org.apache.tapestry5.ioc.internal.services
Class SystemEnvSymbolProvider

java.lang.Object
  org.apache.tapestry5.ioc.internal.services.SystemEnvSymbolProvider

All Implemented Interfaces:

SymbolProvider

public class SystemEnvSymbolProvider
extends Object
implements SymbolProvider

Provides case insensitive access to environment variables. Environment variable symbols are prefixed with "env.".

Since:

5.3

Constructor Summary

SystemEnvSymbolProvider()

Method Summary

String

valueForSymbol(String symbolName) Returns the value for the symbol, or null if this provider can not provide a value.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemEnvSymbolProvider

public SystemEnvSymbolProvider()

Method Detail

valueForSymbol

public String valueForSymbol(String symbolName)

Description copied from interface: SymbolProvider

Returns the value for the symbol, or null if this provider can not provide a value. The value itself may contain symbols that will be recursively expanded.

Specified by:

valueForSymbol in interface SymbolProvider

Returns:

the value or null