com.saxonica.validate
Class ValidationStack

java.lang.Object
  net.sf.saxon.event.SequenceReceiver
      net.sf.saxon.event.ProxyReceiver
          com.saxonica.validate.ValidatingFilter
              com.saxonica.validate.ValidationStack

All Implemented Interfaces:

Result, Receiver

public class ValidationStack
extends ValidatingFilter

This class manages the receivers that do element content validation. It maintains a stack of Validators, each of which does local element validation of the contents of a single element, adding a new validator to the stack to handle each layer of nesting.

Field Summary

Fields inherited from interface javax.xml.transform.Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

ValidationStack(Receiver out, int initialValidationMode, SchemaType initialType, boolean isOutput)
Create a validation stack

Method Summary

void	attribute(int nameCode, int typeCode, CharSequence value, int locationId, int properties) Handle an attribute
void	characters(CharSequence chars, int locationId, int properties) Character data
void	endDocument() Notify the end of a document node
void	endElement() End of element
int	getTopLevelElement() Get the name of the required top-level element (if any) as a namepool fingerprint
void	setConstraintChecker(ConstraintChecker checker) Set the constraint checker in use (if any).
void	setInitialValidator(ContentValidator validator) Set the initial validator to be used for the outermost element
void	setIsNilled(boolean nilled) Indicate whether the current element is nilled
void	setNamespaceResolver(NamespaceResolver resolver) Set the NamespaceResolver to be used for resolving QName-valued attributes
void	setTopLevelElement(int nameCode) Set the name of the required top-level element (if any) as a namepool code
void	setXSIType(SchemaType type) Set the value of xsi:type, if present.
void	startContent() Notify the start of the content, that is, the completion of all attributes and namespaces.
void	startElement(int nameCode, int typeCode, int locationId, int properties) Process element start tag
void	testAssertions(NodeInfo root, Set assertions) Test whether all the assertions are true

Methods inherited from class com.saxonica.validate.ValidatingFilter

setErrorCode

Methods inherited from class net.sf.saxon.event.ProxyReceiver

append, close, comment, getConfiguration, getDocumentLocator, getNamePool, getUnderlyingReceiver, namespace, open, processingInstruction, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startDocument

Methods inherited from class net.sf.saxon.event.SequenceReceiver

getPipelineConfiguration, getSystemId

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ValidationStack

public ValidationStack(Receiver out,
                       int initialValidationMode,
                       SchemaType initialType,
                       boolean isOutput)

Create a validation stack

Parameters:

out - the destination of events after passing through validation

initialValidationMode - the initial validation mode, strict/lax

initialType - the initial type to validate against, if any

isOutput - true if the output is being serialized (so that we can handle more than one validation error)

Method Detail

setTopLevelElement

public void setTopLevelElement(int nameCode)

Set the name of the required top-level element (if any) as a namepool code

Parameters:

nameCode - the name of the element that must appear at the root of the subtree being validated

getTopLevelElement

public int getTopLevelElement()

Get the name of the required top-level element (if any) as a namepool fingerprint

Returns:

the name of the element that must appear at the root of the subtree being validated, or -1 if none has been set

setConstraintChecker

public void setConstraintChecker(ConstraintChecker checker)

Set the constraint checker in use (if any). The ValidationStack is responsible for telling the constraint checker about the ElementDeclaration that defines the uniqueness constraints for the current element. This is done immediately after the startElement call.

Parameters:

checker - the constraint checker

setXSIType

public void setXSIType(SchemaType type)

Set the value of xsi:type, if present. This will be called immediately before the startElement call for the element on which the xsi:type attribute appears.

Parameters:

type - the type referenced by the xsi:type attribute

setIsNilled

public void setIsNilled(boolean nilled)

Indicate whether the current element is nilled

Parameters:

nilled - true if xsi:nil is set

setNamespaceResolver

public void setNamespaceResolver(NamespaceResolver resolver)

Set the NamespaceResolver to be used for resolving QName-valued attributes

Parameters:

resolver - the namespace resolver

startElement

public void startElement(int nameCode,
                         int typeCode,
                         int locationId,
                         int properties)
                  throws XPathException

Process element start tag

Specified by:

startElement in interface Receiver

Overrides:

startElement in class ProxyReceiver

Parameters:

nameCode - integer code identifying the name of the element within the name pool.

typeCode - integer code identifying the element's type within the name pool.

locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.

properties - properties of the element node

Throws:

XPathException

setInitialValidator

public void setInitialValidator(ContentValidator validator)

Set the initial validator to be used for the outermost element

Parameters:

validator - the validator to be used for the outermost element being validated

attribute

public void attribute(int nameCode,
                      int typeCode,
                      CharSequence value,
                      int locationId,
                      int properties)
               throws XPathException

Handle an attribute

Specified by:

attribute in interface Receiver

Overrides:

attribute in class ProxyReceiver

Parameters:

nameCode - integer identifying the name of the attribute

typeCode - integer identifying the type annotation (ignored)

value - the value of the attribute

properties - additional properties of the attribute

locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.

Throws:

XPathException - On any failure to write the attribute

startContent

public final void startContent()
                        throws XPathException

Notify the start of the content, that is, the completion of all attributes and namespaces. Note that the initial receiver of output from XSLT instructions will not receive this event, it has to detect it itself. Note that this event is reported for every element even if it has no attributes, no namespaces, and no content.

Specified by:

startContent in interface Receiver

Overrides:

startContent in class ProxyReceiver

Throws:

XPathException

characters

public void characters(CharSequence chars,
                       int locationId,
                       int properties)
                throws XPathException

Description copied from class: ProxyReceiver

Character data

Specified by:

characters in interface Receiver

Overrides:

characters in class ProxyReceiver

Parameters:

chars - The characters

locationId - an integer which can be interpreted using a LocationProvider to return information such as line number and system ID. If no location information is available, the value zero is supplied.

properties - Bit significant value. The following bits are defined:

DISABLE_ESCAPING

Disable escaping for this text node

USE_CDATA

Output as a CDATA section

Throws:

XPathException

endElement

public void endElement()
                throws XPathException

End of element

Specified by:

endElement in interface Receiver

Overrides:

endElement in class ProxyReceiver

Throws:

XPathException

endDocument

public void endDocument()
                 throws XPathException

Notify the end of a document node

Specified by:

endDocument in interface Receiver

Overrides:

endDocument in class ProxyReceiver

Throws:

XPathException

testAssertions

public void testAssertions(NodeInfo root,
                           Set assertions)
                    throws ValidationException

Test whether all the assertions are true

Parameters:

root - the element whose assertions are to be tested

assertions - the xs:assert conditions to be applied

Throws:

ValidationException - if any of the assertions are not true