private void BuildAddTableNode(ITableDefinition table, IAstNode parent)
{
IAddTableNode addTableNode = new AddTableNode(parent, table.Name);
parent.ChildNodes.Add(addTableNode);
foreach(IColumnDefinition column in table.Columns)
{
BuildAddColumnNode(column, addTableNode);
} // foreach
}
public void Execute(IDbPlatform platform, IRefactorNode refactorNode, Environment environment)
{
string auditTableName = AstNodePropertyUtil.AsString(refactorNode.Properties["audit-table"].Value);
string tableName = AstNodePropertyUtil.AsString(refactorNode.Properties["table"].Value);
//
// We only need columns here
ITableDefinition tableDefinition = environment.Schema.GetTable(tableName);
ITableDefinition auditTable = new TableDefinition(auditTableName);
foreach(ColumnDefinition column in tableDefinition.Columns)
{
//
// Keep name and type only.
IColumnDefinition auditColumn = new ColumnDefinition(column.Name);
//
// Special handling for rowversion
if(column.Type == DbType.Time)
{
auditColumn.Length = 8;
auditColumn.Type = DbType.Binary;
} // if
else
{
auditColumn.Length = column.Length;
auditColumn.Type = column.Type;
} // else
auditColumn.Nullable = true;
auditTable.AddColumn(auditColumn);
} // foreach
environment.Schema.AddTable(auditTable);
//
// Now build an AST
IAddTableNode addAuditTableNode = new AddTableNode(refactorNode.Parent, auditTableName);
foreach(IColumnDefinition auditColumn in auditTable.Columns)
{
IAddColumnNode addAuditColumnNode = new AddColumnNode(addAuditTableNode, auditColumn.Name);
addAuditColumnNode.Type = auditColumn.Type;
addAuditColumnNode.Length = auditColumn.Length;
addAuditColumnNode.Nullable = auditColumn.Nullable;
addAuditTableNode.ChildNodes.Add(addAuditColumnNode);
} // foreach
addAuditTableNode.Parent.ChildNodes.Add(addAuditTableNode);
}
/// <summary>
/// Visits the given <paramref name="versionNode"/>.
/// </summary>
/// <param name="versionNode"></param>
public override void Visit(IVersionNode versionNode)
{
//
// Add a IAddTableNode which will create "SchemaInfo" tabled
// to the first IVersionNode we encounter
if(builtSchemaInfo)
return;
IAddTableNode addSchemaInfoTableNode = new AddTableNode(versionNode, "SchemaInfo");
IAddColumnNode addVersionColumnNode = new AddColumnNode(addSchemaInfoTableNode, "Version");
addVersionColumnNode.Properties.AddProperty(AstNodeProperty.Symbol(MdlSyntax.Type, DbType.Int64.ToString()));
addVersionColumnNode.Properties.AddProperty(AstNodeProperty.Symbol(MdlSyntax.Unique, "true"));
addVersionColumnNode.Properties.AddProperty(AstNodeProperty.Symbol(MdlSyntax.Nullable, "false"));
addSchemaInfoTableNode.ChildNodes.Add(addVersionColumnNode);
builtSchemaInfo = true;
versionNode.ChildNodes.Insert(0, addSchemaInfoTableNode);
}
/// <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;
}
