Package org.apache.juneau.commons.svl.vars

Class PropertyVar

java.lang.Object

org.apache.juneau.commons.svl.Var

org.apache.juneau.commons.svl.SimpleVar

org.apache.juneau.commons.svl.DefaultingVar

org.apache.juneau.commons.svl.vars.PropertyVar

public class PropertyVar
extends DefaultingVar

Unified property variable resolver.

The format for this var is "$P{propertyName[,defaultValue]}".

Caller-scoped property sources:

Resolution consults the singleton Settings chain by default. Callers (notably the @Value injection path) that need to inject additional, caller-scoped PropertySources in front of the global chain can attach them to the VarResolverSession as a session bean of type PropertySource[]:

session.bean(PropertySource[].class, new PropertySource[] { source1, source2 });

When the session carries that bean, this var consults the array in order between the local/global override stores (which still win — matching the existing test-override contract) and the regular Settings sources chain. Sources earlier in the array take precedence over sources later in the array. The contract is identical to today when no such session bean is attached.

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
PropertyVar()	Constructor.

Method Summary

Modifier and Type	Method	Description
String	resolve(VarResolverSession session, String key)	The interface that needs to be implemented for subclasses of SimpleVar.

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

doResolve

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

resolveTo

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

allowNested, allowRecurse, canResolve, getName, isStable

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

PropertyVar

public PropertyVar()

Constructor.

Method Details

resolve

public String resolve(VarResolverSession session,
 String key)

Description copied from class: Var

The interface that needs to be implemented for subclasses of SimpleVar.

Specified by:

resolve in class Var

Parameters:

session - The session object used for a single instance of a var resolution.

key - The inside argument of the variable.

Returns:

The resolved value.