to.etc.dbutil

Class UnknownDB

java.lang.Object

to.etc.dbutil.BaseDB

to.etc.dbutil.UnknownDB

public class UnknownDB
extends BaseDB

Constructor Summary

Constructors

Constructor and Description
UnknownDB()

Method Summary

Modifier and Type	Method and Description
protected String	getCheckString() Returns a SQL statement that is the cheapest way to check the validity of a connection.
protected int	getFullSequenceID(Connection dbc, String seqname) Uses a table sequence to generate a value.
protected Reader	getLobReader(Connection dbc, ResultSet rs, int col) Returns a Reader from the blob (clob) column specified.
protected Reader	getLobReader(Connection dbc, ResultSet rs, String col) Returns a Reader from the blob (clob) column specified.
protected InputStream	getLobStream(Connection dbc, ResultSet rs, int col) Returns an InputStream from the blob (clob) column specified.
protected InputStream	getLobStream(Connection dbc, ResultSet rs, String col) Returns an InputStream from the blob (clob) column specified.
protected int	getSequenceID(Connection dbc, String tablename) Returns a sequence number that can be used to create a new PK for a record in the given table.
protected void	setBlob(Connection dbc, String table, String column, String[] pkfields, Object[] key, InputStream is, int len)
protected void	setBlob(Connection dbc, String table, String column, String where, InputStream is, int len) Writes a blob to the requested record using the normal setBinaryStream call.
protected void	setClob(Connection dbc, String table, String column, String where, Reader r) Writes a blob to the requested record using the normal setBinaryStream call.

Methods inherited from class to.etc.dbutil.BaseDB

getName, oracleOuterJoin, setBlob, streamCopy

Methods inherited from class java.lang.Object

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

Constructor Detail

UnknownDB

public UnknownDB()

Method Detail

getCheckString

protected String getCheckString()

Returns a SQL statement that is the cheapest way to check the validity of a connection.

Specified by:

getCheckString in class BaseDB

Returns:

getFullSequenceID

protected int getFullSequenceID(Connection dbc,
                                String seqname)
                         throws SQLException

Uses a table sequence to generate a value.

Specified by:

getFullSequenceID in class BaseDB

Parameters:

dbc - the connection

Returns:

the id

Throws:

SQLException - if the sequence could not be obtained

getSequenceID

protected int getSequenceID(Connection dbc,
                            String tablename)
                     throws SQLException

Description copied from class: BaseDB

Returns a sequence number that can be used to create a new PK for a record in the given table. Sequences are emulated on databases that do not support 'm.

Specified by:

getSequenceID in class BaseDB

Returns:

Throws:

SQLException

setBlob

protected void setBlob(Connection dbc,
                       String table,
                       String column,
                       String[] pkfields,
                       Object[] key,
                       InputStream is,
                       int len)
                throws SQLException

Specified by:

setBlob in class BaseDB

Throws:

SQLException

setBlob

protected void setBlob(Connection dbc,
                       String table,
                       String column,
                       String where,
                       InputStream is,
                       int len)
                throws SQLException

Writes a blob to the requested record using the normal setBinaryStream call. Used for jdbc-compliant databases.

Specified by:

setBlob in class BaseDB

Throws:

SQLException

setClob

protected void setClob(Connection dbc,
                       String table,
                       String column,
                       String where,
                       Reader r)
                throws Exception

Writes a blob to the requested record using the normal setBinaryStream call. Used for jdbc-compliant databases.

Specified by:

setClob in class BaseDB

Throws:

Exception

getLobReader

protected Reader getLobReader(Connection dbc,
                              ResultSet rs,
                              int col)
                       throws Exception

Returns a Reader from the blob (clob) column specified.

Specified by:

getLobReader in class BaseDB

Parameters:

rs -

col -

Returns:

Throws:

Exception

getLobReader

protected Reader getLobReader(Connection dbc,
                              ResultSet rs,
                              String col)
                       throws Exception

Returns a Reader from the blob (clob) column specified.

Specified by:

getLobReader in class BaseDB

Parameters:

rs -

col -

Returns:

Throws:

Exception

getLobStream

protected InputStream getLobStream(Connection dbc,
                                   ResultSet rs,
                                   int col)
                            throws Exception

Returns an InputStream from the blob (clob) column specified.

Specified by:

getLobStream in class BaseDB

Parameters:

rs -

col -

Returns:

Throws:

Exception

getLobStream

protected InputStream getLobStream(Connection dbc,
                                   ResultSet rs,
                                   String col)
                            throws Exception

Returns an InputStream from the blob (clob) column specified.

Specified by:

getLobStream in class BaseDB

Parameters:

rs -

col -

Returns:

Throws:

Exception