|
JavaTM 2 Platform Std. Ed. v1.3 |
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
The mapping in the JavaTM programming language
for the SQL CLOB type.
An SQL CLOB is a built-in type
that stores a Character Large Object as a column value in a row of
a database table.
The driver implements a Clob object using an SQL
locator(CLOB), which means that a Clob object
contains a logical pointer to the SQL CLOB data rather than
the data itself. A Clob object is valid for the duration
of the transaction in which it was created.
The Clob interface provides methods for getting the
length of an SQL CLOB (Character Large Object) value,
for materializing a CLOB value on the client, and for
searching for a substring or CLOB object within a
CLOB value.
Methods in the interfaces ResultSet,
CallableStatement, and PreparedStatement, such as
getClob and setClob allow a programmer to
access an SQL CLOB value.
This class is new in the JDBC 2.0 API.
| Method Summary | |
InputStream |
getAsciiStream()
Gets the CLOB value designated by this Clob
object as a stream of Ascii bytes. |
Reader |
getCharacterStream()
Gets the CLOB value designated by this Clob
object as a Unicode stream. |
String |
getSubString(long pos,
int length)
Returns a copy of the specified substring in the CLOB value
designated by this Clob object. |
long |
length()
Returns the number of characters in the CLOB value
designated by this Clob object. |
long |
position(Clob searchstr,
long start)
Determines the character position at which the specified Clob object searchstr appears in this
Clob object. |
long |
position(String searchstr,
long start)
Determines the character position at which the specified substring searchstr appears in the SQL CLOB value
represented by this Clob object. |
| Method Detail |
public long length()
throws SQLException
CLOB value
designated by this Clob object.CLOB in charactersSQLException - if there is an error accessing the
length of the CLOB
public String getSubString(long pos,
int length)
throws SQLException
CLOB value
designated by this Clob object.
The substring begins at position
pos and has up to length consecutive
characters.pos - the first character of the substring to be extracted.
The first character is at position 1.length - the number of consecutive characters to be copiedString that is the specified substring in
the CLOB value designated by this Clob objectSQLException - if there is an error accessing the
CLOB
public Reader getCharacterStream()
throws SQLException
CLOB value designated by this Clob
object as a Unicode stream.CLOB dataSQLException - if there is an error accessing the
CLOB value
public InputStream getAsciiStream()
throws SQLException
CLOB value designated by this Clob
object as a stream of Ascii bytes.CLOB dataSQLException - if there is an error accessing the
CLOB value
public long position(String searchstr,
long start)
throws SQLException
searchstr appears in the SQL CLOB value
represented by this Clob object. The search
begins at position start.searchstr - the substring for which to searchstart - the position at which to begin searching; the first position
is 1SQLException - if there is an error accessing the
CLOB value
public long position(Clob searchstr,
long start)
throws SQLException
Clob object searchstr appears in this
Clob object. The search begins at position
start.searchstr - the Clob object for which to searchstart - the position at which to begin searching; the first
position is 1Clob object appears,
else -1; the first position is 1SQLException - if there is an error accessing the
CLOB value
|
JavaTM 2 Platform Std. Ed. v1.3 |
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
Java, Java 2D, and JDBC are trademarks or registered trademarks of Sun Microsystems, Inc. in the US and other countries.
Copyright 1993-2000 Sun Microsystems, Inc. 901 San Antonio Road
Palo Alto, California, 94303, U.S.A. All Rights Reserved.