public void Visit(StringBuilder builder, AlterColumnCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
builder.AppendFormat("alter table {0} alter column {1} ",
_dialect.QuoteForTableName(command.TableName),
_dialect.QuoteForColumnName(command.ColumnName));
// type
if (command.DbType != DbType.Object)
{
builder.Append(GetTypeName(command.DbType, command.Length, command.Precision, command.Scale));
}
else
{
if (command.Length > 0 || command.Precision > 0 || command.Scale > 0)
{
throw new MonahrqCoreException("Error while executing data migration: you need to specify the field's type in order to change its properties");
}
}
// [default value]
if (command.Default != null)
{
builder.Append(" set default ").Append(ConvertToSqlValue(command.Default)).Append(Space);
}
SqlStatementList.Add(builder.ToString());
}
public void Visit(StringBuilder builder, DropIndexCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
builder.AppendFormat("drop index {0} ON {1}",
_dialect.QuoteForColumnName(command.IndexName),
_dialect.QuoteForTableName(command.TableName));
SqlStatementList.Add(builder.ToString());
}
public void Visit(StringBuilder builder, AddColumnCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
builder.AppendFormat("alter table {0} add ", _dialect.QuoteForTableName(command.TableName));
Visit(builder, (CreateColumnCommand)command);
SqlStatementList.Add(builder.ToString());
}
public override void Visit(DropForeignKeyCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
var builder = new StringBuilder();
builder.AppendFormat("alter table {0} drop constraint {1}", _dialect.QuoteForTableName(command.SrcTable), command.Name);
SqlStatementList.Add(builder.ToString());
RunPendingStatements();
}
public void Visit(StringBuilder builder, AddIndexCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
builder.AppendFormat("create index {1} on {0} ({2}) ",
_dialect.QuoteForTableName(command.TableName),
_dialect.QuoteForColumnName(command.IndexName),
String.Join(", ", command.ColumnNames));
SqlStatementList.Add(builder.ToString());
}
public override void Visit(DropTableCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
var builder = new StringBuilder();
builder.Append(_dialect.GetDropTableString(command.Name));
SqlStatementList.Add(builder.ToString());
RunPendingStatements();
}
public override void Visit(SqlStatementCommand command)
{
if (command.Providers.Count != 0 && !command.Providers.Contains(ConfigurationService.ConnectionSettings.ProviderName))
{
return;
}
if (ExecuteCustomInterpreter(command))
{
return;
}
SqlStatementList.Add(command.Sql);
RunPendingStatements();
}
public override void Visit(CreateTableCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
var builder = new StringBuilder();
builder.Append(_dialect.CreateMultisetTableString)
.Append(' ')
.Append(_dialect.QuoteForTableName(command.Name))
.Append(" (");
var appendComma = false;
foreach (var createColumn in command.TableCommands.OfType <CreateColumnCommand>())
{
if (appendComma)
{
builder.Append(", ");
}
appendComma = true;
Visit(builder, createColumn);
}
var primaryKeys = command.TableCommands.OfType <CreateColumnCommand>().Where(ccc => ccc.IsPrimaryKey).Select(ccc => ccc.ColumnName);
if (primaryKeys.Any())
{
if (appendComma)
{
builder.Append(", ");
}
builder.Append(_dialect.PrimaryKeyString)
.Append(" ( ")
.Append(String.Join(", ", primaryKeys.ToArray()))
.Append(" )");
}
builder.Append(" )");
SqlStatementList.Add(builder.ToString());
RunPendingStatements();
}
public override void Visit(CreateForeignKeyCommand command)
{
if (ExecuteCustomInterpreter(command))
{
return;
}
var builder = new StringBuilder();
builder.Append("alter table ")
.Append(_dialect.QuoteForTableName(command.SrcTable));
builder.Append(_dialect.GetAddForeignKeyConstraintString(command.Name,
command.SrcColumns,
_dialect.QuoteForTableName(command.DestTable),
command.DestColumns,
false));
SqlStatementList.Add(builder.ToString());
RunPendingStatements();
}
