org.jboss.dmr

Class ValueExpressionResolver

java.lang.Object

org.jboss.dmr.ValueExpressionResolver

public class ValueExpressionResolver
extends Object

A resolver for value expressions.

Author:

David M. Lloyd

Field Summary

Fields

Modifier and Type	Field and Description
static ValueExpressionResolver	DEFAULT_RESOLVER The default value expression resolver.

Constructor Summary

Constructors

Constructor and Description
ValueExpressionResolver() Construct a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
String	resolve(ValueExpression expression) Perform expression resolution.
protected String	resolvePart(String name) Resolve a single name in the expression.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_RESOLVER

public static final ValueExpressionResolver DEFAULT_RESOLVER

The default value expression resolver.

Constructor Detail

ValueExpressionResolver

public ValueExpressionResolver()

Construct a new instance.

Method Detail

resolve

public String resolve(ValueExpression expression)

Perform expression resolution.

Parameters:

expression - the expression to resolve

Returns:

the resolved string

resolvePart

protected String resolvePart(String name)

Resolve a single name in the expression. Return null if no resolution is possible. The default implementation (which may be delegated to) checks system properties, environment variables, and a small set of special strings.

Parameters:

name - the name to resolve

Returns:

the resolved value, or null for none