Modified: websites/production/camel/content/simple.html
==============================================================================
--- websites/production/camel/content/simple.html (original)
+++ websites/production/camel/content/simple.html Wed Jul 22 17:20:53 2015
@@ -86,7 +86,7 @@
<tbody>
<tr>
<td valign="top" width="100%">
-<div class="wiki-content maincontent"><h2
id="Simple-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">JavaScript</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="confluen
ce-information-macro confluence-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 d
irectly within the simple 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 double 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 ${ } placehol
der in an existing, is not allowed).<br clear="none"> From <strong>Camel
2.9</strong> onwards you can nest functions.</p><h3
id="Simple-Variables">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.<stro
ng>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>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.bo
dy</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" ro
wspan="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
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>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>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>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
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</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 c
olspan="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" clas
s="confluenceTd"><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 meth
od name 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" rows
pan="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="Simple-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">
+<div class="wiki-content maincontent"><h2
id="Simple-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">JavaScript</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="confluen
ce-information-macro confluence-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 d
irectly within the simple 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 double 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 ${ } placehol
der in an existing, is not allowed).<br clear="none"> From <strong>Camel
2.9</strong> onwards you can nest functions.</p><h3
id="Simple-Variables">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.<stro
ng>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>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.bo
dy</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" ro
wspan="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
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>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>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>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
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</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 c
olspan="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" clas
s="confluenceTd"><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 meth
od name 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" rows
pan="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="Simple-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="cod
e panel pdl" style="border-width: 1px;"><div class="codeContent panelContent
pdl">
<script class="brush: java; gutter: false; theme: Default"
type="syntaxhighlighter"><