MSV

Since Camel 1.1

The MSV component performs XML validation of the message body using the MSV Library and any of the supported XML schema languages, such as XML Schema or RelaxNG XML Syntax.

Maven users will need to add the following dependency to their pom.xml for this component:

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

Note that the Jing component also supports RelaxNG Compact Syntax

URI format

msv:someLocalOrRemoteResource[?options]

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. For example

msv:org/foo/bar.rng
msv:file:../foo/bar.rng
msv:http://acme.com/cheese.rng

You can append query options to the URI in the following format, ?option=value&option=value&…​

Options

The MSV component supports 3 options, which are listed below.

Name Description Default Type

schemaFactory (advanced)

To use the javax.xml.validation.SchemaFactory.

SchemaFactory

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 MSV endpoint is configured using URI syntax:

msv:resourceUri

with the following path and query parameters:

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

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. Do not use together with resourceResolverFactory

LSResourceResolver

resourceResolverFactory (advanced)

To use a custom LSResourceResolver which depends on a dynamic endpoint resource URI. The default resource resolver factory resturns a resource resolver which can read files from the class path and file system. Do not use together with resourceResolver.

ValidatorResource ResolverFactory

schemaFactory (advanced)

To use a custom javax.xml.validation.SchemaFactory

SchemaFactory

schemaLanguage (advanced)

Configures the W3C XML Schema Namespace URI.

http://www.w3.org/2001/XMLSchema

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

Spring Boot Auto-Configuration

When using Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

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

The component supports 4 options, which are listed below.

Name Description Default Type

camel.component.msv.enabled

Enable msv component

true

Boolean

camel.component.msv.resolve-property-placeholders

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

Boolean

camel.component.msv.resource-resolver-factory

To use a custom LSResourceResolver which depends on a dynamic endpoint resource URI. The option is a org.apache.camel.component.validator.ValidatorResourceResolverFactory type.

String

camel.component.msv.schema-factory

To use the javax.xml.validation.SchemaFactory. The option is a javax.xml.validation.SchemaFactory type.

String

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 RelaxNG XML Schema (which is supplied on the classpath).

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