/// <summary>
/// </summary>
public override string UpdateTrigger(string layer, string triggerName, Type rootType,
Dictionary <string, string> linkParams, string fromTableName, MapField field, string setCommand, string owner = "", string functionSchema = "")
{
string triggerCommand = $"CREATE TRIGGER {triggerName}{Environment.NewLine}";
triggerCommand += $"ON {fromTableName} AFTER INSERT, UPDATE AS BEGIN{Environment.NewLine}";
triggerCommand += field.Chain.UpdatedFields(fromTableName).Any()
? "IF " +
string.Join(" OR ",
field.Chain.UpdatedFields(fromTableName)
.Select(fld => $"UPDATE({fld})")
.ToArray()) + " BEGIN" + Environment.NewLine
: "";
triggerCommand += "UPDATE layer" + Environment.NewLine;
triggerCommand += setCommand;
triggerCommand +=
$"FROM {layer} layer INNER JOIN {(field.Chain.TableName == fromTableName ? "inserted" : field.Chain.FullTableName)} {field.Chain.Alias} ON ";
triggerCommand += string.Join(
" AND ",
linkParams.Select(
flink =>
$"layer.{flink.Key}={field.Chain.Alias}.{flink.Value.Replace("@", "")}").
ToArray()) + Environment.NewLine;
triggerCommand += FromStatement(fromTableName, field.Chain) + Environment.NewLine;
triggerCommand += "END" + Environment.NewLine;
triggerCommand += "END";
return(triggerCommand);
}
/// <summary>
/// </summary>
public abstract string UpdateTrigger(string layer, string triggerName, Type rootType,
Dictionary <string, string> linkParams, string fromTableName, MapField field, string setCommand, string owner = "", string functionSchema = "");
/// <summary>
/// </summary>
public override string UpdateTrigger(string layer, string triggerName, Type rootType,
Dictionary <string, string> linkParams, string fromTableName, MapField field, string setCommand, string owner, string functionSchema)
{
string triggerCommand = $"CREATE FUNCTION {functionSchema}{triggerName}_f() RETURNS TRIGGER AS $${Environment.NewLine}";
triggerCommand += $"BEGIN{Environment.NewLine}";
triggerCommand += $"UPDATE {layer} layer{Environment.NewLine}";
triggerCommand += setCommand;
triggerCommand += $"FROM {field.Chain.FullTableName} {field.Chain.Alias} ";
triggerCommand += $"{FromStatement(fromTableName, field.Chain)}{Environment.NewLine}";
triggerCommand += "WHERE ";
var tableAlias = field.Chain.TableName == fromTableName ? "NEW" : field.Chain.Alias;
triggerCommand += string.Join(" AND ",
linkParams.Select(flink => $"layer.{flink.Key} = {flink.Value.Replace("@", tableAlias + ".")}").ToArray()) + Environment.NewLine;
var fromTableChain = field.Chain.FindChain(fromTableName);
triggerCommand += $" AND {fromTableChain.Alias}.{fromTableChain.PrimaryKey} = NEW.{fromTableChain.PrimaryKey};{Environment.NewLine}";
triggerCommand += $"RETURN NULL;{Environment.NewLine}";
triggerCommand += $"END{Environment.NewLine}";
triggerCommand += $"$$ LANGUAGE plpgsql;{Environment.NewLine}{Environment.NewLine}";
triggerCommand += $"CREATE TRIGGER {triggerName}{Environment.NewLine}";
triggerCommand += $"AFTER INSERT OR UPDATE";
triggerCommand += field.Chain.UpdatedFields(fromTableName).Any() ? $" OF {string.Join(", ", field.Chain.UpdatedFields(fromTableName).Select(fld => fld).ToArray())}" : "";
triggerCommand += $" ON {fromTableName}{Environment.NewLine}";
triggerCommand += $"FOR EACH ROW{Environment.NewLine}";
triggerCommand += $"EXECUTE PROCEDURE {functionSchema}{triggerName}_f();{Environment.NewLine}";
if (!string.IsNullOrEmpty(owner))
{
triggerCommand += $"ALTER FUNCTION {functionSchema}{triggerName}_f() OWNER TO {owner};";
}
return(triggerCommand);
}
/// <summary> /// </summary> public abstract string Update(MapField field, string setCommand, string layer, Dictionary <string, string> linkParams);
