Getting the Written Fragment Info

A write operation can create one or more fragments. You can get information about the written fragments as follows:

C

// ... create context ctx
// ... create query

// Get the number of written fragments
unsigned int num;
tiledb_query_get_fragment_num(ctx, query, &num);

// Get the fragment URI by index (0 <= idx < num) 
const char* uri;
tiledb_query_get_fragment_uri(ctx, query, idx, &uri); 

// Get the timestamp range by index (0 <= idx < num)
unsigned long long t1, t2;
tiledb_query_get_fragment_timestamp_range(ctx, query, idx, &t1, &t2);

C++

// ... create query

// Get the number of written fragments
uint32_t num = query.fragment_num();

// Get the fragment URI by index (0 <= idx < num) 
std::string uri = query.fragment_uri(idx);

// Get the timestamp range by index (0 <= idx < num)
std::pair<uint64_t, uint64_t> range = query.fragment_timestamp_range(idx);

Python

with tiledb.DenseArray(array_name, 'w') as A:
    A[:] = data
    # returns a dict of {filename: (timestamp1,timestamp2)}
    print(A.last_write_info)

R

# Continuing from previous example on dense variable length array
# (but this works with any array after a write)

# Number of fragments
numfrag <- tiledb_query_get_fragment_num(qry)

# URI of given fragment, with 0 <= idx < numfrag
uri <- tiledb_query_get_fragment_uri(qry, idx)

# Timestamp range of given fragment, with 0 <= idx < numfrag
tsrange <- tiledb_query_get_fragment_timestamp_range(qry, idx)

Java

// ... create query

// Get the number of written fragments
long num = query.getFragmentNum();

// Get the fragment URI by index (0 <= idx < num) 
String uri = query.getFragmentURI(idx);

// Get the timestamp range by index (0 <= idx < num)
Pair<Long, Long> range = query.getFragmentTimestampRange(idx);

Go

// ... create context ctx
// ... create write query
// ... submit write query

// Get the number of written fragments
num, _ := query.GetFragmentNum()

// Get the fragment URI by index (0 <= idx < num) 
uri, _ := query.GetFragmentURI(idx) 

// Get the timestamp range by index (0 <= idx < num)
t1, t2, _ := query.GetFragmentTimestampRange(idx)

C#

// ... create query

// Get the number of written fragments
uint num = query.FragmentNum();

// Get the fragment URI by index (0 <= idx < num)
string uri = query.FragmentUri(idx);

// Get the timestamp range by index
Tuple<ulong, ulong> timestampRange = query.FragmentTimestampRange(idx);