com.saxonica.ee.validate

Class ContentValidator

java.lang.Object

net.sf.saxon.event.SequenceReceiver

net.sf.saxon.event.ProxyReceiver

com.saxonica.ee.validate.ValidatingFilter

com.saxonica.ee.validate.ContentValidator

All Implemented Interfaces:

javax.xml.transform.Result, Receiver

Direct Known Subclasses:

AttributeValidator, LaxValidator, SkipValidator

public abstract class ContentValidator
extends ValidatingFilter

This class is an abstract superclass for all the validators. The class includes factory methods for constructing a validator.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ContentValidator.Nillability

Field Summary

Fields

Modifier and Type	Field and Description
protected ContentValidator	childValidator
protected boolean	nil
protected java.util.List<java.lang.String>	pendingMessages

Fields inherited from class com.saxonica.ee.validate.ValidatingFilter

locallyInvalid

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

nextReceiver

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

pipelineConfiguration, previousAtomic, systemId

Fields inherited from interface javax.xml.transform.Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

Constructors

Constructor and Description
ContentValidator(Receiver next)

Method Summary

Modifier and Type	Method and Description
protected void	checkNoCharactersWhenNil(Location location) Character content was encountered; check that this does not conflict with an xsi:nil=true attribute
protected void	checkNoChildrenWhenNil(Location location) A child element was encountered; check that this does not conflict with an xsi:nil=true attribute
void	endDocument() Notify the end of a document node
protected SchemaType	getAnnotation() Get the type annotation code to be used on elements validated by this validator
protected abstract ContentValidator	getChildValidator() Get a validator to handle the children of the current element.
StructuredQName	getContainingElement() Get the name of the element being validated (for diagnostics).
Location	getContainingElementLocationId() Get the location of the element being validated
protected java.lang.String	getContainingElementName() Get the containing element name, for use in error messages.
protected ElementDecl	getElementDeclaration() Get the element declaration that this validator is validating against
NamespaceResolver	getNamespaceResolver() Get the namespace resolver
ContentValidator.Nillability	getNillability() Determine whether this type permits xsi:nil = true BlockCom
abstract SchemaType	getSchemaType() Get the schema type against which we are validating, if any
boolean	isNil() Determine whether xsi:nil = true was set on this element
protected void	makeChildValidator(ElementDecl decl, StructuredQName elementName, Location locationId, int process) Make a validator for the children of the element whose start tag is currently being processed.
static ContentValidator	makeValidator(ElementDecl decl, StructuredQName elementName, Location locationId, ValidationContext validationContext, SchemaType governingType, int validation, PipelineConfiguration pipe, Receiver nextReceiver, java.util.List<ValidationFailure> failures) Factory method to make a validator for a particular element
static ContentValidator	makeValidatorForType(ElementDecl elementDecl, SchemaType schemaType, PipelineConfiguration pipe, Receiver nextReceiver, java.util.List<ValidationFailure> failures) Factory method to create a validator for elements of a given type
protected void	setAnnotation(SchemaType annotation) Set the type annotation code to be allocated by this validator
void	setContainingElement(StructuredQName name, Location locationId) Set the name of the containing element (for diagnostics)
protected void	setElementDeclaration(ElementDecl decl) Set the element declaration that this validator is validating against
void	setNillability(ContentValidator.Nillability nillability) Set whether this type permits xsi:nil = true
void	startElement(NodeName nameCode, SchemaType typeCode, Location location, int properties) Handle the start tag for a child element of the element being validated

Methods inherited from class com.saxonica.ee.validate.ValidatingFilter

append, getConstraintChecker, getStartTagBuffer, getValidationContext, reportIfInvalid, reportValidationError, setConstraintChecker, setStartTagBuffer, setValidationContext, usesTypeAnnotations

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

attribute, characters, close, comment, endElement, getNamePool, getNextReceiver, namespace, open, processingInstruction, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startContent, startDocument

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

append, decompose, flatten, getConfiguration, getErrorCodeForDecomposingFunctionItems, getPipelineConfiguration, getSystemId, handlesAppend

Methods inherited from class java.lang.Object

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

Field Detail

childValidator

protected ContentValidator childValidator

nil

protected boolean nil

pendingMessages

protected java.util.List<java.lang.String> pendingMessages

Constructor Detail

ContentValidator

public ContentValidator(Receiver next)

Method Detail

setContainingElement

public void setContainingElement(StructuredQName name,
                                 Location locationId)

Set the name of the containing element (for diagnostics)

Parameters:

name - identifies the name of the containing element

locationId - identifies the location of the containing element

setElementDeclaration

protected void setElementDeclaration(ElementDecl decl)

Set the element declaration that this validator is validating against

Parameters:

decl - the element declaration

getElementDeclaration

protected ElementDecl getElementDeclaration()

Get the element declaration that this validator is validating against

Returns:

the element declaration

getContainingElement

public StructuredQName getContainingElement()

Get the name of the element being validated (for diagnostics).

Returns:

the element name, or null if not available.

getContainingElementLocationId

public Location getContainingElementLocationId()

Get the location of the element being validated

Returns:

the location, or 0 if not available

getContainingElementName

protected java.lang.String getContainingElementName()

Get the containing element name, for use in error messages.

Returns:

the name of the containing element (plus surrounding punctuation), or the string "element" if not available

getSchemaType

public abstract SchemaType getSchemaType()

Get the schema type against which we are validating, if any

Returns:

the schema type that this validator is validating against, or null

setAnnotation

protected final void setAnnotation(SchemaType annotation)

Set the type annotation code to be allocated by this validator

Parameters:

annotation - the integer fingerprint of the name of the type

getAnnotation

protected final SchemaType getAnnotation()

Get the type annotation code to be used on elements validated by this validator

Returns:

the integer fingerprint of the name of the type

getNamespaceResolver

public NamespaceResolver getNamespaceResolver()

Get the namespace resolver

Returns:

the namespace resolver

setNillability

public void setNillability(ContentValidator.Nillability nillability)

Set whether this type permits xsi:nil = true

Parameters:

nillability - one of ContentValidator.Nillability.IGNORED, ContentValidator.Nillability.ALLOWED, ContentValidator.Nillability.DISALLOWED

getNillability

public ContentValidator.Nillability getNillability()

Determine whether this type permits xsi:nil = true BlockCom

Returns:

one of ContentValidator.Nillability.IGNORED, ContentValidator.Nillability.ALLOWED, ContentValidator.Nillability.DISALLOWED

isNil

public boolean isNil()

Determine whether xsi:nil = true was set on this element

Returns:

true if xsi:nil="true" was set

startElement

public void startElement(NodeName nameCode,
                         SchemaType typeCode,
                         Location location,
                         int properties)
                  throws XPathException

Handle the start tag for a child element of the element being validated

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 - the element's type annotation.

location - a location associated with the event (typically either a location in the source document or the stylesheet)

properties - properties of the element node

Throws:

XPathException - if an error occurs

makeValidator

public static ContentValidator makeValidator(ElementDecl decl,
                                             StructuredQName elementName,
                                             Location locationId,
                                             ValidationContext validationContext,
                                             SchemaType governingType,
                                             int validation,
                                             PipelineConfiguration pipe,
                                             Receiver nextReceiver,
                                             java.util.List<ValidationFailure> failures)
                                      throws MissingComponentException

Factory method to make a validator for a particular element

Parameters:

decl - the element declaration to validate against. May be null.

elementName - the name of the element (used only for diagnostics)

locationId - the location of the element, or of the stylesheet instruction that generated this element (or zero)

validationContext - information about the validation episode

governingType - the type identified by xsi:type, if specified; otherwise null

validation - the validation mode (strict, lax, preserve, strip)

pipe - the pipeline configuration

nextReceiver - the next receiver in the pipeline

failures - a list which the method will populate with ValidationFailure objects in the event that a validity error is detected. (This is used to avoid throwing exceptions in the case where validation failures are a normal event)

Returns:

a Validator suitable for validating the content of this element

Throws:

MissingComponentException

getChildValidator

protected abstract ContentValidator getChildValidator()

Get a validator to handle the children of the current element. This is called immediately on return from the startElement call that starts this element.

Returns:

the validator to be used to handle the children

makeValidatorForType

public static ContentValidator makeValidatorForType(ElementDecl elementDecl,
                                                    SchemaType schemaType,
                                                    PipelineConfiguration pipe,
                                                    Receiver nextReceiver,
                                                    java.util.List<ValidationFailure> failures)
                                             throws MissingComponentException

Factory method to create a validator for elements of a given type

Parameters:

elementDecl - the element declaration if available, otherwise null (there will be no element declaration, for example, when doing lax validation against an xsi:type)

schemaType - the simple or complex type against which the content of the element is to be validated

pipe - the pipeline configuration

nextReceiver - the next receiver in the pipeline

failures - a list which the method will populate with any validity errors discovered by the method

Returns:

a Validator that can sit in the event pipeline to perform local validation of elements declared to have this type, or null if any validity errors were found

Throws:

MissingComponentException - if validation requires components that are missing from the schema. Note that unresolved references are errors only if the component is actually used, so they are detected during validation.

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 - if an error occurs

makeChildValidator

protected void makeChildValidator(ElementDecl decl,
                                  StructuredQName elementName,
                                  Location locationId,
                                  int process)
                           throws XPathException

Make a validator for the children of the element whose start tag is currently being processed. This will always set some kind of validator for the children in the field childValidator, even if the method fails

Parameters:

decl - the element declaration for this element, if applicable

elementName - the name of this element, used for diagnostics

locationId - location information, used for diagnostics

Throws:

XPathException - if a validation error occurs and if recovery from validation errors has not been requested. The error will always have been reported.

checkNoChildrenWhenNil

protected void checkNoChildrenWhenNil(Location location)
                               throws XPathException

A child element was encountered; check that this does not conflict with an xsi:nil=true attribute

Parameters:

location - the location to be used in any error report

Throws:

XPathException - if processing should terminate, for example because of too many errors

checkNoCharactersWhenNil

protected void checkNoCharactersWhenNil(Location location)
                                 throws XPathException

Character content was encountered; check that this does not conflict with an xsi:nil=true attribute

Parameters:

location - the location to be used in any error report

Throws:

XPathException - if processing should terminate, for example because of too many errors