/// <summary>
/// Parses ALTER TABLE view.
/// </summary>
private static void ParseView(Parser parser, PgView view, bool outputIgnoredStatements, string viewName, PgDatabase database)
{
while (!parser.ExpectOptional(";"))
{
if (parser.ExpectOptional("ALTER"))
{
parser.ExpectOptional("COLUMN");
var columnName = ParserUtils.GetObjectName(parser.ParseIdentifier());
if (parser.ExpectOptional("SET", "DEFAULT"))
{
var expression = parser.Expression();
view.AddColumnDefaultValue(columnName, expression);
}
else if (parser.ExpectOptional("DROP", "DEFAULT"))
{
view.RemoveColumnDefaultValue(columnName);
}
else
{
throw new TeamworkParserException("CannotParseStringUnsupportedCommand");
}
}
else if (parser.ExpectOptional("OWNER", "TO"))
{
// we do not parse this one so we just consume the identifier
if (outputIgnoredStatements)
{
database.AddIgnoredStatement("ALTER TABLE " + viewName + " OWNER TO " + parser.ParseIdentifier() + ';');
}
else
{
parser.ParseIdentifier();
}
}
else
{
throw new TeamworkParserException("CannotParseStringUnsupportedCommand");
}
}
}
/// <summary>
/// Parses ALTER VIEW statement.
/// </summary>
public static void Parse(PgDatabase database, string statement, bool outputIgnoredStatements)
{
var parser = new Parser(statement);
parser.Expect("ALTER", "VIEW");
var viewName = parser.ParseIdentifier();
var schemaName = ParserUtils.GetSchemaName(viewName, database);
if (database.SchemaIsIgnored(schemaName))
{
return;
}
PgSchema schema = database.GetSchema(schemaName);
if (schema == null)
{
throw new TeamworkParserException($"CannotFindSchema {schemaName} from {statement}");
}
var objectName = ParserUtils.GetObjectName(viewName);
PgView view = schema.GetView(objectName);
if (view == null)
{
throw new TeamworkParserException($"CannotFindView {viewName} from {statement}");
}
while (!parser.ExpectOptional(";"))
{
if (parser.ExpectOptional("ALTER"))
{
parser.ExpectOptional("COLUMN");
var columnName = ParserUtils.GetObjectName(parser.ParseIdentifier());
if (parser.ExpectOptional("SET", "DEFAULT"))
{
var expression = parser.Expression();
view.AddColumnDefaultValue(columnName, expression);
}
else if (parser.ExpectOptional("DROP", "DEFAULT"))
{
view.RemoveColumnDefaultValue(columnName);
}
else
{
throw new TeamworkParserException("CannotParseStringUnsupportedCommand");
}
}
else if (parser.ExpectOptional("OWNER", "TO"))
{
// we do not parse this one so we just consume the identifier
if (outputIgnoredStatements)
{
database.AddIgnoredStatement("ALTER TABLE " + viewName + " OWNER TO " + parser.ParseIdentifier() + ';');
}
else
{
parser.ParseIdentifier();
}
}
else
{
throw new TeamworkParserException("CannotParseStringUnsupportedCommand");
}
}
}