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

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

All Implemented Interfaces:

SymbolProvider

public class SystemPropertiesSymbolProvider
extends Object
implements SymbolProvider

Obtains symbol values from JVM System properties. This implementation is usually ordered first, so that explicit overrides, provided as JVM system properties, can take effect.

Constructor Summary

SystemPropertiesSymbolProvider()

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

SystemPropertiesSymbolProvider

public SystemPropertiesSymbolProvider()

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