bool operator==(const value& lhs, const value& rhs) {
if (lhs.type() != rhs.type()) {
return false;
}
switch (static_cast<int>(lhs.type())) {
#define BSONCXX_ENUM(type, val) \
case val: \
return lhs.get_##type() == rhs.get_##type();
#include <bsoncxx/enums/type.hpp>
#undef BSONCXX_ENUM
}
BSONCXX_UNREACHABLE;
}
/// Like coerce(const value&) but assigns the value to a reference
/// instead of returning it. May be more efficient for complex values
/// (arrays, maps, etc.)
///
/// @related proton::value
template<class T> void coerce(const value& v, T& x) {
codec::decoder d(v, false);
if (type_id_is_scalar(v.type())) {
scalar s;
d >> s;
x = internal::coerce<T>(s);
} else {
static bool can_convert_from(const value& val) {
if (val.type() != value_type::vector_type) {
return false;
}
const auto& vec = val.get<value_vector_type>();
return vec.size() == sizeof...(T)
&& tuple_value_converter<T...>::types_match(vec, 0);
}
static MetadataDefiniton get( value const &v )
{
MetadataDefiniton m;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
m.name = v.get<std::string>( "name" );
m.type = v.get<std::string>( "type" );
return m;
}
static PostingJoinOperatorConfiguration get( value const &v )
{
PostingJoinOperatorConfiguration c;
if( v.type( ) != is_object ) {
throw bad_value_cast( );
}
c.name = v.get<std::string>( "name" );
c.description = v.get<std::string>( "description" );
return c;
}
static DocumentGetRequest get( value const &v )
{
DocumentGetRequest d;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
// TODO: should we also accept int, float? how can we fall back?
d.docid = v.get<std::string>( "docid", "" );
return d;
}
static StorageConfiguration get( value const &v )
{
StorageConfiguration c;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
c.metadata = v.get<std::vector<struct MetadataDefiniton> >( "metadata", std::vector<struct MetadataDefiniton>( ) );
c.attributes = v.get<std::vector<std::string> >( "attributes", std::vector<std::string>( ) );
c.types = v.get<std::vector<std::string> >( "types", std::vector<std::string>( ) );
return c;
}
static SummarizerFunctionConfiguration get( value const &v )
{
SummarizerFunctionConfiguration c;
if( v.type( ) != is_object ) {
throw bad_value_cast( );
}
c.name = v.get<std::string>( "name" );
c.description = v.get<std::string>( "description" );
c.parameter = v.get<std::vector<FunctionParameter> >( "parameter" );
return c;
}
static ServiceConfiguration get( value const &v )
{
ServiceConfiguration c;
if( v.type( ) != is_object ) {
throw bad_value_cast( );
}
c.weighting_functions = v.get<std::vector<WeightingFunctionConfiguration> >( "weighting_functions", std::vector<WeightingFunctionConfiguration>( ) );
c.summarizer_functions = v.get<std::vector<SummarizerFunctionConfiguration> >( "summarizer_functions", std::vector<SummarizerFunctionConfiguration>( ) );
c.posting_join_operators = v.get<std::vector<PostingJoinOperatorConfiguration> >( "posting_join_operators", std::vector<PostingJoinOperatorConfiguration>( ) );
return c;
}
static DocumentGetAnswer get( value const &v )
{
DocumentGetAnswer a;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
a.docno = v.get<strus::Index>( "docno" );
a.attributes = v.get<std::vector<std::pair<std::string, std::string> > >( "attributes" );
a.metadata = v.get<std::vector<std::pair<std::string, strus::NumericVariant> > >( "metadata" );
a.forward = v.get<std::vector<boost::tuple<std::string, std::string, strus::Index> > >( "forward" );
a.search = v.get<std::vector<boost::tuple<std::string, std::string, strus::Index> > >( "search" );
return a;
}
static DocumentInsertRequest get( value const &v )
{
DocumentInsertRequest d;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
// TODO: should we also accept int, float? how can we fall back?
d.docid = v.get<std::string>( "docid", "" );
d.attributes = v.get<std::vector<std::pair<std::string, std::string> > >( "attributes" );
d.metadata = v.get<std::vector<std::pair<std::string, strus::NumericVariant> > >( "metadata" );
d.forward = v.get<std::vector<boost::tuple<std::string, std::string, strus::Index> > >( "forward" );
d.search = v.get<std::vector<boost::tuple<std::string, std::string, strus::Index> > >( "search" );
return d;
}
static boost::tuple<std::string, std::string, strus::Index> get( value const &v )
{
boost::tuple<std::string, std::string, strus::Index> t;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
t = boost::make_tuple(
v.get<std::string>( "type" ),
v.get<std::string>( "value" ),
v.get<strus::Index>( "pos" )
);
return t;
}
static void GenStat(Stat& stat, const value& v) {
switch (v.type()) {
case value_type::array:
{
const array& a = array_cast(v);
for (array::const_iterator itr = a.begin(); itr != a.end(); ++itr)
GenStat(stat, *itr);
stat.arrayCount++;
stat.elementCount += a.size();
}
break;
case value_type::object:
{
const object& o = object_cast(v);
for (object::const_iterator itr = o.begin(); itr != o.end(); ++itr) {
GenStat(stat, itr->second);
stat.stringLength += itr->first.size();
}
stat.objectCount++;
stat.memberCount += o.size();
stat.stringCount += o.size(); // member names
}
break;
case value_type::string:
stat.stringCount++;
stat.stringLength += string_cast(v).length();
break;
case value_type::number:
stat.numberCount++;
break;
case value_type::boolean:
if (bool_cast(v))
stat.trueCount++;
else
stat.falseCount++;
break;
case value_type::null:
stat.nullCount++;
break;
}
}
static StorageCreateParameters get( value const &v )
{
StorageCreateParameters p;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
p.database = v.get<std::string>( "database", DEFAULT_DATABASE );
p.compression = v.get<bool>( "compression", LEVELDB_DATABASE_DEFAULT_COMPRESSION );
// TODO: we should introspect them via the database configuration for
// the specific implementation
p.cache_size = v.get<size_t>( "cache_size", LEVELDB_DATABASE_DEFAULT_LRU_CACHESIZE );
p.max_open_files = v.get<size_t>( "max_open_files", LEVELDB_DATABASE_DEFAULT_MAX_OPEN_FILES );
p.write_buffer_size = v.get<size_t>( "write_buffer_size", LEVELDB_DATABASE_DEFAULT_WRITE_BUFFER_SIZE );
p.block_size = v.get<size_t>( "block_size", LEVELDB_DATABASE_DEFAULT_BLOCK_SIZE );
p.metadata = v.get<std::vector<struct MetadataDefiniton> >( "metadata", std::vector<struct MetadataDefiniton>( ) );
return p;
}
void write_value(scanner& sc, writer& wr, const value& val) {
switch (val.type()) {
case value_type::number_type: {
read_value(sc);
wr.append(stringize_number(val.number_value()));
break;
}
case value_type::string_type: {
read_value(sc);
wr.append("\"");
wr.append(escape_string(val.string_value()));
wr.append("\"");
break;
}
case value_type::bool_type: {
read_value(sc);
wr.append(val.bool_value() ? "true" : "false");
break;
}
case value_type::group_type: {
if (sc.peek_token().is_char('{')) {
write_group(sc, wr, true, val.group_value());
} else {
read_value(sc);
scanner dummy_scanner = make_scanner("{}");
write_group(dummy_scanner, wr, true, val.group_value());
}
break;
}
case value_type::vector_type: {
if (sc.peek_token().is_char('[')) {
write_vector(sc, wr, val.vector_value());
} else {
read_value(sc);
scanner dummy_scanner = make_scanner("[]");
write_vector(dummy_scanner, wr, val.vector_value());
}
break;
}
default: {
break;
}
}
}
static std::pair<std::string, strus::NumericVariant> get( value const &v )
{
std::pair<std::string, strus::NumericVariant> p;
if( v.type( ) != is_object) {
throw bad_value_cast( );
}
p.first = v.get<std::string>( "key" );
value val = v["value"];
switch( val.type( ) ) {
case is_boolean:
// TODO: really? Do we allow this?
p.second = ( v.get<bool>( "value" ) ) ? 1 : 0;
break;
case is_string:
// TODO: really? Do we allow this?
case is_number:
if( is_of_type( val, p.second.variant.Int ) ) {
p.second = v.get<BOOST_TYPEOF( p.second.variant.Int )>( "value" );
} else if( is_of_type( val, p.second.variant.UInt ) ) {
p.second = v.get<BOOST_TYPEOF( p.second.variant.UInt )>( "value" );
} else if( is_of_type( val, p.second.variant.Float ) ) {
p.second = v.get<BOOST_TYPEOF( p.second.variant.Float )>( "value" );
} else {
throw bad_value_cast( );
}
break;
case is_undefined:
case is_null:
// TODO: how do we map absence
case is_object:
case is_array:
default:
throw bad_value_cast( );
}
return p;
}
int value_length(const value& val, int wrap_length) {
switch (val.type()) {
case value_type::number_type: {
return stringize_number(val.number_value()).size();
}
case value_type::string_type: {
return 2 + escape_string(val.string_value()).size();
}
case value_type::bool_type: {
return val.bool_value() ? 4 : 5;
}
case value_type::group_type: {
return group_length(val.group_value());
}
case value_type::vector_type: {
return vector_length(val.vector_value());
}
default: {
return 0;
}
}
}
static FunctionParameter get( value const &v )
{
FunctionParameter p;
if( v.type( ) != is_object ) {
throw bad_value_cast( );
}
std::string s = v.get<std::string>( "type" );
if( s.compare( "feature" ) == 0 ) {
p.type = FUNCTION_TYPE_FEATURE;
} else if( s.compare( "attribute" ) == 0 ) {
p.type = FUNCTION_TYPE_ATTRIBUTE;
} else if( s.compare( "metadata" ) == 0 ) {
p.type = FUNCTION_TYPE_METADATA;
} else if( s.compare( "numeric" ) == 0 ) {
p.type = FUNCTION_TYPE_NUMERIC;
} else if( s.compare( "string" ) == 0 ) {
p.type = FUNCTION_TYPE_STRING;
} else {
throw bad_value_cast( );
}
p.name = v.get<std::string>( "name" );
p.description = v.get<std::string>( "description" );
return p;
}
bool sqlitehandle::query (const string &sql, value &into,
const statstring &indexby)
{
sqlite3_stmt *qhandle;
int qres;
int rowcount=0;
int colcount;
int i;
statstring curidx;
bool done = false;
into.clear ();
if (sqlite3_prepare (hdl, sql.str(), sql.strlen(), &qhandle, 0) != SQLITE_OK)
{
errcode = 1;
errstr = "Could not prepare: %s" %format (sqlite3_errmsg(hdl));
return false;
}
if (! (qres = sqlite3_step (qhandle)))
{
errcode = 1;
errstr = "Error making first step: %s" %format (sqlite3_errmsg(hdl));
sqlite3_finalize (qhandle);
return false;
}
colcount = sqlite3_column_count (qhandle);
if (colcount == 0)
{
into("rowschanged") = sqlite3_changes (hdl);
sqlite3_finalize (qhandle);
return true;
}
statstring colnames[colcount];
value colidx;
for (i=0; i<colcount; ++i)
{
colnames[i] = sqlite3_column_name (qhandle, i);
colidx[colnames[i]] = i;
}
int indexfield = -1;
if (colidx.exists (indexby)) indexfield = colidx[indexby];
if (! done) do
{
switch (qres)
{
case SQLITE_BUSY:
sleep (1);
sqlite3_reset(qhandle);
continue;
case SQLITE_MISUSE: // achtung, fallthrough
case SQLITE_ERROR:
errcode = 1;
errstr = "Error in sqlite3_step: %s" %format (sqlite3_errmsg(hdl));
done = true;
break;
case SQLITE_DONE:
done = true;
break;
case SQLITE_ROW:
{
if (indexfield>=0)
{
curidx = sqlite3_column_text (qhandle, indexfield);
}
value &myrow = (indexfield<0) ? into.newval() : into[curidx];
for (int i=0; i<colcount; i++)
{
int ctype = sqlite3_column_type (qhandle, i);
statstring &curcol = colnames[i];
switch (ctype)
{
case SQLITE_INTEGER:
myrow[curcol] = sqlite3_column_int (qhandle, i);
break;
case SQLITE_FLOAT:
myrow[curcol] = sqlite3_column_double (qhandle, i);
break;
case SQLITE_BLOB:
// FIXME: use sqlite3_column_blob
case SQLITE_TEXT:
myrow[curcol] = sqlite3_column_text (qhandle, i);
break;
default:
break;
}
}
}
break;
}
rowcount++;
} while ((qres = sqlite3_step (qhandle)) && !done);
int finalize_result = sqlite3_finalize (qhandle);
if (finalize_result != SQLITE_OK && finalize_result != SQLITE_SCHEMA)
{
errcode = 1;
errstr = "Error finalizing: %s" %format (sqlite3_errmsg(hdl));
return false;
}
into ("insertid") = sqlite3_last_insert_rowid (hdl);
into.type (t_dict);
string tmp = into.tojson();
return true;
}
value flatten(value const& v) {
return {flatten(v.data()), flatten(v.type())};
}
/// Type-safe factory function to construct an event from an unchecked value.
/// @param v The value to check and convert into an event.
/// @returns A valid event according *v* if `v.type().check(v.data())`.
static event make(value v) {
return type_check(v.type(), v.data()) ? event{std::move(v)} : caf::none;
}
static bool can_convert_from(const value& val) { return val.type() == value_type::vector_type; }