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Overview
| Comment: | Enhance the json_insert(), json_replace(), and json_set() functions with the ability to add JSON instead of text if the argument is text and if the PATH begins with '$$' instead of just '$'. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
44f103d8862abc2d5613bac04dc2ea8e |
| User & Date: | drh 2015-08-28 03:33:50 |
Context
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2015-08-28
| ||
| 03:48 | Add the json_check() function, which returns its argument if the argument is well-formed JSON or which throws an error otherwise. check-in: 64abb65d user: drh tags: trunk | |
| 03:33 | Enhance the json_insert(), json_replace(), and json_set() functions with the ability to add JSON instead of text if the argument is text and if the PATH begins with '$$' instead of just '$'. check-in: 44f103d8 user: drh tags: trunk | |
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2015-08-27
| ||
| 23:18 | Fix the OR-optimization so that it always ignores subplans that do not use an index. check-in: 66f92a16 user: drh tags: trunk | |
Changes
Changes to ext/misc/json1.c.
76 77 78 79 80 81 82 83 84 85 86 87 88 89 ... 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 ... 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 ... 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 ... 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 ... 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 .... 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 .... 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 .... 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 |
/* Bit values for the JsonNode.jnFlag field
*/
#define JNODE_RAW 0x01 /* Content is raw, not JSON encoded */
#define JNODE_ESCAPE 0x02 /* Content is text with \ escapes */
#define JNODE_REMOVE 0x04 /* Do not output */
#define JNODE_REPLACE 0x08 /* Replace with JsonNode.iVal */
#define JNODE_APPEND 0x10 /* More ARRAY/OBJECT entries at u.iAppend */
/* A single node of parsed JSON
*/
struct JsonNode {
u8 eType; /* One of the JSON_ type values */
u8 jnFlags; /* JNODE flags */
................................................................................
/*
** Append a function parameter value to the JSON string under
** construction.
*/
static void jsonAppendValue(
JsonString *p, /* Append to this JSON string */
sqlite3_value *pValue /* Value to append */
){
switch( sqlite3_value_type(pValue) ){
case SQLITE_NULL: {
jsonAppendRaw(p, "null", 4);
break;
}
case SQLITE_INTEGER:
................................................................................
u32 n = (u32)sqlite3_value_bytes(pValue);
jsonAppendRaw(p, z, n);
break;
}
case SQLITE_TEXT: {
const char *z = (const char*)sqlite3_value_text(pValue);
u32 n = (u32)sqlite3_value_bytes(pValue);
jsonAppendString(p, z, n);
break;
}
default: {
if( p->bErr==0 ){
sqlite3_result_error(p->pCtx, "JSON cannot hold BLOB values", -1);
p->bErr = 1;
jsonReset(p);
................................................................................
u32 j = 1;
jsonAppendChar(pOut, '[');
for(;;){
while( j<=pNode->n ){
if( pNode[j].jnFlags & (JNODE_REMOVE|JNODE_REPLACE) ){
if( pNode[j].jnFlags & JNODE_REPLACE ){
jsonAppendSeparator(pOut);
jsonAppendValue(pOut, aReplace[pNode[j].iVal]);
}
}else{
jsonAppendSeparator(pOut);
jsonRenderNode(&pNode[j], pOut, aReplace);
}
j += jsonNodeSize(&pNode[j]);
}
................................................................................
for(;;){
while( j<=pNode->n ){
if( (pNode[j+1].jnFlags & JNODE_REMOVE)==0 ){
jsonAppendSeparator(pOut);
jsonRenderNode(&pNode[j], pOut, aReplace);
jsonAppendChar(pOut, ':');
if( pNode[j+1].jnFlags & JNODE_REPLACE ){
jsonAppendValue(pOut, aReplace[pNode[j+1].iVal]);
}else{
jsonRenderNode(&pNode[j+1], pOut, aReplace);
}
}
j += 1 + jsonNodeSize(&pNode[j+1]);
}
if( (pNode->jnFlags & JNODE_APPEND)==0 ) break;
................................................................................
int i;
JsonString jx;
jsonInit(&jx, ctx);
jsonAppendChar(&jx, '[');
for(i=0; i<argc; i++){
jsonAppendSeparator(&jx);
jsonAppendValue(&jx, argv[i]);
}
jsonAppendChar(&jx, ']');
jsonResult(&jx);
}
/*
................................................................................
return;
}
jsonAppendSeparator(&jx);
z = (const char*)sqlite3_value_text(argv[i]);
n = (u32)sqlite3_value_bytes(argv[i]);
jsonAppendString(&jx, z, n);
jsonAppendChar(&jx, ':');
jsonAppendValue(&jx, argv[i+1]);
}
jsonAppendChar(&jx, '}');
jsonResult(&jx);
}
/*
................................................................................
if( (argc&1)==0 ) {
jsonWrongNumArgs(ctx, "replace");
return;
}
if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return;
if( x.nNode ){
for(i=1; i<(u32)argc; i+=2){
zPath = (const char*)sqlite3_value_text(argv[i]);
if( zPath==0 ) continue;
if( zPath[0]!='$' ) continue;
pNode = jsonLookup(&x, 0, &zPath[1], 0);
if( pNode ){
pNode->jnFlags |= JNODE_REPLACE;
pNode->iVal = i+1;
}
}
if( x.aNode[0].jnFlags & JNODE_REPLACE ){
sqlite3_result_value(ctx, argv[x.aNode[0].iVal]);
}else{
jsonReturn(x.aNode, ctx, argv);
................................................................................
if( (argc&1)==0 ) {
jsonWrongNumArgs(ctx, bIsSet ? "set" : "insert");
return;
}
if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return;
if( x.nNode ){
for(i=1; i<(u32)argc; i+=2){
zPath = (const char*)sqlite3_value_text(argv[i]);
if( zPath==0 ) continue;
if( zPath[0]!='$' ) continue;
bApnd = 0;
pNode = jsonLookup(&x, 0, &zPath[1], &bApnd);
if( x.oom ){
sqlite3_result_error_nomem(ctx);
goto jsonSetDone;
}else if( pNode && (bApnd || bIsSet) ){
pNode->jnFlags |= JNODE_REPLACE;
pNode->iVal = i+1;
}
}
if( x.aNode[0].jnFlags & JNODE_REPLACE ){
sqlite3_result_value(ctx, argv[x.aNode[0].iVal]);
}else{
jsonReturn(x.aNode, ctx, argv);
|
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76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 ... 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 ... 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 ... 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 ... 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 ... 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 .... 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 .... 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 .... 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 |
/* Bit values for the JsonNode.jnFlag field */ #define JNODE_RAW 0x01 /* Content is raw, not JSON encoded */ #define JNODE_ESCAPE 0x02 /* Content is text with \ escapes */ #define JNODE_REMOVE 0x04 /* Do not output */ #define JNODE_REPLACE 0x08 /* Replace with JsonNode.iVal */ #define JNODE_APPEND 0x10 /* More ARRAY/OBJECT entries at u.iAppend */ #define JNODE_JSON 0x20 /* Treat REPLACE as JSON text */ /* A single node of parsed JSON */ struct JsonNode { u8 eType; /* One of the JSON_ type values */ u8 jnFlags; /* JNODE flags */ ................................................................................ /* ** Append a function parameter value to the JSON string under ** construction. */ static void jsonAppendValue( JsonString *p, /* Append to this JSON string */ sqlite3_value *pValue, /* Value to append */ u8 textIsJson /* Try to treat text values as JSON */ ){ switch( sqlite3_value_type(pValue) ){ case SQLITE_NULL: { jsonAppendRaw(p, "null", 4); break; } case SQLITE_INTEGER: ................................................................................ u32 n = (u32)sqlite3_value_bytes(pValue); jsonAppendRaw(p, z, n); break; } case SQLITE_TEXT: { const char *z = (const char*)sqlite3_value_text(pValue); u32 n = (u32)sqlite3_value_bytes(pValue); if( textIsJson ){ jsonAppendRaw(p, z, n); }else{ jsonAppendString(p, z, n); } break; } default: { if( p->bErr==0 ){ sqlite3_result_error(p->pCtx, "JSON cannot hold BLOB values", -1); p->bErr = 1; jsonReset(p); ................................................................................ u32 j = 1; jsonAppendChar(pOut, '['); for(;;){ while( j<=pNode->n ){ if( pNode[j].jnFlags & (JNODE_REMOVE|JNODE_REPLACE) ){ if( pNode[j].jnFlags & JNODE_REPLACE ){ jsonAppendSeparator(pOut); jsonAppendValue(pOut, aReplace[pNode[j].iVal], (pNode[j].jnFlags & JNODE_JSON)!=0); } }else{ jsonAppendSeparator(pOut); jsonRenderNode(&pNode[j], pOut, aReplace); } j += jsonNodeSize(&pNode[j]); } ................................................................................ for(;;){ while( j<=pNode->n ){ if( (pNode[j+1].jnFlags & JNODE_REMOVE)==0 ){ jsonAppendSeparator(pOut); jsonRenderNode(&pNode[j], pOut, aReplace); jsonAppendChar(pOut, ':'); if( pNode[j+1].jnFlags & JNODE_REPLACE ){ jsonAppendValue(pOut, aReplace[pNode[j+1].iVal], (pNode[j+1].jnFlags & JNODE_JSON)!=0); }else{ jsonRenderNode(&pNode[j+1], pOut, aReplace); } } j += 1 + jsonNodeSize(&pNode[j+1]); } if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; ................................................................................ int i; JsonString jx; jsonInit(&jx, ctx); jsonAppendChar(&jx, '['); for(i=0; i<argc; i++){ jsonAppendSeparator(&jx); jsonAppendValue(&jx, argv[i], 0); } jsonAppendChar(&jx, ']'); jsonResult(&jx); } /* ................................................................................ return; } jsonAppendSeparator(&jx); z = (const char*)sqlite3_value_text(argv[i]); n = (u32)sqlite3_value_bytes(argv[i]); jsonAppendString(&jx, z, n); jsonAppendChar(&jx, ':'); jsonAppendValue(&jx, argv[i+1], 0); } jsonAppendChar(&jx, '}'); jsonResult(&jx); } /* ................................................................................ if( (argc&1)==0 ) { jsonWrongNumArgs(ctx, "replace"); return; } if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; if( x.nNode ){ for(i=1; i<(u32)argc; i+=2){ u8 jnFlags = JNODE_REPLACE; zPath = (const char*)sqlite3_value_text(argv[i]); if( zPath==0 ) continue; if( zPath[0]!='$' ) continue; if( zPath[1]=='$' ){ zPath++; jnFlags = JNODE_REPLACE|JNODE_JSON; } pNode = jsonLookup(&x, 0, &zPath[1], 0); if( pNode ){ pNode->jnFlags &= ~JNODE_JSON; pNode->jnFlags |= jnFlags; pNode->iVal = i+1; } } if( x.aNode[0].jnFlags & JNODE_REPLACE ){ sqlite3_result_value(ctx, argv[x.aNode[0].iVal]); }else{ jsonReturn(x.aNode, ctx, argv); ................................................................................ if( (argc&1)==0 ) { jsonWrongNumArgs(ctx, bIsSet ? "set" : "insert"); return; } if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; if( x.nNode ){ for(i=1; i<(u32)argc; i+=2){ u8 jnFlags = JNODE_REPLACE; zPath = (const char*)sqlite3_value_text(argv[i]); if( zPath==0 ) continue; if( zPath[0]!='$' ) continue; if( zPath[1]=='$' ){ zPath++; jnFlags = JNODE_REPLACE|JNODE_JSON; } bApnd = 0; pNode = jsonLookup(&x, 0, &zPath[1], &bApnd); if( x.oom ){ sqlite3_result_error_nomem(ctx); goto jsonSetDone; }else if( pNode && (bApnd || bIsSet) ){ pNode->jnFlags &= ~JNODE_JSON; pNode->jnFlags |= jnFlags; pNode->iVal = i+1; } } if( x.aNode[0].jnFlags & JNODE_REPLACE ){ sqlite3_result_value(ctx, argv[x.aNode[0].iVal]); }else{ jsonReturn(x.aNode, ctx, argv); |
Changes to test/json101.test.
46 47 48 49 50 51 52 53 54 |
do_catchsql_test json1-2.3 {
SELECT json_object('a',1,'b');
} {1 {json_object() requires an even number of arguments}}
do_catchsql_test json1-2.4 {
SELECT json_object('a',1,'b',x'abcd');
} {1 {JSON cannot hold BLOB values}}
finish_test
|
> > > > > > > > > > > > |
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 |
do_catchsql_test json1-2.3 {
SELECT json_object('a',1,'b');
} {1 {json_object() requires an even number of arguments}}
do_catchsql_test json1-2.4 {
SELECT json_object('a',1,'b',x'abcd');
} {1 {JSON cannot hold BLOB values}}
do_execsql_test json1-3.1 {
SELECT json_replace('{"a":1,"b":2}','$.a','[3,4,5]');
} {{{"a":"[3,4,5]","b":2}}}
do_execsql_test json1-3.2 {
SELECT json_replace('{"a":1,"b":2}','$$.a','[3,4,5]');
} {{{"a":[3,4,5],"b":2}}}
do_execsql_test json1-3.3 {
SELECT json_type(json_set('{"a":1,"b":2}','$.b','{"x":3,"y":4}'),'$.b');
} {text}
do_execsql_test json1-3.4 {
SELECT json_type(json_set('{"a":1,"b":2}','$$.b','{"x":3,"y":4}'),'$.b');
} {object}
finish_test
|