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.

Field Summary

Fields

Modifier and Type	Field and Description
protected ContentValidator	childValidator
protected boolean	nil
static int	NIL_ALLOWED Constant indicating that xsi:nil is allowed and active.
static int	NIL_DISALLOWED Constant indicating that xsi:nil is disallowed.
static int	NIL_IGNORED Constant indicating that xsi:nil is allowed but ignored; this is true when we are validating against a type, rather than against an element declaration
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
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
int	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(int 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, getUnderlyingReceiver, namespace, open, processingInstruction, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startContent, startDocument

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

append, getConfiguration, getPipelineConfiguration, getSystemId, isTrueSequenceReceiver

Methods inherited from class java.lang.Object

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

Field Detail

NIL_IGNORED

public static final int NIL_IGNORED

Constant indicating that xsi:nil is allowed but ignored; this is true when we are validating against a type, rather than against an element declaration

See Also:

Constant Field Values

NIL_ALLOWED

public static final int NIL_ALLOWED

Constant indicating that xsi:nil is allowed and active. That is, we are validating against an element declaration that specifies nillable=true

See Also:

Constant Field Values

NIL_DISALLOWED

public static final int NIL_DISALLOWED

Constant indicating that xsi:nil is disallowed. That is, we are validating against an element declaration that specifies nillable=false

See Also:

Constant Field Values

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(int nillability)

Set whether this type permits xsi:nil = true

Parameters:

nillability - one of NIL_IGNORED, NIL_ALLOWED, NIL_DISALLOWED

getNillability

public int getNillability()

Determine whether this type permits xsi:nil = true BlockCom

Returns:

one of NIL_IGNORED, NIL_ALLOWED, NIL_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 - integer code identifying the element's type within the name pool.

location - an object providing information about the module, line, and column where the node originated

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:

SchemaException - 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.

MissingComponentException

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.