datanucleus

来源： https://stackoverflow.com/questions/62414127/apache-spark-project-with-single-executable-jar-with-datanucleus

来源： https://stackoverflow.com/questions/62414127/apache-spark-project-with-single-executable-jar-with-datanucleus

问题 does anyone know how to use bitwise AND (&) as criteria for a JPA NamedQuery without having to use a @NamedNativeQuery? I'm storing status bits in a field. I'm using the following defs for an entity of a view: @NamedQueries({ @NamedQuery(name="ViewProductsList.findAll", query="SELECT v FROM ViewProductsList v"), @NamedQuery(name="ViewProductsList.findFeatured", query="SELECT v FROM ViewProductsList v WHERE v.statusId & 16"), @NamedQuery(name="ViewProductsList.findBySubcategory", query="SELECT

问题 does anyone know how to use bitwise AND (&) as criteria for a JPA NamedQuery without having to use a @NamedNativeQuery? I'm storing status bits in a field. I'm using the following defs for an entity of a view: @NamedQueries({ @NamedQuery(name="ViewProductsList.findAll", query="SELECT v FROM ViewProductsList v"), @NamedQuery(name="ViewProductsList.findFeatured", query="SELECT v FROM ViewProductsList v WHERE v.statusId & 16"), @NamedQuery(name="ViewProductsList.findBySubcategory", query="SELECT

问题 I am trying to build my first Google App Engine WAR and am setting up my own external (outside of Eclipse) Ant build to be executed from the terminal. I'm trying to get the <enhance_war/> Ant macro working and am running into a bizarre NoSuchMethodError . Here's my Ant target: <target name="package" depends="gendocs"> <echo message="Enhancing WAR JDO classes." /> <enhance_war war="war" /> <echo message="Packaging the WAR file." /> <war destfile="gen/dist/myapp.war" webxml="war/web.xml">

问题 I am trying to build my first Google App Engine WAR and am setting up my own external (outside of Eclipse) Ant build to be executed from the terminal. I'm trying to get the <enhance_war/> Ant macro working and am running into a bizarre NoSuchMethodError . Here's my Ant target: <target name="package" depends="gendocs"> <echo message="Enhancing WAR JDO classes." /> <enhance_war war="war" /> <echo message="Packaging the WAR file." /> <war destfile="gen/dist/myapp.war" webxml="war/web.xml">

问题 I have very simple PersistenceCapable class: import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.PersistenceCapable; import javax.jdo.annotations.Persistent; import javax.jdo.annotations.PrimaryKey; @PersistenceCapable public class TheEntity { @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Long id; public Long getId() { return id; } @Persistent private int version; public int getVersion() { return version; } public void setVersion(int

问题 Google just came out with JDO 3.0 (which uses DataNucleus 2.0) for Google App Engine, and I want to use it, since it conveniently supports unowned relationships. I've been trying for days, but I can't figure out how to use it with the Google Eclipse plugin. I've found this web page https://developers.google.com/appengine/docs/java/datastore/jdo/overview-dn2, but my project folder doesn't have a build.xml file. I tried creating a separate project and transferring all my code, but the new

问题 Google just came out with JDO 3.0 (which uses DataNucleus 2.0) for Google App Engine, and I want to use it, since it conveniently supports unowned relationships. I've been trying for days, but I can't figure out how to use it with the Google Eclipse plugin. I've found this web page https://developers.google.com/appengine/docs/java/datastore/jdo/overview-dn2, but my project folder doesn't have a build.xml file. I tried creating a separate project and transferring all my code, but the new

问题 I am trying to create a Google App Engine - GAE with JPA 2.0, I have followed all I need to, putting the correct jars in classpath and making sure my Entities are enhanced. But I am having problems creating my EntityManager. My persistence.xml looks like this: <?xml version="1.0" encoding="UTF-8" ?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml