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Variable | Type | Description | ||
---|---|---|---|---|
exchangeId | String | Camel 2.3: the exchange id | ||
id | String | the input message id | ||
body | Object | the input body | ||
in.body | Object | the input body | ||
body.OGNL | Object | Camel 2.3: the input body invoked using a Camel OGNL expression. | ||
in.body.OGNL | Object | Camel 2.3: the input body invoked using a Camel OGNL expression. | ||
bodyAs(type) | Type | Camel 2.3: Converts the body to the given type determined by its classname. The converted body can be null. | ||
mandatoryBodyAs(type) | Type | Camel 2.5: Converts the body to the given type determined by its classname, and expects the body to be not null. | ||
out.body | Object | the output body | ||
header.foo | Object | refer to the input foo header | ||
headers.foo | Object | refer to the input foo header | ||
in.header.foo | Object | refer to the input foo header | ||
in.headers.foo | Object | refer to the input foo header | ||
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="8bb73dec7f6bddb1-85c525aa-48764542-af6eb745-131c9020aaad7c7732f518f5"><ac:plain-text-body><![CDATA[ | header.foo[bar] | Object | Camel 2.3: regard input foo header as a map and perform lookup on the map with bar as key | ]]></ac:plain-text-body></ac:structured-macro> |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="1731ba800caac093-3f86e29d-4b9e4464-ad3d849c-2ce8e52db2025a21bbf16c0e"><ac:plain-text-body><![CDATA[ | in.header.foo[bar] | Object | Camel 2.3: regard input foo header as a map and perform lookup on the map with bar as key | ]]></ac:plain-text-body></ac:structured-macro> |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="ba22c081936612ae-24cbecb9-4c034d87-a77b9546-41c329d892bb45bad4baddad"><ac:plain-text-body><![CDATA[ | in.headers.foo[bar] | Object | Camel 2.3: regard input foo header as a map and perform lookup on the map with bar as key | ]]></ac:plain-text-body></ac:structured-macro> |
header.foo.OGNL | Object | Camel 2.3: refer to the input foo header and invoke its value using a Camel OGNL expression. | ||
in.header.foo.OGNL | Object | Camel 2.3: refer to the input foo header and invoke its value using a Camel OGNL expression. | ||
in.headers.foo.OGNL | Object | Camel 2.3: refer to the input foo header and invoke its value using a Camel OGNL expression. | ||
out.header.foo | Object | refer to the out header foo | ||
out.headers.foo | Object | refer to the out header foo | ||
headerAs(key,type) | Type | Camel 2.5: Converts the header to the given type determined by its classname | ||
property.foo | Object | refer to the foo property on the exchange | ||
sys.foo | String | refer to the system property | ||
sysenv.foo | String | Camel 2.3: refer to the system environment | ||
exception | Object | Camel 2.4: Refer to the exception object on the exchange, is null if no exception set on exchange. Will fallback and grab caught exceptions ( | ||
exception.OGNL | Object | Camel 2.4: Refer to the exchange exception invoked using a Camel OGNLE expression object | ||
exception.message | String | Camel 2.0. Refer to the exception.message on the exchange, is null if no exception set on exchange. Will fallback and grab caught exceptions ( | ||
exception.stacktrace | String | Camel 2.6. Refer to the exception.stracktrace on the exchange, is null if no exception set on exchange. Will fallback and grab caught exceptions ( | ||
date:command:pattern | String | Camel 1.5. Date formatting using the | ||
bean:bean expression | Object | Camel 1.5. Invoking a bean expression using the Bean language. Specifying a method name you must use dot as separator. In Camel 2.0 we also support the ?method=methodname syntax that is used by the Bean component. | ||
properties:locations:key | String | Camel 2.3: Lookup a property with the given key. The | ||
threadName | String | Camel 2.3: Returns the name of the current thread. Can be used for logging purpose. | ||
ref:xxx | Object | Camel 2.6: To lookup a bean from the Registry with the given id. |
...
To assume the body is Map
based and lookup the value with foo
as key, and invoke the getName
method on that value.
You can access the Map
or List
objects directly using their key name (with or without dots) :
Code Block |
---|
simple("${body[foo]}")
simple("${body[this.is.foo]}")
|
Suppose there was no value with the key foo
then you can use the null safe operator to avoid the NPE as shown:
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