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## org.eclipse.birt.report.engine.extension
Interface IRowMetaData

    public interface IRowMetaData

Defines a row that the extension might receive. Each column in a row comes from the evaluation of a expression. The getColumnExpression method returns such an expression.

Method Summary
`int` | `getColumnCount()` Returns the number of columns in a detail row of the result set.
`java.lang.String` | `getColumnName(int index)` Returns the column name at the specified index.
`int` | `getColumnType(int index)`

Method Detail

### getColumnCount

    int getColumnCount()

  Returns the number of columns in a detail row of the result set.

  Returns:
    the number of columns in a detail row.

### getColumnName

    java.lang.String getColumnName(int index)
                                   throws org.eclipse.birt.core.exception.BirtException

  Returns the column name at the specified index.

  Parameters:
    `index` - The projected column index.
  Returns:
    The name of the specified column.
  Throws:
    `org.eclipse.birt.data.engine.core.DataException` - if given index is invalid.
    `org.eclipse.birt.core.exception.BirtException`

### getColumnType

    int getColumnType(int index)
                      throws org.eclipse.birt.core.exception.BirtException

  Throws:
    `org.eclipse.birt.core.exception.BirtException`

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