Validation

Validation Component

The Validation component performs XML validation of the message body using the JAXP Validation API and based on any of the supported XML schema languages, which defaults to XML Schema

Note that the Jing component also supports the following useful schema languages:

The MSV component also supports RelaxNG XML Syntax.

URI format

validator:someLocalOrRemoteResource

Where someLocalOrRemoteResource is some URL to a local resource on the classpath or a full URL to a remote resource or resource on the file system which contains the XSD to validate against. For example:

Dependencies

Maven users need to add the following dependency to their pom.xml for this component when using Camel 2.8 or earlier:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-spring</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

Apache Camel 2.9 onwards: The Validation component is provided directly in camel-core.

Options

Option Default Description
resourceResolver null Apache Camel 2.9: Specifies a reference to an org.w3c.dom.ls.LSResourceResolver in the Camel Registry.
useDom false Apache Camel 2.0: Specifies whether DOMSource/{{DOMResult}} or SaxSource/{{SaxResult}} should be used by the validator.
useSharedSchema true Apache Camel 2.3: Specifies whether the Schema instance should be shared or not. This option is introduced to work around a JDK 1.6.x bug. Xerces should not have this issue.
failIfNoBody true Apache Camel 2.9.5, 2.10.3: Specifies whether to fail when no body exists.
headerName null Apache Camel 2.11: Specifies whether to validate against a header instead of the message body.
failOnNullHeader true Apache Camel 2.11: Specifies whether to fail if no header exists when validating against a header.

Example

The following example shows how to configure a route from endpoint direct:start, which then goes to one of two endpoints—either mock:valid or mock:invalid, based on whether the XML matches the given schema (which is supplied on the classpath).

<camelContext xmlns="http://camel.apache.org/schema/spring">
    <route>
        <from uri="direct:start"/>
        <doTry>
            <to uri="validator:org/apache/camel/component/validator/schema.xsd"/>
            <to uri="mock:valid"/>
            <doCatch>
                <exception>org.apache.camel.ValidationException</exception>
                <to uri="mock:invalid"/>
            </doCatch>
            <doFinally>
                <to uri="mock:finally"/>
            </doFinally>
        </doTry>
    </route>
</camelContext>