Package adams.db

Class ColumnMapping

java.lang.Object

adams.db.ColumnMapping

public class ColumnMapping
extends Object

Implements a set of table columns, mapping names to sql types

Version:

$Revision$

Author:

dale

Field Summary

Fields

Modifier and Type	Field	Description
protected Hashtable<String,ColumnType>	m_Mapping	name -> type mapping
protected String	m_PrimaryKey	primary key

Constructor Summary

Constructors

Constructor	Description
ColumnMapping()	Constructor

Method Summary

Modifier and Type	Method	Description
void	addMapping(String cname, ColumnType typ)	Add a 'column', name-> sql type mapping
ColumnType	getMapping(String cname)	Get the sql type for a column name
String	getPrimaryKey()	Get primary key column
boolean	hasPrimaryKey()	Does this mapping contain a primary key column?
Enumeration<String>	keys()	Return all columns as an enumeration
void	setPrimaryKey(String id)	Set Column name that is primary key
int	size()	Get number of columns
String	toString()	Returns a string representation of the column mapping.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_PrimaryKey

protected String m_PrimaryKey

primary key

m_Mapping

protected Hashtable<String,ColumnType> m_Mapping

name -> type mapping

Constructor Detail

ColumnMapping

public ColumnMapping()

Constructor

Method Detail

addMapping

public void addMapping(String cname,
                       ColumnType typ)

Add a 'column', name-> sql type mapping

Parameters:

cname - column name

typ - sql type

getMapping

public ColumnType getMapping(String cname)

Get the sql type for a column name

Parameters:

cname - column name

Returns:

sql type

keys

public Enumeration<String> keys()

Return all columns as an enumeration

Returns:

column names

size

public int size()

Get number of columns

Returns:

number of columns

setPrimaryKey

public void setPrimaryKey(String id)

Set Column name that is primary key

Parameters:

id - column name

hasPrimaryKey

public boolean hasPrimaryKey()

Does this mapping contain a primary key column?

Returns:

has primary key?

getPrimaryKey

public String getPrimaryKey()

Get primary key column

Returns:

column name

toString

public String toString()

Returns a string representation of the column mapping.

Overrides:

toString in class Object

Returns:

the string representation