public static void CreateFunctions(TextWriter writer, PgDiffArguments arguments,
PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
// Add new functions and replace modified functions
foreach (var newFunction in newSchema.GetFunctions())
{
var oldFunction = oldSchema?.GetFunction(newFunction.GetSignature());
if (oldFunction == null || !newFunction.Equals(oldFunction, arguments.IgnoreFunctionWhitespace))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine(newFunction.GetCreationSql());
}
}
}
public static void DropFunctions(TextWriter writer, PgDiffArguments arguments,
PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
// Drop functions that exist no more
foreach (var oldFunction in oldSchema.GetFunctions())
{
if (!newSchema.ContainsFunction(oldFunction.GetSignature()))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine(oldFunction.GetDropSql());
}
}
}
public static void AlterComments(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldFun in oldSchema.GetFunctions())
{
var newFunction = newSchema.GetFunction(oldFun.GetSignature());
if (newFunction == null)
{
continue;
}
if (oldFun.Comment == null &&
newFunction.Comment != null ||
oldFun.Comment != null &&
newFunction.Comment != null &&
!oldFun.Comment.Equals(
newFunction.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON FUNCTION ");
writer.Write(PgDiffUtils.GetQuotedName(newFunction.Name));
writer.Write('(');
var addComma = false;
foreach (var argument in newFunction.GetArguments())
{
if (addComma)
{
writer.Write(", ");
}
else
{
addComma = true;
}
writer.Write(argument.GetDeclaration(false));
}
writer.Write(") IS ");
writer.Write(newFunction.Comment);
writer.WriteLine(';');
}
else if (oldFun.Comment != null && newFunction.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON FUNCTION ");
writer.Write(PgDiffUtils.GetQuotedName(newFunction.Name));
writer.Write('(');
var addComma = false;
foreach (var argument in newFunction.GetArguments())
{
if (addComma)
{
writer.Write(", ");
}
else
{
addComma = true;
}
writer.Write(argument.GetDeclaration(false));
}
writer.WriteLine(") IS NULL;");
}
}
}