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<h2 title="Class DateTime" class="title">Class DateTime</h2>
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<li>java.lang.Object</li>
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<pre>public class <span class="strong">DateTime</span>
extends java.lang.Object</pre>
<div class="block">Encapsulates Sybase date/time values and provides conversions to and from
Java classes.</div>
<dl><dt><span class="strong">Version:</span></dt>
<dd>$Id: DateTime.java,v 1.4.2.2 2009-08-20 19:44:04 ickzon Exp $</dd>
<dt><span class="strong">Author:</span></dt>
<dd>Mike Hutchinson</dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#date">date</a></strong></code>
<div class="block">The date component of the server datetime value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) static int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DATE_NOT_USED">DATE_NOT_USED</a></strong></code>
<div class="block">Indicates date value not used.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.sql.Date</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#dateValue">dateValue</a></strong></code>
<div class="block">Cached value of the datetime as a <code>java.sql.Date</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#day">day</a></strong></code>
<div class="block">Unpacked day value.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#hour">hour</a></strong></code>
<div class="block">Unpacked hour value.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#millis">millis</a></strong></code>
<div class="block">Unpacked millisecond value.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#minute">minute</a></strong></code>
<div class="block">Unpacked minute value.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#month">month</a></strong></code>
<div class="block">Unpacked month value.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#second">second</a></strong></code>
<div class="block">Unpacked second value.</div>
</td>
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<td class="colFirst"><code>private java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#stringValue">stringValue</a></strong></code>
<div class="block">Cached value of the datetime as a <code>String</code>.</div>
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<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#time">time</a></strong></code>
<div class="block">The time component of the server datetime value.</div>
</td>
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<td class="colFirst"><code>(package private) static int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#TIME_NOT_USED">TIME_NOT_USED</a></strong></code>
<div class="block">Indicates time value not used.</div>
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<td class="colFirst"><code>private java.sql.Time</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#timeValue">timeValue</a></strong></code>
<div class="block">Cached value of the datetime as a <code>java.sql.Time</code>.</div>
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<td class="colFirst"><code>private java.sql.Timestamp</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#tsValue">tsValue</a></strong></code>
<div class="block">Cached value of the datetime as a <code>java.sql.Timestamp</code>.</div>
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<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#unpacked">unpacked</a></strong></code>
<div class="block">Indicates server datetime values have been unpacked.</div>
</td>
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<td class="colFirst"><code>private short</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#year">year</a></strong></code>
<div class="block">Unpacked year value.</div>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DateTime(java.sql.Date)">DateTime</a></strong>(java.sql.Date d)</code>
<div class="block">Constructs a DateTime object from a <code>java.sql.Date</code>.</div>
</td>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DateTime(int, int)">DateTime</a></strong>(int date,
int time)</code>
<div class="block">Constructs a DateTime object from the two integer components of a
datetime.</div>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DateTime(short, short)">DateTime</a></strong>(short date,
short time)</code>
<div class="block">Constructs a DateTime object from the two short components of a
smalldatetime.</div>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DateTime(java.sql.Time)">DateTime</a></strong>(java.sql.Time t)</code>
<div class="block">Constructs a DateTime object from a <code>java.sql.Time</code>.</div>
</td>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#DateTime(java.sql.Timestamp)">DateTime</a></strong>(java.sql.Timestamp ts)</code>
<div class="block">Constructs a DateTime object from a <code>java.sql.Timestamp</code>.</div>
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<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#getDate()">getDate</a></strong>()</code>
<div class="block">Retrieves the date component of a datetime value.</div>
</td>
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<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#getTime()">getTime</a></strong>()</code>
<div class="block">Retrieves the time component of a datetime value.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#packDate()">packDate</a></strong>()</code>
<div class="block">Converts a calendar date into days since 1900 (Sybase epoch).</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#packTime()">packTime</a></strong>()</code>
<div class="block">Converts separate time components into a datetime time value.</div>
</td>
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<td class="colFirst"><code>java.sql.Date</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#toDate()">toDate</a></strong>()</code>
<div class="block">Retrieves the current datetime value as a Date.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#toObject()">toObject</a></strong>()</code>
<div class="block">Retrieves the current datetime value as a Time, Date or Timestamp.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#toString()">toString</a></strong>()</code>
<div class="block">Retrieves the current datetime value as a String.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.sql.Time</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#toTime()">toTime</a></strong>()</code>
<div class="block">Retrieves the current datetime value as a Time.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.sql.Timestamp</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#toTimestamp()">toTimestamp</a></strong>()</code>
<div class="block">Retrieves the current datetime value as a Timestamp.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/DateTime.html#unpackDateTime()">unpackDateTime</a></strong>()</code>
<div class="block">Converts a Julian datetime from the Sybase epoch of 1900-01-01 to the
equivalent unpacked year/month/day etc.</div>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<h4>DATE_NOT_USED</h4>
<pre>static final int DATE_NOT_USED</pre>
<div class="block">Indicates date value not used.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../constant-values.html#net.sourceforge.jtds.jdbc.DateTime.DATE_NOT_USED">Constant Field Values</a></dd></dl>
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<pre>static final int TIME_NOT_USED</pre>
<div class="block">Indicates time value not used.</div>
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<h4>date</h4>
<pre>private int date</pre>
<div class="block">The date component of the server datetime value.</div>
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<h4>time</h4>
<pre>private int time</pre>
<div class="block">The time component of the server datetime value.</div>
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<h4>year</h4>
<pre>private short year</pre>
<div class="block">Unpacked year value.</div>
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<h4>month</h4>
<pre>private short month</pre>
<div class="block">Unpacked month value.</div>
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<h4>day</h4>
<pre>private short day</pre>
<div class="block">Unpacked day value.</div>
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<h4>hour</h4>
<pre>private short hour</pre>
<div class="block">Unpacked hour value.</div>
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<h4>minute</h4>
<pre>private short minute</pre>
<div class="block">Unpacked minute value.</div>
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<h4>second</h4>
<pre>private short second</pre>
<div class="block">Unpacked second value.</div>
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<h4>millis</h4>
<pre>private short millis</pre>
<div class="block">Unpacked millisecond value.</div>
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<h4>unpacked</h4>
<pre>private boolean unpacked</pre>
<div class="block">Indicates server datetime values have been unpacked.</div>
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<h4>stringValue</h4>
<pre>private java.lang.String stringValue</pre>
<div class="block">Cached value of the datetime as a <code>String</code>.</div>
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<pre>private java.sql.Timestamp tsValue</pre>
<div class="block">Cached value of the datetime as a <code>java.sql.Timestamp</code>.</div>
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<h4>dateValue</h4>
<pre>private java.sql.Date dateValue</pre>
<div class="block">Cached value of the datetime as a <code>java.sql.Date</code>.</div>
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<h4>timeValue</h4>
<pre>private java.sql.Time timeValue</pre>
<div class="block">Cached value of the datetime as a <code>java.sql.Time</code>.</div>
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<h4>DateTime</h4>
<pre>DateTime(int date,
int time)</pre>
<div class="block">Constructs a DateTime object from the two integer components of a
datetime.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>date</code> - server date field</dd><dd><code>time</code> - server time field</dd></dl>
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<h4>DateTime</h4>
<pre>DateTime(short date,
short time)</pre>
<div class="block">Constructs a DateTime object from the two short components of a
smalldatetime.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>date</code> - server date field</dd><dd><code>time</code> - server time field</dd></dl>
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<pre>DateTime(java.sql.Timestamp ts)
throws java.sql.SQLException</pre>
<div class="block">Constructs a DateTime object from a <code>java.sql.Timestamp</code>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>ts</code> - <code>Timestamp</code> object representing the datetime</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.sql.SQLException</code> - if the date is out of range</dd></dl>
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<pre>DateTime(java.sql.Time t)
throws java.sql.SQLException</pre>
<div class="block">Constructs a DateTime object from a <code>java.sql.Time</code>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>t</code> - <code>Time</code> object representing the datetime</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.sql.SQLException</code> - if the time (date) is out of range</dd></dl>
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<pre>DateTime(java.sql.Date d)
throws java.sql.SQLException</pre>
<div class="block">Constructs a DateTime object from a <code>java.sql.Date</code>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - <code>Date</code> object representing the datetime</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.sql.SQLException</code> - if the Date is out of range</dd></dl>
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<h4>getDate</h4>
<pre>int getDate()</pre>
<div class="block">Retrieves the date component of a datetime value.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the datetime date component as an <code>int</code></dd></dl>
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<h4>getTime</h4>
<pre>int getTime()</pre>
<div class="block">Retrieves the time component of a datetime value.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the datetime time component as an <code>int</code></dd></dl>
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<h4>unpackDateTime</h4>
<pre>private void unpackDateTime()</pre>
<div class="block">Converts a Julian datetime from the Sybase epoch of 1900-01-01 to the
equivalent unpacked year/month/day etc.
Algorithm from Fliegel, H F and van Flandern, T C (1968).
Communications of the ACM, Vol 11, No 10 (October, 1968).
<pre>
SUBROUTINE GDATE (JD, YEAR,MONTH,DAY)
C
C---COMPUTES THE GREGORIAN CALENDAR DATE (YEAR,MONTH,DAY)
C GIVEN THE JULIAN DATE (JD).
C
INTEGER JD,YEAR,MONTH,DAY,I,J,K
C
L= JD+68569
N= 4*L/146097
L= L-(146097*N+3)/4
I= 4000*(L+1)/1461001
L= L-1461*I/4+31
J= 80*L/2447
K= L-2447*J/80
L= J/11
J= J+2-12*L
I= 100*(N-49)+I+L
C
YEAR= I
MONTH= J
DAY= K
C
RETURN
END
</pre></div>
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<h4>packDate</h4>
<pre>public void packDate()
throws java.sql.SQLException</pre>
<div class="block">Converts a calendar date into days since 1900 (Sybase epoch).
<p>
Algorithm from Fliegel, H F and van Flandern, T C (1968).
Communications of the ACM, Vol 11, No 10 (October, 1968).
<pre>
INTEGER FUNCTION JD (YEAR,MONTH,DAY)
C
C---COMPUTES THE JULIAN DATE (JD) GIVEN A GREGORIAN CALENDAR
C DATE (YEAR,MONTH,DAY).
C
INTEGER YEAR,MONTH,DAY,I,J,K
C
I= YEAR
J= MONTH
K= DAY
C
JD= K-32075+1461*(I+4800+(J-14)/12)/4+367*(J-2-(J-14)/12*12)
2 /12-3*((I+4900+(J-14)/12)/100)/4
C
RETURN
END
</pre></div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.sql.SQLException</code> - if the date is outside the accepted range, 1753-9999</dd></dl>
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<h4>packTime</h4>
<pre>public void packTime()</pre>
<div class="block">Converts separate time components into a datetime time value.</div>
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<a name="toTimestamp()">
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<h4>toTimestamp</h4>
<pre>public java.sql.Timestamp toTimestamp()</pre>
<div class="block">Retrieves the current datetime value as a Timestamp.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the current datetime value as a <code>java.sql.Timestamp</code></dd></dl>
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<a name="toDate()">
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<h4>toDate</h4>
<pre>public java.sql.Date toDate()</pre>
<div class="block">Retrieves the current datetime value as a Date.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the current datetime value as a <code>java.sql.Date</code></dd></dl>
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<h4>toTime</h4>
<pre>public java.sql.Time toTime()</pre>
<div class="block">Retrieves the current datetime value as a Time.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the current datetime value as a <code>java.sql.Time</code></dd></dl>
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<a name="toObject()">
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<h4>toObject</h4>
<pre>public java.lang.Object toObject()</pre>
<div class="block">Retrieves the current datetime value as a Time, Date or Timestamp.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the current datetime value as an <code>java.lang.Object</code></dd></dl>
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<h4>toString</h4>
<pre>public java.lang.String toString()</pre>
<div class="block">Retrieves the current datetime value as a String.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code>toString</code> in class <code>java.lang.Object</code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the current datetime value as a <code>String</code></dd></dl>
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</li>
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