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ForwardCursor
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com.sleepycat.persist</FONT>
<BR>
Interface ForwardCursor<V></H2>
<DL>
<DT><B>All Superinterfaces:</B> <DD>java.lang.Iterable<V></DD>
</DL>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../com/sleepycat/persist/EntityCursor.html" title="interface in com.sleepycat.persist">EntityCursor</A><V></DD>
</DL>
<HR>
<DL>
<DT><PRE>public interface <B>ForwardCursor<V></B><DT>extends java.lang.Iterable<V></DL>
</PRE>
<P>
Cursor operations limited to traversing forward. See <A HREF="../../../com/sleepycat/persist/EntityCursor.html" title="interface in com.sleepycat.persist"><CODE>EntityCursor</CODE></A>
for general information on cursors.
<p><code>ForwardCursor</code> objects are <em>not</em> thread-safe. Cursors
should be opened, used and closed by a single thread.</p>
<p><em>WARNING:</em> Cursors must always be closed to prevent resource leaks
which could lead to the index becoming unusable or cause an
<code>OutOfMemoryError</code>. To ensure that a cursor is closed in the
face of exceptions, close it in a finally block.</p>
<P>
<P>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/persist/ForwardCursor.html#close()">close</A></B>()</CODE>
<BR>
Closes the cursor.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Iterator<<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/persist/ForwardCursor.html#iterator()">iterator</A></B>()</CODE>
<BR>
Returns an iterator over the key range, starting with the value
following the current position or at the first value if the cursor is
uninitialized.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Iterator<<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/persist/ForwardCursor.html#iterator(com.sleepycat.db.LockMode)">iterator</A></B>(<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</CODE>
<BR>
Returns an iterator over the key range, starting with the value
following the current position or at the first value if the cursor is
uninitialized.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/persist/ForwardCursor.html#next()">next</A></B>()</CODE>
<BR>
Moves the cursor to the next value and returns it, or returns null
if there are no more values in the cursor range.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/persist/ForwardCursor.html#next(com.sleepycat.db.LockMode)">next</A></B>(<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</CODE>
<BR>
Moves the cursor to the next value and returns it, or returns null
if there are no more values in the cursor range.</TD>
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<A NAME="next()"><!-- --></A><H3>
next</H3>
<PRE>
<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A> <B>next</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Moves the cursor to the next value and returns it, or returns null
if there are no more values in the cursor range. If the cursor is
uninitialized, this method returns the first value.
<p><A HREF="../../../com/sleepycat/db/LockMode.html#DEFAULT"><CODE>LockMode.DEFAULT</CODE></A> is used implicitly.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the next value, or null if there are no more values in the
cursor range.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="next(com.sleepycat.db.LockMode)"><!-- --></A><H3>
next</H3>
<PRE>
<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A> <B>next</B>(<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Moves the cursor to the next value and returns it, or returns null
if there are no more values in the cursor range. If the cursor is
uninitialized, this method returns the first value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockMode</CODE> - the lock mode to use for this operation, or null to
use <A HREF="../../../com/sleepycat/db/LockMode.html#DEFAULT"><CODE>LockMode.DEFAULT</CODE></A>.
<DT><B>Returns:</B><DD>the next value, or null if there are no more values in the
cursor range.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="iterator()"><!-- --></A><H3>
iterator</H3>
<PRE>
java.util.Iterator<<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A>> <B>iterator</B>()</PRE>
<DL>
<DD>Returns an iterator over the key range, starting with the value
following the current position or at the first value if the cursor is
uninitialized.
<p><A HREF="../../../com/sleepycat/db/LockMode.html#DEFAULT"><CODE>LockMode.DEFAULT</CODE></A> is used implicitly.</p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>iterator</CODE> in interface <CODE>java.lang.Iterable<<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A>></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the iterator.</DL>
</DD>
</DL>
<HR>
<A NAME="iterator(com.sleepycat.db.LockMode)"><!-- --></A><H3>
iterator</H3>
<PRE>
java.util.Iterator<<A HREF="../../../com/sleepycat/persist/ForwardCursor.html" title="type parameter in ForwardCursor">V</A>> <B>iterator</B>(<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</PRE>
<DL>
<DD>Returns an iterator over the key range, starting with the value
following the current position or at the first value if the cursor is
uninitialized.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lockMode</CODE> - the lock mode to use for all operations performed
using the iterator, or null to use <A HREF="../../../com/sleepycat/db/LockMode.html#DEFAULT"><CODE>LockMode.DEFAULT</CODE></A>.
<DT><B>Returns:</B><DD>the iterator.</DL>
</DD>
</DL>
<HR>
<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
void <B>close</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Closes the cursor.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL>
</DD>
</DL>
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