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## com.saxonica.schema
Class ModelGroupDefinition

    java.lang.Object
      com.saxonica.schema.SchemaStructure
          com.saxonica.schema.ModelGroup
              com.saxonica.schema.ModelGroupDefinition

All Implemented Interfaces:
  SerializableSchemaComponent, Term, UserSchemaComponent, java.io.Serializable, javax.xml.transform.SourceLocator, SchemaComponent

    public class ModelGroupDefinition

extends ModelGroup
implements SerializableSchemaComponent

A Model Group Definition: a schema component corresponding to a top-level (named) xs:group element in a schema document.

See Also:
  Serialized Form

Field Summary

Fields inherited from class com.saxonica.schema.ModelGroup
`contentModel`

Fields inherited from interface net.sf.saxon.type.SchemaComponent
`FIXED_UP, INCOMPLETE, INVALID, UNVALIDATED, VALIDATED, VALIDATING`

Constructor Summary
`ModelGroupDefinition(SchemaAwareConfiguration config, javax.xml.transform.SourceLocator locator)` Creates a new Model Group definition

Method Summary
`java.lang.String` | `getCompositorName()` Get the name of the compositor used in this model group
`int` | `getFingerprint()`
`java.lang.String` | `getName()` Returns the local part of the name of this named Group.
`int` | `getNameCode()`
`java.lang.String` | `getTargetNamespace()` Returns the namespace URI of the name of this named Group.
`boolean` | `isEmptiable()` Determine if empty content is allowed
`boolean` | `isPointless(Particle container)` Test whether the compositor is pointless, as described in XML Schema Part 1 Schema Component Constraint: Particle Valid (Restriction)
`boolean` | `isSameGroup(ModelGroupDefinition other)` Test whether this is the same group as another group.
`void` | `lookForCycles(java.util.Stack references, SchemaCompiler compiler)` This method is called to look for cycles.
`void` | `serialize(SchemaModelSerializer serializer)` Serialize the schema component
`void` | `setNameCode(int nameCode)`
`void` | `setRedefinedModelGroupDefinition(ModelGroupDefinition other)` Set the model group definition that this one redefines.
`boolean` | `validate(SchemaCompiler compiler)` Checks the validity of this Model Group Definition.

Methods inherited from class com.saxonica.schema.ModelGroup
`addParticle, checkElements, compile, containsAll, fixup, gatherAllPermittedElements, getContentModelSize, getElementParticleCardinality, getElementParticleType, getListOfParticles, getSimplifiedContentModel, getTerm, isEmpty, isPointless, iterateParticles, markVulnerableSubParticles, setContentModel`

Methods inherited from class com.saxonica.schema.SchemaStructure
`elaborate, getColumnNumber, getConfiguration, getFixupStatus, getLineNumber, getPublicId, getSystemId, getValidationStatus, setConfiguration, setFixupStatus, setLineNumber, setLocator, setSystemId, setValidationStatus`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface com.saxonica.schema.UserSchemaComponent
`elaborate`

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

Constructor Detail

### ModelGroupDefinition

    public ModelGroupDefinition(SchemaAwareConfiguration config,
                                javax.xml.transform.SourceLocator locator)

  Creates a new Model Group definition

  Parameters:
    `config` - the Configuration to which this Model Group definition belongs
    `locator` - the source location of the model group definition

Method Detail

### setRedefinedModelGroupDefinition

    public void setRedefinedModelGroupDefinition(ModelGroupDefinition other)

  Set the model group definition that this one redefines. Only set if this is a redefining model group that does not contain a self-reference; in this case validate() must check that it is a valid refinement

  Parameters:
    `other` - the model group that this one redefines

### getNameCode

    public int getNameCode()

### getFingerprint

    public int getFingerprint()

### setNameCode

    public void setNameCode(int nameCode)

### getName

    public java.lang.String getName()

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

  Returns:
    the local name of this named Group.

### getTargetNamespace

    public java.lang.String getTargetNamespace()

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

  Returns:
    the namespace URI of this named Group: null if the group is in no namespace

### isEmptiable

    public boolean isEmptiable()
                        throws UnresolvedReferenceException

  Determine if empty content is allowed

  Specified by:
    `isEmptiable` in class `ModelGroup`
  Returns:
    true if the content model of the model group allows empty content
  Throws:
    `UnresolvedReferenceException`

### isPointless

    public boolean isPointless(Particle container)

  Test whether the compositor is pointless, as described in XML Schema Part 1 Schema Component Constraint: Particle Valid (Restriction)

  Parameters:
    `container` - the particle that contains this model group definition
  Returns:
    true if this compositor is pointless

### lookForCycles

    public void lookForCycles(java.util.Stack references,
                              SchemaCompiler compiler)
                       throws SchemaException,
                              UnresolvedReferenceException

  This method is called to look for cycles. The object implementing this method is required (a) to raise an exception if the object itself appears in the list of references, (b) to add itself to the list of references, and (c) to call the lookForCycles method on all the objects that it references.

  Specified by:
    `lookForCycles` in interface `UserSchemaComponent`
  Overrides:
    `lookForCycles` in class `ModelGroup`
  Parameters:
    `references` - A list of objects that contain direct or indirect references to this object, and that must therefore not be referred to from this object.
    `compiler` - used for error reporting
  Throws:
    `SchemaException`
    `UnresolvedReferenceException`

### validate

    public boolean validate(SchemaCompiler compiler)
                     throws SchemaException

  Checks the validity of this Model Group Definition.

  Specified by:
    `validate` in interface `UserSchemaComponent`
  Overrides:
    `validate` in class `ModelGroup`
  Returns:
    true when this Schema definition is valid, otherwise false.
  Throws:
    `SchemaException`

### isSameGroup

    public boolean isSameGroup(ModelGroupDefinition other)

  Test whether this is the same group as another group. They are considered to be the same type 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 other group
  Returns:
    true if the groups are the same

### serialize

    public void serialize(SchemaModelSerializer serializer)
                   throws XPathException

  Serialize the schema component

  Specified by:
    `serialize` in interface `SerializableSchemaComponent`
  Overrides:
    `serialize` in class `ModelGroup`
  Parameters:
    `serializer` - used to receive the serialized output
  Throws:
    `XPathException`

### getCompositorName

    public java.lang.String getCompositorName()

  Description copied from class: `ModelGroup`
  Get the name of the compositor used in this model group

  Specified by:
    `getCompositorName` in class `ModelGroup`
  Returns:
    one of "sequence", "choice", or "all"

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