querydsl

问题 Context: I used queryDSL in API controller which binds query to the database get. Currently, I have two tables with OneToOne relationship, and we can call them Table A and Table B. If there are 3 rows in A and 2 rows in B, when I get list A with some conditions, and the queryDSL will generate query SQL like A CROSS JOIN B WHERE A.id=B.a_id , but it will miss one item in A. Thus, I am going to implement custom repository to support change join type when generating the SQL statement. The

问题 Quick reference for those looking to configure Spring MVC, Spring Data, and QueryDSL using XML config. 回答1: In pom.xml : <properties> <querydsl.version>3.6.7</querydsl.version> </properties> <dependencies> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.6.1</version> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.9.0.RELEASE</version> </dependency>

问题 Apparently I can't use classes generated with APT in unit tests that use static imports. (Maven sample project can be downloaded here) If the following sample class import com.mysema.query.jpa.impl.JPAQuery; public class UserStore { public void something() { new JPAQuery(null).from(QUser.user).list(QUser.user.login); } } is changed to import static something.QUser.user; import com.mysema.query.jpa.impl.JPAQuery; public class UserStore { public void something() { new JPAQuery(null).from(user)

问题 I want to generate jpa querydsl files from kotlin entity classes. There is a very good examples online of how to generate the dsl files using gradle https://github.com/JetBrains/kotlin-examples/blob/master/gradle/kotlin-querydsl/build.gradle. However I have tried to implement this in maven and have had no luck. My current pom is below. Does anybody know what the issue might be? Thanks in advance. <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM

问题 I have two unrelated tables, each one with field email. I need a query which introduces column taken from second table if emails match or will be null if no match is found. In SQL this is easy: SELECT tableA.id, tableA.email, tableB.name FROM tableA LEFT JOIN tableB ON tableA.email=tableB.email ORDER BY tableB.name Unfortunately JPA doesn't allow joins over unrelated entities so I converted it to: SELECT tableA.id, tableA.email, (SELECT tableB.name FROM tableB WHERE tableB.email=tableA.email)

问题 How to replace the following method that uses the generated Q* class and java reflexion with a PathBuilder? // member vars: T operand; // can be a BigDecimal or a String String tableName; String fieldName; String methodName; public Predicate asPredicate() { Class<?> tableClazz = Class.forName("foo.bar.database.model.Q"+ WordUtils.capitalize(tableName)); Object tableObj = tableClazz.getConstructor(String.class).newInstance(tableName +"1000"); Field colField = tableClazz.getDeclaredField

问题 I am using Gradle version 2.14, I have made changes in build.gradle to exclude packages from JPAAnnotationProcessor as mentioned in question. My build.gradle configuration for same as follows: configurations { querydslapt } dependencies{ compile group: 'com.querydsl', name: 'querydsl-core', version: '4.1.4' compile group: 'com.querydsl', name: 'querydsl-apt', version: '4.1.4' compile group: 'com.querydsl', name: 'querydsl-jpa', version: '4.1.4' } task generateQueryDSL(type: JavaCompile, group

问题 I'm trying to use @Query over QueryDSL 's Overrided method, but when i'm doing that, it is ignoring my predicate which i'm providing e.g. http://localhost:8080/orders?state=Texas The reason i need @Query is to apply security based on authentication principal e.g. @Query("select o from Orders o where ?#{principal.username} = o.username") Complete code of repository: public interface OrderRepository extends JpaRepository<Order, Integer>, QuerydslPredicateExecutor<Order>{ @Override @Query(

问题 I'm trying to use QueryDsl in a new Spring project. I'm new to QueryDsl, and pretty new to maven and Spring, so I may be missing something fairly basic, but I can't get QueryDsl / maven-apt-plugin to generate my Q classes. The Querydsl reference makes sound so easy; I think I did exactly what it said: I configured pom.xml with: <plugin> <groupId>com.mysema.maven</groupId> <artifactId>maven-apt-plugin</artifactId> <version>1.0.3</version> <executions> <execution> <goals> <goal>process</goal> <

问题 I'm using JPA with Hibernate and QueryDSL (v.4.0.5). I have this entity: package com.test.model.entity; @Entity public class Article { @Id private Long id; @ManyToMany(fetch = LAZY, cascade = DETACH) private Set<Tag> tags; } How can I find all the articles matching a given set of Tag s? I think I should start as follows: public BooleanExpression hasTag(Set<Tag> tags){ final QArticle article = QArticle.article; return article.tags.any().eqAny(ce); } where ce should be a CollectionExpression .