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## com.saxonica.schema
Class SequenceModelGroup

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

All Implemented Interfaces:
  Term, UserSchemaComponent, Serializable, SourceLocator, SchemaComponent

    public class SequenceModelGroup

extends ModelGroup

A SequenceCompositor represents an xs:sequence element in the schema

See Also:
  Serialized Form

Field Summary

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

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

Constructor Summary
`SequenceModelGroup()`

Method Summary
`String` | `getCompositorName()` Get the name of this compositor
`boolean` | `isEmptiable()` Determine if empty content is allowed
`boolean` | `isPointless(ModelGroup container)` Test whether the compositor is pointless, as described in XML Schema Part 1 Schema Component Constraint: Particle Valid (Restriction)
`boolean` | `validate(SchemaCompiler compiler)` Checks the validity of this Compositor definition.

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

Methods inherited from class com.saxonica.schema.SchemaStructure
`elaborate, getColumnNumber, getConfiguration, getFixupStatus, getLineNumber, getPublicId, getRedefinitionLevel, getSchemaDocumentURI, getSystemId, getValidationStatus, 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 com.saxonica.schema.UserSchemaComponent
`elaborate`

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

Constructor Detail

### SequenceModelGroup

    public SequenceModelGroup()

Method Detail

### 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` - if the schema contains unresolved references to required components

### isPointless

    public boolean isPointless(ModelGroup container)

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

  Overrides:
    `isPointless` in class `ModelGroup`
  Parameters:
    `container` - not used
  Returns:
    true if the particle is pointless (which effectively means it can't match anything)

### validate

    public boolean validate(SchemaCompiler compiler)
                     throws SchemaException

  Checks the validity of this Compositor definition.

  Specified by:
    `validate` in interface `UserSchemaComponent`
  Overrides:
    `validate` in class `ModelGroup`
  Returns:
    true when this Schema definition is valid, otherwise false.
  Throws:
    `SchemaException` - when the error listener decides an error is fatal

### getCompositorName

    public String getCompositorName()

  Get the name of this compositor

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

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Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.