Function WriteQuals

pg_documentdb/src/explain/documentdb_explain.c:529–582

static void
WriteQuals(pgbson_writer *writer, List *quals)
{
	CHECK_FOR_INTERRUPTS();
	check_stack_depth();

	ListCell *qualCell;
	foreach(qualCell, quals)
	{
		Expr *qual = (Expr *) lfirst(qualCell);

		if (IsA(qual, BoolExpr))
		{
			BoolExpr *boolExpr = (BoolExpr *) qual;
			switch (boolExpr->boolop)
			{
				case AND_EXPR:
				{
					pgbson_array_writer andWriter;
					PgbsonWriterStartArray(writer, "$and", -1, &andWriter);
					WriteBoolExpr(&andWriter, boolExpr);
					PgbsonWriterEndArray(writer, &andWriter);
					break;
				}

				case OR_EXPR:
				{
					pgbson_array_writer orWriter;
					PgbsonWriterStartArray(writer, "$or", -1, &orWriter);
					WriteBoolExpr(&orWriter, boolExpr);
					PgbsonWriterEndArray(writer, &orWriter);
					break;
				}

				case NOT_EXPR:
				{
					pgbson_writer notWriter;
					PgbsonWriterStartDocument(writer, "$not", -1, &notWriter);
					WriterSingleQual(&notWriter, linitial(boolExpr->args));
					PgbsonWriterEndDocument(writer, &notWriter);
					break;
				}

				default:
					ereport(ERROR, (errmsg("Unsupported boolean operator in qual: %d",
										   boolExpr->boolop)));
			}
		}
		else
		{
			WriterSingleQual(writer, qual);
		}
	}
}


static void