MetaFunctions (Couchbase Java SDK)

java.lang.Object
- com.couchbase.client.java.query.dsl.functions.MetaFunctions

```
@Experimental
@Public
public class MetaFunctions
extends Object
```
DSL for N1QL functions in the misc/meta category.

Since:

2.2

Author:

Simon Baslé, Michael Nitschinger

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Expression`	`base64(Expression expression)`
`static Expression`	`base64(String expression)`
`static Expression`	`meta(Expression expression)`
`static Expression`	`meta(String expression)`
`static Expression`	`uuid()`

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

- Method Detail
  - meta
```
public static Expression meta(Expression expression)
```
    Returns:
    
    metadata for the document expression
  - meta
```
public static Expression meta(String expression)
```
    Returns:
    
    metadata for the document expression
  - base64
```
public static Expression base64(Expression expression)
```
    Returns:
    
    Base64 encoding of the expression, on the server side
  - base64
```
public static Expression base64(String expression)
```
    Returns:
    
    Base64 encoding of the expression, on the server side
  - uuid
```
public static Expression uuid()
```
    Returns:
    
    a version 4 Universally Unique Identifier(UUID), generated on the server side