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Java Source Code / Java Documentation » Library » Tapestry » org.apache.tapestry.ioc.internal.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.tapestry.ioc.internal.util.InheritanceSearch

InheritanceSearch
public class InheritanceSearch implements Iterator<Class>,Iterable<Class>(Code)
Used to search from a particular class up the inheritance hierarchy of extended classes and implemented interfaces.

The search starts with the initial class (provided in the constructor). It progresses up the inheritance chain, but skips java.lang.Object.

Once classes are exhausted, the inheritance hiearchy is searched. This is a breadth-first search, rooted in the interfaces implemented by the initial class at its super classes.

Once all interfaces are exhausted, java.lang.Object is returned (it is always returned last).

Two minor tweak to normal inheritance rules:

  • Normally, the parent class of an object array is java.lang.Object, which is odd because Foo[] is assignable to Object[]. Thus, we tweak the search so that the effective super class of Foo[] is Object[].
  • The "super class" of a primtive type is its wrapper type, with the exception of void, whose "super class" is left at its normal value (Object.class)

This class implements the Iterable interface, so it can be used directly in a for loop: for (Class search : new InheritanceSearch(startClass)) { ... }

This class is not threadsafe.




Constructor Summary
public  InheritanceSearch(Class searchClass)
    

Method Summary
public  booleanhasNext()
    
public  Iterator<Class>iterator()
    
public  Classnext()
    
public  voidremove()
    


Constructor Detail
InheritanceSearch
public InheritanceSearch(Class searchClass)(Code)




Method Detail
hasNext
public boolean hasNext()(Code)



iterator
public Iterator<Class> iterator()(Code)



next
public Class next()(Code)



remove
public void remove()(Code)

throws:
  UnsupportedOperationException - always



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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