private (MDBResultCode resultCode, MDBValue key, MDBValue value) Get(CursorOperation operation)
{
var mdbKey = new MDBValue();
var mdbValue = new MDBValue();
return(mdb_cursor_get(_handle, ref mdbKey, ref mdbValue, operation), mdbKey, mdbValue);
}
private bool Get(CursorOperation operation)
{
_currentKeyStructure = default(ValueStructure);
_currentValueStructure = default(ValueStructure);
return(Lmdb.mdb_cursor_get(_handle, out _currentKeyStructure, out _currentValueStructure, operation) == 0);
}
//TODO: tests
private KeyValuePair <byte[], byte[]> Get(CursorOperation operation, ValueStructure?key = null, ValueStructure?value = null)
{
var keyStruct = key.GetValueOrDefault();
var valueStruct = value.GetValueOrDefault();
var res = Native.Read(() => Native.mdb_cursor_get(_handle, ref keyStruct, ref valueStruct, operation));
return(new KeyValuePair <byte[], byte[]>(keyStruct.ToByteArray(res), valueStruct.ToByteArray(res)));
}
private (MDBResultCode resultCode, MDBValue key, MDBValue value) Get(CursorOperation operation, byte[] key)
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
return(Get(operation, key.AsSpan()));
}
private unsafe (MDBResultCode resultCode, MDBValue key, MDBValue value) Get(CursorOperation operation, ReadOnlySpan <byte> key)
{
fixed(byte *keyPtr = key)
{
var mdbKey = new MDBValue(key.Length, keyPtr);
var mdbValue = new MDBValue();
return(mdb_cursor_get(_handle, ref mdbKey, ref mdbValue, operation), mdbKey, mdbValue);
}
}
private bool Get(CursorOperation operation, byte[] key)
{
_currentValueStructure = default(ValueStructure);
var found = mdb_cursor_get(_handle, key, out _currentKeyStructure, out _currentValueStructure, operation) == 0;
if (found)
{
_getCurrent = _currentDefault;
}
return(found);
}
private KeyValuePair <byte[], byte[]>?Get(CursorOperation operation, ValueStructure?key = null, ValueStructure?value = null)
{
var keyStruct = key.GetValueOrDefault();
var valueStruct = value.GetValueOrDefault();
var res = NativeMethods.Read(lib => lib.mdb_cursor_get(_handle, ref keyStruct, ref valueStruct, operation));
return(res == NativeMethods.MDB_NOTFOUND
? (KeyValuePair <byte[], byte[]>?)null
: new KeyValuePair <byte[], byte[]>(keyStruct.ToByteArray(res), valueStruct.ToByteArray(res)));
}
private bool Get(CursorOperation operation, byte[] key, byte[] value)
{
var found = mdb_cursor_get(_handle, key, value, operation) == 0;
if (found)
{
_getCurrent = _currentWithOptimizedPair;
_currentPair = new KeyValuePair <byte[], byte[]>(key, value);
}
return(found);
}
private bool GetMultiple(CursorOperation operation)
{
byte[] key;
byte[] value;
var found = mdb_cursor_get(_handle, out key, out value, ref _currentKeyStructure, ref _currentValueStructure, operation) == 0;
if (found)
{
_currentPair = new KeyValuePair <byte[], byte[]>(key, value);
_getCurrent = _currentWithOptimizedPair;
}
return(found);
}
//TODO: tests
private KeyValuePair<byte[], byte[]> Get(CursorOperation operation, ValueStructure? key = null, ValueStructure? value = null)
{
var keyStruct = key.GetValueOrDefault();
var valueStruct = value.GetValueOrDefault();
var res = Native.Read(lib => lib.mdb_cursor_get(_handle, ref keyStruct, ref valueStruct, operation));
return new KeyValuePair<byte[], byte[]>(keyStruct.ToByteArray(res), valueStruct.ToByteArray(res));
}
private static extern int mdb_cursor_get(IntPtr cursor, ref ValueStructure key, ref ValueStructure data, CursorOperation op);
internal ArangoQueryOperation(CursorOperation cursorOperation, List <Etom> expressionTree)
{
_cursorOperation = cursorOperation;
ExpressionTree.AddRange(expressionTree);
}
internal ArangoQueryOperation(CursorOperation cursorOperation)
{
_cursorOperation = cursorOperation;
}
public static int mdb_cursor_get(IntPtr cursor, byte[] key, byte[] value, CursorOperation op)
{
using(var marshal = new MarshalValueStructure(key, value))
return checkRead(LmdbMethods.mdb_cursor_get(cursor, ref marshal.Key, ref marshal.Value, op));
}
public static extern int mdb_cursor_get(IntPtr cursor, ref ValueStructure key, ref ValueStructure data, CursorOperation op);
int INativeLibraryFacade.mdb_cursor_get(IntPtr cursor, ref ValueStructure key, ref ValueStructure data, CursorOperation op)
{
return(FallbackLibraryFacade.mdb_cursor_get(cursor, ref key, ref data, op));
}
public static int mdb_cursor_get(IntPtr cursor, byte[] key, byte[] value, CursorOperation op)
{
using (var marshal = new MarshalValueStructure(key, value))
return(checkRead(LmdbMethods.mdb_cursor_get(cursor, ref marshal.Key, ref marshal.Value, op)));
}
public static MDBResultCode mdb_cursor_get(IntPtr cursor, ref MDBValue key, ref MDBValue value, CursorOperation op)
{
return(LmdbMethods.mdb_cursor_get(cursor, ref key, ref value, op));
}
private bool Get(CursorOperation operation, byte[] key, byte[] value)
{
return(Lmdb.mdb_cursor_get(_handle, key, value, operation) == 0);
}
public static int mdb_cursor_get_multiple(IntPtr cursor, ref ValueStructure key, ref ValueStructure value, CursorOperation op)
{
return(checkRead(LmdbMethods.mdb_cursor_get(cursor, ref key, ref value, op)));
}
public static int mdb_cursor_get(IntPtr cursor, out byte[] key, out byte[] value, ref ValueStructure keyStructure, ref ValueStructure valueStructure, CursorOperation op)
{
key = value = null;
var result = checkRead(LmdbMethods.mdb_cursor_get(cursor, ref keyStructure, ref valueStructure, op));
if (result == 0)
{
key = keyStructure.GetBytes();
value = valueStructure.GetBytes();
}
return result;
}
public static int mdb_cursor_get(IntPtr cursor, out ValueStructure key, out ValueStructure value, CursorOperation op)
{
key = value = default(ValueStructure);
return checkRead(LmdbMethods.mdb_cursor_get(cursor, ref key, ref value, op));
}
int INativeLibraryFacade.mdb_cursor_get(IntPtr cursor, ref ValueStructure key, ref ValueStructure data, CursorOperation op)
{
return FallbackLibraryFacade.mdb_cursor_get(cursor, ref key, ref data, op);
}
public static int mdb_cursor_get(IntPtr cursor, out byte[] key, out byte[] value, ref ValueStructure keyStructure, ref ValueStructure valueStructure, CursorOperation op)
{
key = value = null;
var result = checkRead(LmdbMethods.mdb_cursor_get(cursor, ref keyStructure, ref valueStructure, op));
if (result == 0)
{
key = keyStructure.GetBytes();
value = valueStructure.GetBytes();
}
return(result);
}
public static int mdb_cursor_get(IntPtr cursor, byte[] key, out ValueStructure keyStructure, out ValueStructure valueStructure, CursorOperation op)
{
valueStructure = default(ValueStructure);
using (var marshal = new MarshalValueStructure(key))
{
keyStructure = marshal.Key;
return(checkRead(LmdbMethods.mdb_cursor_get(cursor, ref keyStructure, ref valueStructure, op)));
}
}
public static extern MDBResultCode mdb_cursor_get(IntPtr cursor, ref MDBValue key, ref MDBValue data, CursorOperation op);
public static int mdb_cursor_get(IntPtr cursor, out ValueStructure key, out ValueStructure value, CursorOperation op)
{
key = value = default(ValueStructure);
return(checkRead(LmdbMethods.mdb_cursor_get(cursor, ref key, ref value, op)));
}
public static int mdb_cursor_get(IntPtr cursor, byte[] key, out ValueStructure keyStructure, out ValueStructure valueStructure, CursorOperation op)
{
valueStructure = default(ValueStructure);
using (var marshal = new MarshalValueStructure(key))
{
keyStructure = marshal.Key;
return checkRead(LmdbMethods.mdb_cursor_get(cursor, ref keyStructure, ref valueStructure, op));
}
}
private (MDBResultCode resultCode, MDBValue key, MDBValue value) Get(CursorOperation operation, byte[] key, byte[] value)
{
return(Get(operation, key.AsSpan(), value.AsSpan()));
}
private bool Get(CursorOperation operation, byte[] key)
{
_currentValueStructure = default(ValueStructure);
return(mdb_cursor_get(_handle, key, out _currentKeyStructure, out _currentValueStructure, operation) == 0);
}
private bool GetMultiple(CursorOperation operation)
{
return(Lmdb.mdb_cursor_get_multiple(_handle, ref _currentKeyStructure, ref _currentValueStructure, operation) == 0);
}
public static int mdb_cursor_get_multiple(IntPtr cursor, ref ValueStructure key, ref ValueStructure value, CursorOperation op)
{
return checkRead(LmdbMethods.mdb_cursor_get(cursor, ref key, ref value, op));
}
