Catalog (PEGASUS)

All Known Subinterfaces:

ReplicaCatalog, SiteCatalog, TransformationCatalog, WorkCatalog

All Known Implementing Classes:

Abstract, Database, Database, Directory, File, FlushedCache, JDBCRC, MRC, OSGMM, Regex, SimpleFile, Text, XML, XML2
```
public interface Catalog
```
This interface create a common ancestor for all cataloging interfaces.

Version:

$Revision$

Author:

Jens-S. Vöckler, Yong Zhao

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String DB_ALL_PREFIX
The default DB Driver properties prefix.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`close()`	Explicitely free resources before the garbage collection hits.
`boolean`	`connect(java.util.Properties props)`	Establishes a link between the implementation and the thing the implementation is build upon.
`boolean`	`isClosed()`	Predicate to check, if the connection with the catalog's implementation is still active.

- Field Detail
  - DB_ALL_PREFIX
```
static final java.lang.String DB_ALL_PREFIX
```
    The default DB Driver properties prefix.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - connect
```
boolean connect(java.util.Properties props)
```
    Establishes a link between the implementation and the thing the implementation is build upon.
    FIXME: The cause for failure is lost without exceptions.
    
    Parameters:
    
    props - contains all necessary data to establish the link.
    
    Returns:
    
    true if connected now, or false to indicate a failure.
  - close
```
void close()
```
    Explicitely free resources before the garbage collection hits.
  - isClosed
```
boolean isClosed()
```
    Predicate to check, if the connection with the catalog's implementation is still active. This helps determining, if it makes sense to call close().
    
    Returns:
    
    true, if the implementation is disassociated, false otherwise.
    
    See Also:
    
    close()