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Oracle® Coherence Java API Reference
Release 3.7.0.0

E18683-01


com.tangosol.util
Class FilterEnumerator

java.lang.Object
  extended by com.tangosol.util.Base
      extended by com.tangosol.util.FilterEnumerator

All Implemented Interfaces:
java.util.Enumeration, java.util.Iterator

public class FilterEnumerator
extends Base
implements java.util.Enumeration, java.util.Iterator

Provide a generic implementation of an enumerator which can enumerate items based on an inclusion test.

Author:
cp 1997.09.05, cp 1998.08.07

Field Summary
protected  boolean m_fNext
          Is there a next item which passed the test?
protected  boolean m_fPrev
          Is there a previous item which passed the test and can be removed?
protected  java.util.Iterator m_iter
          Objects to filter/enumerate.
protected  java.lang.Object m_oNext
          The next item which passed the test.
protected  Filter m_test
          Test to perform on each item.

 

Constructor Summary
FilterEnumerator(java.util.Enumeration enmr, Filter test)
          Construct the Filter enumerator based on an Enumeration.
FilterEnumerator(java.util.Iterator iter, Filter test)
          Construct the Filter enumerator based on an Iterator.
FilterEnumerator(java.lang.Object[] aoItem, Filter test)
          Construct the Filter enumerator based on an array of objects.

 

Method Summary
 boolean hasMoreElements()
          Tests if this enumeration contains more elements.
 boolean hasNext()
          Tests if this Iterator contains more elements.
 java.lang.Object next()
          Returns the next element of this Iterator.
 java.lang.Object nextElement()
          Get the next element in the enumeration.
 void remove()
          Remove the last-returned element that was returned by the Iterator.

 

Field Detail

m_iter

protected java.util.Iterator m_iter
Objects to filter/enumerate.

m_test

protected Filter m_test
Test to perform on each item.

m_fNext

protected boolean m_fNext
Is there a next item which passed the test?

m_fPrev

protected boolean m_fPrev
Is there a previous item which passed the test and can be removed?

m_oNext

protected java.lang.Object m_oNext
The next item which passed the test.

Constructor Detail

FilterEnumerator

public FilterEnumerator(java.util.Enumeration enmr,
                        Filter test)
Construct the Filter enumerator based on an Enumeration.
Parameters:
enmr - Enumeration of objects to filter
test - an inclusion test

FilterEnumerator

public FilterEnumerator(java.util.Iterator iter,
                        Filter test)
Construct the Filter enumerator based on an Iterator.
Parameters:
iter - Iterator of objects to filter
test - an inclusion test

FilterEnumerator

public FilterEnumerator(java.lang.Object[] aoItem,
                        Filter test)
Construct the Filter enumerator based on an array of objects.
Parameters:
aoItem - array of objects to enumerate
test - an inclusion test

Method Detail

hasMoreElements

public boolean hasMoreElements()
Tests if this enumeration contains more elements.
Specified by:
hasMoreElements in interface java.util.Enumeration
Returns:
false if the enumeration has been exhausted

nextElement

public java.lang.Object nextElement()
Get the next element in the enumeration.
Specified by:
nextElement in interface java.util.Enumeration
Returns:
the next element of this enumeration

hasNext

public boolean hasNext()
Tests if this Iterator contains more elements.
Specified by:
hasNext in interface java.util.Iterator
Returns:
true if the Iterator contains more elements, false otherwise

next

public java.lang.Object next()
Returns the next element of this Iterator.
Specified by:
next in interface java.util.Iterator
Returns:
the next element in the Iterator

remove

public void remove()
Remove the last-returned element that was returned by the Iterator.
Specified by:
remove in interface java.util.Iterator

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Oracle® Coherence Java API Reference
Release 3.7.0.0

E18683-01


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