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Start/Step
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Every
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Just at the time
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Listing
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Examples
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<h1 id="string-format">String format<a class="headerlink" href="#string-format" title="Permanent link">&para;</a></h1>
<p>As in <code>crontab</code> util, this library have almost the same format of string:</p>
<table>
<thead>
<tr>
<th align="right"></th>
<th align="center">Seconds</th>
<th align="center">Minutes</th>
<th align="center">Hours</th>
<th align="center">Days of months</th>
<th align="center">Months</th>
<th align="center">Years</th>
<th align="center">Timezone Offset</th>
<th align="center">Week days</th>
<th align="center">Milliseconds</th>
</tr>
</thead>
<tbody>
<tr>
<td align="right">Range</td>
<td align="center">0..59</td>
<td align="center">0..59</td>
<td align="center">0..23</td>
<td align="center">0..30</td>
<td align="center">0..11</td>
<td align="center">Any <code>Int</code></td>
<td align="center">Any <code>Int</code></td>
<td align="center">0..6</td>
<td align="center">0..999</td>
</tr>
<tr>
<td align="right">Suffix</td>
<td align="center">-</td>
<td align="center">-</td>
<td align="center">-</td>
<td align="center">-</td>
<td align="center">-</td>
<td align="center">-</td>
<td align="center"><code>o</code></td>
<td align="center"><code>w</code></td>
<td align="center"><code>ms</code></td>
</tr>
<tr>
<td align="right">Optional</td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
</tr>
<tr>
<td align="right"><a href="#bkmrk-supported-syntax">Full syntax</a> support</td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
</tr>
<tr>
<td align="right">Position</td>
<td align="center">0</td>
<td align="center">1</td>
<td align="center">2</td>
<td align="center">3</td>
<td align="center">4</td>
<td align="center">Any after months</td>
<td align="center">Any after months</td>
<td align="center">Any after months</td>
<td align="center">Any after months</td>
</tr>
<tr>
<td align="right">Examples</td>
<td align="center"><code>0</code>, <code>*/15</code>, <code>30</code></td>
<td align="center"><code>0</code>, <code>*/15</code>, <code>30</code></td>
<td align="center"><code>0</code>, <code>*/15</code>, <code>22</code></td>
<td align="center"><code>0</code>, <code>*/15</code>, <code>30</code></td>
<td align="center"><code>0</code>, <code>*/5</code>, <code>11</code></td>
<td align="center"><code>0</code>, <code>*/15</code>, <code>30</code></td>
<td align="center"><code>60o</code> (UTC+1)</td>
<td align="center"><code>0w</code>, <code>*/2w</code>, <code>4w</code></td>
<td align="center"><code>0ms</code>, <code>*/150ms</code>, <code>300ms</code></td>
</tr>
</tbody>
</table>
<p>Example with almost same description:</p>
<pre><code>/-------------------- (0-59) ············ Seconds
| /------------------ (0-59) ············ Minutes
| | /---------------- (0-23) ············ Hours
| | | /-------------- (0-30) ············ Days of months
| | | | /------------ (0-11) ············ Months
| | | | | /---------- (optional, any int) Year
| | | | | | /-------- (optional) ········ Timezone offset
| | | | | | | /----- (optional, 0-6) ··· Week days
| | | | | | | | /-- (optional, 0-999) · Milliseconds (0 by default)
* * * * * * 0o *w 0ms
</code></pre>
<p>Years, timezone, week days and milliseconds are optional settings. Next snippets are equal:</p>
<pre><code>*/15 * * * *
*/15 * * * * * // with year
*/15 * * * * * 0ms // with year and milliseconds
</code></pre>
<h3 id="supported-syntax">Supported syntax<a class="headerlink" href="#supported-syntax" title="Permanent link">&para;</a></h3>
<p>Currently the library support next syntax for date/time elements:</p>
<ul>
<li><code>{int}-{int}</code> - ranges</li>
<li><code>{int}/{int}</code> - start/step</li>
<li><code>*/{int}</code> - every {int}</li>
<li><code>{int}</code> - just at the time</li>
<li><code>{other_element},{other_element}</code> - listing</li>
<li><code>F</code> or <code>f</code> - first possible value</li>
<li><code>L</code> or <code>l</code> - last possible value (last day of month, for example)</li>
</ul>
<h4 id="ranges">Ranges<a class="headerlink" href="#ranges" title="Permanent link">&para;</a></h4>
<p>Ranges are working like common <code>rangeTo</code> (or <code>..</code>) in kotlin:</p>
<pre><code>0-5 * * * *
</code></pre>
<p>In the example above scheduler will trigger every second from the beginning of the minute up to fifth second of minute.</p>
<h4 id="startstep">Start/Step<a class="headerlink" href="#startstep" title="Permanent link">&para;</a></h4>
<p>Start/step is a little bit more complicated syntax. It means <code>start from the first element, repeat triggering every second element</code>. Examples:</p>
<pre><code>5/15 * * * *
</code></pre>
<p>Means that each minute starting from fifth second it will repeat triggering every fifteenth second: <code>5, 20, 35, 50</code>.</p>
<h4 id="every">Every<a class="headerlink" href="#every" title="Permanent link">&para;</a></h4>
<p>Every is more simple syntax and could be explained as a shortcut for <code>0/{int}</code>. Example:</p>
<pre><code>*/15 * * * *
</code></pre>
<p>Means that each minute it will repeat triggering every fifteenth second: <code>0, 15, 30, 45</code>.</p>
<h4 id="just-at-the-time">Just at the time<a class="headerlink" href="#just-at-the-time" title="Permanent link">&para;</a></h4>
<p>The most simple syntax. It means, that scheduler will call triggering every time when element was reached:</p>
<pre><code>15 * * * *
</code></pre>
<p>Means that each minute scheduler will call triggering at the fifteenth second.</p>
<h4 id="listing">Listing<a class="headerlink" href="#listing" title="Permanent link">&para;</a></h4>
<p>All the previous elements can be combined with listing. Lets just see several examples:</p>
<pre><code>0,10 * * * *
</code></pre>
<p>Will trigger every minute at the <code>0</code> and <code>10</code> seconds (see <a href="#just-at-the-time">Just at the time</a>)</p>
<pre><code>0-5,10 * * * *
</code></pre>
<p>Will trigger every minute from <code>0</code> to <code>5</code> seconds and at the <code>10</code> seconds (see <a href="#ranges">Ranges</a>)</p>
<h3 id="examples">Examples<a class="headerlink" href="#examples" title="Permanent link">&para;</a></h3>
<ul>
<li><code>0/5 * * * *</code> for every five seconds triggering</li>
<li><code>0/5,L * * * *</code> for every five seconds triggering and on 59 second</li>
<li><code>0/15 30 * * *</code> for every 15th seconds in a half of each hour</li>
<li><code>0/15 30 * * * 500ms</code> for every 15th seconds in a half of each hour when milliseconds equal to 500</li>
<li><code>1 2 3 F,4,L 5</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may</li>
<li><code>1 2 3 F,4,L 5 60o</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may with timezone UTC+01:00</li>
<li><code>1 2 3 F,4,L 5 60o 0-2w</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may in case if it will be in Sunday-Tuesday week days with timezone UTC+01:00</li>
<li><code>1 2 3 F,4,L 5 2021</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may of 2021st year</li>
<li><code>1 2 3 F,4,L 5 2021 60o</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may of 2021st year with timezone UTC+01:00</li>
<li><code>1 2 3 F,4,L 5 2021 60o 0-2w</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may of 2021st year if it will be in Sunday-Tuesday week days with timezone UTC+01:00</li>
<li><code>1 2 3 F,4,L 5 2021 60o 0-2w 500ms</code> for triggering in near first second of second minute of third hour of first, fifth and last days of may of 2021st year if it will be in Sunday-Tuesday week days with timezone UTC+01:00 when milliseconds will be equal to 500</li>
</ul>
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