Datum
bloptions(PG_FUNCTION_ARGS)
{
Datum reloptions = PG_GETARG_DATUM(0);
bool validate = PG_GETARG_BOOL(1);
relopt_value *options;
int numoptions;
BloomOptions *rdopts;
relopt_parse_elt tab[INDEX_MAX_KEYS+1];
int i;
char buf[16];
tab[0].optname = "length";
tab[0].opttype = RELOPT_TYPE_INT;
tab[0].offset = offsetof(BloomOptions, bloomLength);
for(i=0;i<INDEX_MAX_KEYS;i++)
{
snprintf(buf, sizeof(buf), "col%d", i+1);
tab[i+1].optname = pstrdup(buf);
tab[i+1].opttype = RELOPT_TYPE_INT;
tab[i+1].offset = offsetof(BloomOptions, bitSize[i]);
}
options = parseRelOptions(reloptions, validate, bloom_kind, &numoptions);
rdopts = allocateReloptStruct(sizeof(BloomOptions), options, numoptions);
fillRelOptions((void *) rdopts, sizeof(BloomOptions), options, numoptions,
validate, tab, INDEX_MAX_KEYS+1);
rdopts = makeDefaultBloomOptions(rdopts);
PG_RETURN_BYTEA_P(rdopts);
}
/*
* Fill in metapage for bloom index.
*/
void
BloomFillMetapage(Relation index, Page metaPage)
{
BloomOptions *opts;
BloomMetaPageData *metadata;
/*
* Choose the index's options. If reloptions have been assigned, use
* those, otherwise create default options.
*/
opts = (BloomOptions *) index->rd_options;
if (!opts)
opts = makeDefaultBloomOptions();
/*
* Initialize contents of meta page, including a copy of the options,
* which are now frozen for the life of the index.
*/
BloomInitPage(metaPage, BLOOM_META);
metadata = BloomPageGetMeta(metaPage);
memset(metadata, 0, sizeof(BloomMetaPageData));
metadata->magickNumber = BLOOM_MAGICK_NUMBER;
metadata->opts = *opts;
((PageHeader) metaPage)->pd_lower += sizeof(BloomMetaPageData);
/* If this fails, probably FreeBlockNumberArray size calc is wrong: */
Assert(((PageHeader) metaPage)->pd_lower <= ((PageHeader) metaPage)->pd_upper);
}
void
BloomInitMetabuffer(Buffer b, Relation index)
{
BloomMetaPageData *metadata;
Page page = BufferGetPage(b);
BloomInitPage(page, BLOOM_META, BufferGetPageSize(b));
metadata = BloomPageGetMeta(page);
memset(metadata, 0, sizeof(BloomMetaPageData));
metadata->magickNumber = BLOOM_MAGICK_NUMBER;
metadata->opts = *makeDefaultBloomOptions((BloomOptions*)index->rd_options);
}
