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Add range delete function to C-API (#6259)

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Summary:
It seems that the C-API doesn't expose the range delete functionality at the moment, so add the API.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6259

Differential Revision: D19290320

Pulled By: pdillinger

fbshipit-source-id: 3f403a4c3446d2042d55f1ece7cdc9c040f40c27
This commit is contained in:
Qinfan Wu 2020-01-06 10:44:48 -08:00 committed by Facebook Github Bot
parent 28e5a9a9fb
commit edaaa1fff2
3 changed files with 32 additions and 2 deletions
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11
db/c.cc
View file

@ -852,6 +852,17 @@ void rocksdb_delete_cf(
Slice(key, keylen)));
}
void rocksdb_delete_range_cf(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* start_key, size_t start_key_len,
const char* end_key, size_t end_key_len,
char** errptr) {
SaveError(errptr, db->rep->DeleteRange(options->rep, column_family->rep,
Slice(start_key, start_key_len), Slice(end_key, end_key_len)));
}
void rocksdb_merge(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,

16
db/c_test.c
View file

@ -1244,6 +1244,15 @@ int main(int argc, char** argv) {
rocksdb_put_cf(db, woptions, handles[1], "foo", 3, "hello", 5, &err);
CheckNoError(err);
rocksdb_put_cf(db, woptions, handles[1], "foobar1", 7, "hello1", 6, &err);
CheckNoError(err);
rocksdb_put_cf(db, woptions, handles[1], "foobar2", 7, "hello2", 6, &err);
CheckNoError(err);
rocksdb_put_cf(db, woptions, handles[1], "foobar3", 7, "hello3", 6, &err);
CheckNoError(err);
rocksdb_put_cf(db, woptions, handles[1], "foobar4", 7, "hello4", 6, &err);
CheckNoError(err);
rocksdb_flushoptions_t *flush_options = rocksdb_flushoptions_create();
rocksdb_flushoptions_set_wait(flush_options, 1);
rocksdb_flush_cf(db, flush_options, handles[1], &err);
@ -1256,6 +1265,9 @@ int main(int argc, char** argv) {
rocksdb_delete_cf(db, woptions, handles[1], "foo", 3, &err);
CheckNoError(err);
rocksdb_delete_range_cf(db, woptions, handles[1], "foobar2", 7, "foobar4", 7, &err);
CheckNoError(err);
CheckGetCF(db, roptions, handles[1], "foo", NULL);
CheckPinGetCF(db, roptions, handles[1], "foo", NULL);
@ -1308,7 +1320,7 @@ int main(int argc, char** argv) {
for (i = 0; rocksdb_iter_valid(iter) != 0; rocksdb_iter_next(iter)) {
i++;
}
CheckCondition(i == 1);
CheckCondition(i == 3);
rocksdb_iter_get_error(iter, &err);
CheckNoError(err);
rocksdb_iter_destroy(iter);
@ -1332,7 +1344,7 @@ int main(int argc, char** argv) {
for (i = 0; rocksdb_iter_valid(iter) != 0; rocksdb_iter_next(iter)) {
i++;
}
CheckCondition(i == 1);
CheckCondition(i == 3);
rocksdb_iter_get_error(iter, &err);
CheckNoError(err);
rocksdb_iter_destroy(iter);

7
include/rocksdb/c.h
View file

@ -267,6 +267,13 @@ extern ROCKSDB_LIBRARY_API void rocksdb_delete_cf(
rocksdb_column_family_handle_t* column_family, const char* key,
size_t keylen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_delete_range_cf(
rocksdb_t* db, const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* start_key, size_t start_key_len,
const char* end_key, size_t end_key_len,
char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_merge(
rocksdb_t* db, const rocksdb_writeoptions_t* options, const char* key,
size_t keylen, const char* val, size_t vallen, char** errptr);