delegatingrowiterator.html

Axion 是一个小型的

<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/axiondb/Row.html">Row</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#peekPrevious()">peekPrevious</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the value that would be returned by a call to <A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#previous()"><CODE>previous()</CODE></A>,
 if any, but don't update my position.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/axiondb/Row.html">Row</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#previous()">previous</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the previous <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list,
 or throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html"><CODE>NoSuchElementException</CODE></A>
 if no next <code>Row</code> exists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#previousIndex()">previousIndex</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the index of the <A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#previous()"><CODE>previous()</CODE></A> row, if any,
 or -1 if we're add the beginning of the list.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#remove()">remove</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> at the current position in
 my underlying collection, or 
 throw <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/UnsupportedOperationException.html"><CODE>UnsupportedOperationException</CODE></A>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#reset()">reset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Re-initialize this <code>RowIterator</code> to its initial state
 (positioned just before the first <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#set(org.axiondb.Row)">set</A></B>(<A HREF="../../../../org/axiondb/Row.html">Row</A>&nbsp;row)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> at the current position in
 my underlying collection, or 
 throw <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/UnsupportedOperationException.html"><CODE>UnsupportedOperationException</CODE></A>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/axiondb/engine/rowiterators/DelegatingRowIterator.html#setDelegate(org.axiondb.RowIterator)">setDelegate</A></B>(<A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A>&nbsp;delegate)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<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/products/jdk/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/products/jdk/1.3/docs/api/java/lang/Object.html#clone()">clone</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#finalize()">finalize</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#getClass()">getClass</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#notify()">notify</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#toString()">toString</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#wait()">wait</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#wait(long)">wait</A>, <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->


<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="DelegatingRowIterator()"><!-- --></A><H3>
DelegatingRowIterator</H3>
<PRE>
public <B>DelegatingRowIterator</B>()</PRE>
<DL>
</DL>
<HR>

<A NAME="DelegatingRowIterator(org.axiondb.RowIterator)"><!-- --></A><H3>
DelegatingRowIterator</H3>
<PRE>
public <B>DelegatingRowIterator</B>(<A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A>&nbsp;iter)</PRE>
<DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="current()"><!-- --></A><H3>
current</H3>
<PRE>
public <A HREF="../../../../org/axiondb/Row.html">Row</A> <B>current</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns the last <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> returned by 
 me (by <A HREF="../../../../org/axiondb/RowIterator.html#next()"><CODE>RowIterator.next()</CODE></A>, <A HREF="../../../../org/axiondb/RowIterator.html#previous()"><CODE>RowIterator.previous()</CODE></A>,
 <A HREF="../../../../org/axiondb/RowIterator.html#first()"><CODE>RowIterator.first()</CODE></A>, <A HREF="../../../../org/axiondb/RowIterator.html#last()"><CODE>RowIterator.last()</CODE></A>, etc.).<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#current()">current</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>org.axiondb.RowIterator</CODE></DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></CODE> - when no <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> has yet been returned</DL>
</DD>
</DL>
<HR>

<A NAME="hasCurrent()"><!-- --></A><H3>
hasCurrent</H3>
<PRE>
public boolean <B>hasCurrent</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns <code>true</code> if I have a current <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A>. 
 (In other words, returns <code>true</code> iff
 <A HREF="../../../../org/axiondb/RowIterator.html#current()"><CODE>RowIterator.current()</CODE></A> would return a <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> rather than 
 throwing an exception.)<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#hasCurrent()">hasCurrent</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="first()"><!-- --></A><H3>
first</H3>
<PRE>
public <A HREF="../../../../org/axiondb/Row.html">Row</A> <B>first</B>()
          throws <A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns the first <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list,
 positioning the cursor to just before the 
 first <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list.  (In other words, 
 after <code>first</code> is called both 
 <A HREF="../../../../org/axiondb/RowIterator.html#next()"><CODE>RowIterator.next()</CODE></A> and <A HREF="../../../../org/axiondb/RowIterator.html#current()"><CODE>RowIterator.current()</CODE></A> 
 will return the first row in the list.)<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#first()">first</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>org.axiondb.RowIterator</CODE></DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></CODE> - when there is no first <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A><DD><CODE><A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></CODE> - when a problem occurs accessing the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="last()"><!-- --></A><H3>
last</H3>
<PRE>
public <A HREF="../../../../org/axiondb/Row.html">Row</A> <B>last</B>()
         throws <A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns the last <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list,
 positioning the cursor to just after the 
 last <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list.  (In other words, 
 after <code>last</code> is called both 
 <A HREF="../../../../org/axiondb/RowIterator.html#previous()"><CODE>RowIterator.previous()</CODE></A> and <A HREF="../../../../org/axiondb/RowIterator.html#current()"><CODE>RowIterator.current()</CODE></A> 
 will return the last row in the list.)<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#last()">last</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>org.axiondb.RowIterator</CODE></DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></CODE> - when there is no last <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A><DD><CODE><A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></CODE> - when a problem occurs accessing the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="next()"><!-- --></A><H3>
next</H3>
<PRE>
public <A HREF="../../../../org/axiondb/Row.html">Row</A> <B>next</B>()
         throws <A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns the next <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list,
 or throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html"><CODE>NoSuchElementException</CODE></A>
 if no next <code>Row</code> exists.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#next()">next</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>org.axiondb.RowIterator</CODE></DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></CODE> - when there is no next <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A><DD><CODE><A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></CODE> - when a problem occurs accessing the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="previous()"><!-- --></A><H3>
previous</H3>
<PRE>
public <A HREF="../../../../org/axiondb/Row.html">Row</A> <B>previous</B>()
             throws <A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns the previous <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> in the list,
 or throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html"><CODE>NoSuchElementException</CODE></A>
 if no next <code>Row</code> exists.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#previous()">previous</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>org.axiondb.RowIterator</CODE></DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></CODE> - when there is no next <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A><DD><CODE><A HREF="../../../../org/axiondb/AxionException.html">AxionException</A></CODE> - when a problem occurs accessing the <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="hasNext()"><!-- --></A><H3>
hasNext</H3>
<PRE>
public boolean <B>hasNext</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></B></DD>
<DD>Returns <code>true</code> if I have more <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A>s when 
 traversing the list in the forward direction. (In other words, 
 returns <code>true</code> iff <A HREF="../../../../org/axiondb/RowIterator.html#next()"><CODE>RowIterator.next()</CODE></A> would return 
 a <A HREF="../../../../org/axiondb/Row.html"><CODE>Row</CODE></A> rather than throwing an exception.)<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/axiondb/RowIterator.html#hasNext()">hasNext</A></CODE> in interface <CODE><A HREF="../../../../org/axiondb/RowIterator.html">RowIterator</A></CODE></DL>
</DD>