Package 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

  Constructors
  Constructor
  Description
  `SystemEnvSymbolProvider()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `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 Details

  - ### SystemEnvSymbolProvider

    public SystemEnvSymbolProvider()

- ## Method Details

  - ### 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