Package org.apache.juneau.svl.vars

Class SystemPropertiesVar

java.lang.Object

org.apache.juneau.svl.Var

org.apache.juneau.svl.SimpleVar

org.apache.juneau.svl.DefaultingVar

org.apache.juneau.svl.MapVar

org.apache.juneau.svl.vars.SystemPropertiesVar

public class SystemPropertiesVar
extends MapVar

System property variable resolver.

The format for this var is "$S{systemProperty[,defaultValue]}"

Example:

// Create a variable resolver that resolves system properties (e.g. "$S{java.home}") VarResolver varResolver = VarResolver.create().vars(SystemPropertiesVar.class).build(); // Use it! System.out.println(varResolver.resolve("java.home is set to $S{java.home}"));

Since this is a SimpleVar, any variables contained in the result will be recursively resolved.
Likewise, if the arguments contain any variables, those will be resolved before they are passed to this var.

See Also:

• Simple Variable Language Basics

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NAME	The name of this variable.

Constructor Summary

Constructors

Constructor	Description
SystemPropertiesVar()	Constructor.

Method Summary

Methods inherited from class org.apache.juneau.svl.MapVar

resolve

Methods inherited from class org.apache.juneau.svl.DefaultingVar

doResolve

Methods inherited from class org.apache.juneau.svl.SimpleVar

resolveTo

Methods inherited from class org.apache.juneau.svl.Var

allowNested, allowRecurse, canResolve, getName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

NAME

public static final String NAME

The name of this variable.

See Also:

• Constant Field Values

Constructor Details

SystemPropertiesVar

public SystemPropertiesVar()

Constructor.