, boolean property)` | Sets whether the designated column is case sensitive.
    `void` | `setCatalogName​(int columnIndex, String catalogName)` | Sets the designated column's table's catalog name, if any, to the given `String`.
    `void` | `setColumnCount​(int columnCount)` | Sets the number of columns in the `RowSet` object to the given number.
    `void` | `setColumnDisplaySize​(int columnIndex, int size)` | Sets the designated column's normal maximum width in chars to the given `int`.
    `void` | `setColumnLabel​(int columnIndex, String label)` | Sets the suggested column title for use in printouts and displays, if any, to the given `String`.
    `void` | `setColumnName​(int columnIndex, String columnName)` | Sets the name of the designated column to the given `String`.
    `void` | `setColumnType​(int columnIndex, int SQLType)` | Sets the designated column's SQL type to the one given.
    `void` | `setColumnTypeName​(int columnIndex, String typeName)` | Sets the designated column's type name that is specific to the data source, if any, to the given `String`.
    `void` | `setCurrency​(int columnIndex, boolean property)` | Sets whether the designated column is a cash value.
    `void` | `setNullable​(int columnIndex, int property)` | Sets whether the designated column's value can be set to `NULL`.
    `void` | `setPrecision​(int columnIndex, int precision)` | Sets the designated column's number of decimal digits to the given `int`.
    `void` | `setScale​(int columnIndex, int scale)` | Sets the designated column's number of digits to the right of the decimal point to the given `int`.
    `void` | `setSchemaName​(int columnIndex, String schemaName)` | Sets the name of the designated column's table's schema, if any, to the given `String`.
    `void` | `setSearchable​(int columnIndex, boolean property)` | Sets whether the designated column can be used in a where clause.
    `void` | `setSigned​(int columnIndex, boolean property)` | Sets whether the designated column is a signed number.
    `void` | `setTableName​(int columnIndex, String tableName)` | Sets the designated column's table name, if any, to the given `String`.

    - ### Methods declared in interface java.sql.ResultSetMetaData

      `getCatalogName, getColumnClassName, getColumnCount, getColumnDisplaySize, getColumnLabel, getColumnName, getColumnType, getColumnTypeName, getPrecision, getScale, getSchemaName, getTableName, isAutoIncrement, isCaseSensitive, isCurrency, isDefinitelyWritable, isNullable, isReadOnly, isSearchable, isSigned, isWritable`

    - ### Methods declared in interface java.sql.Wrapper

      `isWrapperFor, unwrap`

- - ### Method Detail

    - #### setColumnCount

          void setColumnCount​(int columnCount)
                       throws SQLException

      Sets the number of columns in the `RowSet` object to the given number.
      Parameters:
        `columnCount` - the number of columns in the `RowSet` object
      Throws:
        `SQLException` - if a database access error occurs

    - #### setAutoIncrement

          void setAutoIncrement​(int columnIndex,
                                boolean property)
                         throws SQLException

      Sets whether the designated column is automatically numbered, The default is for a `RowSet` object's columns not to be automatically numbered.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - `true` if the column is automatically numbered; `false` if it is not
      Throws:
        `SQLException` - if a database access error occurs

    - #### setCaseSensitive

          void setCaseSensitive​(int columnIndex,
                                boolean property)
                         throws SQLException

      Sets whether the designated column is case sensitive. The default is `false`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - `true` if the column is case sensitive; `false` if it is not
      Throws:
        `SQLException` - if a database access error occurs

    - #### setSearchable

          void setSearchable​(int columnIndex,
                             boolean property)
                      throws SQLException

      Sets whether the designated column can be used in a where clause. The default is `false`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - `true` if the column can be used in a `WHERE` clause; `false` if it cannot
      Throws:
        `SQLException` - if a database access error occurs

    - #### setCurrency

          void setCurrency​(int columnIndex,
                           boolean property)
                    throws SQLException

      Sets whether the designated column is a cash value. The default is `false`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - `true` if the column is a cash value; `false` if it is not
      Throws:
        `SQLException` - if a database access error occurs

    - #### setNullable

          void setNullable​(int columnIndex,
                           int property)
                    throws SQLException

      Sets whether the designated column's value can be set to `NULL`. The default is `ResultSetMetaData.columnNullableUnknown`
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - one of the following constants: `ResultSetMetaData.columnNoNulls`, `ResultSetMetaData.columnNullable`, or `ResultSetMetaData.columnNullableUnknown`
      Throws:
        `SQLException` - if a database access error occurs

    - #### setSigned

          void setSigned​(int columnIndex,
                         boolean property)
                  throws SQLException

      Sets whether the designated column is a signed number. The default is `false`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `property` - `true` if the column is a signed number; `false` if it is not
      Throws:
        `SQLException` - if a database access error occurs

    - #### setColumnDisplaySize

          void setColumnDisplaySize​(int columnIndex,
                                    int size)
                             throws SQLException

      Sets the designated column's normal maximum width in chars to the given `int`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `size` - the normal maximum number of characters for the designated column
      Throws:
        `SQLException` - if a database access error occurs

    - #### setColumnLabel

          void setColumnLabel​(int columnIndex,
                              String label)
                       throws SQLException

      Sets the suggested column title for use in printouts and displays, if any, to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `label` - the column title
      Throws:
        `SQLException` - if a database access error occurs

    - #### setColumnName

          void setColumnName​(int columnIndex,
                             String columnName)
                      throws SQLException

      Sets the name of the designated column to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `columnName` - the designated column's name
      Throws:
        `SQLException` - if a database access error occurs

    - #### setSchemaName

          void setSchemaName​(int columnIndex,
                             String schemaName)
                      throws SQLException

      Sets the name of the designated column's table's schema, if any, to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `schemaName` - the schema name
      Throws:
        `SQLException` - if a database access error occurs

    - #### setPrecision

          void setPrecision​(int columnIndex,
                            int precision)
                     throws SQLException

      Sets the designated column's number of decimal digits to the given `int`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `precision` - the total number of decimal digits
      Throws:
        `SQLException` - if a database access error occurs

    - #### setScale

          void setScale​(int columnIndex,
                        int scale)
                 throws SQLException

      Sets the designated column's number of digits to the right of the decimal point to the given `int`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `scale` - the number of digits to right of decimal point
      Throws:
        `SQLException` - if a database access error occurs

    - #### setTableName

          void setTableName​(int columnIndex,
                            String tableName)
                     throws SQLException

      Sets the designated column's table name, if any, to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `tableName` - the column's table name
      Throws:
        `SQLException` - if a database access error occurs

    - #### setCatalogName

          void setCatalogName​(int columnIndex,
                              String catalogName)
                       throws SQLException

      Sets the designated column's table's catalog name, if any, to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `catalogName` - the column's catalog name
      Throws:
        `SQLException` - if a database access error occurs

    - #### setColumnType

          void setColumnType​(int columnIndex,
                             int SQLType)
                      throws SQLException

      Sets the designated column's SQL type to the one given.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `SQLType` - the column's SQL type
      Throws:
        `SQLException` - if a database access error occurs
      See Also:
        `Types`

    - #### setColumnTypeName

          void setColumnTypeName​(int columnIndex,
                                 String typeName)
                          throws SQLException

      Sets the designated column's type name that is specific to the data source, if any, to the given `String`.
      Parameters:
        `columnIndex` - the first column is 1, the second is 2, ...
        `typeName` - data source specific type name.
      Throws:
        `SQLException` - if a database access error occurs