bidirectional

问题 I have 2 apps that I want to make communicate via named pipes on .NET 3.5. Its a request/response paradigm, with the data transmitted as XML to make my life easier. There is a listener app, and an app that posts requests to the pipe. I'm trying to use a bidirectional pipe to do this. The problem i have is that the call to StreamReader.ReadToEnd() doesnt seem to return. What can I do to fix this? Listener code public Class Listener { private void ThreadFunc() { var pipe = new

问题 I have two entities PointOfInterest (referred as POI from here on) and its Address. I want to define a one to one bidirectional mapping with shared primary key between the two, with POI as owner entity. I am using postgreSQL DB, POI table has POIId as PK, generated by a sequence generator defined in DB. Address table has column POIId which is the PK of Address table and also a FK to POI table's POIId column, along with other columns of its own. **PointOfInterest.java** @Entity @Table(name = "

问题 I'm trying to persist a one-to-many owned relationship with bidirectional navigation in GAE using JDO. I manually add the Contact to User class, and I would expect that in the end the Contact will have a reference to the parent User object. If I configure this manually before I persist the parent, I get an exception: org.datanucleus.store.appengine.DatastoreRelationFieldManager.checkForParentSwitch(DatastoreRelationFieldManager.java:204) After the User object persistence the parent reference

问题 I am building a client Ruby library that connects to a server and waits for data, but also allows users to send data by calling a method. The mechanism I use is to have a class that initializes a socket pair, like so: def initialize @pipe_r, @pipe_w = Socket.pair(:UNIX, :STREAM, 0) end The method that I allow developers to call to send data to the server looks like this: def send(data) @pipe_w.write(data) @pipe_w.flush end Then I have a loop in a separate thread, where I select from a socket

问题 I want to train a bi-directional LSTM in tensorflow to perform a sequence classification problem (sentiment classification). Because sequences are of variable lengths, batches are normally padded with vectors of zero. Normally, I use the sequence_length parameter in the uni-directional RNN to avoid training on the padding vectors. How can this be managed with bi-directional LSTM. Does the "sequence_length" parameter work automatically starts from an advanced position in the sequence for the

问题 I'm modifying phpBB's table to have bidirectional relationships for friends. Unfortuntately, people that have already added friends have created duplicate rows: user1 user2 friend 2 3 true 3 2 true 2 4 true So I'd like to remove rows 1 and 2 from the example above. Currently, this is my query built (doesn't work atm): DELETE FROM friends WHERE user1 IN (SELECT user1 FROM (SELECT f1.user1 FROM friends f1, friends f2 WHERE f1.user1=f2.user2 AND f1.user2=f2.user1 GROUP BY f1.user1) AS vtable);

问题 I have a db with movies and awards . The point is what I want is be able to know the movie of an award and the awards of a movie. The problem begins when I try to load a movie or an award. When I load one of them I have an error that says, for example: undefined award-1 or viceversa ( undefined movie-1 ) because the references aren't created yet. My Awards Fixture: namespace MyProject\MovieBundle\DataFixtures\MongoDB; use Doctrine\Common\DataFixtures\AbstractFixture; use Doctrine\Common

问题 I have a system which consists of two applications. Currently, two applications communicate using multiple ZeroMQ PUB/SUB patterns generated for each specific type of transmission. Sockets are programmed in C. For example, App X uses a SUB formal-socket archetype for receiving an information struct from App Y and uses another PUB formal-socket archetype for transmitting raw bit blocks to App Y and same applies to App Y . It uses PUB/SUB patterns for transmission and reception. To be clear App

问题 Why can i remove elements of a bidirectional relation although only one side of the relation is managed in persistence context (Example I)? When i have an unidirectional Relationship that doesn't work (see Example II). Why? Entities: @Entity Class User { ... @OneToMany(mappedBy = "user") private List<Process> processes; @OneToOne // Unidirectional private C c; ... @PreRemove private void preRemove() { for (Process p : processes) { p.internalSetUser(null); } } ... } @Entity Class Process { ...

问题 I have entities User and GrantedRole that have a bidirectional one-to-many relation. When I try to add a GrantedRole to the Set in User, there is no exception thrown, but when I debug the variables for the User and GrantedRole object have a description that reads com.sun.jdi.InvocationException occurred invoking method. The different fields for the variables can be read while debugging, but when I select the roles field in User or the user field in GrantedRole I get the same description as