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Chapter 326. Validator Component
Available as of Camel version 1.1
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.
326.1. URI format
validator:someLocalOrRemoteResource
validator:someLocalOrRemoteResourceWhere 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:
-
msv:org/foo/bar.xsd -
msv:file:../foo/bar.xsd -
msv:http://acme.com/cheese.xsd -
validator:com/mypackage/myschema.xsd
Maven users will need to add the following dependency to their pom.xml for this component when using Camel 2.8 or older:
From Camel 2.9 onwards the Validation component is provided directly in the camel-core.
326.2. Options
The Validator component supports 2 options which are listed below.
| Name | Description | Default | Type |
|---|---|---|---|
| resourceResolverFactory (advanced) | To use a custom LSResourceResolver which depends on a dynamic endpoint resource URI | ValidatorResource ResolverFactory | |
| resolveProperty Placeholders (advanced) | Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. | true | boolean |
The Validator endpoint is configured using URI syntax:
validator:resourceUri
validator:resourceUriwith the following path and query parameters:
326.2.1. Path Parameters (1 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| resourceUri | Required URL to a local resource on the classpath,or a reference to lookup a bean in the Registry, or a full URL to a remote resource or resource on the file system which contains the XSD to validate against. | String |
326.2.2. Query Parameters (11 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
| failOnNullBody (producer) | Whether to fail if no body exists. | true | boolean |
| failOnNullHeader (producer) | Whether to fail if no header exists when validating against a header. | true | boolean |
| headerName (producer) | To validate against a header instead of the message body. | String | |
| errorHandler (advanced) | To use a custom org.apache.camel.processor.validation.ValidatorErrorHandler. The default error handler captures the errors and throws an exception. | ValidatorErrorHandler | |
| resourceResolver (advanced) | To use a custom LSResourceResolver. See also link setResourceResolverFactory(ValidatorResourceResolverFactory) | LSResourceResolver | |
| resourceResolverFactory (advanced) | For creating a resource resolver which depends on the endpoint resource URI. Must not be used in combination with method link setResourceResolver(LSResourceResolver). If not set then DefaultValidatorResourceResolverFactory is used | ValidatorResource ResolverFactory | |
| schemaFactory (advanced) | To use a custom javax.xml.validation.SchemaFactory | SchemaFactory | |
| schemaLanguage (advanced) | Configures the W3C XML Schema Namespace URI. | String | |
| synchronous (advanced) | Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). | false | boolean |
| useDom (advanced) | Whether DOMSource/DOMResult or SaxSource/SaxResult should be used by the validator. | false | boolean |
| useSharedSchema (advanced) | 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. | true | boolean |
326.3. 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 or not the XML matches the given schema (which is supplied on the classpath).
326.4. Advanced: JMX method clearCachedSchema
Since Camel 2.17, you can force that the cached schema in the validator endpoint is cleared and reread with the next process call with the JMX operation clearCachedSchema. `You can also use this method to programmatically clear the cache. This method is available on the `ValidatorEndpoint `class.`
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