Environment (VTL Engine 1.0.8 API)

All Known Subinterfaces:

Workspace

All Known Implementing Classes:

CSVFileEnvironment, CSVPathEnvironment, REnvironment, SDMXEnvironment, SparkEnvironment, WorkspaceImpl
```
public interface Environment
```
A provider of VTL data objects.

Author:

Valentino Pinna

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`boolean`	`contains(String name)`	Checks if this environment provides a VTL object with the specified name.
`Optional<VTLValue>`	`getValue(String name)`	Returns an `Optional` reference to a VTL object with the specified name in this environment.
`default Optional<VTLValueMetadata>`	`getValueMetadata(String name)`	Returns an `Optional` reference to the metadata of a VTL object with the specified name in this environment.
`default Environment`	`init(Object... configuration)`	Implementing classes may override this method if they need to use a particular initialization procedure.

- Method Detail
  - contains
```
boolean contains(String name)
```
    Checks if this environment provides a VTL object with the specified name.
    
    Parameters:
    
    name - The name of requested object.
    
    Returns:
    
    true if this environment provides the specified object.
  - getValue
```
Optional<VTLValue> getValue(String name)
```
    Returns an Optional reference to a VTL object with the specified name in this environment.
    
    Parameters:
    
    name - The name of requested object.
    
    Returns:
    
    An Optional with a reference to the requested object o Optional.empty() if the object is not found in this environment.
  - getValueMetadata
```
default Optional<VTLValueMetadata> getValueMetadata(String name)
```
    Returns an Optional reference to the metadata of a VTL object with the specified name in this environment.
    
    Parameters:
    
    name - The name of requested object
    
    Returns:
    
    An Optional with a reference to the metadata of the requested object o Optional.empty() if the object is not found in this environment.
  - init
```
default Environment init(Object... configuration)
```
    Implementing classes may override this method if they need to use a particular initialization procedure.
    
    Parameters:
    
    configuration - Parameters that may be passed to the implementing class.
    
    Returns:
    
    this instance, initialized.