Package javassist

Class ClassMap

java.lang.Object
java.util.AbstractMap<K,V>
java.util.HashMap<String,String>
javassist.ClassMap
All Implemented Interfaces:
Serializable, Cloneable, Map<String,String>
public class ClassMap extends HashMap<String,String>
A hash table associating class names with different names.

This hashtable is used for replacing class names in a class definition or a method body. Define a subclass of this class if a more complex mapping algorithm is needed. For example, 

class MyClassMap extends ClassMap {
   public Object get(Object jvmClassName) {
     String name = toJavaName((String)jvmClassName);
     if (name.startsWith("java."))
         return toJvmName("java2." + name.substring(5));
     else
         return super.get(jvmClassName);
   }
 }

This subclass maps java.lang.String to java2.lang.String. Note that get() receives and returns the internal representation of a class name. For example, the internal representation of java.lang.String is java/lang/String.

Note that this is a map from String to String.

See Also:

  • Constructor Details

    • ClassMap

      public ClassMap()
      Constructs a hash table.

  • Method Details

    • put

      public void put(CtClass oldname, CtClass newname)
      Maps a class name to another name in this hashtable. The names are obtained with calling Class.getName(). This method translates the given class names into the internal form used in the JVM before putting it in the hashtable.
      Parameters:
      oldname - the original class name
      newname - the substituted class name.

    • put

      public String put(String oldname, String newname)
      Maps a class name to another name in this hashtable. If the hashtable contains another mapping from the same class name, the old mapping is replaced. This method translates the given class names into the internal form used in the JVM before putting it in the hashtable.

      If oldname is identical to newname, then this method does not perform anything; it does not record the mapping from oldname to newname. See fix method.

      Specified by:
      put in interface Map<String,String>
      Overrides:
      put in class HashMap<String,String>
      Parameters:
      oldname - the original class name.
      newname - the substituted class name.
      See Also:

    • putIfNone

      public void putIfNone(String oldname, String newname)
      Is equivalent to put() except that the given mapping is not recorded into the hashtable if another mapping from oldname is already included.
      Parameters:
      oldname - the original class name.
      newname - the substituted class name.

    • get

      public String get(Object jvmClassName)
      Returns the class name to wihch the given jvmClassName is mapped. A subclass of this class should override this method.

      This method receives and returns the internal representation of class name used in the JVM.

      Specified by:
      get in interface Map<String,String>
      Overrides:
      get in class HashMap<String,String>
      See Also:

    • fix

      public void fix(CtClass clazz)
      Prevents a mapping from the specified class name to another name.

    • fix

      public void fix(String name)
      Prevents a mapping from the specified class name to another name.

    • toJvmName

      public static String toJvmName(String classname)
      Converts a class name into the internal representation used in the JVM.

    • toJavaName

      public static String toJavaName(String classname)
      Converts a class name from the internal representation used in the JVM to the normal one used in Java.