Package 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.

  • Constructor Details

    • AttributeGroupDecl

      public AttributeGroupDecl(EnterpriseConfiguration config)
      Creates a new AttributeGroup definition. For internal use only.
      Parameters:
      config - the EnterpriseConfiguration that this AttributeGroup belongs to.

  • Method Details

    • 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 NamespaceUri 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<SchemaComponent> 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)
      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

    • 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
      Overrides:
      validate in class SchemaStructure
      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:
      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 FunctionItem 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
      Overrides:
      getComponentAsFunction in class SchemaStructure
      Returns:
      the schema component represented as a function from property names to property values.