/// <summary>
/// Visits the given <paramref name="versionNode"/>.
/// </summary>
/// <param name="versionNode"></param>
public override void Visit(IVersionNode versionNode)
{
IUpgradeNode upgradeNode = new UpgradeNode(versionNode);
foreach(IAstNode astNode in versionNode.ChildNodes)
{
astNode.Parent = upgradeNode;
upgradeNode.ChildNodes.Add(astNode);
} // foreach
versionNode.ChildNodes.Clear();
versionNode.ChildNodes.Add(upgradeNode);
}
/// <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>
/// Visits the given <paramref name="versionNode"/>.
/// </summary>
/// <param name="versionNode"></param>
public override void Visit(IVersionNode versionNode)
{
Visit(versionNode.ChildNodes);
}
/// <summary>
/// Visits the given <paramref name="versionNode"/>.
/// </summary>
/// <param name="versionNode"></param>
public override void Visit(IVersionNode versionNode)
{
textWriter.Write("version {0}", versionNode.Number);
WriteProperties(versionNode);
VisitBlock(versionNode);
}
private IAstNode GetNode(IVersionNode versionNode, MigrationMode migrationMode)
{
return migrationMode == MigrationMode.Upgrade ?
(IAstNode)GetFirst<IUpgradeNode>(versionNode.ChildNodes) :
(IAstNode)GetFirst<IDowngradeNode>(versionNode.ChildNodes);
}
