public interface Clob
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. By default drivers implement 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. In addition, this interface has methods for updating a CLOB value.
InputStream getAsciiStream()
CLOB value designated by this Clob object as an ascii stream. Reader getCharacterStream()
CLOB value designated by this Clob object as a java.io.Reader object (or as a stream of characters). String getSubString(long pos, int length)
CLOB value designated by this Clob object. long length()
CLOB value designated by this Clob object. long position(Clob searchstr, long start)
Clob object searchstr appears in this Clob object. long position(String searchstr, long start)
searchstr appears in the SQL CLOB value represented by this Clob object. OutputStream setAsciiStream(long pos)
CLOB value that this Clob object represents, starting at position pos. Writer setCharacterStream(long pos)
CLOB value that this Clob object represents, at position pos. int setString(long pos, String str)
String to the CLOB value that this Clob object designates at the position pos. int setString(long pos, String str, int offset, int len)
len characters of str, starting at character offset, to the CLOB value that this Clob represents. void truncate(long len)
CLOB value that this Clob designates to have a length of len characters. length
long length()
throws SQLException
CLOB value designated by this Clob object.
CLOB in characters
SQLException - if there is an error accessing the length of the CLOB value
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 copied
String that is the specified substring in the CLOB value designated by this Clob object
SQLException - if there is an error accessing the CLOB value
Reader getCharacterStream()
throws SQLException
CLOB value designated by this Clob object as a java.io.Reader object (or as a stream of characters).
java.io.Reader object containing the CLOB data
SQLException - if there is an error accessing the CLOB value
setCharacterStream(long)
InputStream getAsciiStream()
throws SQLException
CLOB value designated by this Clob object as an ascii stream.
java.io.InputStream object containing the CLOB data
SQLException - if there is an error accessing the CLOB value
setAsciiStream(long)
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 search
start - the position at which to begin searching; the first position is 1
SQLException - if there is an error accessing the CLOB value
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 search
start - the position at which to begin searching; the first position is 1
Clob object appears or -1 if it is not present; the first position is 1
SQLException - if there is an error accessing the CLOB value
int setString(long pos,
String str)
throws SQLException
String to the CLOB value that this Clob object designates at the position pos.
pos - the position at which to start writing to the CLOB value that this Clob object represents
str - the string to be written to the CLOB value that this Clob designates
SQLException - if there is an error accessing the CLOB value
int setString(long pos,
String str,
int offset,
int len)
throws SQLException
len characters of str, starting at character offset, to the CLOB value that this Clob represents.
pos - the position at which to start writing to this CLOB object
str - the string to be written to the CLOB value that this Clob object represents
offset - the offset into str to start reading the characters to be written
len - the number of characters to be written
SQLException - if there is an error accessing the CLOB value
OutputStream setAsciiStream(long pos)
throws SQLException
CLOB value that this Clob object represents, starting at position pos.
pos - the position at which to start writing to this CLOB object
SQLException - if there is an error accessing the CLOB value
getAsciiStream()
Writer setCharacterStream(long pos)
throws SQLException
CLOB value that this Clob object represents, at position pos.
pos - the position at which to start writing to the CLOB value
SQLException - if there is an error accessing the CLOB value
getCharacterStream()
void truncate(long len)
throws SQLException
CLOB value that this Clob designates to have a length of len characters.
len - the length, in bytes, to which the CLOB value should be truncated
SQLException - if there is an error accessing the CLOB value
Copyright © 2004, 2010 Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
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