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CLOB Data Type → You use the CLOB data type to store large blocks of character data in the database, inline or out … -of-line. Both fixed-width and variable-width character sets are supported. Every CLOB variable stores … a locator, which points to a large block of character data. CLOB s participate fully in … rolled back. CLOB
CLOB Datatype → The CLOB datatype stores single-byte and multibyte character data. Both fixed-width and variable … -width character sets are supported, and both use the database character set. CLOB objects can store up … - 1) * (database block size). CLOB objects have full transactional support. Changes made through … SQL, the DBMS_LOB package,
CLOB and NCLOB Datatypes → The CLOB and NCLOB datatypes store up to 128 terabytes of character data in the database. CLOB s … provide efficient character-based random access on CLOBs and NCLOBs. CLOB s and NCLOB s participate … fully in transactions. Changes made to a CLOB or NCLOB value by the DBMS_LOB package, PL/SQL, or the OCI … can
Clob() → Clob class constructor. Syntax Description Clob(); Creates a NULL Clob object. Clob( const … Connection *connectionp); Creates an uninitialized Clob object. Clob( const Clob *srcClob); Creates a copy … of a Clob object. Parameter Description connectionp
Concatenation Operator → , VARCHAR2, CLOB, or the equivalent Unicode-enabled type. If either string is a CLOB, the result is a … temporary CLOB. otherwise, it is a VARCHAR2 value. Example 2-32 and many other examples in this book
isNull() → Tests whether the Clob object is atomically NULL. If the Clob object is atomically NULL, TRUE is
open() → Opens the CLOB in read/write or read-only mode. Syntax void open( LObOpenMode mode … = OCCI_LOB_READWRITE); Parameter Description mode The mode the CLOB is to be opened in. Valid values are: OCCI_LOB_READWRITE OCCI_LOB_READONLY
Method Summary → Clob() Clob class constructor. append() Appends a Clob at the end of the current Clob. close … () Closes a previously opened Clob. closeStream() Closes the Stream object obtained from the current Clob … . copy() Copies all or a portion of a Clob or BFILE into the current
operator!=() → Compares two Clob objects for inequality. Two Clob objects are equal if they both refer to the same … CLOB. Two NULL Clob objects are not considered equal. If the Clob objects are not equal, then TRUE … is returned; otherwise, FALSE is returned. Syntax bool operator!=( const Clob &srcClob)
setOptions() → not configured on the database column or partition that stores the CLOB. Will throw an exception if … attempting to turn off encryption in an encrypted CLOB column. Syntax void setOptions( LobOptionType
Clob Class → The Clob class defines the common properties of objects of type CLOB. A Clob is a large character … object stored as a column value in a row of a database table. A Clob object contains a logical … pointer to a CLOB, not the CLOB itself. Methods of the Clob class enable
copy() → Copies a part or all of a BFILE or CLOB into the current CLOB. OCCI does not perform any … characterset conversions when loading data from a Bfile into a Clob. therefore, ensure that the contents of … the Bfile are character data in the server's Clob storage characterset. Syntax Description void copy … ); Copies
getCharSetId() → Returns the character set ID of the CLOB, in string form. Syntax string getCharSetId() const;
length() → Returns the number of characters in the CLOB. Syntax unsigned int length() const;
setCharSetId() → Sets the Character set Id associated with Clob. The characterset id set will be used for read/write
setCharSetIdUString() → Sets the Character set Id associated with Clob. used when the environment's characterset is UTF16
write() → Writes data from a buffer into a CLOB. This method implicitly opens the CLOB, copies the buffer … into the CLOB, and implicitly closes the CLOB. If the CLOB is already open, use writeChunk() instead … , unsigned int offset=1); Writes data from a buffer into a CLOB. unsigned int write(
getStream() → Returns a Stream object from the CLOB. If a stream is already open, it is disallowed to open … another stream on CLOB object, so the user must always close the stream before performing any Clob object … reading data from the CLOB. If offset is not specified, the data is written from the beginning of the … CLOB.
isOpen() → Tests whether the CLOB is open. If the CLOB is open, TRUE is returned; otherwise, FALSE is returned. Syntax bool isOpen() const;