protected override Expression VisitForeignKeyConstraint(SqlForeignKeyConstraintExpression foreignKeyConstraintExpression)
{
var action = new SqlConstraintActionExpression(SqlConstraintActionType.Add, foreignKeyConstraintExpression);
var amendmentEpression = new SqlAlterTableExpression(this.currentTable.Table, action);
this.amendments.Add(amendmentEpression);
return(null);
}
protected override Expression VisitAlterTable(SqlAlterTableExpression alterTableExpression)
{
this.Write("ALTER TABLE ");
this.Visit(alterTableExpression.Table);
this.Write(" ");
this.VisitExpressionList(alterTableExpression.Actions);
this.WriteLine(";");
return(alterTableExpression);
}
protected virtual Expression VisitAlterTable(SqlAlterTableExpression alterTableExpression)
{
var newTable = this.Visit(alterTableExpression.Table);
var newList = this.VisitExpressionList(alterTableExpression.Actions);
if (newTable != alterTableExpression.Table || newList != alterTableExpression.Actions)
{
return(new SqlAlterTableExpression(newTable, newList));
}
return(alterTableExpression);
}
protected override Expression VisitConstraint(SqlConstraintExpression expression)
{
if (expression.ReferencesExpression == null)
{
return(expression);
}
var action = new SqlConstraintActionExpression(SqlConstraintActionType.Add, expression);
var amendmentEpression = new SqlAlterTableExpression(this.currentTable.Table, action);
this.amendments.Add(amendmentEpression);
return(null);
}
