svn commit: r959183 [2/3] - in /websites/production/camel/content: book-in-one-page.html book-languages-appendix.html cache/main.pageCache simple.html

Wed, 22 Jul 2015 10:21:07 -0700 

Modified: websites/production/camel/content/book-languages-appendix.html
==============================================================================
--- websites/production/camel/content/book-languages-appendix.html (original)
+++ websites/production/camel/content/book-languages-appendix.html Wed Jul 22 
17:20:53 2015
@@ -651,7 +651,7 @@ result = body * 2 + 1
 ]]></script>
 </div></div><p>For example you could use the <strong>groovy</strong> function 
to create an <a shape="rect" href="predicate.html">Predicate</a> in a <a 
shape="rect" href="message-filter.html">Message Filter</a> or as an <a 
shape="rect" href="expression.html">Expression</a> for a <a shape="rect" 
href="recipient-list.html">Recipient List</a></p><h3 
id="BookLanguagesAppendix-CustomizingGroovyShell">Customizing Groovy 
Shell</h3><p>Sometimes you may need to use custom <code>GroovyShell</code> 
instance in your Groovy expressions. To provide custom 
<code>GroovyShell</code>, add implementation of 
the&#160;<code>org.apache.camel.language.groovy.GroovyShellFactory</code> SPI 
interface to your Camel registry. For example after adding the following bean 
to your Spring context...</p><div class="code panel pdl" style="border-width: 
1px;"><div class="codeContent panelContent pdl">
 <script class="brush: java; gutter: false; theme: Default" 
type="syntaxhighlighter"><![CDATA[public class CustomGroovyShellFactory 
implements GroovyShellFactory {
- 
+?
   public GroovyShell createGroovyShell(Exchange exchange) {
     ImportCustomizer importCustomizer = new ImportCustomizer();
     importCustomizer.addStaticStars(&quot;com.example.Utils&quot;);
@@ -932,7 +932,7 @@ result = body * 2 + 1
 &lt;/dependency&gt;
 ]]></script>
 </div></div>
-<h2 id="BookLanguagesAppendix-SimpleExpressionLanguage">Simple Expression 
Language</h2><p>The Simple Expression Language was a really simple language you 
can use, but has since grown more powerful. Its primarily intended for being a 
really small and simple language for evaluating <a shape="rect" 
href="expression.html">Expression</a> and <a shape="rect" 
href="predicate.html">Predicate</a> without requiring any new dependencies or 
knowledge of <a shape="rect" href="xpath.html">XPath</a>; so its ideal for 
testing in camel-core. Its ideal to cover 95% of the common use cases when you 
need a little bit of expression based script in your Camel 
routes.</p><p>However for much more complex use cases you are generally 
recommended to choose a more expressive and powerful language such 
as:</p><ul><li><a shape="rect" href="spel.html">SpEL</a></li><li><a 
shape="rect" href="mvel.html">Mvel</a></li><li><a shape="rect" 
href="groovy.html">Groovy</a></li><li><a shape="rect" 
href="javascript.html">Java
 Script</a></li><li><a shape="rect" href="el.html">EL</a></li><li><a 
shape="rect" href="ognl.html">OGNL</a></li><li>one of the supported <a 
shape="rect" href="scripting-languages.html">Scripting 
Languages</a></li></ul><p>The simple language uses <code>${body</code>} 
placeholders for complex expressions where the expression contains constant 
literals. The ${ } placeholders can be omitted if the expression is only the 
token itself.</p><div class="confluence-information-macro 
confluence-information-macro-tip"><p class="title">Alternative syntax</p><span 
class="aui-icon aui-icon-small aui-iconfont-approve 
confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.5 onwards you can 
also use the alternative syntax which uses $simple{ } as placeholders.<br 
clear="none"> This can be used in situations to avoid clashes when using for 
example Spring property placeholder together with Camel.</p></div></div><div 
class="confluence-information-macro co
 nfluence-information-macro-tip"><p class="title">Configuring result 
type</p><span class="aui-icon aui-icon-small aui-iconfont-approve 
confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.8 onwards you can 
configure the result type of the <a shape="rect" href="simple.html">Simple</a> 
expression. For example to set the type as a <code>java.lang.Boolean</code> or 
a <code>java.lang.Integer</code> etc.</p></div></div><div 
class="confluence-information-macro 
confluence-information-macro-information"><p class="title">File language is now 
merged with Simple language</p><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.2 onwards, the <a 
shape="rect" href="file-language.html">File Language</a> is now merged with <a 
shape="rect" href="simple.html">Simple</a> language which means you can use all 
the file syntax directly within the simp
 le language.</p></div></div><div class="confluence-information-macro 
confluence-information-macro-information"><p class="title">Simple Language 
Changes in Camel 2.9 onwards</p><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>The <a shape="rect" 
href="simple.html">Simple</a> language have been improved from Camel 2.9 
onwards to use a better syntax parser, which can do index precise error 
messages, so you know exactly what is wrong and where the problem is. For 
example if you have made a typo in one of the operators, then previously the 
parser would not be able to detect this, and cause the evaluation to be true. 
There is a few changes in the syntax which are no longer backwards compatible. 
When using <a shape="rect" href="simple.html">Simple</a> language as a <a 
shape="rect" href="predicate.html">Predicate</a> then the literal text 
<strong>must</strong> be enclosed in either single or do
 uble quotes. For example: <code>"${body} == 'Camel'"</code>. Notice how we 
have single quotes around the literal. The old style of using 
<code>"body"</code> and <code>"header.foo"</code> to refer to the message body 
and header is @deprecated, and its encouraged to always use ${ } tokens for the 
built-in functions.<br clear="none"> The range operator now requires the range 
to be in single quote as well as shown: <code>"${header.zip} between 
'30000..39999'"</code>.</p></div></div><p>To get the body of the in message: 
<code>"body"</code>, or <code>"in.body"</code> or 
<code>"${body}"</code>.</p><p>A complex expression must use ${ } placeholders, 
such as: <code>"Hello ${in.header.name} how are you?"</code>.</p><p>You can 
have multiple functions in the same expression: <code>"Hello ${in.header.name} 
this is ${in.header.me} speaking"</code>.<br clear="none"> However you can 
<strong>not</strong> nest functions in Camel 2.8.x or older (i.e. having 
another ${ } placeholder in an existing, is 
 not allowed).<br clear="none"> From <strong>Camel 2.9</strong> onwards you can 
nest functions.</p><h3 
id="BookLanguagesAppendix-Variables.4">Variables</h3><div 
class="confluenceTableSmall"><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Variable</p></th><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Type</p></th><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>camelId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.10:</strong> the <a shape="rect" 
href="camelcontext.html">CamelContext</a> name</p></td></tr><tr><td colspan="1" 
rowspan="1" 
class="confluenceTd"><p>camelContext.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel
  2.11:</strong> the CamelContext invoked using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchange</td><td colspan="1" rowspan="1" 
class="confluenceTd">Exchange</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.16:</strong> the <a shape="rect" 
href="exchange.html">Exchange</a></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchange.<strong>OGNL</strong></td><td colspan="1" 
rowspan="1" class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.16:</strong><span> the </span><a 
shape="rect" href="exchange.html">Exchange</a><span> invoked using a Camel OGNL 
expression.</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exchangeId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> the exchange 
id</p></td></tr><tr><td colspan="1" rowspan="1" class=
 "confluenceTd"><p>id</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input message id</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>body</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input body</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>in.body</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input body</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>body.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> the input body 
invoked using a Camel OGNL expression.</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>in.body.<strong>OGN
 L</strong></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> the input body invoked 
using a Camel OGNL expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>bodyAs(<em>type</em>)</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> Converts the body to the 
given type determined by its classname. The converted body can be 
null.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>mandatoryBodyAs(<em>type</em>)</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.5:</strong> Converts the body to the 
given type determined by its classname, and expects the body to be not 
null.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.body</p>
 </td><td colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>the output 
body</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>header[foo]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the 
input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>headers[foo]</p></td><td 
colspan="1" rowspan=
 "1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the input foo 
header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.header.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.header[foo]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the 
input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.headers[foo]</p></
 td><td colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> 
refer to the input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo[bar]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> regard input foo header as 
a map and perform lookup on the map with bar as key</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.header.foo[bar]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> regard input 
foo header as a map and perform lookup on the map with bar as 
key</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo[bar]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspa
 n="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> regard 
input foo header as a map and perform lookup on the map with bar as 
key</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the 
input foo header and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.header.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the 
input foo header and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>O
 bject</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the input foo 
header and invoke its value using a Camel OGNL expression.</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>out.header.foo</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.header[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the out header foo</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>out
 .headers[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>headerAs(<em>key</em>,<em>type</em>)</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.5:</strong> Converts the 
header to the given type determined by its classname</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>headers</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Map</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9:</strong> refer to the input 
headers</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Map</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel
  2.9:</strong> refer to the input headers</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>property.foo</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Deprecated:</strong> refer to the foo property 
on the exchange</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchangeProperty.foo</td><td colspan="1" rowspan="1" 
class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><span><strong>Camel 2.15:</strong> refer to the foo 
property on the exchange</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>property[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Deprecated:</strong> refer to the foo property 
on the exchange</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><span>exchangeProperty[foo]</span></td><td colsp
 an="1" rowspan="1" class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.15:</strong><span> refer to the foo 
property on the exchange</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>property.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Deprecated:</strong> refer to the 
foo property on the exchange and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><span>exchangeProperty.foo.</span><strong>OGNL</strong></td><td
 colspan="1" rowspan="1" class="confluenceTd">Object</td><td colspan="1" 
rowspan="1" class="confluenceTd"><strong>Camel 2.15:</strong><span> refer to 
the foo property on the exchange and invoke its value using a Camel OGNL 
expression.</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>sys.foo</p></td><td colspan
 ="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>refer to the system 
property</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>sysenv.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the system 
environment</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.4:</strong> Refer to the exception 
object on the exchange, is <strong>null</strong> if no exception set on 
exchange. Will fallback and grab caught exceptions 
(<code>Exchange.EXCEPTION_CAUGHT</code>) if the Exchange has 
any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception.<strong>OGNL</strong></p></td><td colspan="1" 
rowspan="1" class="con
 fluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.4:</strong> Refer to the exchange 
exception invoked using a Camel OGNL expression object</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>exception.message</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Refer to the exception.message on the 
exchange, is <strong>null</strong> if no exception set on exchange. Will 
fallback and grab caught exceptions (<code>Exchange.EXCEPTION_CAUGHT</code>) if 
the Exchange has any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception.stacktrace</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.6.</strong> Refer to the 
exception.stracktrace on the exchange, is <strong>null</strong> if no exception 
set on exchange. Will fallback and grab caught
  exceptions (<code>Exchange.EXCEPTION_CAUGHT</code>) if the Exchange has 
any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>date:<em>command:pattern</em></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Date formatting using the 
<code>java.text.SimpleDataFormat</code> patterns. Supported commands are: 
<strong>now</strong> for current timestamp, <strong>in.header.xxx</strong> or 
<strong>header.xxx</strong> to use the Date object in the IN header with the 
key xxx. <strong>out.header.xxx</strong> to use the Date object in the OUT 
header with the key xxx.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>bean:<em>bean expression</em></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Invoking a bean expression using the <a shape="rect" 
href="bean.html">Bean</a> language. Specifying a method nam
 e you must use dot as separator. We also support the ?method=methodname syntax 
that is used by the <a shape="rect" href="bean.html">Bean</a> 
component.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>properties:<em>locations:key</em></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Deprecated (use properties-location 
instead) Camel 2.3:</strong> Lookup a property with the given key. The 
<code>locations</code> option is optional. See more at <a shape="rect" 
href="using-propertyplaceholder.html">Using 
PropertyPlaceholder</a>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>properties-location:<em><a shape="rect" 
class="external-link" href="http://locationskey"; 
rel="nofollow">locations:key</a></em></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.14.1:</strong> Lookup
  a property with the given key. The <code>locations</code> option is optional. 
See more at <a shape="rect" href="using-propertyplaceholder.html">Using 
PropertyPlaceholder</a>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">properties:key:default</td><td colspan="1" rowspan="1" 
class="confluenceTd">String</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.14.1</strong>: Lookup a property with the 
given key. If the key does not exists or has no value, then an optional default 
value can be specified.</td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>routeId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.11:</strong> Returns the id of the 
current route the <a shape="rect" href="exchange.html">Exchange</a> is being 
routed.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>threadName</p></td><td colspan="1" rowspan="1" class
 ="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> Returns the name of the 
current thread. Can be used for logging purpose.</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>ref:xxx</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.6:</strong> To lookup a bean from the 
<a shape="rect" href="registry.html">Registry</a> with the given 
id.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>type:name.field</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.11:</strong> To refer to a type or 
field by its FQN name. To refer to a field you can append .FIELD_NAME. For 
example you can refer to the constant field from Exchange as: 
<code>org.apache.camel.Exchange.FILE_NAME</code></p></td><td colspan="1" 
rowspan="1
 " class="confluenceTd"><p>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>null</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>null</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.12.3:</strong> represents a 
<strong>null</strong></p></td></tr></tbody></table></div></div><h3 
id="BookLanguagesAppendix-OGNLexpressionsupport">OGNL expression 
support</h3><p><strong>Available as of Camel 2.3</strong></p><div 
class="confluence-information-macro 
confluence-information-macro-information"><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>Camel's OGNL support is for 
invoking methods only. You cannot access fields.<br clear="none"> From 
<strong>Camel 2.11.1</strong> onwards we added special support for accessing 
the length field of Java arrays.</p></div></div><p>The <a shape="rect" 
href="simple.html">Simple</a> and <a shape="rect" href="
 bean.html">Bean</a> language now supports a Camel OGNL notation for invoking 
beans in a chain like fashion.<br clear="none"> Suppose the Message IN body 
contains a POJO which has a <code>getAddress()</code> method.</p><p>Then you 
can use Camel OGNL notation to access the address object:</p><div class="code 
panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<h2 id="BookLanguagesAppendix-SimpleExpressionLanguage">Simple Expression 
Language</h2><p>The Simple Expression Language was a really simple language you 
can use, but has since grown more powerful. Its primarily intended for being a 
really small and simple language for evaluating <a shape="rect" 
href="expression.html">Expression</a> and <a shape="rect" 
href="predicate.html">Predicate</a> without requiring any new dependencies or 
knowledge of <a shape="rect" href="xpath.html">XPath</a>; so its ideal for 
testing in camel-core. Its ideal to cover 95% of the common use cases when you 
need a little bit of expression based script in your Camel 
routes.</p><p>However for much more complex use cases you are generally 
recommended to choose a more expressive and powerful language such 
as:</p><ul><li><a shape="rect" href="spel.html">SpEL</a></li><li><a 
shape="rect" href="mvel.html">Mvel</a></li><li><a shape="rect" 
href="groovy.html">Groovy</a></li><li><a shape="rect" 
href="javascript.html">Java
 Script</a></li><li><a shape="rect" href="el.html">EL</a></li><li><a 
shape="rect" href="ognl.html">OGNL</a></li><li>one of the supported <a 
shape="rect" href="scripting-languages.html">Scripting 
Languages</a></li></ul><p>The simple language uses <code>${body</code>} 
placeholders for complex expressions where the expression contains constant 
literals. The ${ } placeholders can be omitted if the expression is only the 
token itself.</p><div class="confluence-information-macro 
confluence-information-macro-tip"><p class="title">Alternative syntax</p><span 
class="aui-icon aui-icon-small aui-iconfont-approve 
confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.5 onwards you can 
also use the alternative syntax which uses $simple{ } as placeholders.<br 
clear="none"> This can be used in situations to avoid clashes when using for 
example Spring property placeholder together with Camel.</p></div></div><div 
class="confluence-information-macro co
 nfluence-information-macro-tip"><p class="title">Configuring result 
type</p><span class="aui-icon aui-icon-small aui-iconfont-approve 
confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.8 onwards you can 
configure the result type of the <a shape="rect" href="simple.html">Simple</a> 
expression. For example to set the type as a <code>java.lang.Boolean</code> or 
a <code>java.lang.Integer</code> etc.</p></div></div><div 
class="confluence-information-macro 
confluence-information-macro-information"><p class="title">File language is now 
merged with Simple language</p><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>From Camel 2.2 onwards, the <a 
shape="rect" href="file-language.html">File Language</a> is now merged with <a 
shape="rect" href="simple.html">Simple</a> language which means you can use all 
the file syntax directly within the simp
 le language.</p></div></div><div class="confluence-information-macro 
confluence-information-macro-information"><p class="title">Simple Language 
Changes in Camel 2.9 onwards</p><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>The <a shape="rect" 
href="simple.html">Simple</a> language have been improved from Camel 2.9 
onwards to use a better syntax parser, which can do index precise error 
messages, so you know exactly what is wrong and where the problem is. For 
example if you have made a typo in one of the operators, then previously the 
parser would not be able to detect this, and cause the evaluation to be true. 
There is a few changes in the syntax which are no longer backwards compatible. 
When using <a shape="rect" href="simple.html">Simple</a> language as a <a 
shape="rect" href="predicate.html">Predicate</a> then the literal text 
<strong>must</strong> be enclosed in either single or do
 uble quotes. For example: <code>"${body} == 'Camel'"</code>. Notice how we 
have single quotes around the literal. The old style of using 
<code>"body"</code> and <code>"header.foo"</code> to refer to the message body 
and header is @deprecated, and its encouraged to always use ${ } tokens for the 
built-in functions.<br clear="none"> The range operator now requires the range 
to be in single quote as well as shown: <code>"${header.zip} between 
'30000..39999'"</code>.</p></div></div><p>To get the body of the in message: 
<code>"body"</code>, or <code>"in.body"</code> or 
<code>"${body}"</code>.</p><p>A complex expression must use ${ } placeholders, 
such as: <code>"Hello ${in.header.name} how are you?"</code>.</p><p>You can 
have multiple functions in the same expression: <code>"Hello ${in.header.name} 
this is ${in.header.me} speaking"</code>.<br clear="none"> However you can 
<strong>not</strong> nest functions in Camel 2.8.x or older (i.e. having 
another ${ } placeholder in an existing, is 
 not allowed).<br clear="none"> From <strong>Camel 2.9</strong> onwards you can 
nest functions.</p><h3 
id="BookLanguagesAppendix-Variables.4">Variables</h3><div 
class="confluenceTableSmall"><div class="table-wrap"><table 
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Variable</p></th><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Type</p></th><th colspan="1" rowspan="1" 
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>camelId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.10:</strong> the <a shape="rect" 
href="camelcontext.html">CamelContext</a> name</p></td></tr><tr><td colspan="1" 
rowspan="1" 
class="confluenceTd"><p>camelContext.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel
  2.11:</strong> the CamelContext invoked using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchange</td><td colspan="1" rowspan="1" 
class="confluenceTd">Exchange</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.16:</strong> the <a shape="rect" 
href="exchange.html">Exchange</a></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchange.<strong>OGNL</strong></td><td colspan="1" 
rowspan="1" class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.16:</strong><span> the </span><a 
shape="rect" href="exchange.html">Exchange</a><span> invoked using a Camel OGNL 
expression.</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exchangeId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> the exchange 
id</p></td></tr><tr><td colspan="1" rowspan="1" class=
 "confluenceTd"><p>id</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input message id</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>body</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input body</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>in.body</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>the input body</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>body.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> the input body 
invoked using a Camel OGNL expression.</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>in.body.<strong>OGN
 L</strong></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> the input body invoked 
using a Camel OGNL expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>bodyAs(<em>type</em>)</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> Converts the body to the 
given type determined by its classname. The converted body can be 
null.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>mandatoryBodyAs(<em>type</em>)</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.5:</strong> Converts the body to the 
given type determined by its classname, and expects the body to be not 
null.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.body</p>
 </td><td colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>the output 
body</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>header[foo]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the 
input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>headers[foo]</p></td><td 
colspan="1" rowspan=
 "1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the input foo 
header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.header.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.header[foo]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the 
input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the input foo header</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.headers[foo]</p></
 td><td colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.2:</strong> 
refer to the input foo header</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo[bar]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> regard input foo header as 
a map and perform lookup on the map with bar as key</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>in.header.foo[bar]</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> regard input 
foo header as a map and perform lookup on the map with bar as 
key</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo[bar]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspa
 n="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> regard 
input foo header as a map and perform lookup on the map with bar as 
key</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>header.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the 
input foo header and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.header.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the 
input foo header and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>O
 bject</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the input foo 
header and invoke its value using a Camel OGNL expression.</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>out.header.foo</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.header[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>out.headers.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>refer to the out header foo</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>out
 .headers[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9.2:</strong> refer to the out header 
foo</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>headerAs(<em>key</em>,<em>type</em>)</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Type</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Camel 2.5:</strong> Converts the 
header to the given type determined by its classname</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>headers</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Map</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.9:</strong> refer to the input 
headers</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>in.headers</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Map</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel
  2.9:</strong> refer to the input headers</p></td></tr><tr><td colspan="1" 
rowspan="1" class="confluenceTd"><p>property.foo</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Deprecated:</strong> refer to the foo property 
on the exchange</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">exchangeProperty.foo</td><td colspan="1" rowspan="1" 
class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><span><strong>Camel 2.15:</strong> refer to the foo 
property on the exchange</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>property[foo]</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Deprecated:</strong> refer to the foo property 
on the exchange</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><span>exchangeProperty[foo]</span></td><td colsp
 an="1" rowspan="1" class="confluenceTd">Object</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.15:</strong><span> refer to the foo 
property on the exchange</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>property.foo.<strong>OGNL</strong></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Deprecated:</strong> refer to the 
foo property on the exchange and invoke its value using a Camel OGNL 
expression.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><span>exchangeProperty.foo.</span><strong>OGNL</strong></td><td
 colspan="1" rowspan="1" class="confluenceTd">Object</td><td colspan="1" 
rowspan="1" class="confluenceTd"><strong>Camel 2.15:</strong><span> refer to 
the foo property on the exchange and invoke its value using a Camel OGNL 
expression.</span></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>sys.foo</p></td><td colspan
 ="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>refer to the system 
property</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>sysenv.foo</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> refer to the system 
environment</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.4:</strong> Refer to the exception 
object on the exchange, is <strong>null</strong> if no exception set on 
exchange. Will fallback and grab caught exceptions 
(<code>Exchange.EXCEPTION_CAUGHT</code>) if the Exchange has 
any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception.<strong>OGNL</strong></p></td><td colspan="1" 
rowspan="1" class="con
 fluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.4:</strong> Refer to the exchange 
exception invoked using a Camel OGNL expression object</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>exception.message</p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Refer to the exception.message on the 
exchange, is <strong>null</strong> if no exception set on exchange. Will 
fallback and grab caught exceptions (<code>Exchange.EXCEPTION_CAUGHT</code>) if 
the Exchange has any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>exception.stacktrace</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.6.</strong> Refer to the 
exception.stracktrace on the exchange, is <strong>null</strong> if no exception 
set on exchange. Will fallback and grab caught
  exceptions (<code>Exchange.EXCEPTION_CAUGHT</code>) if the Exchange has 
any.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>date:<em>command:pattern</em></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Date formatting using the 
<code>java.text.SimpleDataFormat</code> patterns. Supported commands are: 
<strong>now</strong> for current timestamp, <strong>in.header.xxx</strong> or 
<strong>header.xxx</strong> to use the Date object in the IN header with the 
key xxx. <strong>out.header.xxx</strong> to use the Date object in the OUT 
header with the key xxx.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>bean:<em>bean expression</em></p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Invoking a bean expression using the <a shape="rect" 
href="bean.html">Bean</a> language. Specifying a method nam
 e you must use dot as separator. We also support the ?method=methodname syntax 
that is used by the <a shape="rect" href="bean.html">Bean</a> 
component.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>properties:<em>locations:key</em></p></td><td 
colspan="1" rowspan="1" class="confluenceTd"><p>String</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p><strong>Deprecated (use properties-location 
instead) Camel 2.3:</strong> Lookup a property with the given key. The 
<code>locations</code> option is optional. See more at <a shape="rect" 
href="using-propertyplaceholder.html">Using 
PropertyPlaceholder</a>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>properties-location:<em><a shape="rect" 
class="external-link" href="http://locationskey"; 
rel="nofollow">locations:key</a></em></p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.14.1:</strong> Lookup
  a property with the given key. The <code>locations</code> option is optional. 
See more at <a shape="rect" href="using-propertyplaceholder.html">Using 
PropertyPlaceholder</a>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">properties:key:default</td><td colspan="1" rowspan="1" 
class="confluenceTd">String</td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.14.1</strong>: Lookup a property with the 
given key. If the key does not exists or has no value, then an optional default 
value can be specified.</td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>routeId</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.11:</strong> Returns the id of the 
current route the <a shape="rect" href="exchange.html">Exchange</a> is being 
routed.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>threadName</p></td><td colspan="1" rowspan="1" class
 ="confluenceTd"><p>String</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.3:</strong> Returns the name of the 
current thread. Can be used for logging purpose.</p></td></tr><tr><td 
colspan="1" rowspan="1" class="confluenceTd"><p>ref:xxx</p></td><td colspan="1" 
rowspan="1" class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.6:</strong> To lookup a bean from the 
<a shape="rect" href="registry.html">Registry</a> with the given 
id.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>type:name.field</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>Object</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.11:</strong> To refer to a type or 
field by its FQN name. To refer to a field you can append .FIELD_NAME. For 
example you can refer to the constant field from Exchange as: 
<code>org.apache.camel.Exchange.FILE_NAME</code></p></td><td colspan="1" 
rowspan="1
 " class="confluenceTd"><p>.</p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd"><p>null</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p>null</p></td><td colspan="1" rowspan="1" 
class="confluenceTd"><p><strong>Camel 2.12.3:</strong> represents a 
<strong>null</strong></p></td></tr><tr><td colspan="1" rowspan="1" 
class="confluenceTd">random<em>(value)</em></td><td colspan="1" rowspan="1" 
class="confluenceTd"><span>Integer</span></td><td colspan="1" rowspan="1" 
class="confluenceTd"><strong>Camel 2.16.0: </strong>returns a random integer 
value between 0 (included) and <em>value </em>(excluded)</td></tr><tr><td 
colspan="1" rowspan="1" 
class="confluenceTd"><span>random</span><em>(min,max)</em></td><td colspan="1" 
rowspan="1" class="confluenceTd"><span>Integer</span></td><td colspan="1" 
rowspan="1" class="confluenceTd"><strong>Camel 2.16.0: </strong><span>returns a 
random integer value between <em>min</em> (included) and </span><em>max 
</em><span>(excluded)</span><
 /td></tr></tbody></table></div></div><h3 
id="BookLanguagesAppendix-OGNLexpressionsupport">OGNL expression 
support</h3><p><strong>Available as of Camel 2.3</strong></p><div 
class="confluence-information-macro 
confluence-information-macro-information"><span class="aui-icon aui-icon-small 
aui-iconfont-info confluence-information-macro-icon"></span><div 
class="confluence-information-macro-body"><p>Camel's OGNL support is for 
invoking methods only. You cannot access fields.<br clear="none"> From 
<strong>Camel 2.11.1</strong> onwards we added special support for accessing 
the length field of Java arrays.</p></div></div><p>The <a shape="rect" 
href="simple.html">Simple</a> and <a shape="rect" href="bean.html">Bean</a> 
language now supports a Camel OGNL notation for invoking beans in a chain like 
fashion.<br clear="none"> Suppose the Message IN body contains a POJO which has 
a <code>getAddress()</code> method.</p><p>Then you can use Camel OGNL notation 
to access the address object:</p><div c
 lass="code panel pdl" style="border-width: 1px;"><div class="codeContent 
panelContent pdl">
 <script class="brush: java; gutter: false; theme: Default" 
type="syntaxhighlighter"><![CDATA[simple(&quot;${body.address}&quot;)
 simple(&quot;${body.address.street}&quot;)
 simple(&quot;${body.address.zip}&quot;)
@@ -997,7 +997,7 @@ simple(&quot;There are ${body.length} li
 </div></div><p>Some examples:</p><div class="code panel pdl" 
style="border-width: 1px;"><div class="codeContent panelContent pdl">
 <script class="brush: java; gutter: false; theme: Default" 
type="syntaxhighlighter"><![CDATA[// exact equals match
 simple(&quot;${in.header.foo} == &#39;foo&#39;&quot;)
- 
+?
 // ignore case when comparing, so if the header has value FOO this will match
 simple(&quot;${in.header.foo} =~ &#39;foo&#39;&quot;)
 

Modified: websites/production/camel/content/cache/main.pageCache
==============================================================================
Binary files - no diff available.

Reply via email to