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oracle.jbo.domain
Interface LobStreamInterface

All Superinterfaces:

BlobDomainInterface, DomainInterface, LobInterface, MutableDomainInterface

All Known Implementing Classes:

BFileDomain, BlobDomain, ClobDomain, GenericBlob, GenericClob, NClobDomain

public interface LobStreamInterface

extends LobInterface

Provides methods to save data to, and extract data from, LOB domain classes. These methods are implemented by all LOB-based domain classes: BlobDomain, BFileDomain, and ClobDomain.

Domain classes encapsulate Oracle SQL datatypes. Domain objects can be converted to the standard JDBC data types.

Since:

JDevloper 3.0

See Also:

TypeFactory, "JboDomainValidator"

Method Summary

void	closeCharacterOutputStream() Closes and cleansup internal reference to writer.
void	closeCharacterStream() Closes the character-reader object.
void	closeInputStream() Closes the InputStream object.
void	closeOutputStream() Closes the OutputStream object.
java.io.Writer	getCharacterOutputStream() Returns a writer to be used to write chars into this CLOB.
java.io.Reader	getCharacterStream() Returns a stream to be used to read bytes from this LOB.
java.io.InputStream	getInputStream() Returns a stream to be used to read bytes from this LOB.
java.io.OutputStream	getOutputStream() Returns a stream to be used to write bytes into this LOB.

Methods inherited from interface oracle.jbo.domain.LobInterface

getOwner, getOwnerAttributeIndex, getRemoteIdString, getSize, syncClientLob, syncServerLob

Methods inherited from interface oracle.jbo.domain.BlobDomainInterface

loadFromDatabase, prepareForDML, saveToDatabase, saveToDatabase

Methods inherited from interface oracle.jbo.domain.DomainInterface

getData, setContext

Method Detail

getOutputStream

java.io.OutputStream getOutputStream()

Returns a stream to be used to write bytes into this LOB. This stream works in both 2/3 tiers. In 2-tier, this stream could be the same as the stream returned by the internal jdbc object. In 3-tier, this stream is a remote OutputStream that streams data from the middle-tier LOB.

Note that calling this multiple times returns the same OutputStream object. (It does not create a new OutputStream object each time it is called.) If you want to get a new OutputStream, call closeOutputStream then call getOutputStream.

closeOutputStream

void closeOutputStream()

Closes the OutputStream object. The OutputStream field is reset so that if getOutputStream() is called again, a new OutputStream is opened.

getInputStream

java.io.InputStream getInputStream()

Returns a stream to be used to read bytes from this LOB. This stream works in both 2/3 tiers. In 2-tier, this stream could be the same as the stream returned by the internal jdbc object. In 3-tier, this stream is a remote OutputStream that streams data from the middle-tier LOB.

Note that calling this multiple times returns the same InputStream object. (It does not create a new InputStream object each time it is called.) If you want to get a new InputStream, call closeInputStream then call getInputStream.

closeInputStream

void closeInputStream()

Closes the InputStream object. The InputStream field is reset so that if getInputStream() is called again, a new InputStream is opened.

getCharacterStream

java.io.Reader getCharacterStream()

Returns a stream to be used to read bytes from this LOB. This stream works in both 2/3 tiers. In 2-tier, this stream could be the same as the stream returned by the internal jdbc object. In 3-tier, this stream is a remote OutputStream that streams data from the middle-tier LOB.

Note that calling this multiple times returns the same Reader object. (It does not create a new Reader object each time it is called.) If you want to get a new Reader, call closeInputStream then call getInputStream.

closeCharacterStream

void closeCharacterStream()

Closes the character-reader object. The character-reader field is reset so that if getCharacterStream() is called again, a new character-reader is opened.

getCharacterOutputStream

java.io.Writer getCharacterOutputStream()

Returns a writer to be used to write chars into this CLOB. This stream works in both 2/3 tiers. In 2-tier, this writer could be the same as the writer returned by the internal jdbc object. In 3-tier, this stream is a remote writer that streams data from the middle-tier LOB.

closeCharacterOutputStream

void closeCharacterOutputStream()

Closes and cleansup internal reference to writer.

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