Gets the current ErrorHandler set to this SchemaFactory.

  Gets the current ErrorHandler set to this SchemaFactory.
Returns: This method returns the object that was last set through the {@link #setErrorHandler(ErrorHandler)} method, or null if that method has never been called since this {@link SchemaFactory} has created.
See Also: SchemaFactory.setErrorHandler(ErrorHandler),

  Look up the value of a feature flag.

  Look up the value of a feature flag.

The feature name is any fully-qualified URI. It is possible for a SchemaFactory to recognize a feature name but temporarily be unable to return its value.

Implementors are free (and encouraged) to invent their own features, using names built on their own URIs.

Returns: The current value of the feature (true or false).
Parameters:
- name - The feature name, which is a non-null fully-qualified URI.
Throws:
- SAXNotRecognizedException - If the feature value can't be assigned or retrieved.
- SAXNotSupportedException - When the {@link SchemaFactory} recognizes the feature name but cannot determine its value at this time.
- NullPointerException - If name is null.
See Also: SchemaFactory.setFeature(String, boolean),

  Look up the value of a property.

  Look up the value of a property.

The property name is any fully-qualified URI. It is possible for a SchemaFactory to recognize a property name but temporarily be unable to return its value.

SchemaFactorys are not required to recognize any specific property names.

Implementors are free (and encouraged) to invent their own properties, using names built on their own URIs.

Returns: The current value of the property.
Parameters:
- name - The property name, which is a non-null fully-qualified URI.
Throws:
- SAXNotRecognizedException - If the property value can't be assigned or retrieved.
- SAXNotSupportedException - When the XMLReader recognizes the property name but cannot determine its value at this time.
- NullPointerException - If name is null.
See Also: SchemaFactory.setProperty(String, Object),

  Gets the current LSResourceResolver set to this SchemaFactory.

  Gets the current LSResourceResolver set to this SchemaFactory.
Returns: This method returns the object that was last set through the {@link #setResourceResolver(LSResourceResolver)} method, or null if that method has never been called since this {@link SchemaFactory} has created.
See Also: SchemaFactory.setErrorHandler(ErrorHandler),

  Is specified schema supported by this SchemaFactory?

 

Is specified schema supported by this SchemaFactory?

Returns: true if SchemaFactory supports schemaLanguage, else false.
Parameters:
- schemaLanguage - Specifies the schema language which the returned SchemaFactory will understand. schemaLanguage must specify a valid schema language.
Throws:
- NullPointerException - If schemaLanguage is null.
- IllegalArgumentException - If schemaLanguage.length() == 0 or schemaLanguage does not specify a valid schema language.

  Lookup an implementation of the SchemaFactory that supports the specified schema language and return it.

 

Lookup an implementation of the SchemaFactory that supports the specified schema language and return it.

To find a SchemaFactory object for a given schema language, this method looks the following places in the following order where "the class loader" refers to the context class loader:

1. If the system property "javax.xml.validation.SchemaFactory:schemaLanguage" is present (where schemaLanguage is the parameter to this method), then its value is read as a class name. The method will try to create a new instance of this class by using the class loader, and returns it if it is successfully created.
2. $java.home/lib/jaxp.properties is read and the value associated with the key being the system property above is looked for. If present, the value is processed just like above.

3. The class loader is asked for service provider provider-configuration files matching javax.xml.validation.SchemaFactory in the resource directory META-INF/services. See the JAR File Specification for file format and parsing rules. Each potential service provider is required to implement the method:

           SchemaFactory.isSchemaLanguageSupported(String schemaLanguage)
        

   The first service provider found in class loader order that supports the specified schema language is returned.
4. Platform default SchemaFactory is located in a implementation specific way. There must be a platform default SchemaFactory for W3C XML Schema.

If everything fails, IllegalArgumentException will be thrown.

Tip for Trouble-shooting:

See Properties.load(java.io.InputStream) for exactly how a property file is parsed. In particular, colons ':' need to be escaped in a property file, so make sure schema language URIs are properly escaped in it. For example:

 http\://www.w3.org/2001/XMLSchema=org.acme.foo.XSSchemaFactory
 

Returns: New instance of a SchemaFactory
Parameters:
- schemaLanguage - Specifies the schema language which the returned SchemaFactory will understand. See the list of available schema languages for the possible values.
Throws:
- IllegalArgumentException - If no implementation of the schema language is available.
- NullPointerException - If the schemaLanguage parameter is null.
See Also: SchemaFactory.newInstance(String schemaLanguage, String factoryClassName, ClassLoader classLoader),

  Obtain a new instance of a SchemaFactory from class name.

 

Obtain a new instance of a SchemaFactory from class name. SchemaFactory is returned if specified factory class name supports the specified schema language. This function is useful when there are multiple providers in the classpath. It gives more control to the application as it can specify which provider should be loaded.

Tip for Trouble-shooting

Setting the jaxp.debug system property will cause this method to print a lot of debug messages to System.err about what it is doing and where it is looking at.

If you have problems try:

 java -Djaxp.debug=1 YourProgram ....
 

Returns: New instance of a SchemaFactory
Parameters:
- schemaLanguage - Specifies the schema language which the returned SchemaFactory will understand. See the list of available schema languages for the possible values.
- factoryClassName - fully qualified factory class name that provides implementation of javax.xml.validation.SchemaFactory.
- classLoader - ClassLoader used to load the factory class. If null current Thread's context classLoader is used to load the factory class.
Throws:
- IllegalArgumentException - if factoryClassName is null, or the factory class cannot be loaded, instantiated or doesn't support the schema language specified in schemLanguage parameter.
- NullPointerException - If the schemaLanguage parameter is null.
Since: 1.6
See Also: SchemaFactory.newInstance(String schemaLanguage),

  Creates a special Schema object.

  Creates a special Schema object.

The exact semantics of the returned Schema object depend on the schema language for which this SchemaFactory is created.

Also, implementations are allowed to use implementation-specific property/feature to alter the semantics of this method.

Implementors and developers should pay particular attention to how the features set on this SchemaFactory are processed by this special Schema. In some cases, for example, when the SchemaFactory and the class actually loading the schema come from different implementations, it may not be possible for SchemaFactory features to be inherited automatically. Developers should make sure that features, such as secure processing, are explicitly set in both places.

W3C XML Schema 1.0

For XML Schema, this method creates a Schema object that performs validation by using location hints specified in documents.

The returned Schema object assumes that if documents refer to the same URL in the schema location hints, they will always resolve to the same schema document. This asusmption allows implementations to reuse parsed results of schema documents so that multiple validations against the same schema will run faster.

Note that the use of schema location hints introduces a vulnerability to denial-of-service attacks.

RELAX NG

RELAX NG does not support this operation.
Returns: Always return non-null valid {@link Schema} object.
Throws:
- UnsupportedOperationException - If this operation is not supported by the callee.
- SAXException - If this operation is supported but failed for some reason.

  Parses the specified File as a schema and returns it as a Schema.

 

Parses the specified File as a schema and returns it as a Schema.

This is a convenience method for SchemaFactory.newSchema(Source schema).

Returns: New Schema from parsing schema.
Parameters:
- schema - File that represents a schema.
Throws:
- SAXException - If a SAX error occurs during parsing.
- NullPointerException - if schema is null.

  Parses the specified source as a schema and returns it as a schema.

 

Parses the specified source as a schema and returns it as a schema.

This is a convenience method for SchemaFactory.newSchema(Source[] schemas).

Returns: New Schema from parsing schema.
Parameters:
- schema - Source that represents a schema.
Throws:
- SAXException - If a SAX error occurs during parsing.
- NullPointerException - if schema is null.

  Parses the specified source(s) as a schema and returns it as a schema.

  Parses the specified source(s) as a schema and returns it as a schema.

The callee will read all the Sources and combine them into a single schema. The exact semantics of the combination depends on the schema language that this SchemaFactory object is created for.

When an ErrorHandler is set, the callee will report all the errors found in sources to the handler. If the handler throws an exception, it will abort the schema compilation and the same exception will be thrown from this method. Also, after an error is reported to a handler, the callee is allowed to abort the further processing by throwing it. If an error handler is not set, the callee will throw the first error it finds in the sources.

W3C XML Schema 1.0

The resulting schema contains components from the specified sources. The same result would be achieved if all these sources were imported, using appropriate values for schemaLocation and namespace, into a single schema document with a different targetNamespace and no components of its own, if the import elements were given in the same order as the sources. Section 4.2.3 of the XML Schema recommendation describes the options processors have in this regard. While a processor should be consistent in its treatment of JAXP schema sources and XML Schema imports, the behaviour between JAXP-compliant parsers may vary; in particular, parsers may choose to ignore all but the first <import> for a given namespace, regardless of information provided in schemaLocation.

If the parsed set of schemas includes error(s) as specified in the section 5.1 of the XML Schema spec, then the error must be reported to the ErrorHandler.

RELAX NG

For RELAX NG, this method must throw UnsupportedOperationException if schemas.length!=1.
Returns: Always return a non-null valid {@link Schema} object. Note that when an error has been reported, there is no guarantee that the returned {@link Schema} object is meaningful.
Parameters:
- schemas - inputs to be parsed. {@link SchemaFactory} is required to recognize {@link javax.xml.transform.sax.SAXSource}, {@link StreamSource}, {@link javax.xml.transform.stax.StAXSource}, and {@link javax.xml.transform.dom.DOMSource}. Input schemas must be XML documents or XML elements and must not be null. For backwards compatibility, the results of passing anything other than a document or element are implementation-dependent. Implementations must either recognize and process the input or thrown an IllegalArgumentException.
Throws:
- SAXException - If an error is found during processing the specified inputs. When an {@link ErrorHandler} is set, errors are reported to there first. See {@link #setErrorHandler(ErrorHandler)}.
- NullPointerException - If the schemas parameter itself is null or any item in the array is null.
- IllegalArgumentException - If any item in the array is not recognized by this method.
- UnsupportedOperationException - If the schema language doesn't support this operation.

  Parses the specified URL as a schema and returns it as a Schema.

 

Parses the specified URL as a schema and returns it as a Schema.

This is a convenience method for SchemaFactory.newSchema(Source schema).

Returns: New Schema from parsing schema.
Parameters:
- schema - URL that represents a schema.
Throws:
- SAXException - If a SAX error occurs during parsing.
- NullPointerException - if schema is null.

  Sets the ErrorHandler to receive errors encountered during the newSchema method invocation.

  Sets the ErrorHandler to receive errors encountered during the newSchema method invocation.

Error handler can be used to customize the error handling process during schema parsing. When an ErrorHandler is set, errors found during the parsing of schemas will be first sent to the ErrorHandler.

The error handler can abort the parsing of a schema immediately by throwing SAXException from the handler. Or for example it can print an error to the screen and try to continue the processing by returning normally from the ErrorHandler

If any Throwable (or instances of its derived classes) is thrown from an ErrorHandler, the caller of the newSchema method will be thrown the same Throwable object.

SchemaFactory is not allowed to throw SAXException without first reporting it to ErrorHandler.

Applications can call this method even during a Schema is being parsed.

When the ErrorHandler is null, the implementation will behave as if the following ErrorHandler is set:

 class DraconianErrorHandler implements ErrorHandler {
     public void fatalError( SAXParseException e ) throws SAXException {
         throw e;
     }
     public void error( SAXParseException e ) throws SAXException {
         throw e;
     }
     public void warning( SAXParseException e ) throws SAXException {
         // noop
     }
 }
 

When a new SchemaFactory object is created, initially this field is set to null. This field will NOT be inherited to Schemas, Validators, or ValidatorHandlers that are created from this SchemaFactory.
Parameters:
- errorHandler - A new error handler to be set. This parameter can be null.

  Set a feature for this SchemaFactory, Schemas created by this factory, and by extension, Validators and ValidatorHandlers created by those Schemas.

 

Set a feature for this SchemaFactory, Schemas created by this factory, and by extension, Validators and ValidatorHandlers created by those Schemas.

Implementors and developers should pay particular attention to how the special Schema object returned by SchemaFactory.newSchema() is processed. In some cases, for example, when the SchemaFactory and the class actually loading the schema come from different implementations, it may not be possible for SchemaFactory features to be inherited automatically. Developers should make sure that features, such as secure processing, are explicitly set in both places.

The feature name is any fully-qualified URI. It is possible for a SchemaFactory to expose a feature value but to be unable to change the current value.

All implementations are required to support the XMLConstants.FEATURE_SECURE_PROCESSING feature. When the feature is:

• true: the implementation will limit XML processing to conform to implementation limits. Examples include enity expansion limits and XML Schema constructs that would consume large amounts of resources. If XML processing is limited for security reasons, it will be reported via a call to the registered ErrorHandler.fatalError(SAXParseException exception). See SchemaFactory.setErrorHandler(ErrorHandler errorHandler).
• false: the implementation will processing XML according to the XML specifications without regard to possible implementation limits.

Parameters:
- name - The feature name, which is a non-null fully-qualified URI.
- value - The requested value of the feature (true or false).
Throws:
- SAXNotRecognizedException - If the feature value can't be assigned or retrieved.
- SAXNotSupportedException - When the {@link SchemaFactory} recognizes the feature name but cannot set the requested value.
- NullPointerException - If name is null.
See Also: SchemaFactory.getFeature(String),

  Set the value of a property.

  Set the value of a property.

The property name is any fully-qualified URI. It is possible for a SchemaFactory to recognize a property name but to be unable to change the current value.

SchemaFactorys are not required to recognize setting any specific property names.

Parameters:
- name - The property name, which is a non-null fully-qualified URI.
- object - The requested value for the property.
Throws:
- SAXNotRecognizedException - If the property value can't be assigned or retrieved.
- SAXNotSupportedException - When the {@link SchemaFactory} recognizes the property name but cannot set the requested value.
- NullPointerException - If name is null.

  Sets the LSResourceResolver to customize resource resolution when parsing schemas.

  Sets the LSResourceResolver to customize resource resolution when parsing schemas.

SchemaFactory uses a LSResourceResolver when it needs to locate external resources while parsing schemas, although exactly what constitutes "locating external resources" is up to each schema language. For example, for W3C XML Schema, this includes files <include>d or <import>ed, and DTD referenced from schema files, etc.

Applications can call this method even during a Schema is being parsed.

When the LSResourceResolver is null, the implementation will behave as if the following LSResourceResolver is set:

 class DumbDOMResourceResolver implements LSResourceResolver {
     public LSInput resolveResource(
         String publicId, String systemId, String baseURI) {
         
         return null; // always return null
     }
 }
 

If a LSResourceResolver throws a RuntimeException (or instances of its derived classes), then the SchemaFactory will abort the parsing and the caller of the newSchema method will receive the same RuntimeException.

When a new SchemaFactory object is created, initially this field is set to null. This field will NOT be inherited to Schemas, Validators, or ValidatorHandlers that are created from this SchemaFactory.
Parameters:
- resourceResolver - A new resource resolver to be set. This parameter can be null.