The Blob interface represents (maps) an SQL BLOB in the Java(TM) programming language. An SQL BLOB is a built-in type that stores a binary large object as a column value in a row of a database table. A BLOB object is valid for the duration of the transaction in which it was created.
Methods in the interfaces ResultSet and PreparedStatement, such as getBlob and setBlob allow a programmer to access the SQL BLOB. The Blob interface provides methods for getting the length of an SQL BLOB (binary large object) value and for materializing a BLOB value on the client.
java.sql package
public interface Blob
ǥ 96 lists the methods in the Blob interface that
are supported by DB2 Everyplace.
| Method return value type | Method |
|---|---|
| InputStream | getBinaryStream() Retrieves the BLOB designated by this BLOB instance as a stream. |
| byte[] | getBytes(long pos, int length) Returns as an array of bytes part or all of the BLOB value that this BLOB object designates. |
| long | length() Returns the number of bytes in the BLOB value designated by this BLOB object. |
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