Package org.apache.commons.configuration2.interpol

Class StringLookupAdapter

java.lang.Object

org.apache.commons.configuration2.interpol.StringLookupAdapter

All Implemented Interfaces:

Lookup

final class StringLookupAdapter
extends Object
implements Lookup

Wraps an Apache Commons Text StringLookup as an Apache Commons Configuration Lookup.

Since:

2.4

Field Summary

Fields

Modifier and Type	Field	Description
private final org.apache.commons.text.lookup.StringLookup	stringLookup	The StringLookup delegate.

Constructor Summary

Constructors

Constructor	Description
StringLookupAdapter(org.apache.commons.text.lookup.StringLookup stringLookup)

Method Summary

Modifier and Type	Method	Description
Object	lookup(String key)	Looks up the value of the specified variable.

Methods inherited from class java.lang.Object

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

Field Details

stringLookup

private final org.apache.commons.text.lookup.StringLookup stringLookup

The StringLookup delegate.

Constructor Details

StringLookupAdapter

StringLookupAdapter(org.apache.commons.text.lookup.StringLookup stringLookup)

Method Details

lookup

public Object lookup(String key)

Description copied from interface: Lookup

Looks up the value of the specified variable. This method is called by ConfigurationInterpolator with the variable name extracted from the expression to interpolate (i.e. the prefix name has already been removed). A concrete implementation has to return the value of this variable or null if the variable name is unknown.

Specified by:

lookup in interface Lookup

Parameters:

key - the name of the variable to be resolved

Returns:

the value of this variable or null