/// <summary>
/// Visits the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
public override void Visit(IAddColumnNode addColumnNode)
{
//
// Create an "IAddReferenceNode" for "references" property
if(addColumnNode.Properties[MdlSyntax.References] != null)
{
IAstNodeProperty referencesProperty = addColumnNode.Properties[MdlSyntax.References];
string references = AstNodePropertyUtil.AsString(referencesProperty.Value);
IAddReferenceNode addReferenceNode = new AddReferenceNode(addColumnNode, "");
addReferenceNode.Location = referencesProperty.Location;
addReferenceNode.Properties.AddProperty(AstNodeProperty.String(MdlSyntax.PkTable, references));
//
// Propagate on-delete and on-update
var onDelete = addColumnNode.Properties["on-delete"];
if(onDelete != null)
addReferenceNode.Properties.AddProperty(onDelete);
var onUpdate = addColumnNode.Properties["on-update"];
if(onUpdate != null)
addReferenceNode.Properties.AddProperty(onUpdate);
addColumnNode.ChildNodes.Add(addReferenceNode);
} // if
//
// Create an 'IAddIndexNode" for "unique" property
if(addColumnNode.Properties[MdlSyntax.Unique] != null)
{
IAstNodeProperty uniqueProperty = addColumnNode.Properties[MdlSyntax.Unique];
IAddIndexNode addIndexNode = new AddIndexNode(addColumnNode, "");
addIndexNode.Location = uniqueProperty.Location;
addIndexNode.Properties.AddProperty(AstNodeProperty.String(MdlSyntax.Unique, "true"));
addColumnNode.ChildNodes.Add(addIndexNode);
} // if
//
// Create an 'IAddConstraintNode" for "default" property
if(addColumnNode.Properties[MdlSyntax.Default] != null)
{
IAstNodeProperty defaultProperty = addColumnNode.Properties[MdlSyntax.Default];
IAddConstraintNode addConstraintNode = new AddConstraintNode(addColumnNode, "");
addConstraintNode.Location = defaultProperty.Location;
addConstraintNode.Properties.AddProperty(new AstNodeProperty(MdlSyntax.Default, defaultProperty.Value));
addColumnNode.ChildNodes.Add(addConstraintNode);
} // if
}
/// <summary>
/// Builds up an AST with <paramref name="rootNode"/> as a root node
/// from the provided <paramref name="schema"/>.
/// </summary>
/// <param name="rootNode"></param>
/// <param name="schema"></param>
/// <returns></returns>
public static IAstNode BuildAstNodeFromSchema(IAstNode rootNode, Schema schema)
{
foreach(ITableDefinition table in schema.Tables)
{
IAddTableNode addTableNode = new AddTableNode(rootNode, table.Name);
rootNode.ChildNodes.Add(addTableNode);
foreach(IColumnDefinition column in table.Columns)
{
IAddColumnNode addColumnNode = new AddColumnNode(addTableNode, column.Name);
addTableNode.ChildNodes.Add(addColumnNode);
SemanticModelUtil.Copy(column, addColumnNode);
CopyProperties(column, addColumnNode);
} // foreach
foreach(IIndexDefinition index in table.Indexes)
{
IAddIndexNode addIndexNode = new AddIndexNode(rootNode, index.Name);
rootNode.ChildNodes.Add(addIndexNode);
SemanticModelUtil.Copy(index, addIndexNode);
CopyProperties(index, addIndexNode);
} // foreach
foreach(IReferenceDefinition reference in table.References)
{
IAddReferenceNode addReferenceNode = new AddReferenceNode(rootNode, reference.Name);
rootNode.ChildNodes.Add(addReferenceNode);
SemanticModelUtil.Copy(reference, addReferenceNode);
CopyProperties(reference, addReferenceNode);
} // foreach
} // foreach
return rootNode;
}
