public TableSchema(DataModelSchema dataModelSchema, XmlSchemaElement xmlSchemaElement)
: base(dataModelSchema, xmlSchemaElement)
{
// Initialize the object.
this.DataModelSchema = dataModelSchema;
this.Name = xmlSchemaElement.Name;
this.QualifiedName = xmlSchemaElement.QualifiedName;
this.IsPersistent = GetIsPersistentAttribute(xmlSchemaElement);
this.Columns = new ColumnSchemaCollection();
this.Constraints = new ConstraintSchemaCollection();
this.Keys = new List <ConstraintSchema>();
this.ParentKeyrefs = new List <KeyrefSchema>();
this.TypeSchema = GetTypeSchema(xmlSchemaElement);
GetColumns(xmlSchemaElement.SchemaType, this.Columns);
Constraints.ItemAdded += new ConstraintEvent(ConstraintAddedHandler);
}
/// <summary>
/// Create a description of a column in a data model.
/// </summary>
/// <param name="dataModelSchema">The Schema of the entire data model.</param>
/// <param name="xmlSchemaObject">The schema of the column.</param>
public ColumnSchema(DataModelSchema dataModelSchema, XmlSchemaObject xmlSchemaObject) :
base(dataModelSchema, xmlSchemaObject)
{
// Initialize the object
this.dataModelSchema = dataModelSchema;
this.Name = string.Empty;
this.QualifiedName = XmlQualifiedName.Empty;
this.DataType = typeof(System.Object);
this.MinOccurs = 0.0M;
this.DefaultValue = null;
this.FixedValue = null;
// Extract the column properties from an Element.
if (xmlSchemaObject is XmlSchemaElement)
{
XmlSchemaElement xmlSchemaElement = xmlSchemaObject as XmlSchemaElement;
this.Name = xmlSchemaElement.Name;
this.QualifiedName = xmlSchemaElement.QualifiedName;
this.DataType = xmlSchemaElement.ElementSchemaType.Datatype.ValueType;
this.MinOccurs = xmlSchemaElement.MinOccurs;
this.DefaultValue = ConvertValue(xmlSchemaElement.DefaultValue);
this.FixedValue = ConvertValue(xmlSchemaElement.FixedValue);
}
// Extract the column properties from an Attribute.
if (xmlSchemaObject is XmlSchemaAttribute)
{
XmlSchemaAttribute xmlSchemaAttribute = xmlSchemaObject as XmlSchemaAttribute;
this.Name = xmlSchemaAttribute.Name;
this.QualifiedName = xmlSchemaAttribute.QualifiedName;
this.DataType = xmlSchemaAttribute.AttributeSchemaType.Datatype.ValueType;
this.DefaultValue = ConvertValue(xmlSchemaAttribute.DefaultValue);
this.FixedValue = ConvertValue(xmlSchemaAttribute.FixedValue);
}
// Determine the IsIdentityColumn property.
object autoIncrementAttribute = GetUnhandledAttribute(xmlSchemaObject, "AutoIncrement");
this.IsAutoIncrement = autoIncrementAttribute == null ? false : Convert.ToBoolean(autoIncrementAttribute);
// Determine the IsPersistent property.
object isColumnPersistentAttribute = GetUnhandledAttribute(xmlSchemaObject, "IsPersistent");
this.IsPersistent = isColumnPersistentAttribute == null ? true : Convert.ToBoolean(isColumnPersistentAttribute);
// Determine the AutoIncrementSeed property.
object autoIncrementSeedAttribute = GetUnhandledAttribute(xmlSchemaObject, "AutoIncrementSeed");
this.AutoIncrementSeed = autoIncrementSeedAttribute == null ? 0 : Convert.ToInt32(autoIncrementSeedAttribute);
// Determine the AutoIncrementStop property
object autoIncrementStepAttribute = GetUnhandledAttribute(xmlSchemaObject, "AutoIncrementStep");
this.AutoIncrementStep = autoIncrementStepAttribute == null ? 0 : Convert.ToInt32(autoIncrementStepAttribute);
// In an object oriented architecture it is important to know at which level of the hierarchy a column is initially
// declared. Just like the equivalent in the object oriented languages, this field indicates which table actually owns
// the data of a given column.
XmlSchemaObject parentObject = xmlSchemaObject.Parent;
while (!(parentObject is XmlSchemaComplexContentExtension) && !(parentObject is XmlSchemaComplexType))
{
parentObject = parentObject.Parent;
}
this.DeclaringType = FindDeclaringType(parentObject, xmlSchemaObject);
}
