ChangelogReaderWrapper (Ontopia)

java.lang.Object
- net.ontopia.topicmaps.db2tm.ChangelogReaderWrapper

All Implemented Interfaces:

ChangelogReaderIF, TupleReaderIF
```
public class ChangelogReaderWrapper
extends Object
implements ChangelogReaderIF
```
INTERNAL: This tuple reader wraps an underlying tuple reader, and collapses a sequence of actions for the same key into a single final action. Tuples are coming through ordered by key first, then by sequence.

Constructor Summary

Constructors
Constructor Description

ChangelogReaderWrapper(ChangelogReaderIF source, Relation relation)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	INTERNAL: Releases all resources held by the tuple reader.
`ChangeType`	`getChangeType()`	INTERNAL: Returns the type of change that the current tuple went through.
`String`	`getOrderValue()`	INTERNAL: Returns the current order value found in the order-column.
`String[]`	`readNext()`	INTERNAL: Returns the next tuple.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ChangelogReaderWrapper
```
public ChangelogReaderWrapper(ChangelogReaderIF source,
                              Relation relation)
```
- Method Detail
  - getChangeType
```
public ChangeType getChangeType()
```
    Description copied from interface: ChangelogReaderIF
    
    INTERNAL: Returns the type of change that the current tuple went through.
    
    Specified by:
    
    getChangeType in interface ChangelogReaderIF
  - getOrderValue
```
public String getOrderValue()
```
    Description copied from interface: ChangelogReaderIF
    
    INTERNAL: Returns the current order value found in the order-column. This information is used so that one can keep track of incremental updates.
    
    Specified by:
    
    getOrderValue in interface ChangelogReaderIF
  - readNext
```
public String[] readNext()
```
    Description copied from interface: TupleReaderIF
    
    INTERNAL: Returns the next tuple. Method will return null when there are no more tuples.
    
    Specified by:
    
    readNext in interface TupleReaderIF
  - close
```
public void close()
```
    Description copied from interface: TupleReaderIF
    
    INTERNAL: Releases all resources held by the tuple reader. This method should be called when done with the tuple reader.
    
    Specified by:
    
    close in interface TupleReaderIF