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8.6. Validate
Overview Copier lienLien copié sur presse-papiers!
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The validate pattern provides a convenient syntax to check whether the content of a message is valid. The validate DSL command takes a predicate expression as its sole argument: if the predicate evaluates to
true
, the route continues processing normally; if the predicate evaluates to false
, a PredicateValidationException
is thrown.
Java DSL example Copier lienLien copié sur presse-papiers!
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The following route validates the body of the current message using a regular expression:
from("jms:queue:incoming") .validate(body(String.class).regex("^\\w{10}\\,\\d{2}\\,\\w{24}$")) .to("bean:MyServiceBean.processLine");
from("jms:queue:incoming")
.validate(body(String.class).regex("^\\w{10}\\,\\d{2}\\,\\w{24}$"))
.to("bean:MyServiceBean.processLine");
You can also validate a message header—for example:
from("jms:queue:incoming") .validate(header("bar").isGreaterThan(100)) .to("bean:MyServiceBean.processLine");
from("jms:queue:incoming")
.validate(header("bar").isGreaterThan(100))
.to("bean:MyServiceBean.processLine");
And you can use validate with the simple expression language:
from("jms:queue:incoming") .validate(simple("${in.header.bar} == 100")) .to("bean:MyServiceBean.processLine");
from("jms:queue:incoming")
.validate(simple("${in.header.bar} == 100"))
.to("bean:MyServiceBean.processLine");
XML DSL example Copier lienLien copié sur presse-papiers!
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To use validate in the XML DSL, the recommended approach is to use the simple expression language:
You can also validate a message header—for example: