org.apache.qpid.jms.util

Class VariableExpansion

java.lang.Object

org.apache.qpid.jms.util.VariableExpansion

public final class VariableExpansion
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VariableExpansion.MapResolver
static interface	VariableExpansion.Resolver
static class	VariableExpansion.UnresolvedVariableException

Field Summary

Fields

Modifier and Type	Field and Description
static VariableExpansion.Resolver	ENV_VAR_RESOLVER
static VariableExpansion.Resolver	SYS_PROP_RESOLVER

Method Summary

Modifier and Type	Method and Description
static String	expand(String input, VariableExpansion.Resolver resolver) Expands any variables found in the given input string.

Methods inherited from class java.lang.Object

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

Field Detail

ENV_VAR_RESOLVER

public static final VariableExpansion.Resolver ENV_VAR_RESOLVER

SYS_PROP_RESOLVER

public static final VariableExpansion.Resolver SYS_PROP_RESOLVER

Method Detail

expand

public static final String expand(String input,
                                  VariableExpansion.Resolver resolver)
                           throws VariableExpansion.UnresolvedVariableException,
                                  IllegalArgumentException,
                                  NullPointerException

Expands any variables found in the given input string.

Parameters:

input - the string to expand any variables in

resolver - the resolver to use

Returns:

the expanded output

Throws:

VariableExpansion.UnresolvedVariableException - If a variable without a default can't be expanded because it (or indirectly its value) is not resolvable.

IllegalArgumentException - if an argument can't be expanded due to other issue with the input.

NullPointerException - if a resolver is not supplied