querydsl

问题 I'm having a Spring Data repository class like: @RepositoryDefinition(domainClass = Book.class, idClass = Long.class) public interface BookRepository { List<Book> findAll(); List<Book> findByOrderByPublishDateDesc(); Book findOne(Long id); Book save(Book book); boolean exists(Long id); void delete(Long id); Iterable<Book> findAll(Predicate predicate, OrderSpecifier<?>... orders); } The standard crud methods do work, however the findAll (from JpaSpecificationExecutor) doesn't work. Do

问题 I am working to build a ES query that satisfies the condition >= avg . Here is an example: GET /_search { "size" : 0, "query" : { "filtered": { "filter": { "range": { "price": { "gte": { "aggs" : { "single_avg_price": { "avg" :{ "field" : "price" } } } } } } } } } } I get the following error "type": "query_parsing_exception", "reason": "[range] query does not support [aggs]", I wonder how do we use aggregated value with range query in Elastic query 回答1: You cannot embed aggregations inside a

问题 I am trying to create nodes of a specific type with properties which can be dynamic . For Example : I can create a Person node with name,age,address properties. But these need not be the only properties when I create another Person node. This node can have name,age,address and an additional property salary. Using spring data or query DSL needs me to create Java POJO class Person with fixed number of instance variables name,age and address . @NodeEntity public class Person { @GraphId private

问题 Here is my scenario: i have person entity which looks like below. @Entity public class Person{ @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Set<PhoneNumber> phoneNumbers = new HashSet<>(0); @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "AGENCY_ID") private Agency agency; I am unable to retrieve correct data,when i query for persons. Problems i have : 1. duplicate records. 2. person with no agency not returning . 3. Bad performance Here is what i tried, and see

问题 I guess I haven't configured the repositories properly, but there are other problems too with the following build.gradle: buildscript { repositories { mavenCentral() maven { url "http://repo.spring.io/libs-snapshot" } jcenter() } dependencies { classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.0.RELEASE") classpath "gradle.plugin.com.ewerk.gradle.plugins:querydsl-plugin:1.0.7" } } apply plugin: 'java' apply plugin: 'eclipse' apply plugin: 'idea' apply plugin: 'spring-boot'

问题 I am trying to implement Search filter functionality and load grid in spring boot data JPA application. For creating dynamic query I am using Querydsl . I am searching data according to sFloor and nBuildId. If I am passing sFloor, nBuildId only that matching record should display in grid If I am not passing any values then grid should load with all values. I tried like below In that when I am passing data I am able to filter data. But when I am not passing any records I am getting null

问题 Here is my code: QueryFactory.selectFrom(table1) .leftJoin(table2).on(table1.id.eq(table2.id)).fetch(); When I execute the below code in querydsl I get the following error: 08:08:54.866 ERROR o.h.h.i.a.ErrorCounter - Path expected for join! 08:08:54.870 ERROR o.h.h.i.a.ErrorCounter - Path expected for join! antlr.SemanticException: Path expected for join! at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:369) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final]

问题 A method is dynamically building a list of Predicate s that is later passed to a database service object. In order to create table joins based on the predicate list I need to determine the underlying generated class Q* of each predicate. Calling getType() or getClass() on the Predicate doesn't help. This is how I build the predicates: Class<?> tableClazz = Class.forName("foo.bar.database.model.Q"+ WordUtils.capitalize(tableName)); Object tableObj = tableClazz.getConstructor(String.class)

问题 I am unable to generate Q classes from my @RooJpaEntity annotated classes. Here is my plugin configuration: <plugin> <groupId>com.mysema.maven</groupId> <artifactId>apt-maven-plugin</artifactId> <version>1.0.8</version> <executions> <execution> <phase>generate-sources</phase> <goals> <goal>process</goal> </goals> <configuration> <outputDirectory>src/main/java</outputDirectory> <processor>com.mysema.query.apt.roo.RooAnnotationProcessor</processor> <options> <querydsl.packageSuffix>.querydsl<

问题 I have a set of classes that implements the same interface. For example: public interface Employee{ private String name; public void work(); public String getName(); } @PersistenceCapable(detachable = "true") public class Accountant implements Employee{ } @PersistenceCapable(detachable = "true") public class Secretary implements Employee{ } And another class that holds the Employee implementations: public class Department{ private ArrayList<Employee> employees; public ArrayList<Employee>