| java.lang.Object
 org.continuent.sequoia.common.protocol.ByteArrayBlob
| ByteArrayBlob | | public class ByteArrayBlob implements java.sql.Blob,Serializable(Code) | | The representation (mapping) in the Java TM
programming language of an SQL BLOB value. By default drivers
implement Blob using an SQL locator(BLOB),
which means that a Blob object contains a logical pointer to
the SQL BLOB data rather than the data itself. But since this
is highly database-specific, we are unable to do that and implement Blobs
using a simple private byte array copy instead. This may consume a lot of
memory but this is both portable across databases and even legal from a JDBC
standard point of view as long as our method
org.continuent.sequoia.driver.DatabaseMetaData.locatorsUpdateCopy returns true.
See Also: java.sql.Blob
author:
Marc Herbert
since:
JDK 1.2 |
| Field Summary | |
| byte[] | internalArray
The binary data that makes up this BLOB. |
| internalArray | | byte[] internalArray(Code) | | The binary data that makes up this BLOB.
|
| ByteArrayBlob | | public ByteArrayBlob(byte[] src)(Code) | | Creates a new Blob object built from a copy of the given
byte array.
Parameters:
src - the array to copy |
| checkSQLRangeIsSupported | | static void checkSQLRangeIsSupported(long sqlStart, int len) throws SQLException(Code) | | Checks that we can handle SQL indexes (sqlStart) and (sqlEnd =
sqlStart+len-1). Valid sqlStart begins at 1 (SQL-style). A reasonable
sqlEnd of Blob is no more than Integer.MAX_VALUE+1 because we implement
using Java arrays. This method is basically a check to use before casting
from long to int.
Parameters:
sqlStart - start index
Parameters:
len - length
throws:
SQLException - |
| free | | public void free()(Code) | | This method frees the Blob object and releases the resources that it holds.
|
| getInternalByteArray | | byte[] getInternalByteArray()(Code) | | BlobOutputStream needs it
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