net.sf.saxon.lib

Class StandardEnvironmentVariableResolver

java.lang.Object

net.sf.saxon.lib.StandardEnvironmentVariableResolver

All Implemented Interfaces:

EnvironmentVariableResolver

public class StandardEnvironmentVariableResolver
extends 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 and Description
StandardEnvironmentVariableResolver()

Method Summary

Modifier and Type	Method and Description
Set<String>	getAvailableEnvironmentVariables() Get the list of available environment variables.
String	getEnvironmentVariable(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 Set<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 String getEnvironmentVariable(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()