Class TypeConversionHandlerImpl

java.lang.Object
org.apache.velocity.util.introspection.TypeConversionHandlerImpl
All Implemented Interfaces:
TypeConversionHandler

public class TypeConversionHandlerImpl extends Object implements TypeConversionHandler
A conversion handler adds admissible conversions between Java types whenever Velocity introspection has to map VTL methods and property accessors to Java methods. This implementation is the default Conversion Handler for Velocity.
Since:
2.0
Version:
$Id: TypeConversionHandlerImpl.java $
Author:
Claude Brisson
  • Constructor Details

    • TypeConversionHandlerImpl

      public TypeConversionHandlerImpl()
      Constructor
  • Method Details

    • isExplicitlyConvertible

      public boolean isExplicitlyConvertible(Type formal, Class<?> actual, boolean possibleVarArg)
      Check to see if the conversion can be done using an explicit conversion
      Specified by:
      isExplicitlyConvertible in interface TypeConversionHandler
      Parameters:
      formal - expected formal type
      actual - found argument type
      possibleVarArg - whether var arg is possible
      Returns:
      true if actual class can be explicitely converted to expected formal type
      Since:
      2.1
    • getNeededConverter

      public Converter<?> getNeededConverter(Type formal, Class<?> actual)
      Returns the appropriate Converter object needed for an explicit conversion Returns null if no conversion is needed.
      Specified by:
      getNeededConverter in interface TypeConversionHandler
      Parameters:
      formal - expected formal type
      actual - found argument type
      Returns:
      null if no conversion is needed, or the appropriate Converter object
      Since:
      2.1
    • addConverter

      public void addConverter(Type formal, Class<?> actual, Converter<?> converter)
      Add the given converter to the handler.
      Specified by:
      addConverter in interface TypeConversionHandler
      Parameters:
      formal - expected formal type
      actual - provided argument type
      converter - converter
      Since:
      2.1