Column (DataNucleus Core 4.0.8-SNAPSHOT API)

All Known Implementing Classes:

ColumnImpl
```
public interface Column
```
Interface representing a column in a table.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`ColumnMetaData`	`getColumnMetaData()` Accessor for the metadata for this column (if any).
`ColumnType`	`getColumnType()` Accessor for the role that this column serves (if known).
`Object`	`getDefaultValue()` Accessor for the default Value
`JdbcType`	`getJdbcType()` Accessor for the JDBC Type used for this column.
`MemberColumnMapping`	`getMemberColumnMapping()` Accessor for the mapping (and hence member) that owns this column.
`String`	`getName()` Accessor for the column name.
`int`	`getPosition()` Accessor for the position of this column in the table (if specified).
`Table`	`getTable()` Accessor for the table for this column.
`String`	`getTypeName()` Accessor for the native type name in the datastore for this column.
`boolean`	`isDefaultable()` Accessor for whether the column is defaultable.
`boolean`	`isNullable()` Accessor for whether the column is nullable in the datastore.
`boolean`	`isPrimaryKey()` Whether this column is (part of) the primary key
`boolean`	`isUnique()` Accessor for whether the column is unique.
`Column`	`setColumnMetaData(ColumnMetaData md)`
`Column`	`setDefaultable(Object defaultValue)` Mutator for the defaultability of the column.
`Column`	`setJdbcType(JdbcType jdbcType)`
`Column`	`setNullable(boolean nullable)` Mutator for the nullability of the column.
`Column`	`setPosition(int pos)`
`Column`	`setPrimaryKey()` Mutator to make the column (part of) the primary key.
`Column`	`setTypeName(String type)`
`Column`	`setUnique(boolean unique)` Mutator for the uniqueness of the column.

- Method Detail
  - getName
```
String getName()
```
    Accessor for the column name.
    
    Returns:
    
    Name of column
  - getTable
```
Table getTable()
```
    Accessor for the table for this column.
    
    Returns:
    
    The table
  - getMemberColumnMapping
```
MemberColumnMapping getMemberColumnMapping()
```
    Accessor for the mapping (and hence member) that owns this column.
    
    Returns:
    
    The associated mapping (or null if this is a surrogate column)
  - isPrimaryKey
```
boolean isPrimaryKey()
```
    Whether this column is (part of) the primary key
    
    Returns:
    
    Whether part of the PK
  - setPrimaryKey
```
Column setPrimaryKey()
```
    Mutator to make the column (part of) the primary key.
    
    Returns:
    
    TODO
  - setNullable
```
Column setNullable(boolean nullable)
```
    Mutator for the nullability of the column.
    
    Parameters:
    
    nullable - Whether this is nullable
    
    Returns:
    
    The column with the updated info
  - isNullable
```
boolean isNullable()
```
    Accessor for whether the column is nullable in the datastore.
    
    Returns:
    
    whether the column is nullable
  - setDefaultable
```
Column setDefaultable(Object defaultValue)
```
    Mutator for the defaultability of the column.
    
    Parameters:
    
    defaultValue - The default to use
    
    Returns:
    
    The column with the updated info
  - isDefaultable
```
boolean isDefaultable()
```
    Accessor for whether the column is defaultable.
    
    Returns:
    
    whether the column is defaultable
  - getDefaultValue
```
Object getDefaultValue()
```
    Accessor for the default Value
    
    Returns:
    
    the default value
  - setUnique
```
Column setUnique(boolean unique)
```
    Mutator for the uniqueness of the column.
    
    Parameters:
    
    unique - The flag
    
    Returns:
    
    The column with the updated info
  - isUnique
```
boolean isUnique()
```
    Accessor for whether the column is unique.
    
    Returns:
    
    whether the column is unique
  - getColumnType
```
ColumnType getColumnType()
```
    Accessor for the role that this column serves (if known).
    
    Returns:
    
    Role of the column
  - setJdbcType
```
Column setJdbcType(JdbcType jdbcType)
```
  - getJdbcType
```
JdbcType getJdbcType()
```
    Accessor for the JDBC Type used for this column.
    
    Returns:
    
    The Jdbc type
  - setTypeName
```
Column setTypeName(String type)
```
  - getTypeName
```
String getTypeName()
```
    Accessor for the native type name in the datastore for this column.
    
    Returns:
    
    The column type name
  - setPosition
```
Column setPosition(int pos)
```
  - getPosition
```
int getPosition()
```
    Accessor for the position of this column in the table (if specified).
    
    Returns:
    
    The position, or -1 if not specified
  - setColumnMetaData
```
Column setColumnMetaData(ColumnMetaData md)
```
  - getColumnMetaData
```
ColumnMetaData getColumnMetaData()
```
    Accessor for the metadata for this column (if any).
    
    Returns:
    
    Metadata for the column

Interface Column

Method Summary

Method Detail

getName

getTable

getMemberColumnMapping

isPrimaryKey

setPrimaryKey

setNullable

isNullable

setDefaultable

isDefaultable

getDefaultValue

setUnique

isUnique

getColumnType

setJdbcType

getJdbcType

setTypeName

getTypeName

setPosition

getPosition

setColumnMetaData

getColumnMetaData