net.ontopia.infoset.content

Class JDBCContentStore

java.lang.Object

net.ontopia.infoset.content.JDBCContentStore

All Implemented Interfaces:

ContentStoreIF

public class JDBCContentStore
extends Object
implements ContentStoreIF

INTERNAL: Content store implementation on top of JDBC that uses a non-native sequence generator to generate keys.

Field Summary

Fields

Modifier and Type	Field and Description
protected Connection	conn
protected KeyGeneratorIF	keygen
protected String	sql_get
protected String	sql_put
protected String	sql_remove

Constructor Summary

Constructors

Constructor and Description
JDBCContentStore(Connection conn, ConnectionFactoryIF connfactory)
JDBCContentStore(Connection conn, ConnectionFactoryIF connfactory, String tblname, String keyname, String valname)

Method Summary

Modifier and Type	Method and Description
int	add(ContentInputStream data) INTERNAL: Creates an entry for the specified data value.
int	add(InputStream data, int length) INTERNAL: Creates an entry for the specified data value.
void	close() INTERNAL: Closes the content store.
boolean	containsKey(int key) INTERNAL: Returns true if the content store contains an entry with the specified key.
protected int	generateId()
ContentInputStream	get(int key) INTERNAL: Gets the data value associated with the specified key.
static ContentStoreIF	getInstance(TopicMapIF topicmap)
protected void	init(String tblname, String keyname, String valname)
protected int	readLength(InputStream stream)
boolean	remove(int key) INTERNAL: Removes the entry associated with the key.

Methods inherited from class java.lang.Object

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

Field Detail

conn

protected Connection conn

keygen

protected KeyGeneratorIF keygen

sql_get

protected String sql_get

sql_put

protected String sql_put

sql_remove

protected String sql_remove

Constructor Detail

JDBCContentStore

public JDBCContentStore(Connection conn,
                        ConnectionFactoryIF connfactory)

JDBCContentStore

public JDBCContentStore(Connection conn,
                        ConnectionFactoryIF connfactory,
                        String tblname,
                        String keyname,
                        String valname)

Method Detail

getInstance

public static ContentStoreIF getInstance(TopicMapIF topicmap)

init

protected void init(String tblname,
                    String keyname,
                    String valname)

containsKey

public boolean containsKey(int key)
                    throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Returns true if the content store contains an entry with the specified key.

Specified by:

containsKey in interface ContentStoreIF

Throws:

ContentStoreException

get

public ContentInputStream get(int key)
                       throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Gets the data value associated with the specified key.

Specified by:

get in interface ContentStoreIF

Throws:

ContentStoreException

readLength

protected int readLength(InputStream stream)
                  throws IOException

Throws:

IOException

generateId

protected int generateId()

add

public int add(ContentInputStream data)
        throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Creates an entry for the specified data value.

Specified by:

add in interface ContentStoreIF

Throws:

ContentStoreException

add

public int add(InputStream data,
               int length)
        throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Creates an entry for the specified data value.

Specified by:

add in interface ContentStoreIF

Throws:

ContentStoreException

remove

public boolean remove(int key)
               throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Removes the entry associated with the key. If the key is not present the call has no effect.

Specified by:

remove in interface ContentStoreIF

Returns:

true if the key was present; false otherwise

Throws:

ContentStoreException

close

public void close()
           throws ContentStoreException

Description copied from interface: ContentStoreIF

INTERNAL: Closes the content store. This allows all internal resources to be released.

Specified by:

close in interface ContentStoreIF

Throws:

ContentStoreException