dion 2004/08/19 23:09:05
Modified: jexl/xdocs/reference syntax.xml
Log:
More details
Revision Changes Path
1.5 +67 -16 jakarta-commons/jexl/xdocs/reference/syntax.xml
Index: syntax.xml
===================================================================
RCS file: /home/cvs/jakarta-commons/jexl/xdocs/reference/syntax.xml,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- syntax.xml 20 Aug 2004 05:09:27 -0000 1.4
+++ syntax.xml 20 Aug 2004 06:09:05 -0000 1.5
@@ -26,7 +26,9 @@
This reference is split up into the following sections:
<ol>
<li><a href="#Syntax">Syntax</a></li>
+ <li><a href="#Literals">Literals</a></li>
<li><a href="#Functions">Functions</a></li>
+ <li><a href="#Operators">Operators</a></li>
</ol>
</p>
</section>
@@ -41,6 +43,23 @@
</td>
</tr>
<tr>
+ <td>Identifiers / variables</td>
+ <td>
+ Must start with <code>a-z</code>, <code>A-Z</code>, <code>_</code> or
<code>$</code>.
+ Can then be followed by <code>0-9</code>, <code>a-z</code>,
<code>A-Z</code>, <code>_</code> or <code>$</code>.
+ e.g.
+ <ul>
+ <li>Valid: <code>var1</code>,<code>_a99</code>,<code>$1</code></li>
+ <li>Inalid: <code>9v</code>,<code>!a99</code>,<code>1$</code></li>
+ </ul>
+ </td>
+ </tr>
+ </table>
+ </section>
+ <section name="Literals">
+ <table>
+ <tr><th>Item</th><th>Description</th></tr>
+ <tr>
<td>Integer Literals</td>
<td>1 or more digits from <code>0</code> to <code>9</code></td>
</tr>
@@ -60,22 +79,6 @@
<source>'Hello world'</source> are equivalent.
</td>
</tr>
- <tr>
- <td>Identifiers / variables</td>
- <td>
- Must start with <code>a-z</code>, <code>A-Z</code>, <code>_</code> or
<code>$</code>.
- Can then be followed by <code>0-9</code>, <code>a-z</code>,
<code>A-Z</code>, <code>_</code> or <code>$</code>.
- e.g.
- <ul>
- <li>Valid: <code>var1</code>,<code>_a99</code>,<code>$1</code></li>
- <li>Inalid: <code>9v</code>,<code>!a99</code>,<code>1$</code></li>
- </ul>
- </td>
- </tr>
- <tr>
- <td>Assignment</td>
- <td><source>var1 = var2</source></td>
- </tr>
</table>
</section>
<section name="Functions">
@@ -92,6 +95,54 @@
<li>A collection of size zero</li>
<li>An empty map</li>
</ol>
+ <source>empty(var1)</source>
+ </td>
+ </tr>
+ <tr>
+ <td>size</td>
+ <td>
+ Returns the information about the expression:
+ <ol>
+ <li>Length of an array</li>
+ <li>Size of a List</li>
+ <li>Size of a Map</li>
+ <li>Size of a Set</li>
+ <li>Length of a string</li>
+ </ol>
+ <source>size("Hello")</source> returns 5.
+ </td>
+ </tr>
+ </table>
+ </section>
+ <section name="Operators">
+ <table>
+ <tr><th>Operator</th><th>Description</th></tr>
+ <tr>
+ <td>Assignment</td>
+ <td><source>var1 = var2</source></td>
+ </tr>
+ <tr>
+ <td>Boolean <code>and</code></td>
+ <td>
+ The usual <code>&&</code> operator can be used as well as the
word <code>and</code>, e.g.
+ <source>cond1 and cond2</source> and
+ <source>cond1 && cond2</source> are equivalent
+ </td>
+ </tr>
+ <tr>
+ <td>Boolean <code>or</code></td>
+ <td>
+ The usual <code>||</code> operator can be used as well as the word
<code>or</code>, e.g.
+ <source>cond1 or cond2</source> and
+ <source>cond1 || cond2</source> are equivalent
+ </td>
+ </tr>
+ <tr>
+ <td>Boolean <code>not</code></td>
+ <td>
+ The usual <code>!</code> operator can be used as well as the word
<code>not</code>, e.g.
+ <source>!cond1</source> and
+ <source>not cond1</source> are equivalent
</td>
</tr>
</table>
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