Package org.springframework.expression.spel.support

Class StandardTypeLocator

java.lang.Object
org.springframework.expression.spel.support.StandardTypeLocator
All Implemented Interfaces:
TypeLocator
public class StandardTypeLocator extends Object implements TypeLocator
A simple implementation of TypeLocator that uses the context ClassLoader (or any ClassLoader set upon it). It supports 'well-known' packages: So if a type cannot be found, it will try the registered imports to locate it.
Since:
3.0
Author:
Andy Clement, Juergen Hoeller

  • Constructor Details

    • StandardTypeLocator

      public StandardTypeLocator()
      Create a StandardTypeLocator for the default ClassLoader (typically, the thread context ClassLoader).

    • StandardTypeLocator

      public StandardTypeLocator(@Nullable ClassLoader classLoader)
      Create a StandardTypeLocator for the given ClassLoader.
      Parameters:
      classLoader - the ClassLoader to delegate to

  • Method Details

    • registerImport

      public void registerImport(String prefix)
      Register a new import prefix that will be used when searching for unqualified types. Expected format is something like "java.lang".
      Parameters:
      prefix - the prefix to register

    • removeImport

      public void removeImport(String prefix)
      Remove that specified prefix from this locator's list of imports.
      Parameters:
      prefix - the prefix to remove

    • getImportPrefixes

      public List<String> getImportPrefixes()
      Return a list of all the import prefixes registered with this StandardTypeLocator.
      Returns:
      a list of registered import prefixes

    • findType

      public Class<?> findType(String typeName) throws EvaluationException
      Find a (possibly unqualified) type reference - first using the type name as-is, then trying any registered prefixes if the type name cannot be found.
      Specified by:
      findType in interface TypeLocator
      Parameters:
      typeName - the type to locate
      Returns:
      the class object for the type
      Throws:
      EvaluationException - if the type cannot be found