VFSDatabase (QDL root module 1.6.0 API)

java.lang.Object
- edu.uiuc.ncsa.security.storage.sql.SQLDatabase
- - org.qdl_lang.vfs.VFSDatabase

```
public class VFSDatabase
extends edu.uiuc.ncsa.security.storage.sql.SQLDatabase
```
Note that all of the arguments to this database for keys are assumed to be normalized, resolved, etc., etc. so that no such logic is present here. The VFSFileProvider implementation that has an instance of this is charged with that.
Created by Jeff Gaynor
on 2/28/20 at 5:09 PM

Field Summary

Fields
Modifier and Type Field Description

static String CONTENT

static String EA

static String FILE_NAME

static String PATH_NAME

Constructor Summary

Constructors
Constructor Description

VFSDatabase(edu.uiuc.ncsa.security.storage.sql.ConnectionPool connectionPool, String fqTablename)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`	Completely empty the store of all entries.
`boolean`	`containsEntry(String[] key)`
`FileEntry`	`get(String[] key)`
`List<String>`	`getDistinctPaths()`
`boolean`	`mkdir(String[] key)`	Make a directory.
`void`	`put(String[] key, VFSEntry fileEntry)`
`FileEntry`	`remove(String[] key)`
`List<String>`	`selectByPath(String path)`	This takes a path of the form a/b/c/.../d/ (note normalization with ending slash) and returns the entries (i.e.
`void`	`update(String[] key, VFSEntry fileEntry)`

Methods inherited from class edu.uiuc.ncsa.security.storage.sql.SQLDatabase
destroyConnection, getConnection, getConnectionPool, releaseConnection, rsToMap, setConnectionPool

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

Field Detail

PATH_NAME
```
public static String PATH_NAME
```

FILE_NAME
```
public static String FILE_NAME
```

EA
```
public static String EA
```

CONTENT
```
public static String CONTENT
```

Constructor Detail

VFSDatabase

public VFSDatabase(edu.uiuc.ncsa.security.storage.sql.ConnectionPool connectionPool,
                   String fqTablename)

Method Detail
- selectByPath
```
public List<String> selectByPath(String path)
```
  This takes a path of the form a/b/c/.../d/ (note normalization with ending slash) and returns the entries (i.e. file names) for it. A single entry denotes this is a directory, effectively. No entries means this is not in the database.
  
  Parameters:
  
  path -
  
  Returns:
- getDistinctPaths
```
public List<String> getDistinctPaths()
```
- get
```
public FileEntry get(String[] key)
```
- containsEntry
```
public boolean containsEntry(String[] key)
```
- update
```
public void update(String[] key,
                   VFSEntry fileEntry)
```
- put
```
public void put(String[] key,
                VFSEntry fileEntry)
```
- mkdir
```
public boolean mkdir(String[] key)
```
  Make a directory. NOTE you must check elsewhere if this exists before trying to create it.
  
  Parameters:
  
  key -
  
  Returns:
- remove
```
public FileEntry remove(String[] key)
                 throws Exception
```
  Throws:
  
  Exception
- clear
```
public void clear()
```
  Completely empty the store of all entries.
  
  Use it wisely.