public static void Dump(IntPtr db)
{
var options = Native.leveldb_readoptions_create();
IntPtr iter = Native.leveldb_create_iterator(db, options);
for (Native.leveldb_iter_seek_to_first(iter);
Native.leveldb_iter_valid(iter);
Native.leveldb_iter_next(iter))
{
string key = Native.leveldb_iter_key(iter);
string value = Native.leveldb_iter_value(iter);
Console.WriteLine("'{0}' => '{1}'", key, value);
}
Native.leveldb_iter_destroy(iter);
}
public void IsValid()
{
var writeOptions = Native.leveldb_writeoptions_create();
Native.leveldb_put(Database, writeOptions, "key1", "value1");
var readOptions = Native.leveldb_readoptions_create();
IntPtr iter = Native.leveldb_create_iterator(Database, readOptions);
Native.leveldb_iter_seek_to_last(iter);
Assert.IsTrue(Native.leveldb_iter_valid(iter));
Native.leveldb_iter_next(iter);
Assert.IsFalse(Native.leveldb_iter_valid(iter));
}
public IEnumerator <KeyValuePair <string, string> > GetEnumerator()
{
CheckDisposed();
var options = new ReadOptions();
IntPtr iter = IntPtr.Zero;
try {
iter = Native.leveldb_create_iterator(Handle, options.Handle);
for (Native.leveldb_iter_seek_to_first(iter);
Native.leveldb_iter_valid(iter);
Native.leveldb_iter_next(iter))
{
string key = Native.leveldb_iter_key(iter);
string value = Native.leveldb_iter_value(iter);
var kvp = new KeyValuePair <string, string>(key, value);
yield return(kvp);
}
} finally {
if (iter != IntPtr.Zero)
{
Native.leveldb_iter_destroy(iter);
}
}
}
