SchemaValidate Task

SchemaValidate

Description

This task validates XML files described by an XML Schema. The task extends the XmlValidate task with XSD-specific features.

The parser is created validating and namespace aware
Validation is turned on.
Schema validation is turned on.
Any no-namespace schema URL or file supplied is used as the no-namespace schema
All nested schema declarations are turned into the list of namespace-url bindings for schema lookup.

Note that nested catalogs are still used for lookup of the URLs given as the sources of schema documents, so you can still delegate lookup to a catalog, you just need to list all schema URIs and their URL equivalents.

This task supports the use of nested

<xmlcatalog> elements

<schema> elements, that bind a namespace URI to a URL or a local filename.

<dtd> elements which are used to resolve DTDs and entities.

<attribute> elements which are used to set features on the parser. These can be any number of http://xml.org/sax/features/ or other features that your parser may support.

<property> elements, containing string properties

The task only supports SAX2 or later parsers: it is an error to specify a SAX1 parser.

Parameters

Attribute	Description	Required
classname	the parser to use.	No
classpathref	where to find the parser class. Optionally can use an embedded `<classpath>` element.	No
disableDTD	Flag to disable DTD support. DTD support is needed to validate XSD files themselves, amongst others.	No - default false
failonerror	fails on a error if set to true (defaults to true).	No
file	the file(s) you want to check. (optionally can use an embedded fileset)	No
fullchecking	enable full schema checking. Slow but strict.	No - default true
lenient	if true, only check the XML document is well formed	No
noNamespaceFile	filename of a no-namespace XSD file to provide the schema for no-namespace XML content.	No
noNamespaceURL	URL of a no-namespace XSD file to provide the schema for no-namespace XML content.	No
warn	log parser warn events.	No

Nested Elements

schema

Identify the name and location of a schema that may be used in validating the document(s).

Attribute	Description	Required
namespace	URI of the schema namespace	Yes
url	URL of the schema	One of url or file is required
file	file of the schema	One of url or file is required

dtd

<dtd> is used to specify different locations for DTD resolution.

Attribute	Description	Required
publicId	Public ID of the DTD to resolve	Yes
location	Location of the DTD to use, which can be a file, a resource, or a URL	Yes

xmlcatalog

The <xmlcatalog> element is used to perform entity resolution.

attribute

The <attribute> element is used to set parser features.
Features usable with the xerces parser are defined here : Setting features
SAX features are defined here: http://xml.org/sax/features/

Attribute	Description	Required
name	The name of the feature	Yes
value	The boolean value of the feature	Yes

property

The <property> element is used to set properties. These properties are defined here for the xerces XML parser implementation : XML Parser properties Properties can be used to set the schema used to validate the XML file.

Attribute	Description	Required
name	The name of the feature	Yes
value	The string value of the property	Yes

Examples

    <schemavalidate
      noNamespaceFile="document.xsd"
      file="xml/endpiece.xml">
    </schemavalidate>

Validate a document against an XML schema. The document does not declare any schema itself, which is why the noNamespaceFile is needed.

    <presetdef name="validate-soap">
      <schemavalidate >
        <schema namespace="http://schemas.xmlsoap.org/ws/2003/03/addressing"
          file="${soap.dir}/ws-addressing.xsd" />
        <schema namespace="http://www.w3.org/2003/05/soap-envelope"
          file="${soap.dir}/soap12.xsd" />
        <schema namespace="http://schemas.xmlsoap.org/wsdl/"
          file="${soap.dir}/wsdl.xsd" />
        <schema namespace="http://www.w3.org/2001/XMLSchema"
          file="${soap.dir}/XMLSchema.xsd" />
        </schemavalidate>
    </presetdef>

Declare a new preset task, <validate-soap>, that validates XSD and WSDL documents against the relevant specifications. To validate XSD documents, you also need XMLSchema.dtd and datatypes.dtd in the same directory as XMLSchema.xsd, or pointed to via the catalog. All these files can be fetched from the W3C.

    <validate-soap file="xml/test.xsd"/>

Use the preset task defined above to validate an XML Schema document.