Datas (BaseX Core 11.0 API)

java.lang.Object
- org.basex.core.Datas

```
public final class Datas
extends Object
```
This class organizes currently opened databases.

Author:

BaseX Team 2005-24, BSD License, Christian Gruen

Constructor Summary

Constructors
Constructor Description

Datas()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Data`	`pin(String name)`	Pins and returns a database with the specified name.
`void`	`pin(Data data)`	Pins a data reference.
`int`	`pins(String name)`	Returns the number of pins for the database with the specified name, or `0` if the database is not opened.
`void`	`unpin(Data data)`	Unpins a data reference and closes the database if no references exist anymore.

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

- Constructor Detail
  - Datas
```
public Datas()
```
- Method Detail
  - pin
```
public Data pin(String name)
```
    Pins and returns a database with the specified name.
    
    Parameters:
    
    name - name of the database
    
    Returns:
    
    data reference, or null if the database is not registered
  - pin
```
public void pin(Data data)
```
    Pins a data reference.
    
    Parameters:
    
    data - data reference
  - unpin
```
public void unpin(Data data)
```
    Unpins a data reference and closes the database if no references exist anymore.
    
    Parameters:
    
    data - data reference
  - pins
```
public int pins(String name)
```
    Returns the number of pins for the database with the specified name, or 0 if the database is not opened.
    
    Parameters:
    
    name - name of the database
    
    Returns:
    
    number of references