16 Commits (3e1683d37e1d751eb2df9a5cb0507bebc6cf7d05)

Author	SHA1	Message	Date
Noah Misch	2fd26b23b6	Assume deconstruct_array() outputs are untoasted. ... In functions that issue a deconstruct_array() call, consistently use plain VARSIZE()/VARDATA() on the array elements. Prior practice was divided between those and VARSIZE_ANY_EXHDR()/VARDATA_ANY().	9 years ago
Peter Eisentraut	f21a563d25	Move some things from builtins.h to new header files ... This avoids that builtins.h has to include additional header files.	9 years ago
Bruce Momjian	1d25779284	Update copyright via script for 2017	9 years ago
Bruce Momjian	ee94300446	Update copyright for 2016 ... Backpatch certain files through 9.1	10 years ago
Tom Lane	b23af45875	Fix erroneous hash calculations in gin_extract_jsonb_path(). ... The jsonb_path_ops code calculated hash values inconsistently in some cases involving nested arrays and objects. This would result in queries possibly not finding entries that they should find, when using a jsonb_path_ops GIN index for the search. The problem cases involve JSONB values that contain both scalars and sub-objects at the same nesting level, for example an array containing both scalars and sub-arrays. To fix, reset the current stack->hash after processing each value or sub-object, not before; and don't try to be cute about the outermost level's initial hash. Correcting this means that existing jsonb_path_ops indexes may now be inconsistent with the new hash calculation code. The symptom is the same --- searches not finding entries they should find --- but the specific rows affected are likely to be different. Users will need to REINDEX jsonb_path_ops indexes to make sure that all searches work as expected. Per bug #13756 from Daniel Cheng. Back-patch to 9.4 where the faulty logic was introduced.	10 years ago
Noah Misch	7732d49ca2	Use JsonbIteratorToken consistently in automatic variable declarations. ... Many functions stored JsonbIteratorToken values in variables of other integer types. Also, standardize order relative to other declarations. Expect compilers to generate the same code before and after this change.	10 years ago
Alvaro Herrera	26df7066cc	Move strategy numbers to include/access/stratnum.h ... For upcoming BRIN opclasses, it's convenient to have strategy numbers defined in a single place. Since there's nothing appropriate, create it. The StrategyNumber typedef now lives there, as well as existing strategy numbers for B-trees (from skey.h) and R-tree-and-friends (from gist.h). skey.h is forced to include stratnum.h because of the StrategyNumber typedef, but gist.h is not; extensions that currently rely on gist.h for rtree strategy numbers might need to add a new A few .c files can stop including skey.h and/or gist.h, which is a nice side benefit. Per discussion: https://www.postgresql.org/message-id/20150514232132.GZ2523@alvh.no-ip.org Authored by Emre Hasegeli and Álvaro. (It's not clear to me why bootscanner.l has any #include lines at all.)	11 years ago
Bruce Momjian	4baaf863ec	Update copyright for 2015 ... Backpatch certain files through 9.0	11 years ago
Tom Lane	12e611d43e	Rename jsonb_hash_ops to jsonb_path_ops. ... There's no longer much pressure to switch the default GIN opclass for jsonb, but there was still some unhappiness with the name "jsonb_hash_ops", since hashing is no longer a distinguishing property of that opclass, and anyway it seems like a relatively minor detail. At the suggestion of Heikki Linnakangas, we'll use "jsonb_path_ops" instead; that captures the important characteristic that each index entry depends on the entire path from the document root to the indexed value. Also add a user-facing explanation of the implementation properties of these two opclasses.	12 years ago
Tom Lane	46dddf7673	Improve key representation for GIN jsonb_ops, and fix existence-search bug. ... Change the key representation so that values that would exceed 127 bytes are hashed into short strings, and so that the original JSON datatype of each value is recorded in the index. The hashing rule eliminates the major objection to having this opclass be the default for jsonb, namely that it could fail for plausible input data (due to GIN's restrictions on maximum key length). Preserving datatype information doesn't really buy us much right now, but it requires no extra space compared to the previous way, and it might be useful later. Also, change the consistency-checking functions to request recheck for exists (jsonb ? text) and related operators. The original analysis that this is an exactly checkable query was incorrect, since the index does not preserve information about whether a key appears at top level in the indexed JSON object. Add a test case demonstrating the problem. Make some other, mostly cosmetic improvements to the code in jsonb_gin.c as well. catversion bump due to on-disk data format change in jsonb_ops indexes.	12 years ago
Heikki Linnakangas	364ddc3e5c	Clean up jsonb code. ... The main target of this cleanup is the convertJsonb() function, but I also touched a lot of other things that I spotted into in the process. The new convertToJsonb() function uses an output buffer that's resized on demand, so the code to estimate of the size of JsonbValue is removed. The on-disk format was not changed, even though I refactored the structs used to handle it. The term "superheader" is replaced with "container". The jsonb_exists_any and jsonb_exists_all functions no longer sort the input array. That was a premature optimization, the idea being that if there are duplicates in the input array, you only need to check them once. Also, sorting the array saves some effort in the binary search used to find a key within an object. But there were drawbacks too: the sorting and deduplicating obviously isn't free, and in the typical case there are no duplicates to remove, and the gain in the binary search was minimal. Remove all that, which makes the code simpler too. This includes a bug-fix; the total length of the elements in a jsonb array or object mustn't exceed 2^28. That is now checked.	12 years ago
Tom Lane	1891b415f0	Fix some more confusion between uint32 and Datum.	12 years ago
Bruce Momjian	0a78320057	pgindent run for 9.4 ... This includes removing tabs after periods in C comments, which was applied to back branches, so this change should not effect backpatching.	12 years ago
Tom Lane	f33a71a786	De-anonymize the union in JsonbValue. ... Needed for strict C89 compliance.	12 years ago
Heikki Linnakangas	0cfa34c25a	Rename GinLogicValue to GinTernaryValue. ... It's more descriptive. Also, get rid of the enum, and use #defines instead, per Greg Stark's suggestion.	12 years ago
Andrew Dunstan	d9134d0a35	Introduce jsonb, a structured format for storing json. ... The new format accepts exactly the same data as the json type. However, it is stored in a format that does not require reparsing the orgiginal text in order to process it, making it much more suitable for indexing and other operations. Insignificant whitespace is discarded, and the order of object keys is not preserved. Neither are duplicate object keys kept - the later value for a given key is the only one stored. The new type has all the functions and operators that the json type has, with the exception of the json generation functions (to_json, json_agg etc.) and with identical semantics. In addition, there are operator classes for hash and btree indexing, and two classes for GIN indexing, that have no equivalent in the json type. This feature grew out of previous work by Oleg Bartunov and Teodor Sigaev, which was intended to provide similar facilities to a nested hstore type, but which in the end proved to have some significant compatibility issues. Authors: Oleg Bartunov, Teodor Sigaev, Peter Geoghegan and Andrew Dunstan. Review: Andres Freund	12 years ago