bidirectional

问题 I have 2 Entities: public class Restaurant { @OneToMany(fetch = FetchType.LAZY, mappedBy = "restaurant") private Set<Vote> votes; } and public class Vote { @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "restaurant_id", nullable = false) private Restaurant restaurant; } if I try to get both of them like that @Query("SELECT r FROM Restaurant r JOIN FETCH r.vote ") I get Infinite Recursion with Jackson JSON. So I managed to find a way to handle that: public class Restaurant {

问题 I want to drive a birectionnal logic signal through the FPGA. PGD_ICD <--> PGD_TARGET for those who have recognized the Microchip ICD3 you know that PGD line is bidirectional. I've read that we can't do something like that but have you any idea ? many thanks 回答1: Passing a bidirectional bus through an FPGA without knowing the bus protocol won't work. While FPGA I/O pins do support tristate logic signals (floating output state), you will need to know when to drive a value onto the output, and

问题 I need a kind of map which is accessible in two directions, so with a key-key structure instead of key-value. Does this exist in Java? If not, what is the best way to create it? So example: mySpecialHashMap.put("key1", "key2"); mySpecialMap.getL2R("key1") returns "key2"; mySpecialMap.getR2L("key2") returns "key1"; 回答1: So you want a bidirectional map. You can use Apache Commons Collections BidiMap or Google Collections BiMap for this. 回答2: You might want to look at BiMap from the Guava

问题 I have recently discovered the TextMesh Pro in unity and it is amazing but I have 1 issue. When I write rtl (right to left) text with English text (ltr) the English word gets flip with all the text. What should I do? Is there a setting that I need to change? Thanks in advance Example: as שלום would be: sa שלום 回答1: You need this character: ‮ (There's a character there, trust me) ‮don't trust me? ;) ‭ Try highlighting this line. It's called the right to left mark. XKCD had a strip about it:

问题 In HTML, the <bdo> tag is used to override the current text direction. When i have a <div> tag, should i use <bdo> tag inside it? <div><bdo dir="rtl">TEXT</bdo></div> Or instead i should use a CSS class for the <div> tag: <div class="rtl-lang">TEXT</div> My question is: When should i use <bdo> tag? Will it be deprecated? 回答1: You should normally not use the bdo element, or its CSS counterpart, since they are meant to be used in exceptional situations, where you need to override the normal

问题 To illustrate the problem we use a simple case: there are two aggregates - Lamp and Socket . The following business rule always must be enforced: Neither a Lamp nor a Socket can be connected more than once at the same time. To provide an appropriate command we conceive a Connector -service with the Connect(Lamp, Socket) -method to plug them. Because we want to comply to the rule that one transaction should involve only one aggregate, it's not advisable to set the association on both

问题 This is an issue I already asked about and several got answers but the problem remained. when I try to write in hebrew to an image using Image module I get instead of the hebrew lettring some other (ascii??) lettering. if I convert to unicode or ascii I get an error that it doesn't support. I got here a reference to a code that does what I want in chinese: import sys import Imag import ImageDraw import ImageFont import _imaging txt = '你好,世界!' font = ImageFont.truetype('c:/test/simsun.ttc',24)

问题 I am trying to implement equals method for Java classes Book and Chapter in my application. Book has a set of Chapter s, while a Chapter has an associated Book . The bidirectional association is shown as below: class Book{ private String isbn; private String name; private Date publishDate; private Set<Chapter> chapters; ... public boolean equals(Object o){ if(o == this){ return true; } if (!(o instanceof Book)){ return false; } Book book = (Book)o; if( (this.isbn.equals(book.getIsbn()) ) &&

问题 I am trying to implement equals method for Java classes Book and Chapter in my application. Book has a set of Chapter s, while a Chapter has an associated Book . The bidirectional association is shown as below: class Book{ private String isbn; private String name; private Date publishDate; private Set<Chapter> chapters; ... public boolean equals(Object o){ if(o == this){ return true; } if (!(o instanceof Book)){ return false; } Book book = (Book)o; if( (this.isbn.equals(book.getIsbn()) ) &&

问题 I'm looking for an algorithm which can take two sets of integers (both positive and negative) and find subsets within each that have the same sum. The problem is similar to the subset sum problem except that I'm looking for subsets on both sides. Here's an example: List A {4, 5, 9, 10, 1} List B {21, 7, -4, 180} So the only match here is: {10, 1, 4, 9} <=> {21, 7, -4} Does anyone know if there are existing algorithms for this kinda problems? So far, the only solution I have is a brute force