net.ontopia.topicmaps.db2tm
Interface ChangelogReaderIF

All Superinterfaces:
TupleReaderIF
All Known Implementing Classes:
ChangelogReaderWrapper

public interface ChangelogReaderIF
extends TupleReaderIF

INTERNAL: A change log reader is a tuple reader that is used to read a change log relation. For each tuple read it also returns the type of change and an order value that says something about the order in which the change occurred.


Field Summary
static int CHANGE_TYPE_CREATE
           
static int CHANGE_TYPE_DELETE
           
static int CHANGE_TYPE_IGNORE
           
static int CHANGE_TYPE_UNKNOWN
           
static int CHANGE_TYPE_UPDATE
           
 
Method Summary
 int getChangeType()
          INTERNAL: Returns the type of change that the current tuple went through.
 java.lang.String getOrderValue()
          INTERNAL: Returns the current order value found in the order-column.
 
Methods inherited from interface net.ontopia.topicmaps.db2tm.TupleReaderIF
close, readNext
 

Field Detail

CHANGE_TYPE_UNKNOWN

static final int CHANGE_TYPE_UNKNOWN
See Also:
Constant Field Values

CHANGE_TYPE_CREATE

static final int CHANGE_TYPE_CREATE
See Also:
Constant Field Values

CHANGE_TYPE_UPDATE

static final int CHANGE_TYPE_UPDATE
See Also:
Constant Field Values

CHANGE_TYPE_DELETE

static final int CHANGE_TYPE_DELETE
See Also:
Constant Field Values

CHANGE_TYPE_IGNORE

static final int CHANGE_TYPE_IGNORE
See Also:
Constant Field Values
Method Detail

getChangeType

int getChangeType()
INTERNAL: Returns the type of change that the current tuple went through.


getOrderValue

java.lang.String getOrderValue()
INTERNAL: Returns the current order value found in the order-column. This information is used so that one can keep track of incremental updates.



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