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StoredIterator (Sleepycat Software, Inc. - Berkeley DB Java API)
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com.sleepycat.bdb.collection</FONT>
<BR>
Class StoredIterator</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">java.lang.Object</A>
|
+--<B>com.sleepycat.bdb.collection.StoredIterator</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Cloneable.html">Cloneable</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html">Iterator</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></DD>
</DL>
<HR>
<DL>
<DT>public class <B>StoredIterator</B><DT>extends <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A><DT>implements <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Cloneable.html">Cloneable</A></DL>
<P>
The Iterator returned by all stored collections.
<p>While in general this class conforms to the <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html"><CODE>Iterator</CODE></A> interface,
it is important to note that all iterators for stored collections must be
explicitly closed with <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()"><CODE>close()</CODE></A>. The static method <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close(java.util.Iterator)"><CODE>close(java.util.Iterator)</CODE></A> allows calling close for all iterators without
harm to iterators that are not from stored collections, and also avoids
casting. If a stored iterator is not closed, unpredictable behavior
including process death may result.</p>
<p>This class implements the <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html"><CODE>Iterator</CODE></A> interface for all stored
iterators. It also implements <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html"><CODE>ListIterator</CODE></A> because some list
iterator methods apply to all stored iterators, for example, <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#previous()"><CODE>previous()</CODE></A> and <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#hasPrevious()"><CODE>hasPrevious()</CODE></A>. Other list iterator methods are always
supports for lists, but for other types of collections are only supported
under certain conditions. For example, <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#nextIndex()"><CODE>nextIndex()</CODE></A> and <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#previousIndex()"><CODE>previousIndex()</CODE></A> are only supported when record number keys are used, while
<A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#add(java.lang.Object)"><CODE>add(java.lang.Object)</CODE></A> and <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#set(java.lang.Object)"><CODE>set(java.lang.Object)</CODE></A> are supported only under certain other
conditions. See the individual method descriptions for more
information.</p>
<p>In addition, this class provides the following methods for stored
collection iterators only. Note that the use of these methods is not
compatible with the standard Java collections interface.</p>
<ul>
<li><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()"><CODE>close()</CODE></A></li>
<li><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close(java.util.Iterator)"><CODE>close(Iterator)</CODE></A></li>
<li><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#getCollection()"><CODE>getCollection()</CODE></A></li>
</ul>
<P>
<P>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Summary</B></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#add(java.lang.Object)">add</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
<BR>
Inserts the specified element into the list or inserts a duplicate into
other types of collections (optional operation).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()">close</A></B>()</CODE>
<BR>
Closes this iterator.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close(java.util.Iterator)">close</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html">Iterator</A> i)</CODE>
<BR>
Closes the given iterator using <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()"><CODE>close()</CODE></A> if it is a <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html"><CODE>StoredIterator</CODE></A>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#count()">count</A></B>()</CODE>
<BR>
Returns the number of elements having the same key value as the key
value of the element last returned by next() or previous().</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/sleepycat/bdb/collection/StoredCollection.html">StoredCollection</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#getCollection()">getCollection</A></B>()</CODE>
<BR>
Returns the collection associated with this iterator.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#getLockForWrite()">getLockForWrite</A></B>()</CODE>
<BR>
Returns whether write-locks will be obtained when reading with this
cursor.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#hasNext()">hasNext</A></B>()</CODE>
<BR>
Returns true if this iterator has more elements when traversing in the
forward direction.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#hasPrevious()">hasPrevious</A></B>()</CODE>
<BR>
Returns true if this iterator has more elements when traversing in the
reverse direction.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#next()">next</A></B>()</CODE>
<BR>
Returns the next element in the interation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#nextIndex()">nextIndex</A></B>()</CODE>
<BR>
Returns the index of the element that would be returned by a subsequent
call to next.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#previous()">previous</A></B>()</CODE>
<BR>
Returns the next element in the interation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#previousIndex()">previousIndex</A></B>()</CODE>
<BR>
Returns the index of the element that would be returned by a subsequent
call to previous.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#remove()">remove</A></B>()</CODE>
<BR>
Removes the last element that was returned by next or previous (optional
operation).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#set(java.lang.Object)">set</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> value)</CODE>
<BR>
Replaces the last element returned by next or previous with the
specified element (optional operation).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#setLockForWrite(boolean)">setLockForWrite</A></B>(boolean lockForWrite)</CODE>
<BR>
Changes whether write-locks will be obtained when reading with this
cursor.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#getClass()">getClass</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notify()">notify</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#toString()">toString</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait()">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long)">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
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<A NAME="method_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="close(java.util.Iterator)"><!-- --></A><H3>
close</H3>
<PRE>
public static void <B>close</B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html">Iterator</A> i)</PRE>
<DL>
<DD>Closes the given iterator using <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()"><CODE>close()</CODE></A> if it is a <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html"><CODE>StoredIterator</CODE></A>. If the given iterator is not a <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html"><CODE>StoredIterator</CODE></A>,
this method does nothing.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - is the iterator to close.
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="getLockForWrite()"><!-- --></A><H3>
getLockForWrite</H3>
<PRE>
public final boolean <B>getLockForWrite</B>()</PRE>
<DL>
<DD>Returns whether write-locks will be obtained when reading with this
cursor.
Obtaining write-locks can prevent deadlocks when reading and then
modifying data.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the write-lock setting.</DL>
</DD>
</DL>
<HR>
<A NAME="setLockForWrite(boolean)"><!-- --></A><H3>
setLockForWrite</H3>
<PRE>
public void <B>setLockForWrite</B>(boolean lockForWrite)</PRE>
<DL>
<DD>Changes whether write-locks will be obtained when reading with this
cursor.
Obtaining write-locks can prevent deadlocks when reading and then
modifying data.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockForWrite</CODE> - the write-lock setting.</DL>
</DD>
</DL>
<HR>
<A NAME="hasNext()"><!-- --></A><H3>
hasNext</H3>
<PRE>
public boolean <B>hasNext</B>()</PRE>
<DL>
<DD>Returns true if this iterator has more elements when traversing in the
forward direction. False is returned if the iterator has been closed.
This method conforms to the <CODE>Iterator.hasNext()</CODE> interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>hasNext</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>whether <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#next()"><CODE>next()</CODE></A> will succeed.
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="hasPrevious()"><!-- --></A><H3>
hasPrevious</H3>
<PRE>
public boolean <B>hasPrevious</B>()</PRE>
<DL>
<DD>Returns true if this iterator has more elements when traversing in the
reverse direction. It returns false if the iterator has been closed.
This method conforms to the <CODE>ListIterator.hasPrevious()</CODE> interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>hasPrevious</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>whether <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#previous()"><CODE>previous()</CODE></A> will succeed.
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="next()"><!-- --></A><H3>
next</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> <B>next</B>()</PRE>
<DL>
<DD>Returns the next element in the interation.
This method conforms to the <CODE>Iterator.next()</CODE> interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>next</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the next element.
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="previous()"><!-- --></A><H3>
previous</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> <B>previous</B>()</PRE>
<DL>
<DD>Returns the next element in the interation.
This method conforms to the <CODE>ListIterator.previous()</CODE> interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>previous</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the previous element.
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="nextIndex()"><!-- --></A><H3>
nextIndex</H3>
<PRE>
public int <B>nextIndex</B>()</PRE>
<DL>
<DD>Returns the index of the element that would be returned by a subsequent
call to next.
This method conforms to the <CODE>ListIterator.nextIndex()</CODE> interface
except that it returns Integer.MAX_VALUE for stored lists when
positioned at the end of the list, rather than returning the list size
as specified by the ListIterator interface. This is because the database
size is not available.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>nextIndex</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the next index.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A></CODE> - if this iterator's collection does
not use record number keys.
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="previousIndex()"><!-- --></A><H3>
previousIndex</H3>
<PRE>
public int <B>previousIndex</B>()</PRE>
<DL>
<DD>Returns the index of the element that would be returned by a subsequent
call to previous.
This method conforms to the <CODE>ListIterator.previousIndex()</CODE>
interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>previousIndex</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the previous index.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A></CODE> - if this iterator's collection does
not use record number keys.
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="set(java.lang.Object)"><!-- --></A><H3>
set</H3>
<PRE>
public void <B>set</B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> value)</PRE>
<DL>
<DD>Replaces the last element returned by next or previous with the
specified element (optional operation).
This method conforms to the <CODE>ListIterator.set(java.lang.Object)</CODE> interface.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>set</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the new value.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A></CODE> - if the collection is a <A HREF="../../../../com/sleepycat/bdb/collection/StoredKeySet.html"><CODE>StoredKeySet</CODE></A> (the set returned by <CODE>Map.keySet()</CODE>), or if duplicates
are sorted since this would change the iterator position, or if
the collection is indexed, or if the collection is read-only.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if an entity value binding is used and
the primary key of the value given is different than the existing stored
primary key.
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="remove()"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>()</PRE>
<DL>
<DD>Removes the last element that was returned by next or previous (optional
operation).
This method conforms to the <CODE>ListIterator.remove()</CODE> interface except
that when the collection is a list and the RECNO-RENUMBER access method
is not used, list indices will not be renumbered.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>remove</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A></CODE> - if the collection is a sublist, or
if the collection is read-only.
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="add(java.lang.Object)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A> value)</PRE>
<DL>
<DD>Inserts the specified element into the list or inserts a duplicate into
other types of collections (optional operation).
This method conforms to the <CODE>ListIterator.add(java.lang.Object)</CODE> interface when
the collection is a list and the RECNO-RENUMBER access method is used.
Otherwise, this method may only be called when duplicates are allowed.
If duplicates are unsorted, the new value will be inserted in the same
manner as list elements.
If duplicates are sorted, the new value will be inserted in sort order.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>add</CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html">ListIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the new value.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A></CODE> - if the collection is a sublist, or
if the collection is indexed, or if the collection is read-only, or if
the collection is a list and the RECNO-RENUMBER access method was not
used, or if the collection is not a list and duplicates are not allowed.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - if the collection is empty and is not a
list with RECNO-RENUMBER access.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if a duplicate value is being added
that already exists and duplicates are sorted.
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="count()"><!-- --></A><H3>
count</H3>
<PRE>
public int <B>count</B>()</PRE>
<DL>
<DD>Returns the number of elements having the same key value as the key
value of the element last returned by next() or previous(). If no
duplicates are allowed, 1 is always returned.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the number of duplicates.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - if next() or previous() has not been
called for this iterator, or if remove() or add() were called after
the last call to next() or previous().</DL>
</DD>
</DL>
<HR>
<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD>Closes this iterator.
This method does not exist in the standard <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html"><CODE>Iterator</CODE></A> or <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html"><CODE>ListIterator</CODE></A> interfaces.
<p>After being closed, only the <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#hasNext()"><CODE>hasNext()</CODE></A> and <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#hasPrevious()"><CODE>hasPrevious()</CODE></A> methods may be called and these will return false. <A HREF="../../../../com/sleepycat/bdb/collection/StoredIterator.html#close()"><CODE>close()</CODE></A> may also be called again and will do nothing. If other
methods are called a <code>NullPointerException</code> will generally be
thrown.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE>RuntimeExceptionWrapper</CODE> - if a <A HREF="../../../../com/sleepycat/db/DbException.html"><CODE>DbException</CODE></A> is thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="getCollection()"><!-- --></A><H3>
getCollection</H3>
<PRE>
public final <A HREF="../../../../com/sleepycat/bdb/collection/StoredCollection.html">StoredCollection</A> <B>getCollection</B>()</PRE>
<DL>
<DD>Returns the collection associated with this iterator.
This method does not exist in the standard <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html"><CODE>Iterator</CODE></A> or <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/ListIterator.html"><CODE>ListIterator</CODE></A> interfaces.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the collection associated with this iterator.</DL>
</DD>
</DL>
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