DBPointer class
class DBPointer extends BsonObject{ String collection; ObjectId id; BsonString bsonCollection; DBPointer(this.collection, this.id) { bsonCollection = new BsonString(collection); } get value=>this; int get typeByte => _BSON_DATA_DBPOINTER; byteLength()=>bsonCollection.byteLength()+id.byteLength(); unpackValue(BsonBinary buffer){ bsonCollection = new BsonString(null); bsonCollection.unpackValue(buffer); collection = bsonCollection.data; id = new ObjectId(); id.unpackValue(buffer); } toString()=>"DBPointer('$collection', $id)"; toJson()=>toString(); packValue(BsonBinary buffer){ bsonCollection.packValue(buffer); id.packValue(buffer); } get hashCode => '${collection}.${id.toHexString()}'.hashCode; bool operator ==(other) => other is DBPointer && collection == other.collection && id.toHexString() == other.id.toHexString(); }
Extends
BsonObject > DBPointer
Properties
BsonString bsonCollection #
BsonString bsonCollection
final hashCode #
Get a hash code for this object.
All objects have hash codes. Hash codes are guaranteed to be the
same for objects that are equal when compared using the equality
operator ==
. Other than that there are no guarantees about
the hash codes. They will not be consistent between runs and
there are no distribution guarantees.
If a subclass overrides hashCode it should override the equality operator as well to maintain consistency.
get hashCode => '${collection}.${id.toHexString()}'.hashCode;
final value #
get value=>this;
Operators
bool operator ==(other) #
The equality operator.
The default behavior for all Objects is to return true if and
only if this
and
other are the same object.
Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:
-
Total: It must return a boolean for all arguments. It should never throw or return
null
. -
Reflexive: For all objects
o
,o == o
must be true. -
Symmetric: For all objects
o1
ando2
,o1 == o2
ando2 == o1
must either both be true, or both be false. -
Transitive: For all objects
o1
,o2
, ando3
, ifo1 == o2
ando2 == o3
are true, theno1 == o3
must be true.
The method should also be consistent over time, so equality of two objects should not change over time, or at least only change if one of the objects was modified.
If a subclass overrides the equality operator it should override the hashCode method as well to maintain consistency.
bool operator ==(other) => other is DBPointer && collection == other.collection && id.toHexString() == other.id.toHexString();
Methods
dynamic byteLength() #
byteLength()=>bsonCollection.byteLength()+id.byteLength();
dynamic packElement(String name, buffer) #
packElement(String name, var buffer){ buffer.writeByte(typeByte); if (name != null){ new BsonCString(name).packValue(buffer); } packValue(buffer); }
dynamic packValue(BsonBinary buffer) #
packValue(BsonBinary buffer){ bsonCollection.packValue(buffer); id.packValue(buffer); }
dynamic toJson() #
toJson()=>toString();
dynamic toString() #
Returns a string representation of this object.
toString()=>"DBPointer('$collection', $id)";
_ElementPair unpackElement(buffer) #
_ElementPair unpackElement(buffer){ _ElementPair result = new _ElementPair(); result.name = buffer.readCString(); unpackValue(buffer); result.value = value; return result; }
dynamic unpackValue(BsonBinary buffer) #
unpackValue(BsonBinary buffer){ bsonCollection = new BsonString(null); bsonCollection.unpackValue(buffer); collection = bsonCollection.data; id = new ObjectId(); id.unpackValue(buffer); }