SymbolProvider (Tapestry API - 5.7.2)

SymbolProvider (Tapestry API - 5.7.2)

All Known Implementing Classes:

ClasspathResourceSymbolProvider, ContextResourceSymbolProvider, DelegatingSymbolProvider, MapSymbolProvider, ResourceSymbolProvider, ServletContextSymbolProvider, SingleKeySymbolProvider, SystemEnvSymbolProvider, SystemPropertiesSymbolProvider
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public interface SymbolProvider
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A provider of values for symbols, used by the SymbolSource service. This is the service interface for the FactoryDefaults and ApplicationDefaults services; each of these takes a configuration mapping symbols to their values.

See Also:

FactoryDefaults, ApplicationDefaults

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  symbolName)
  Returns the value for the symbol, or null if this provider can not provide a value.

- Method Detail
  - valueForSymbol
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  symbolName)
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    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.
    
    Parameters:
    
    symbolName -
    
    Returns:
    
    the value or null