com.saxonica.ee.schema

Class AttributeGroupDecl

java.lang.Object

com.saxonica.ee.schema.SchemaStructure

com.saxonica.ee.schema.AttributeGroupDecl

All Implemented Interfaces:

SerializableSchemaComponent, UserSchemaComponent, SourceLocator, Location, SchemaComponent, Locator

public final class AttributeGroupDecl
extends SchemaStructure
implements UserSchemaComponent, SerializableSchemaComponent

An XML Schema Attribute Group Declaration. This represents a named attribute group, but not an attribute group reference. As well as attribute groups explicitly written in the schema using xsl:attributeGroup, this class is also used to represent any collection of attributes defined using xsl:attribute elements as part of a complex type definition.

In contrast with the Attribute Group Definition schema component as defined in the W3C specification, the model retains explicit references to subsidiary attribute group definitions. However, the method getAttributeUses() performs the transitive closure of these references, returning all the attributes at the leaves of the tree.

Field Summary

Fields inherited from interface net.sf.saxon.type.SchemaComponent

COMPONENT_FUNCTION_TYPE, FIXED_UP, INCOMPLETE, INVALID, UNVALIDATED, VALIDATED, VALIDATING

Constructor Summary

Constructors

Constructor and Description
AttributeGroupDecl(EnterpriseConfiguration config) Creates a new AttributeGroup definition.

Method Summary

Methods

Modifier and Type	Method and Description
void	addAttributeGroupReference(AttributeGroupReference attrGroup) Adds the given AttributeGroupReference to this AttributeGroup.
void	addAttributeUse(AttributeUse use) Add the given attribute use to this AttributeGroup.
void	buildCounterMap() Build the counter map
void	elaborate(SchemaCompiler compiler) Elaborate the schema component: after reloading a serialized schema component model, this expands the component with derived information needed during validation episodes.
boolean	fixup(SchemaCompiler compiler) Check references from this component to other components
StructuredQName	getAttributeGroupName() Get the name of this attribute group, as a qualified name
AttributeUse	getAttributeUse(StructuredQName attributeName) Get the attribute use with a specific name, if there is one.
List<AttributeUse>	getAttributeUses() Returns a list of all the attribute uses of this attribute group.
AttributeWildcard	getAttributeWildcard(SchemaCompiler compiler) Get the complete attribute wildcard used in this attribute group.
protected AttributeWildcard	getAttributeWildcard(SchemaCompiler compiler, Stack<AttributeGroupDecl> stack)
Function	getComponentAsFunction() Get the schema component in the form of a function item.
IntToIntMap	getCounterMap() Get the counter map used to map attribute names to positions in an array of counters used during instance validation
IntHashMap<AttributeUse>	getDeclaredAttributes() Get a HashMap containing all the attributes in this attribute group, expanded recursively.
String	getDisplayName() Return the name of this AttributeGroup, for display purposes
List<AttributeGroupReference>	getLocalAttributeGroupReferences() Returns the AttributeGroup references contained locally in this attribute group.
List<AttributeUse>	getLocalAttributes() Returns the attributes defined locally in this attribute group.
AttributeWildcard	getLocalAttributeWildcard() Get the local attribute wildcard used in this attribute group
String	getName() Returns the local part of the name of this named AttributeGroup.
String	getTargetNamespace() Returns the namespace URI of the name of this named AttributeGroup.
boolean	isSameDeclaration(AttributeGroupDecl other) Test whether this is the same attribute group as another.
boolean	isValidRestriction(AttributeGroupDecl base, SchemaCompiler compiler) Test whether this attribute group is a valid restriction of another attribute group.
void	lookForCycles(Stack references, SchemaCompiler compiler) Check for cycles in the attribute group.
void	serialize(SchemaModelSerializer serializer) Serialize the schema component
void	serializeContents(SchemaModelSerializer serializer) Serialize the list of attribute users and wildcard
void	setAnyAttribute(AttributeWildcard wildcard) Sets the wildcard (anyAttribute) of this attribute Group.
void	setAttributeGroupName(StructuredQName name) Set the name of this attribute group.
void	setRedefinedAttributeGroupDecl(AttributeGroupDecl other) Set the attribute group that this attribute group redefines.
boolean	validate(SchemaCompiler compiler) Check the validity of this AttributeGroup declaration.

Methods inherited from class com.saxonica.ee.schema.SchemaStructure

getColumnNumber, getConfiguration, getFixupStatus, getLineNumber, getPublicId, getRedefinitionLevel, getSchemaDocumentURI, getSystemId, getValidationStatus, makeXPathExpressionPropertyRecord, saveLocation, setConfiguration, setFixupStatus, setLineNumber, setLocator, setRedefinitionLevel, setSchemaDocumentURI, setSystemId, setValidationStatus

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.saxon.type.SchemaComponent

getRedefinitionLevel, getValidationStatus

Constructor Detail

AttributeGroupDecl

public AttributeGroupDecl(EnterpriseConfiguration config)

Creates a new AttributeGroup definition. For internal use only.

Parameters:

config - the EnterpriseConfiguration that this AttributeGroup belongs to.

Method Detail

getAttributeGroupName

public StructuredQName getAttributeGroupName()

Get the name of this attribute group, as a qualified name

Returns:

the expanded name of this attribute group

getName

public String getName()

Returns the local part of the name of this named AttributeGroup.

Returns:

the local name of this named AttributeGroup.

getTargetNamespace

public String getTargetNamespace()

Returns the namespace URI of the name of this named AttributeGroup.

Returns:

the namespace URI of this named AttributeGroup: null if the attribute group is in no namespace

addAttributeUse

public void addAttributeUse(AttributeUse use)

Add the given attribute use to this AttributeGroup. Doesn't throw an error if it's a duplicate: this is left until validation time. For internal use only.

Parameters:

use - the AttributeUse to add

addAttributeGroupReference

public void addAttributeGroupReference(AttributeGroupReference attrGroup)

Adds the given AttributeGroupReference to this AttributeGroup. For internal use only.

Parameters:

attrGroup - the AttributeGroupReference to add

setRedefinedAttributeGroupDecl

public void setRedefinedAttributeGroupDecl(AttributeGroupDecl other)

Set the attribute group that this attribute group redefines. This is called only for an attribute group that redefined another one, *without* a self-reference

Parameters:

other - the attribute group declaration that this attribute group redefines

getLocalAttributes

public List<AttributeUse> getLocalAttributes()

Returns the attributes defined locally in this attribute group. (not those of the nested groups)

Returns:

the attribute uses defined locally in this attribute group.

getLocalAttributeGroupReferences

public List<AttributeGroupReference> getLocalAttributeGroupReferences()

Returns the AttributeGroup references contained locally in this attribute group. (not those of the nested groups)

Returns:

the locally-defined attribute groups.

lookForCycles

public void lookForCycles(Stack references,
                 SchemaCompiler compiler)
                   throws SchemaException

Check for cycles in the attribute group.

Specified by:

lookForCycles in interface UserSchemaComponent

Overrides:

lookForCycles in class SchemaStructure

Parameters:

references - The attribute groups that contain direct or indirect references to this attribute group

compiler - used to report errors and warnings

Throws:

SchemaException - if a circularity is detected.

getLocalAttributeWildcard

public AttributeWildcard getLocalAttributeWildcard()

Get the local attribute wildcard used in this attribute group

Returns:

the wildcard used in this complexType if there is one; otherwise return null.

getAttributeWildcard

public AttributeWildcard getAttributeWildcard(SchemaCompiler compiler)
                                       throws MissingComponentException

Get the complete attribute wildcard used in this attribute group. This takes into account any attribute wildcards used in contained attribute groups. The rules are given in Schema Part 1 section 3.4.2. The returned wildcard is the intersection of the attribute wildcards in the various attribute groups: that is, a wildcard that allows only what each one of these wildcards allows.

Parameters:

compiler - Used for error reporting. May be null if used at validation time.

Returns:

the combined wildcard used in this attribute group. This can be null. It can also be "inexpressible". This results in an AttributeWildcard marked as being inexpressible, an error condition that the caller is left to deal with.

Throws:

MissingComponentException - if a required component contains a reference to another component that is not present in the schema

getAttributeWildcard

protected AttributeWildcard getAttributeWildcard(SchemaCompiler compiler,
                                     Stack<AttributeGroupDecl> stack)
                                          throws MissingComponentException

Throws:

MissingComponentException

getAttributeUses

public List<AttributeUse> getAttributeUses()
                                    throws MissingComponentException

Returns a list of all the attribute uses of this attribute group. The list includes attributes from all attribute groups references contained in this AttributeGroup.

Returns:

all the attributes of this attribute group, expanded recursively. The list does not include attribute wildcards.

Throws:

MissingComponentException

getCounterMap

public IntToIntMap getCounterMap()

Get the counter map used to map attribute names to positions in an array of counters used during instance validation

Returns:

the counter map. This is available at any time after validate() is called. The counter map maps the fingerprints of the attributes defined in this attribute group to a sequence of consecutive integers that can be used to index into an array of counters.

getDisplayName

public String getDisplayName()

Return the name of this AttributeGroup, for display purposes

Returns:

the name of this AttributeGroup, or null, if no name was defined.

setAnyAttribute

public void setAnyAttribute(AttributeWildcard wildcard)

Sets the wildcard (anyAttribute) of this attribute Group. It is the caller's responsibility to ensure that only one attribute wildcard is defined in an attribute group.

Parameters:

wildcard - the wildcard defining the xs:anyAttribute content of this attribute group, if any.

fixup

public boolean fixup(SchemaCompiler compiler)
              throws SchemaException

Check references from this component to other components

Specified by:

fixup in interface UserSchemaComponent

Overrides:

fixup in class SchemaStructure

Parameters:

compiler - used for reporting errors and warnings

Returns:

true if all is well, false if errors found

Throws:

SchemaException

validate

public boolean validate(SchemaCompiler compiler)
                 throws SchemaException

Check the validity of this AttributeGroup declaration. For internal use only. Any errors found are reported to the error listener.

Specified by:

validate in interface UserSchemaComponent

Parameters:

compiler - used for reporting errors and warnings

Returns:

true if the declaration is valid, false if not

Throws:

SchemaException - if this Attribute declaration is invalid and the error listener chooses to treat the error as fatal.

buildCounterMap

public void buildCounterMap()
                     throws MissingComponentException

Build the counter map

Throws:

MissingComponentException

isValidRestriction

public boolean isValidRestriction(AttributeGroupDecl base,
                         SchemaCompiler compiler)
                           throws SchemaException

Test whether this attribute group is a valid restriction of another attribute group. If it is not a valid restriction, an error is reported to the error listener and the method returns false.

Parameters:

base - the other attribute group

compiler - user for reporting errors and warnings

Returns:

true if this is a valid restriction, false if not

Throws:

SchemaException - if an error is detected and the error listener decides to treat the error as fatal.

isSameDeclaration

public boolean isSameDeclaration(AttributeGroupDecl other)

Test whether this is the same attribute group as another. They are considered to be the same component if they are derived from the same type definition in the original XML representation (which can happen when there are multiple includes of the same file)

Parameters:

other - the attribute group declaration that we are comparing with

Returns:

true if the two attribute group declarations are identical

setAttributeGroupName

public void setAttributeGroupName(StructuredQName name)

Set the name of this attribute group. For internal use only.

Parameters:

name - the name of this attribute group

getDeclaredAttributes

public IntHashMap<AttributeUse> getDeclaredAttributes()
                                               throws MissingComponentException

Get a HashMap containing all the attributes in this attribute group, expanded recursively. The key is the integer fingerprint identifying the name of the attribute. The value is an AttributeUse object identifying the attribute declaration.

Returns:

a map defining the attributes in the attribute group

Throws:

MissingComponentException

getAttributeUse

public final AttributeUse getAttributeUse(StructuredQName attributeName)
                                   throws MissingComponentException

Get the attribute use with a specific name, if there is one. Otherwise return null.

Parameters:

attributeName - the expanded name of the required attribute in the name pool.

Returns:

the attribute with a given name, from among the transitively-expanded definition of this attribute group.

Throws:

MissingComponentException

serialize

public void serialize(SchemaModelSerializer serializer)
               throws XPathException

Serialize the schema component

Specified by:

serialize in interface SerializableSchemaComponent

Parameters:

serializer - the object responsible for performing the serialization

Throws:

MissingComponentException - if the component cannot be serialized because it contains dangling references

XPathException - if serialization fails

serializeContents

public void serializeContents(SchemaModelSerializer serializer)
                       throws XPathException

Serialize the list of attribute users and wildcard

Parameters:

serializer - the object to which the information is to be sent

Throws:

XPathException - if a failure occurs

elaborate

public void elaborate(SchemaCompiler compiler)
               throws SchemaException

Elaborate the schema component: after reloading a serialized schema component model, this expands the component with derived information needed during validation episodes. The model is assumed to be valid.

Specified by:

elaborate in interface UserSchemaComponent

Overrides:

elaborate in class SchemaStructure

Parameters:

compiler - the schema compiler

Throws:

SchemaException

getComponentAsFunction

public Function getComponentAsFunction()

Description copied from interface: SchemaComponent

Get the schema component in the form of a function item. This allows schema information to be made visible to XSLT or XQuery code. The function makes available the contents of the schema component as defined in the XSD specification. The function takes a string as argument representing a property name, and returns the corresponding property of the schema component. There is also a property "class" which returns the kind of schema component, for example "Attribute Declaration".

Specified by:

getComponentAsFunction in interface SchemaComponent

Returns:

the schema component represented as a function from property names to property values.