SymbolSource (Tapestry API - 5.7.2)

All Known Implementing Classes:

SymbolSourceImpl
```
@UsesOrderedConfiguration(SymbolProvider.class)
public interface SymbolSource
```
Used to manage symbols, configuration properties whose value is evaluated at runtime. Symbols use the Ant syntax: ${foo.bar.baz} where foo.bar.baz is the name of the symbol. The symbol may appear inside some annotation, such as Value. The SymbolSource service configuration is an ordered list of SymbolProviders. Two key SymbolProvider services are FactoryDefaults and ApplicationDefaults.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
	`input)`	Given an input string that may contain symbols, returns the string with any and all symbols fully expanded.
	`symbolName)`	Expands the value for a particular symbol.

- Method Detail
  - valueForSymbol
```
  symbolName)
```
    Expands the value for a particular symbol. This may involve recursive expansion, if the immediate value for the symbol itself contains symbols.
    
    Parameters:
    
    symbolName -
    
    Returns:
    
    the expanded string
    
    Throws:
    
    - if the symbol name can not be expanded (no SymbolProvider can provide its value), or if an expansion is directly or indirectly recursive
  - expandSymbols
```
  input)
```
    Given an input string that may contain symbols, returns the string with any and all symbols fully expanded.
    
    Parameters:
    
    input -
    
    Returns:
    
    expanded input