Extend the json-path mechanism with array indexes of the form "#" or "#-n" for
some positive number "n", to reference the end of an array. FossilOrigin-Name: 35ed68a651f4cf8740597433b0f1c3b345841868022e0904e9f342840ba0e502
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drh
parent
22de8357df
commit
5281864f0c
@ -1176,18 +1176,49 @@ static JsonNode *jsonLookupStep(
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}
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return pNode;
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}
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}else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){
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if( pRoot->eType!=JSON_ARRAY ) return 0;
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}else if( zPath[0]=='[' ){
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i = 0;
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j = 1;
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while( safe_isdigit(zPath[j]) ){
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i = i*10 + zPath[j] - '0';
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j++;
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}
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if( zPath[j]!=']' ){
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*pzErr = zPath;
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return 0;
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if( j<2 || zPath[j]!=']' ){
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if( zPath[1]=='#' ){
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JsonNode *pBase = pRoot;
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int iBase = iRoot;
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if( pRoot->eType!=JSON_ARRAY ) return 0;
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for(;;){
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while( j<=pBase->n ){
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if( (pBase[j].jnFlags & JNODE_REMOVE)==0 ) i++;
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j += jsonNodeSize(&pBase[j]);
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}
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if( (pBase->jnFlags & JNODE_APPEND)==0 ) break;
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iBase += pBase->u.iAppend;
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pBase = &pParse->aNode[iBase];
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j = 1;
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}
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j = 2;
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if( zPath[2]=='-' && safe_isdigit(zPath[3]) ){
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unsigned int x = 0;
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j = 3;
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do{
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x = x*10 + zPath[j] - '0';
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j++;
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}while( safe_isdigit(zPath[j]) );
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if( x>i ) return 0;
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i -= x;
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}
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if( zPath[j]!=']' ){
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*pzErr = zPath;
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return 0;
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}
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}else{
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*pzErr = zPath;
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return 0;
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}
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}
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if( pRoot->eType!=JSON_ARRAY ) return 0;
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zPath += j + 1;
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j = 1;
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for(;;){
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16
manifest
16
manifest
@ -1,5 +1,5 @@
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C Fix\sa\sharmless\scompiler\swarning.
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D 2019-11-22T11:49:40.000
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C Extend\sthe\sjson-path\smechanism\swith\sarray\sindexes\sof\sthe\sform\s"#"\sor\s"#-n"\sfor\nsome\spositive\snumber\s"n",\sto\sreference\sthe\send\sof\san\sarray.
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D 2019-11-22T17:37:56.495
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F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
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@ -295,7 +295,7 @@ F ext/misc/fileio.c 288e7230e0fe464d71b0694e2d8bdd3a353118ac2e31da3964b95f460f09
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F ext/misc/fossildelta.c 7708651072eb5620ab21bbfb518d184f27b2c29c0131b09b9a2d8852a8016430
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F ext/misc/fuzzer.c c4e27daf41433a64cad5265cd27dbcb891147e9994d0422200ce81ce9a54b625
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F ext/misc/ieee754.c f190d0cc5182529acb15babd177781be1ac1718c
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F ext/misc/json1.c b4a8074e5a126379dd3af81b8595118c9c472b06f3fd508bd2ea579a75e3a1b1
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F ext/misc/json1.c 760107d0b97ab422952591b0d7519327dcb482954a7706ee387a54c135f8aabf
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F ext/misc/memstat.c 3017a0832c645c0f8c773435620d663855f04690172316bd127270d1a7523d4d
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F ext/misc/memtrace.c 7c0d115d2ef716ad0ba632c91e05bd119cb16c1aedf3bec9f06196ead2d5537b
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F ext/misc/memvfs.c ab36f49e02ebcdf85a1e08dc4d8599ea8f343e073ac9e0bca18a98b7e1ec9567
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@ -1099,6 +1099,7 @@ F test/json101.test bb71538005f2d9e18620bdd3b76839a93ca0be61903eb8d751a64e78cf99
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F test/json102.test eeb54efa221e50b74a2d6fb9259963b48d7414dca3ce2fdfdeed45cb28487bc1
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F test/json103.test aff6b7a4c17d5a20b487a7bc1a274bfdc63b829413bdfb83bedac42ec7f67e3b
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F test/json104.test 317f4ec4b2d87afbba4d2460cf5be297aea76f2285eb618d276dbcd40a50950f
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F test/json105.test 45f7d6a9a54c85f8a9589b68d3e7a1f42d02f2359911a8cdbad1f9988f571173
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F test/keyword1.test 37ef6bba5d2ed5b07ecdd6810571de2956599dff
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F test/kvtest.c 94da54bb66aae7a54e47cf7e4ea4acecc0f217560f79ad3abfcc0361d6d557ba
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F test/lastinsert.test 42e948fd6442f07d60acbd15d33fb86473e0ef63
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@ -1850,7 +1851,10 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
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F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
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P e6314e386c6877c669bd32788d3886253b0a187bee2c3889f4eaba219f5e52c7
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R f485ea78793a9a63600d3b4152792ab1
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P 34343c4b0657767f2676a2a9feb670cf000824e3eadfb1a6d87b57404191d8f9
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R c6da582f868a5f82d03ec9634a7b8150
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T *branch * json-path-enhancement
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T *sym-json-path-enhancement *
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T -sym-trunk *
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U drh
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Z a041bc0b0948e0c1d06b6422ec2beb5c
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Z 4a48cd4a80fd585147d8b1e47ef59f7e
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@ -1 +1 @@
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34343c4b0657767f2676a2a9feb670cf000824e3eadfb1a6d87b57404191d8f9
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35ed68a651f4cf8740597433b0f1c3b345841868022e0904e9f342840ba0e502
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118
test/json105.test
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118
test/json105.test
Normal file
@ -0,0 +1,118 @@
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# 2019-11-22
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements tests for "[#]" extension to json-path
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix json104
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ifcapable !json1 {
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finish_test
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return
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}
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# This is the example from pages 2 and 3 of RFC-7396
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db eval {
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CREATE TABLE t1(j);
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INSERT INTO t1(j) VALUES('{"a":1,"b":[1,[2,3],4],"c":99}');
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}
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proc json_extract_test {testnum path result} {
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do_execsql_test json105-1.$testnum "SELECT quote(json_extract(j,$path)) FROM t1" $result
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}
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json_extract_test 10 {'$.b[#]'} NULL
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json_extract_test 20 {'$.b[#-1]'} 4
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json_extract_test 30 {'$.b[#-2]'} {'[2,3]'}
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json_extract_test 31 {'$.b[#-02]'} {'[2,3]'}
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json_extract_test 40 {'$.b[#-3]'} 1
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json_extract_test 50 {'$.b[#-4]'} NULL
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json_extract_test 60 {'$.b[#-2][#-1]'} 3
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json_extract_test 70 {'$.b[0]','$.b[#-1]'} {'[1,4]'}
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json_extract_test 100 {'$.a[#-1]'} NULL
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json_extract_test 110 {'$.b[#-000001]'} 4
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proc json_remove_test {testnum path result} {
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do_execsql_test json105-2.$testnum "SELECT quote(json_remove(j,$path)) FROM t1" $result
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}
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json_remove_test 10 {'$.b[#]'} {'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_remove_test 20 {'$.b[#-0]'} {'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_remove_test 30 {'$.b[#-1]'} {'{"a":1,"b":[1,[2,3]],"c":99}'}
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json_remove_test 40 {'$.b[#-2]'} {'{"a":1,"b":[1,4],"c":99}'}
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json_remove_test 50 {'$.b[#-3]'} {'{"a":1,"b":[[2,3],4],"c":99}'}
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json_remove_test 60 {'$.b[#-4]'} {'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_remove_test 70 {'$.b[#-2][#-1]'} {'{"a":1,"b":[1,[2],4],"c":99}'}
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json_remove_test 100 {'$.b[0]','$.b[#-1]'} {'{"a":1,"b":[[2,3]],"c":99}'}
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json_remove_test 110 {'$.b[#-1]','$.b[0]'} {'{"a":1,"b":[[2,3]],"c":99}'}
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json_remove_test 120 {'$.b[#-1]','$.b[#-2]'} {'{"a":1,"b":[[2,3]],"c":99}'}
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json_remove_test 130 {'$.b[#-1]','$.b[#-1]'} {'{"a":1,"b":[1],"c":99}'}
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json_remove_test 140 {'$.b[#-2]','$.b[#-1]'} {'{"a":1,"b":[1],"c":99}'}
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proc json_insert_test {testnum x result} {
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do_execsql_test json105-3.$testnum "SELECT quote(json_insert(j,$x)) FROM t1" $result
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}
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json_insert_test 10 {'$.b[#]','AAA'} {'{"a":1,"b":[1,[2,3],4,"AAA"],"c":99}'}
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json_insert_test 20 {'$.b[1][#]','AAA'} {'{"a":1,"b":[1,[2,3,"AAA"],4],"c":99}'}
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json_insert_test 30 {'$.b[1][#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3,"AAA"],4,"BBB"],"c":99}'}
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json_insert_test 40 {'$.b[#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3],4,"AAA","BBB"],"c":99}'}
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proc json_set_test {testnum x result} {
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do_execsql_test json105-4.$testnum "SELECT quote(json_set(j,$x)) FROM t1" $result
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}
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json_set_test 10 {'$.b[#]','AAA'} {'{"a":1,"b":[1,[2,3],4,"AAA"],"c":99}'}
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json_set_test 20 {'$.b[1][#]','AAA'} {'{"a":1,"b":[1,[2,3,"AAA"],4],"c":99}'}
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json_set_test 30 {'$.b[1][#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3,"AAA"],4,"BBB"],"c":99}'}
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json_set_test 40 {'$.b[#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3],4,"AAA","BBB"],"c":99}'}
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json_set_test 50 {'$.b[#-1]','AAA'} {'{"a":1,"b":[1,[2,3],"AAA"],"c":99}'}
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json_set_test 60 {'$.b[1][#-1]','AAA'} {'{"a":1,"b":[1,[2,"AAA"],4],"c":99}'}
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json_set_test 70 {'$.b[1][#-1]','AAA','$.b[#-1]','BBB'} \
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{'{"a":1,"b":[1,[2,"AAA"],"BBB"],"c":99}'}
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json_set_test 80 {'$.b[#-1]','AAA','$.b[#-1]','BBB'} \
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{'{"a":1,"b":[1,[2,3],"BBB"],"c":99}'}
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proc json_replace_test {testnum x result} {
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do_execsql_test json105-5.$testnum "SELECT quote(json_replace(j,$x)) FROM t1" $result
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}
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json_replace_test 10 {'$.b[#]','AAA'} {'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_replace_test 20 {'$.b[1][#]','AAA'} {'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_replace_test 30 {'$.b[1][#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_replace_test 40 {'$.b[#]','AAA','$.b[#]','BBB'} \
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{'{"a":1,"b":[1,[2,3],4],"c":99}'}
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json_replace_test 50 {'$.b[#-1]','AAA'} {'{"a":1,"b":[1,[2,3],"AAA"],"c":99}'}
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json_replace_test 60 {'$.b[1][#-1]','AAA'} {'{"a":1,"b":[1,[2,"AAA"],4],"c":99}'}
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json_replace_test 70 {'$.b[1][#-1]','AAA','$.b[#-1]','BBB'} \
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{'{"a":1,"b":[1,[2,"AAA"],"BBB"],"c":99}'}
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json_replace_test 80 {'$.b[#-1]','AAA','$.b[#-1]','BBB'} \
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{'{"a":1,"b":[1,[2,3],"BBB"],"c":99}'}
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do_catchsql_test json105-6.10 {
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SELECT json_extract(j, '$.b[#-]') FROM t1;
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} {1 {JSON path error near '[#-]'}}
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do_catchsql_test json105-6.20 {
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SELECT json_extract(j, '$.b[#9]') FROM t1;
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} {1 {JSON path error near '[#9]'}}
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do_catchsql_test json105-6.30 {
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SELECT json_extract(j, '$.b[#+2]') FROM t1;
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} {1 {JSON path error near '[#+2]'}}
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do_catchsql_test json105-6.40 {
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SELECT json_extract(j, '$.b[#-1') FROM t1;
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} {1 {JSON path error near '[#-1'}}
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do_catchsql_test json105-6.50 {
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SELECT json_extract(j, '$.b[#-1x]') FROM t1;
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} {1 {JSON path error near '[#-1x]'}}
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finish_test
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