Package net.ontopia.infoset.content

Class JDBCSequenceContentStore

java.lang.Object

net.ontopia.infoset.content.JDBCSequenceContentStore

All Implemented Interfaces:

ContentStoreIF

public class JDBCSequenceContentStore
extends Object
implements ContentStoreIF

INTERNAL: Content store implementation on top of JDBC that uses native database sequences to generate keys. Note that this class requires JDBC3.

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
JDBCSequenceContentStore(Connection conn)
JDBCSequenceContentStore(Connection conn, String tblname, String keyname, String valname, String nextseq)

Method Summary

Modifier and Type	Method	Description
int	add(InputStream data, int length)	INTERNAL: Creates an entry for the specified data value.
int	add(ContentInputStream data)	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.
ContentInputStream	get(int key)	INTERNAL: Gets the data value associated with the specified key.
protected void	init(String tblname, String keyname, String valname, String nextseq)
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

sql_get

protected String sql_get

sql_put

protected String sql_put

sql_remove

protected String sql_remove

Constructor Detail

JDBCSequenceContentStore

public JDBCSequenceContentStore(Connection conn)

JDBCSequenceContentStore

public JDBCSequenceContentStore(Connection conn,
                                String tblname,
                                String keyname,
                                String valname,
                                String nextseq)

Method Detail

init

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

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

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