rowiterator.html

Axion 是一个小型的

</TABLE>

<A NAME="current()"><!-- --></A><H3>
current</H3>
<PRE>
public <A HREF="../../org/axiondb/Row.html">Row</A> <B>current</B>()
            throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></PRE>
<DL>
<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>next()</CODE></A>, <A HREF="../../org/axiondb/RowIterator.html#previous()"><CODE>previous()</CODE></A>,
 <A HREF="../../org/axiondb/RowIterator.html#first()"><CODE>first()</CODE></A>, <A HREF="../../org/axiondb/RowIterator.html#last()"><CODE>last()</CODE></A>, etc.).<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="next()"><!-- --></A><H3>
next</H3>
<PRE>
public <A HREF="../../org/axiondb/Row.html">Row</A> <B>next</B>()
         throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<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>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="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                    <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<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>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>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>next()</CODE></A> would return 
 a <A HREF="../../org/axiondb/Row.html"><CODE>Row</CODE></A> rather than throwing an exception.)</DL>
<HR>

<A NAME="hasPrevious()"><!-- --></A><H3>
hasPrevious</H3>
<PRE>
public boolean <B>hasPrevious</B>()</PRE>
<DL>
<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 reverse direction. (In other words, 
 returns <code>true</code> iff <A HREF="../../org/axiondb/RowIterator.html#previous()"><CODE>previous()</CODE></A> would return 
 a <A HREF="../../org/axiondb/Row.html"><CODE>Row</CODE></A> rather than throwing an exception.)</DL>
<HR>

<A NAME="hasCurrent()"><!-- --></A><H3>
hasCurrent</H3>
<PRE>
public boolean <B>hasCurrent</B>()</PRE>
<DL>
<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>current()</CODE></A> would return a <A HREF="../../org/axiondb/Row.html"><CODE>Row</CODE></A> rather than 
 throwing an exception.)</DL>
<HR>

<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if there are no rows to report with
 this iterator.</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="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                 <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<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>next()</CODE></A> and <A HREF="../../org/axiondb/RowIterator.html#current()"><CODE>current()</CODE></A> 
 will return the first row in the list.)<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="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<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>previous()</CODE></A> and <A HREF="../../org/axiondb/RowIterator.html#current()"><CODE>current()</CODE></A> 
 will return the last row in the list.)<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="peekNext()"><!-- --></A><H3>
peekNext</H3>
<PRE>
public <A HREF="../../org/axiondb/Row.html">Row</A> <B>peekNext</B>()
             throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                    <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>Return the value that would be returned by a call to <A HREF="../../org/axiondb/RowIterator.html#next()"><CODE>next()</CODE></A>,
 if any, but don't update my position.<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="peekPrevious()"><!-- --></A><H3>
peekPrevious</H3>
<PRE>
public <A HREF="../../org/axiondb/Row.html">Row</A> <B>peekPrevious</B>()
                 throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A>,
                        <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>Return the value that would be returned by a call to <A HREF="../../org/axiondb/RowIterator.html#previous()"><CODE>previous()</CODE></A>,
 if any, but don't update my position.<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 previous <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="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()
           throws <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>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).</DL>
<HR>

<A NAME="add(org.axiondb.Row)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../../org/axiondb/Row.html">Row</A>&nbsp;row)
         throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A>,
                <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>Add a <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>.
 (Optional operation.)</DL>
<HR>

<A NAME="set(org.axiondb.Row)"><!-- --></A><H3>
set</H3>
<PRE>
public void <B>set</B>(<A HREF="../../org/axiondb/Row.html">Row</A>&nbsp;row)
         throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A>,
                <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>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>.
 (Optional operation.)</DL>
<HR>

<A NAME="remove()"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>()
            throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/UnsupportedOperationException.html">UnsupportedOperationException</A>,
                   <A HREF="../../org/axiondb/AxionException.html">AxionException</A></PRE>
<DL>
<DD>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>.
 (Optional operation.)</DL>
<HR>

<A NAME="currentIndex()"><!-- --></A><H3>
currentIndex</H3>
<PRE>
public int <B>currentIndex</B>()
                 throws <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/util/NoSuchElementException.html">NoSuchElementException</A></PRE>
<DL>
<DD>Returns the index of the <A HREF="../../org/axiondb/RowIterator.html#current()"><CODE>current()</CODE></A> row, if any.<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="nextIndex()"><!-- --></A><H3>
nextIndex</H3>
<PRE>
public int <B>nextIndex</B>()</PRE>
<DL>
<DD>Returns the index of the <A HREF="../../org/axiondb/RowIterator.html#next()"><CODE>next()</CODE></A> row, if any, 
 or the number of elements is the iterator if we've
 reached the end.</DL>
<HR>

<A NAME="previousIndex()"><!-- --></A><H3>
previousIndex</H3>
<PRE>
public int <B>previousIndex</B>()</PRE>
<DL>
<DD>Returns the index of the <A HREF="../../org/axiondb/RowIterator.html#previous()"><CODE>previous()</CODE></A> row, if any,
 or -1 if we're add the beginning of the list.</DL>
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