/* arg0: TableMetadata wrapping NdbDictionary::Table *
arg1: Ndb *
arg2: number of columns
arg3: array of NdbDictionary::Column *
*/
Handle<Value> getRecordForMapping(const Arguments &args) {
DEBUG_MARKER(UDEB_DEBUG);
HandleScope scope;
const NdbDictionary::Table *table =
unwrapPointer<const NdbDictionary::Table *>(args[0]->ToObject());
Ndb * ndb = unwrapPointer<Ndb *>(args[1]->ToObject());
unsigned int nColumns = args[2]->Int32Value();
Record * record = new Record(ndb->getDictionary(), nColumns);
for(unsigned int i = 0 ; i < nColumns ; i++) {
const NdbDictionary::Column * col =
unwrapPointer<const NdbDictionary::Column *>
(args[3]->ToObject()->Get(i)->ToObject());
record->addColumn(col);
}
record->completeTableRecord(table);
return scope.Close(Record_Wrapper(record));
}
/* doAsyncCallback() runs in the main thread. We don't want it to block.
TODO: verify whether any IO is done
by checking WaitMetaRequestCount at the start and end.
*/
void GetTableCall::doAsyncCallback(Local<Object> ctx) {
HandleScope scope;
DEBUG_PRINT("GetTableCall::doAsyncCallback: return_val %d", return_val);
/* User callback arguments */
Handle<Value> cb_args[2];
cb_args[0] = Null();
cb_args[1] = Null();
/* TableMetadata = {
database : "" , // Database name
name : "" , // Table Name
columns : [] , // ordered array of DBColumn objects
indexes : [] , // array of DBIndex objects
partitionKey : [] , // ordered array of column numbers in the partition key
};
*/
if(ndb_table && ! return_val) {
Local<Object> table = NdbDictTableEnv.newWrapper();
wrapPointerInObject(ndb_table, NdbDictTableEnv, table);
// database
table->Set(String::NewSymbol("database"), String::New(arg1));
// name
table->Set(String::NewSymbol("name"), String::New(ndb_table->getName()));
// columns
Local<Array> columns = Array::New(ndb_table->getNoOfColumns());
for(int i = 0 ; i < ndb_table->getNoOfColumns() ; i++) {
Handle<Object> col = buildDBColumn(ndb_table->getColumn(i));
columns->Set(i, col);
}
table->Set(String::NewSymbol("columns"), columns);
// indexes (primary key & secondary)
Local<Array> js_indexes = Array::New(idx_list.count + 1);
js_indexes->Set(0, buildDBIndex_PK()); // primary key
for(unsigned int i = 0 ; i < idx_list.count ; i++) { // secondary indexes
const NdbDictionary::Index * idx =
arg0->dict->getIndex(idx_list.elements[i].name, arg2);
js_indexes->Set(i+1, buildDBIndex(idx));
}
table->Set(String::NewSymbol("indexes"), js_indexes, ReadOnly);
// partitionKey
// Table Record (implementation artifact; not part of spec)
DEBUG_PRINT("Creating Table Record");
Record * rec = new Record(arg0->dict, ndb_table->getNoOfColumns());
for(int i = 0 ; i < ndb_table->getNoOfColumns() ; i++) {
rec->addColumn(ndb_table->getColumn(i));
}
rec->completeTableRecord(ndb_table);
table->Set(String::NewSymbol("record"), Record_Wrapper(rec));
// User Callback
cb_args[1] = table;
}
else {
cb_args[0] = String::New(arg0->dict->getNdbError().message);
}
callback->Call(ctx, 2, cb_args);
}
/* doAsyncCallback() runs in the main thread. We don't want it to block.
TODO: verify whether any IO is done
by checking WaitMetaRequestCount at the start and end.
*/
void GetTableCall::doAsyncCallback(Local<Object> ctx) {
const char *tableName;
HandleScope scope;
DEBUG_PRINT("GetTableCall::doAsyncCallback: return_val %d", return_val);
/* User callback arguments */
Handle<Value> cb_args[2];
cb_args[0] = Null();
cb_args[1] = Null();
/* TableMetadata = {
database : "" , // Database name
name : "" , // Table Name
columns : [] , // ordered array of DBColumn objects
indexes : [] , // array of DBIndex objects
partitionKey : [] , // ordered array of column numbers in the partition key
};
*/
if(ndb_table && ! return_val) {
Local<Object> table = NdbDictTableEnv.newWrapper();
const NdbDictionary::Table * js_ndb_table = ndb_table;
wrapPointerInObject(js_ndb_table, NdbDictTableEnv, table);
// database
table->Set(String::NewSymbol("database"), String::New(arg1));
// name
tableName = ndb_table->getName();
table->Set(String::NewSymbol("name"), String::New(tableName));
// partitionKey
int nPartitionKeys = 0;
Handle<Array> partitionKeys = Array::New();
table->Set(String::NewSymbol("partitionKey"), partitionKeys);
// columns
Local<Array> columns = Array::New(ndb_table->getNoOfColumns());
for(int i = 0 ; i < ndb_table->getNoOfColumns() ; i++) {
const NdbDictionary::Column *ndb_col = ndb_table->getColumn(i);
Handle<Object> col = buildDBColumn(ndb_col);
columns->Set(i, col);
if(ndb_col->getPartitionKey()) { /* partition key */
partitionKeys->Set(nPartitionKeys++, String::New(ndb_col->getName()));
}
}
table->Set(String::NewSymbol("columns"), columns);
// indexes (primary key & secondary)
Local<Array> js_indexes = Array::New(idx_list.count + 1);
js_indexes->Set(0, buildDBIndex_PK()); // primary key
for(unsigned int i = 0 ; i < idx_list.count ; i++) { // secondary indexes
const NdbDictionary::Index * idx =
dict->getIndex(idx_list.elements[i].name, arg2);
js_indexes->Set(i+1, buildDBIndex(idx));
}
table->Set(String::NewSymbol("indexes"), js_indexes, ReadOnly);
// Table Record (implementation artifact; not part of spec)
DEBUG_PRINT("Creating Table Record");
Record * rec = new Record(dict, ndb_table->getNoOfColumns());
for(int i = 0 ; i < ndb_table->getNoOfColumns() ; i++) {
rec->addColumn(ndb_table->getColumn(i));
}
rec->completeTableRecord(ndb_table);
table->Set(String::NewSymbol("record"), Record_Wrapper(rec));
// foreign keys (only foreign keys for which this table is the child)
// now create the javascript foreign key metadata objects for dictionary objects cached earlier
Local<Array> js_fks = Array::New(fk_count);
int fk_number = 0;
for(unsigned int i = 0 ; i < fk_list.count ; i++) {
NdbDictionary::ForeignKey fk;
if (fk_list.elements[i].type == NdbDictionary::Object::ForeignKey) {
const char * fk_name = fk_list.elements[i].name;
int fkGetCode = dict->getForeignKey(fk, fk_name);
DEBUG_PRINT("getForeignKey for %s returned %i", fk_name, fkGetCode);
// see if the foreign key child table is this table
if(splitNameMatchesDbAndTable(fk.getChildTable())) {
// the foreign key child table is this table; build the fk object
DEBUG_PRINT("Adding foreign key for %s at %i", fk.getName(), fk_number);
js_fks->Set(fk_number++, buildDBForeignKey(&fk));
}
}
}
table->Set(String::NewSymbol("foreignKeys"), js_fks, ReadOnly);
// Autoincrement Cache Impl (also not part of spec)
if(per_table_ndb) {
table->Set(String::NewSymbol("per_table_ndb"), Ndb_Wrapper(per_table_ndb));
}
// User Callback
cb_args[1] = table;
}
else {
cb_args[0] = NdbError_Wrapper(* ndbError);
}
callback->Call(ctx, 2, cb_args);
}