oracle.lite.resource

Class ResourceCache

java.lang.Object

oracle.lite.resource.ResourceCache

Direct Known Subclasses:

ResourceManager

public class ResourceCache
extends java.lang.Object

This class acts as cache for all the resources in the DMS.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ADDRESS
static int	APPLICATION
static int	COMMAND
static int	DEVICE
static int	GROUP
static int	LANGUAGE
static int	OBSOLETE
static int	PLATFORM
static int	PROVIDER
static int	ROLE
static int	UNKNOWN Resource types
static int	USER

Constructor Summary

Constructors

Constructor and Description
ResourceCache()

Method Summary

Methods

Modifier and Type	Method and Description
static void	addToCache(java.lang.String id, Resource res) Add a resource object to the temporary resource cache.
static void	clearCache() Empty resource cache
void	commit() Commit database connection.
java.sql.Statement	createStatement() Return a newly created SQL Statement object
static java.util.Enumeration	elements(int type) Return an Enumeration object containing all cached objects
static Resource	get(int type, java.lang.String id) Retrieve a cached resource object.
boolean	getAutoCommit() Get auto commit flag.
java.sql.Connection	getConnection() Return the current database connection.
static java.lang.String[]	getConnectionInfo(java.lang.String conn) Helper method to extract User Name, Password and JDBC URL from the connection string.
static Resource	getFromCache(java.lang.String id) Retrieve a resource object from the temporary resource cache
static boolean	isEmpty(int type) Check if the cache for a specific resource type is empty or not.
static java.util.Vector	objects(int type) Return a java.util.Vector object containing sorted Resource objects.
static void	print(int type) Print the content of a cache table.
static void	put(int type, Resource res) Put a new resource object in the cache.
static void	put(int type, java.lang.String id, Resource res) Put a new resource object in the cache.
static void	remove(int type, java.lang.String id) Remove a Resource object from the cache.
static void	removeFromCache(java.lang.String id) Remove a resource object from the temporary resource cache
void	setAutoCommit(boolean enable) Enable/Disbale database connection 'commit'.
void	synchronize(java.lang.String proxyHost, int proxyPort) Synchronize resource cache of all running instances of mobile servers.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ADDRESS

public static final int ADDRESS

See Also:

Constant Field Values

APPLICATION

public static final int APPLICATION

See Also:

Constant Field Values

COMMAND

public static final int COMMAND

See Also:

Constant Field Values

DEVICE

public static final int DEVICE

See Also:

Constant Field Values

GROUP

public static final int GROUP

See Also:

Constant Field Values

LANGUAGE

public static final int LANGUAGE

See Also:

Constant Field Values

OBSOLETE

public static final int OBSOLETE

See Also:

Constant Field Values

PLATFORM

public static final int PLATFORM

See Also:

Constant Field Values

PROVIDER

public static final int PROVIDER

See Also:

Constant Field Values

ROLE

public static final int ROLE

See Also:

Constant Field Values

UNKNOWN

public static final int UNKNOWN

Resource types

See Also:

Constant Field Values

USER

public static final int USER

See Also:

Constant Field Values

Constructor Detail

ResourceCache

public ResourceCache()

Method Detail

addToCache

public static void addToCache(java.lang.String id,
              Resource res)

Add a resource object to the temporary resource cache.

Parameters:

id - Resource's unique identifier.

res - Resource object

clearCache

public static void clearCache()

Empty resource cache

commit

public void commit()
            throws ResourceException

Commit database connection. If auto-commit flag is set to false, this method will not commit transactions.

Throws:

ResourceException

createStatement

public java.sql.Statement createStatement()
                                   throws java.sql.SQLException

Return a newly created SQL Statement object

Returns:

java.sql.Statement object.

Throws:

java.sql.SQLException

java.sql.SQLException

elements

public static java.util.Enumeration elements(int type)

Return an Enumeration object containing all cached objects

Parameters:

type - Resource type

get

public static Resource get(int type,
           java.lang.String id)
                    throws ResourceException

Retrieve a cached resource object.

Parameters:

type - Resource type

id - Resource Id

Throws:

ResourceException

getAutoCommit

public boolean getAutoCommit()

Get auto commit flag.

Returns:

true if auto commit is on.

getConnection

public java.sql.Connection getConnection()
                                  throws java.sql.SQLException

Return the current database connection. If the existing connection is closed or 'null', this method will try to get a new connection object.

Returns:

Instance of java.sql.Connection class

Throws:

java.sql.SQLException - in case of an error.

java.sql.SQLException

getConnectionInfo

public static java.lang.String[] getConnectionInfo(java.lang.String conn)
                                            throws java.lang.IllegalArgumentException

Helper method to extract User Name, Password and JDBC URL from the connection string.

Returns:

java.String[] containing User Name, Password and JDBC URL

Throws:

java.lang.IllegalArgumentException

java.lang.IllegalArgumentException

getFromCache

public static Resource getFromCache(java.lang.String id)

Retrieve a resource object from the temporary resource cache

Parameters:

id - Resource's unique identifier.

isEmpty

public static boolean isEmpty(int type)

Check if the cache for a specific resource type is empty or not.

Parameters:

type - Resource type

objects

public static java.util.Vector objects(int type)

Return a java.util.Vector object containing sorted Resource objects.

Parameters:

type - Resource type

print

public static void print(int type)

Print the content of a cache table.

put

public static void put(int type,
       Resource res)

Put a new resource object in the cache.

Parameters:

type - Resource type

res - Resource object

put

public static void put(int type,
       java.lang.String id,
       Resource res)

Put a new resource object in the cache.

Parameters:

type - Resource type

id - Resource Id

res - Resource object

remove

public static void remove(int type,
          java.lang.String id)

Remove a Resource object from the cache.

Parameters:

type - Resource type

id - Resource Id

removeFromCache

public static void removeFromCache(java.lang.String id)

Remove a resource object from the temporary resource cache

Parameters:

id - Resource's unique identifier.

setAutoCommit

public void setAutoCommit(boolean enable)

Enable/Disbale database connection 'commit'.

Parameters:

enable - true to turn on the auto-commit.

synchronize

public void synchronize(java.lang.String proxyHost,
               int proxyPort)
                 throws ResourceException

Synchronize resource cache of all running instances of mobile servers.

Parameters:

proxyHost - Proxy server's host name (or IP address)

proxyPort - Proxy server's port number

Throws:

oracle.lite.resource.ResourceException

ResourceException