de.unidu.is.util
Class DBPropertyMap

java.lang.Object
  de.unidu.is.util.PropertyMap
      de.unidu.is.util.DBPropertyMap

All Implemented Interfaces:

java.util.Map

public class DBPropertyMap

extends PropertyMap

A property map backed by a RDBMS table.

This class uses a table with two columns (the default names are "propkey" and "propvalue", but these can be changed) with the SQL type "text" for storing the property map. This means that this set can only be used with strings, or with objects for which the string representation is sufficient.

Since:

2003-06-22

Version:

$Revision: 1.8 $, $Date: 2005/02/28 22:27:55 $

Author:

Henrik Nottelmann

Nested Class Summary

Nested classes inherited from class java.util.Map

java.util.Map.Entry

Field Summary

protected DB	db The DB which is used for backing this map.
protected java.lang.String	keyCol The column name for the keys used for this map.
protected java.lang.String	tableName The table used for backing this map.
protected java.lang.String	valueCol The column name for the values used for this map.

Fields inherited from class de.unidu.is.util.PropertyMap

multipleValues

Constructor Summary

DBPropertyMap(DB db, java.lang.String tableName)
Creates a new instance (and the corresponding table, if it does not exists), and sets the columns to "propkey" and "propvalue".

DBPropertyMap(DB db, java.lang.String tableName, boolean multiple)
Creates a new instance (and the corresponding table, if it does not exists), and sets the columns to "propkey" and "propvalue".

DBPropertyMap(DB db, java.lang.String tableName, java.lang.String keyCol, java.lang.String valueCol)
Creates a new instance (and the corresponding table, if it does not exists), and sets the column names.

DBPropertyMap(DB db, java.lang.String tableName, java.lang.String keyCol, java.lang.String valueCol, boolean multiple)
Creates a new instance (and the corresponding table, if it does not exists), and sets the column names.

Method Summary

void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
void	delete() Deletes the corresponding table.
java.util.Set	entrySet()
boolean	equals(java.lang.Object obj)
java.lang.Object	get(java.lang.Object key)
java.util.List	getAll(java.lang.Object key) Returns a list with all values stored for the specified key.
int	hashCode()
boolean	isEmpty()
java.util.Set	keySet()
java.lang.Object	put(java.lang.Object key, java.lang.Object value)
void	putAll(java.util.Map t)
java.lang.Object	remove(java.lang.Object key)
void	remove(java.lang.Object key, java.lang.Object value) Removes the specified value for the specified key.
int	size()
java.lang.String	toString()
java.util.Collection	values()

Methods inherited from class de.unidu.is.util.PropertyMap

addDouble, addDouble, addDouble, addInt, addInt, addInt, apply, convertString, divDouble, divDouble, divDouble, divInt, divInt, divInt, getBoolean, getDouble, getInt, getLength, getLong, getMaxDouble, getMaxKey, getMinDouble, getString, getString, getSum, hasMultipleValues, inc, initDouble, isMultipleValues, multDouble, multDouble, multDouble, multDouble, multInt, multInt, multInt, normalizeLength, removeCloseToZero, removeZero, set, setBoolean, setDouble, setInt, setLong, setMultipleValues, setString, subDouble, subDouble, subDouble, subInt, subInt, subInt

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

db

protected DB db

The DB which is used for backing this map.

tableName

protected java.lang.String tableName

The table used for backing this map.

keyCol

protected java.lang.String keyCol

The column name for the keys used for this map.

valueCol

protected java.lang.String valueCol

The column name for the values used for this map.

Constructor Detail

DBPropertyMap

public DBPropertyMap(DB db,
                     java.lang.String tableName)

Creates a new instance (and the corresponding table, if it does not exists), and sets the columns to "propkey" and "propvalue".

Parameters:

db - DB used by this set

tableName - name of the table used by this set

DBPropertyMap

public DBPropertyMap(DB db,
                     java.lang.String tableName,
                     java.lang.String keyCol,
                     java.lang.String valueCol,
                     boolean multiple)

Creates a new instance (and the corresponding table, if it does not exists), and sets the column names.

Parameters:

db - DB used by this set

tableName - name of the table used by this set

keyCol - column name for keys

valueCol - column name for values

multiple - values if true, multiple values can be hold for a key

DBPropertyMap

public DBPropertyMap(DB db,
                     java.lang.String tableName,
                     boolean multiple)

Creates a new instance (and the corresponding table, if it does not exists), and sets the columns to "propkey" and "propvalue".

Parameters:

db - DB used by this set

tableName - name of the table used by this set

multiple - values if true, multiple values can be hold for a key

DBPropertyMap

public DBPropertyMap(DB db,
                     java.lang.String tableName,
                     java.lang.String keyCol,
                     java.lang.String valueCol)

Creates a new instance (and the corresponding table, if it does not exists), and sets the column names.

Parameters:

db - DB used by this set

tableName - name of the table used by this set

keyCol - column name for keys

valueCol - column name for values

Method Detail

clear

public void clear()

delete

public void delete()

Deletes the corresponding table.

containsKey

public boolean containsKey(java.lang.Object key)

containsValue

public boolean containsValue(java.lang.Object value)

entrySet

public java.util.Set entrySet()

get

public java.lang.Object get(java.lang.Object key)

isEmpty

public boolean isEmpty()

keySet

public java.util.Set keySet()

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

putAll

public void putAll(java.util.Map t)

remove

public java.lang.Object remove(java.lang.Object key)

size

public int size()

values

public java.util.Collection values()

equals

public boolean equals(java.lang.Object obj)

hashCode

public int hashCode()

toString

public java.lang.String toString()

getAll

public java.util.List getAll(java.lang.Object key)

Description copied from class: PropertyMap

Returns a list with all values stored for the specified key.

Specified by:

getAll in class PropertyMap

Parameters:

key - property key

Returns:

list with all values stored for the specified key

remove

public void remove(java.lang.Object key,
                   java.lang.Object value)

Description copied from class: PropertyMap

Removes the specified value for the specified key.

Specified by:

remove in class PropertyMap

Parameters:

key - property key

value - value to be removed