Class CursorInfo

java.lang.Object

org.apache.derby.impl.sql.CursorInfo

All Implemented Interfaces:

Externalizable, Serializable, Formatable, TypedFormat

public class CursorInfo
extends Object
implements Formatable

A basic holder for information about cursors for execution.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
(package private) ExecCursorTableReference	targetTable	This class implements Formatable.
(package private) List<String>	updateColumns
(package private) int	updateMode

Constructor Summary

Constructors

Constructor	Description
CursorInfo()	Niladic constructor for Formatable
CursorInfo(int updateMode, ExecCursorTableReference targetTable, List<String> updateColumns)

Method Summary

Modifier and Type	Method	Description
int	getTypeFormatId()	Get the formatID which corresponds to this class.
void	readExternal(ObjectInput in)	Read this object from a stream of stored objects.
String	toString()
void	writeExternal(ObjectOutput out)	Write this object out

Methods inherited from class Object

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

Field Details

targetTable

ExecCursorTableReference targetTable

This class implements Formatable. That means that it can write itself to and from a formatted stream. If you add more fields to this class, make sure that you also write/read them with the writeExternal()/readExternal() methods. If, inbetween releases, you add more fields to this class, then you should bump the version number emitted by the getTypeFormatId() method.

updateColumns

List<String> updateColumns

updateMode

int updateMode

Constructor Details

CursorInfo

public CursorInfo()

Niladic constructor for Formatable

CursorInfo

public CursorInfo(int updateMode,
 ExecCursorTableReference targetTable,
 List<String> updateColumns)

Method Details

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Write this object out

Specified by:

writeExternal in interface Externalizable

Parameters:

out - write bytes here

Throws:

IOException - thrown on error

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Read this object from a stream of stored objects.

Specified by:

readExternal in interface Externalizable

Parameters:

in - read this.

Throws:

IOException - thrown on error

ClassNotFoundException - thrown on error

getTypeFormatId

public int getTypeFormatId()

Get the formatID which corresponds to this class.

Specified by:

getTypeFormatId in interface TypedFormat

Returns:

the formatID of this class

toString

public String toString()

Overrides:

toString in class Object