Query Results::get_query() const
{
validate_read();
switch (m_mode) {
case Mode::Empty:
case Mode::Query:
return m_query;
case Mode::TableView: {
// A TableView has an associated Query if it was produced by Query::find_all. This is indicated
// by TableView::get_query returning a Query with a non-null table.
Query query = m_table_view.get_query();
if (query.get_table()) {
return query;
}
// The TableView has no associated query so create one with no conditions that is restricted
// to the rows in the TableView.
m_table_view.sync_if_needed();
return Query(*m_table, std::make_unique<TableView>(m_table_view));
}
case Mode::LinkView:
return m_table->where(m_link_view);
case Mode::Table:
return m_table->where();
}
REALM_UNREACHABLE();
}
ResultsNotifier::ResultsNotifier(Results& target)
: CollectionNotifier(target.get_realm())
, m_target_results(&target)
, m_target_is_in_table_order(target.is_in_table_order())
{
Query q = target.get_query();
set_table(*q.get_table());
m_query_handover = Realm::Internal::get_shared_group(*get_realm()).export_for_handover(q, MutableSourcePayload::Move);
SortDescriptor::generate_patch(target.get_sort(), m_sort_handover);
}
JNIEXPORT jlong JNICALL Java_io_realm_internal_TableQuery_nativeRemove(
JNIEnv* env, jobject, jlong nativeQueryPtr, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return 0;
try {
return pQuery->remove(S(start), S(end), S(limit));
} CATCH_STD()
return 0;
}
JNIEXPORT jlong JNICALL Java_io_realm_internal_TableQuery_nativeFindAll(
JNIEnv* env, jobject, jlong nativeQueryPtr, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return -1;
try {
TableView* pResultView = new TableView( pQuery->find_all(S(start), S(end), S(limit)) );
return reinterpret_cast<jlong>(pResultView);
} CATCH_STD()
return -1;
}
JNIEXPORT jdouble JNICALL Java_io_realm_internal_TableQuery_nativeMinimumDouble(
JNIEnv* env, jobject, jlong nativeQueryPtr,
jlong columnIndex, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!COL_INDEX_AND_TYPE_VALID(env, pTable, columnIndex, type_Double) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return 0;
try {
return pQuery->minimum_double(S(columnIndex), NULL, S(start), S(end), S(limit));
} CATCH_STD()
return 0;
}
JNIEXPORT jlong JNICALL Java_io_realm_internal_TableQuery_nativeMinimumDate(
JNIEnv* env, jobject, jlong nativeQueryPtr,
jlong columnIndex, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!COL_INDEX_AND_TYPE_VALID(env, pTable, columnIndex, type_DateTime) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return 0;
try {
// This exploits the fact that dates are stored as int in core
return pQuery->minimum_int(S(columnIndex), NULL, S(start), S(end), S(limit));
} CATCH_STD()
return 0;
}
JNIEXPORT jdouble JNICALL Java_io_realm_internal_TableQuery_nativeAverageFloat(
JNIEnv* env, jobject, jlong nativeQueryPtr,
jlong columnIndex, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!COL_INDEX_AND_TYPE_VALID(env, pTable, columnIndex, type_Float) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return 0;
try {
size_t resultcount;
double avg = pQuery->average_float(S(columnIndex), &resultcount, S(start), S(end), S(limit));
return avg;
} CATCH_STD()
return 0;
}
JNIEXPORT jdouble JNICALL Java_io_realm_internal_TableQuery_nativeAverageInt(
JNIEnv* env, jobject, jlong nativeQueryPtr,
jlong columnIndex, jlong start, jlong end, jlong limit)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery) ||
!COL_INDEX_AND_TYPE_VALID(env, pTable, columnIndex, type_Int) ||
!ROW_INDEXES_VALID(env, pTable, start, end, limit))
return 0;
try {
size_t resultcount;
//TODO: return resultcount?
double avg = pQuery->average_int(S(columnIndex), &resultcount, S(start), S(end), S(limit));
//fprintf(stderr, "!!!Average(%d, %d) = %f (%d results)\n", start, end, avg, resultcount); fflush(stderr);
return avg;
} CATCH_STD()
return 0;
}
JNIEXPORT jlong JNICALL Java_io_realm_internal_TableQuery_nativeFind(
JNIEnv* env, jobject, jlong nativeQueryPtr, jlong fromTableRow)
{
Query* pQuery = Q(nativeQueryPtr);
Table* pTable = Ref2Ptr(pQuery->get_table());
if (!QUERY_VALID(env, pQuery))
return -1;
// It's valid to go 1 past the end index
if ((fromTableRow < 0) || (S(fromTableRow) > pTable->size())) {
// below check will fail with appropriate exception
(void) ROW_INDEX_VALID(env, pTable, fromTableRow);
return -1;
}
try {
size_t r = pQuery->find( S(fromTableRow) );
return (r == not_found) ? jlong(-1) : jlong(r);
} CATCH_STD()
return -1;
}