org.eigenbase.reltype
Interface RelDataTypeFactory.FieldInfo

All Known Implementing Classes:

RelDataTypeFactory.ListFieldInfo

Enclosing interface:

RelDataTypeFactory

public static interface RelDataTypeFactory.FieldInfo

Callback which provides enough information to create fields.

Method Summary

int	getFieldCount() Returns the number of fields.
String	getFieldName(int index) Returns the name of a given field.
RelDataType	getFieldType(int index) Returns the type of a given field.

Method Detail

getFieldCount

int getFieldCount()

Returns the number of fields.

Returns:

number of fields

getFieldName

String getFieldName(int index)

Returns the name of a given field.

Parameters:

index - Ordinal of field

Returns:

Name of given field

getFieldType

RelDataType getFieldType(int index)

Returns the type of a given field.

Parameters:

index - Ordinal of field

Returns:

Type of given field