protected override string GetColumnDefinition(IAddColumnNode columnDefinition, bool enforceNullable)
{
bool? pk = columnDefinition.PrimaryKey;
columnDefinition.PrimaryKey = false;
string definition = base.GetColumnDefinition(columnDefinition, enforceNullable);
columnDefinition.PrimaryKey = pk;
return definition;
}
/// <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>
/// Visits the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
public override void Visit(IAddColumnNode addColumnNode)
{
Visit(addColumnNode.ChildNodes);
}
protected override string GetAddColumnDefinition(IAddColumnNode column)
{
var addColumn = base.GetAddColumnDefinition(column);
if(column.Identity ?? false)
addColumn += "identity ";
return addColumn;
}
public override void Visit(IAddColumnNode addColumnNode)
{
textWriter.Write("add column {0}", GetIdentifier(addColumnNode.Name));
WriteProperties(addColumnNode);
VisitBlock(addColumnNode);
}
private ColumnDefinition BindAddColumn(IAddColumnNode addColumnNode)
{
ColumnDefinition column = new ColumnDefinition(addColumnNode.Name);
BindColumnProperties(addColumnNode, column);
return column;
}
/// <summary>
/// Visits the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
public override void Visit(IAddColumnNode addColumnNode)
{
/*IColumnDef
IColumnBinding columnBinding = Environment.Resolve<IColumnBinding>(addColumnNode);
InferColumnType(addColumnNode, columnBinding);*/
}
/// <summary>
/// Visits the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
public override void Visit(IAddColumnNode addColumnNode)
{
base.Visit(addColumnNode);
//
// If no "type" is specified, we can get that from the type of the
// referenced column, if there is one
if(addColumnNode.Type == null)
{
IAddReferenceNode addReferenceNode = GetFirst<IAddReferenceNode>(addColumnNode.ChildNodes);
if(addReferenceNode != null)
{
ITableDefinition pkTable = Environment.Schema.GetTable(addReferenceNode.PkTable);
IColumnDefinition pkColumn = pkTable.GetColumn(addReferenceNode.PkColumns[0]);
IColumnDefinition fkColumn =
Environment.Schema.GetTable(((ITableNode)addColumnNode.Parent).Name).GetColumn(addColumnNode.Name);
addColumnNode.Type = fkColumn.Type = pkColumn.Type;
if(!addColumnNode.Nullable.HasValue || !fkColumn.Nullable.HasValue)
addColumnNode.Nullable = fkColumn.Nullable = false;
} // if
} // if
}
/// <summary>
/// Visits the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
public override void Visit(IAddColumnNode addColumnNode)
{
ResolveTypeAlias(addColumnNode);
}
protected virtual string GetAddColumnDefinition(IAddColumnNode column)
{
var builder = new StringBuilder();
builder.AppendFormat("\t{0} {1} {2} ",
EscapeIdentifier(column.Name),
MapToNativeType(column),
GetNullabilitySpecification(column));
var @default = column. Properties[MdlSyntax.Default];
if(@default != null)
builder.AppendFormat(" default '{0}'",
@default.Value is IStringAstNodePropertyValue ?
AstNodePropertyUtil.AsString(@default.Value) :
AstNodePropertyUtil.AsInteger(@default.Value).ToString());
return builder.ToString();
}
protected virtual string GetColumnDefinition(IAddColumnNode columnDefinition, bool enforceNullable)
{
StringBuilder columnDefinitionBuilder = new StringBuilder();
columnDefinitionBuilder.AppendFormat("{0} {1} {2}",
Platform.Dialect.EscapeIdentifier(columnDefinition.Name),
MapToNativeType(columnDefinition),
enforceNullable ?
"null" :
columnDefinition.Nullable.HasValue ?
columnDefinition.Nullable.Value ? "null" : "not null" :
"");
if(columnDefinition.Identity.HasValue && columnDefinition.Identity.Value)
columnDefinitionBuilder.Append(" identity");
if(columnDefinition.PrimaryKey.HasValue && columnDefinition.PrimaryKey.Value)
columnDefinitionBuilder.Append(" primary key");
else
columnDefinitionBuilder.Append("");
var @default = columnDefinition. Properties[MdlSyntax.Default];
if(@default != null)
columnDefinitionBuilder.AppendFormat(" default '{0}'",
@default.Value is IStringAstNodePropertyValue ?
AstNodePropertyUtil.AsString(@default.Value) :
AstNodePropertyUtil.AsInteger(@default.Value).ToString());
return columnDefinitionBuilder.ToString();
}
/// <summary>
/// Clones the given <paramref name="addColumnNode"/>.
/// </summary>
/// <param name="addColumnNode"></param>
/// <returns></returns>
public static IAddColumnNode Clone(IAddColumnNode addColumnNode)
{
IAddColumnNode node = new AddColumnNode(addColumnNode.Parent, addColumnNode.Name);
SemanticModelUtil.Copy(addColumnNode, node);
foreach(IAstNodeProperty property in addColumnNode.Properties)
node.Properties.AddProperty(new AstNodeProperty(property.Name, property.Value));
return node;
}
