com.saxonica.schema
Class AttributeGroupReference

java.lang.Object
  |
  +--com.saxonica.schema.SchemaElement
        |
        +--com.saxonica.schema.AttributeGroup
              |
              +--com.saxonica.schema.AttributeGroupReference

All Implemented Interfaces:

CircularityChecker, SchemaComponent, SchemaDeclaration, java.io.Serializable, javax.xml.transform.SourceLocator

public final class AttributeGroupReference

extends AttributeGroup

implements SchemaComponent, CircularityChecker

An XML Schema Attribute Group Reference, corresponding to an xs:attributeGroup element with a 'ref' attribute.

See Also:

Serialized Form

Field Summary

 

Fields inherited from class com.saxonica.schema.SchemaElement

ANNOTATION, ANYTYPE, APPINFO, ATTRIBUTE, ATTRIBUTE_GROUP, COMPLEX_CONTENT, COMPLEX_TYPE, COMPOSITOR, DOCUMENTATION, ELEMENT, FACET, GROUP, IDENTITY_FIELD, IDENTITY_SELECTOR, KEY, KEYREF, LIST, REDEFINE, SCHEMA, SIMPLE_CONTENT, SIMPLE_TYPE, UNION, UNIQUE, UNKNOWN, WILDCARD_ATTRIBUTE, WILDCARD_ELEMENT

 

Constructor Summary

AttributeGroupReference(Schema schema, int fingerprint)           Creates a new AttributeGroup reference

 

Method Summary
boolean	fixup(Schema schema)           Fixup the reference to the relevant attribute group.
java.util.Iterator	getAttributes()           Returns an enumeration of the AttributeDecls and AttributeGroups of this AttributeGroup
AttributeWildcard	getAttributeWildcard()           Returns the attribute wildcard in the referenced attribute group, if any.
boolean	isEmpty()           Returns true if this AttributeGroup does not contain any AttributeDecls or any non-empty AttributeGroups
void	lookForCycles(Schema schema, java.util.Stack references)           Check for cycles in the attribute group.
AttributeGroupDecl	resolveReference()           Resolves the attribute group reference
boolean	validate(Schema schema)           Checks the validity of this Schema component.

 

Methods inherited from class com.saxonica.schema.AttributeGroup

getAttributeUse, getDeclaredAttributes, getFingerprint, getId, getSchema, getStructureType, setFingerprint, setId, setSchema

 

Methods inherited from class com.saxonica.schema.SchemaElement

getColumnNumber, getLineNumber, getPublicId, getSystemId, setLocator

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

AttributeGroupReference

public AttributeGroupReference(Schema schema,
                               int fingerprint)

Creates a new AttributeGroup reference

Parameters:

schema - the Schema that this AttributeGroup belongs to.

fingerprint - The NamePool fingerprint of the name of the attribute group (that is, the name contained in the 'ref' attribute)

getAttributeWildcard

public AttributeWildcard getAttributeWildcard()

Returns the attribute wildcard in the referenced attribute group, if any.

Specified by:

getAttributeWildcard in class AttributeGroup

Returns:

the the attribute wildcard (xs:anyAttribute element) in the referenced attribute group, if there is one; otherwise null.

fixup

public boolean fixup(Schema schema)
              throws SchemaException

Fixup the reference to the relevant attribute group. For internal use only.

Specified by:

fixup in interface SchemaComponent

Parameters:

schema - The containing schema (for error reporting)

Returns:

true if no errors were found. If there were errors, these are reported to the error listener, and the function returns false.

SchemaException

validate

public boolean validate(Schema schema)
                 throws javax.xml.transform.TransformerException

Checks the validity of this Schema component. For internal use only.

Specified by:

validate in interface SchemaComponent

Parameters:

schema - if this is not null, any errors that are detected should be reported using the error() method of this schema.

Returns:

true when this Schema definition is valid, otherwise false.

Throws:

javax.xml.transform.TransformerException - if the ErrorListener decides that an error is fatal.

lookForCycles

public void lookForCycles(Schema schema,
                          java.util.Stack references)
                   throws SchemaException

Check for cycles in the attribute group. For internal use only.

Specified by:

lookForCycles in interface CircularityChecker

Overrides:

lookForCycles in class AttributeGroup

Parameters:

schema - The containing schema, used for error reporting.

references - A list of attribute groups that reference this one, directly or indirectly.

Throws:

SchemaException - if a circularity is detected.

resolveReference

public AttributeGroupDecl resolveReference()

Resolves the attribute group reference

Returns:

the attribute group defined at the schema level that is refered to by this class. May return null if called on an invalid schema containing a dangling reference.

getAttributes

public java.util.Iterator getAttributes()

Returns an enumeration of the AttributeDecls and AttributeGroups of this AttributeGroup

Specified by:

getAttributes in class AttributeGroup

Returns:

an Enumeration of the AttributeDecls and AttributeGroups of this AttributeGroup

isEmpty

public boolean isEmpty()

Returns true if this AttributeGroup does not contain any AttributeDecls or any non-empty AttributeGroups

Returns:

true if this AttributeGroup does not contain any AttributeDecls or any non-empty AttributeGroups