BufferManagerObserver (NanoDB SQL Relational Database 0.1-SNAPSHOT API)

All Known Implementing Classes:

TransactionManager
```
public interface BufferManagerObserver
```
This interface allows other classes to respond to operations performed by the BufferManager. For example, the TransactionManager observes the BufferManager to update the write-ahead log files appropriately, based on what pages are being written out to disk.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`beforeWriteDirtyPages(java.util.List<DBPage> pages)`	This method is called before the buffer manager writes the specified collection of pages.

- Method Detail
  - beforeWriteDirtyPages
```
void beforeWriteDirtyPages(java.util.List<DBPage> pages)
```
    This method is called before the buffer manager writes the specified collection of pages.
    
    Parameters:
    
    pages - a collection of DBPage objects that are about to be written back to disk