graphdb/src/main/java/com/tinkerpop/blueprints/impls/orient/OrientBaseGraph.java
public OrientVertex getVertex(final Object id) {
    makeActive();

    if (null == id)
      throw ExceptionFactory.vertexIdCanNotBeNull();

    if (id instanceof OrientVertex)
      return (OrientVertex) id;
    else if (id instanceof ODocument)
      return getVertexInstance((OIdentifiable) id);

    setCurrentGraphInThreadLocal();

    ORID rid;
    if (id instanceof OIdentifiable)
      rid = ((OIdentifiable) id).getIdentity();
    else {
      try {
        rid = new ORecordId(id.toString());
      } catch (IllegalArgumentException iae) {
        // orientdb throws IllegalArgumentException: Argument 'xxxx' is
        // not a RecordId in form of string. Format must be:
        // <cluster-id>:<cluster-position>
        return null;
      }
    }

    if (!rid.isValid())
      return null;

    final ORecord rec = rid.getRecord();
    if (rec == null || !(rec instanceof ODocument))
      return null;

    final OClass cls = ((ODocument) rec).getSchemaClass();
    if (cls != null && cls.isEdgeType())
      throw new IllegalArgumentException("Cannot retrieve a vertex with the RID " + rid + " because it is an edge");

    return getVertexInstance(rec);
  }
public OrientVertex getVertex(final Object id) {
    makeActive();

    if (null == id)
      throw ExceptionFactory.vertexIdCanNotBeNull();

    if (id instanceof OrientVertex)
      return (OrientVertex) id;
    else if (id instanceof ODocument)
      return getVertexInstance((OIdentifiable) id);

    setCurrentGraphInThreadLocal();

    ORID rid;
    if (id instanceof OIdentifiable)
      rid = ((OIdentifiable) id).getIdentity();
    else {
      try {
        rid = new ORecordId(id.toString());
      } catch (IllegalArgumentException iae) {
        // orientdb throws IllegalArgumentException: Argument 'xxxx' is
        // not a RecordId in form of string. Format must be:
        // <cluster-id>:<cluster-position>
        return null;
      }
    }

    if (!rid.isValid())
      return null;

    final ORecord rec = rid.getRecord();
    if (rec == null || !(rec instanceof ODocument))
      return null;

    final OClass cls = ((ODocument) rec).getSchemaClass();
    if (cls != null && cls.isEdgeType())
      throw new IllegalArgumentException("Cannot retrieve a vertex with the RID " + rid + " because it is an edge");

    return getVertexInstance(rec);
  }
Returns a vertex by an ID.

@param id Can by a String, ODocument or an OIdentifiable object.