eclipselink

问题 I'm setting up a GWT application based on GWT/RequestFactory on client side, and JPA/EclipseLink over WebLogic on server side. However, during development, everytime I change something on the server-side code (it can be an entity, the DAO, or even a comment in a Java file!), I get a ClassCastException between 2 apparently similar classes when I try to use my application, and the only way to get rid of it is to restart my WebLogic server. Even redeploying the application doesn't help. Feb 10,

问题 I am a bit confused about managing relationship in JPA. basically I have two entities with a One to Many relationship A configuration can have have a one or many email list associated with it. @Entity public class Config { @OneToMany(mappedBy="owner",cascade=CascadeType.ALL, fetch=FetchType.EAGER) private List<Email> emailReceivers; } @Entity public class Email { @ManyToOne private Config owner; } In an EJB and during update/merge operation wherein I would edit the list of emails associated

问题 I have a minimal web app that you can download here (6Kb): http://www.mediafire.com/?6vo1tc141t65r1g the relevant config is : -eclipselink 2.3.2 -server is tomee 1.0 (but glassfish 3.1 is the same) When I hit the page and press F5 to refresh repeatedly : http://localhost:8080/testCache/jsf/test.xhtml I see several lines like that in the console [EL Fine]: 2012-08-29 19:01:30.821--ServerSession(32981564)--Connection(27242067)--Thread(Thread[http-bio-8080-exec-12,5,main])--SELECT id, tasktype

问题 I am using the EclipseLink implementation (2.3) of JAXB to map POJOs to XML and encountering a problem with following usecase: public abstract class A { public abstract Set<X> getX(); // There is no setter } public class B extends A { // Set via constructor private Set<X> x; @Override public Set<X> getX(); } I am defining the mapping itself completely in an external bindings-file, i set class A to be transient like so: <java-type name="foo.A" xml-transient="true"/> and for class B: <java-type

问题 I'm relativly new to the world of EclipseLink, I've been reading through the documentation, however I'm having a real problem trying to represent the following table. PTY_NO | REF_OBG 6544 45663 6544 1234 6544 97543 6544 1123 6544 77897 Ideally I'd like to represent the above data as follows. @Entity @Table(name="FCS_ISSR_OBG") public class fcs_issr_obg implements Serializable { @Id @Column(name="PTY_NO") private long pty_no; @Column(name="REF_OBG") private List<long> ref_obg; ... As once I

问题 I have a below mapping @Entity @Table(name = "auctions") public class Auction{ . . @OneToMany(cascade = CascadeType.ALL, mappedBy = "auction") private List<AuctionParamValue> auctionParamValueList; . . } @Entity @Table(name = "auction_param_values") public class AuctionParamValue { @EmbeddedId protected AuctionParamValuePK auctionParamValuePK; @JoinColumn(name = "auction_param_id", referencedColumnName = "auction_param_id",updatable=false,insertable=false) @ManyToOne @MapsId("auctionParamId")

问题 I am using eclipse link(v2.5.0) Dynamic JAXB to convert XML to JSON and viceversa using a multiple schemas. emp.xsd <?xml version="1.0" encoding="UTF-8"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:emp="Employee:2:0" targetNamespace="Employee:2:0" elementFormDefault="unqualified" attributeFormDefault="unqualified" version="2.0"> <xsd:element name="searchManager" type="emp:SearchManager" /> <xsd:complexType name="SearchManager"> <xsd:sequence> <xsd:element name="CompanyName

问题 I doing a Proof Of Concept to figure out how efficient to call a store procedure using EclipseLink. I was able to call oracle store procedure using EclispeLink with Scalar/primitive data types (link Integer, varchar etc). I wanted to understand how can I handle Oracle Store procedure from EclipseLink with collection(Oracle Types/User defined types) as input or output parameters. I would really appreciate if some one help me understand this with an example. Thanks MAK Here is the example which

问题 I'm trying to setup Eclipselink on TomEE but i ran into the problem that i get an error about missing the persistence.xml. But the persistence.xml is present at ProjectPath/META-INF/persistence.xml. I'm running a Maven project on IntelliJ with Jersey and Eclipselink. This is my persistence.xml: <persistence-unit name="DietMakerPostgres"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <class>database.DietEntity</class> <class>database.DietSavedEntity</class> <class

问题 I am trying to run the following code: public BigDecimal valuate(String searchTerms, String categoryPath) { Query query = em.createNativeQuery("SELECT SUM(maxBidAmount) / COUNT(maxBidAmount) FROM Item WHERE MATCH(title) AGAINST(':searchTerms') AND categoryPath=':categoryPath'", Double.class); query.setParameter("searchTerms", searchTerms); query.setParameter("categoryPath", categoryPath); double value = (double) query.getSingleResult(); return new BigDecimal(value); } When I do so, I get the