StandardEnvironmentVariableResolver

java.lang.Object
- net.sf.saxon.lib.StandardEnvironmentVariableResolver

All Implemented Interfaces:

EnvironmentVariableResolver
```
public class StandardEnvironmentVariableResolver
extends java.lang.Object
implements EnvironmentVariableResolver
```
Default implementation of the EnvironmentVariableResolver. This implementation maps "environment variables" as defined in the XPath context to environment variables delivered by Java using the System.getenv() method.

Constructor Summary

Constructors
Constructor Description

StandardEnvironmentVariableResolver()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.Set<java.lang.String>`	`getAvailableEnvironmentVariables()`	Get the list of available environment variables.
`java.lang.String`	`getEnvironmentVariable(java.lang.String name)`	Get the value of a specific environment variable

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

- Constructor Detail
  - StandardEnvironmentVariableResolver
```
public StandardEnvironmentVariableResolver()
```
- Method Detail
  - getAvailableEnvironmentVariables
```
public java.util.Set<java.lang.String> getAvailableEnvironmentVariables()
```
    Get the list of available environment variables.
    
    Specified by:
    
    getAvailableEnvironmentVariables in interface EnvironmentVariableResolver
    
    Returns:
    
    a set of strings; each such string should be an acceptable argument to the method getEnvironmentVariable(String)
  - getEnvironmentVariable
```
public java.lang.String getEnvironmentVariable(java.lang.String name)
```
    Get the value of a specific environment variable
    
    Specified by:
    
    getEnvironmentVariable in interface EnvironmentVariableResolver
    
    Parameters:
    
    name - the name of the required environment variable
    
    Returns:
    
    the value of the named environment variable, or null if the variable is not defined. The method must not return null if the name is in the list of variables returned by the method getAvailableEnvironmentVariables()