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oracle.jbo.domain
Class BaseLobDomain

java.lang.Object
oracle.jbo.domain.BaseLobDomain

All Implemented Interfaces:

java.io.Serializable, MarshalledDomain, oracle.jdbc.internal.ObjectData, ORAData

Direct Known Subclasses:

BlobDomain, ClobDomain

public abstract class BaseLobDomain

extends java.lang.Object

implements java.io.Serializable, ORAData, MarshalledDomain

This class provides a lightweight wrapper for oracle.sql.BLOB, the Java representation of the BLOB database type. This wrapper allows an instance of the oracle.sql.BLOB to be used as a domain object.

Since:

JDeveloper 3.0

See Also:

Serialized Form

Method Summary

void	closeCharacterStream()
void	closeInputStream()
void	closeOutputStream()
boolean	equals(java.lang.Object obj) Tests for equality between this and obj.
java.io.Reader	getCharacterStream()
java.lang.Object	getData() Internal: Applications should not use this method.
java.io.InputStream	getInputStream()
static java.lang.reflect.Method	getInvokeDomainMethod()
java.io.OutputStream	getOutputStream()
DomainOwnerInterface	getOwner()
int	getOwnerAttributeIndex()
protected DomainOwnerInterface	getOwnerRow()
protected int	getRemoteBufferSize()
java.lang.String	getRemoteIdString()
protected long	getRemoteLength()
long	getSize()
byte[]	getStorageByteArray()
boolean	isCacheDataModified()
void	loadFromDatabase(Transaction xAct) Internal: Applications should not use this method.
ResponseValues	marshal()
protected void	resetCachedData()
void	saveToDatabase(Transaction xAct) Internal: Applications should not use this method.
void	saveToDatabase(Transaction xAct, java.lang.Object emptySQLObject) Internal: Applications should not use this method.
void	setBytes(byte[] blobData) Sets the blob data for this object.
void	setContext(DomainOwnerInterface owner, Transaction trans, java.lang.Object ctx) Internal: Applications should not use this method.
void	syncClientLob(LobInterface oldObj)
void	syncServerLob(LobInterface oldObj)
byte[]	toByteArray() Converts this BLOB contents into a byte array.
Datum	toDatum(java.sql.Connection c) Internal: Applications should not use this method.
java.lang.String	toString() For testing purposes only: converts this BlobDomain object to a string.

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

toDatum

public Datum toDatum(java.sql.Connection c)
              throws java.sql.SQLException

Internal: Applications should not use this method.

Converts this Domain object back into a SQL object.

Specified by:

toDatum in interface ORAData

Parameters:

c - OracleConnection Not used.

Returns:

A Datum object.

Throws:

java.sql.SQLException - if the serialization or deserialization fails.

setBytes

public void setBytes(byte[] blobData)

Sets the blob data for this object. On the client side, if there's a context available with this object, the bytes are streamed to the middle-tier object right-away. However if there's no context object, it's assumed that there will be a setAttribute call invoked on a containing row with this object as argument to stream the bytes via piggy-back.

Parameters:

blobData - data to fill the Blob.

loadFromDatabase

public void loadFromDatabase(Transaction xAct)
                      throws java.lang.Exception

Internal: Applications should not use this method.

Uses the given transaction context to load data from the database.

Parameters:

xAct - name of the transaction context.

Throws:

java.lang.Exception

setContext

public void setContext(DomainOwnerInterface owner,
                       Transaction trans,
                       java.lang.Object ctx)

Internal: Applications should not use this method.

Sets the transaction context for this Blob.

getRemoteBufferSize

protected int getRemoteBufferSize()

getRemoteLength

protected long getRemoteLength()

getData

public java.lang.Object getData()

Internal: Applications should not use this method.

saveToDatabase

public void saveToDatabase(Transaction xAct)
                    throws java.sql.SQLException

Internal: Applications should not use this method.

Uses the given transaction context to store data back into the database using the blob-locator which should be set before this method is invoked.

Parameters:

xAct - name of the transaction context.

Throws:

java.sql.SQLException

saveToDatabase

public void saveToDatabase(Transaction xAct,
                           java.lang.Object emptySQLObject)
                    throws java.sql.SQLException

Internal: Applications should not use this method.

Uses the given transaction context to store data back into the database using the blob-locator which should be set before this method is invoked.

Throws:

java.sql.SQLException

toString

public java.lang.String toString()

For testing purposes only: converts this BlobDomain object to a string.

Overrides:

toString in class java.lang.Object

Returns:

this BlobDomain as a string.

isCacheDataModified

public boolean isCacheDataModified()

getStorageByteArray

public byte[] getStorageByteArray()

toByteArray

public byte[] toByteArray()

Converts this BLOB contents into a byte array.

Returns:

a byte array containing the contents of the BLOB.

equals

public boolean equals(java.lang.Object obj)

Tests for equality between this and obj. Converts all the data into a String and compares the two strings. This is a default implementation of equals which could be overridden to perform more scalable application-specific comparisons.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the data item to compare against.

marshal

public ResponseValues marshal()

Specified by:

marshal in interface MarshalledDomain

getOutputStream

public java.io.OutputStream getOutputStream()

getRemoteIdString

public java.lang.String getRemoteIdString()

getOwner

public DomainOwnerInterface getOwner()

getOwnerAttributeIndex

public int getOwnerAttributeIndex()

getOwnerRow

protected DomainOwnerInterface getOwnerRow()

getInputStream

public java.io.InputStream getInputStream()

getCharacterStream

public java.io.Reader getCharacterStream()

resetCachedData

protected void resetCachedData()

syncClientLob

public void syncClientLob(LobInterface oldObj)

syncServerLob

public void syncServerLob(LobInterface oldObj)

getSize

public long getSize()

getInvokeDomainMethod

public static java.lang.reflect.Method getInvokeDomainMethod()

closeOutputStream

public void closeOutputStream()

closeInputStream

public void closeInputStream()

closeCharacterStream

public void closeCharacterStream()

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