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POObject sent from client to web-service using WSDL is null on the web-service, but not in the client, why?
 

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  1. POObject sent from client to web-service using WSDL is null on the web-service, but not in the client, why?
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    <p>I have a web service running EclipseLink. I have generated some Java classes with NetBeans that are based on the database schema ("Entity classes from database...").</p> <p>My problem is about two classes called Person.java and Group.java that have been generated by NetBeans based on the database schema. Person.java and Group.java is part of the JAR file "MyLib.jar"</p> <p>In Group.java, I have this code (among other code):</p> <pre><code>@Column(name = "groupName") private String groupName; @OneToMany(cascade = CascadeType.ALL, mappedBy = "group") private Collection&lt;Person&gt; personCollection; public String setGroupName(String groupName) { this.groupName = groupName; } public String getGroupName(){ return groupName; } @XmlTransient public Collection&lt;Person&gt; getPersonCollection() { return personCollection; } public void setPersonCollection(Collection&lt;Person&gt; personCollection) { this.personCollection = personCollection; } </code></pre> <p>I have two different applications that include the "MyLib.jar". One is the web-service itself and the other is a client that connects to the web-service. The client also, of course, includes the web service interface JAR.</p> <p>In the client I create a collection of Persons like this and then send the group instance to the web-service:</p> <pre><code>Collection&lt;Person&gt; persons = new ArrayList&lt;Person&gt;(); Person person = new Person(); person.setName("Peter"); persons.add(person); group.setName("GroupName"); group.setPersonCollection(persons); System.out.print(persons); // prints the instance and its content webserviceInstance.setGroup(group); </code></pre> <p>The really strange thing is that in the web-service method <code>setGroup</code>, the collection is null! </p> <pre><code>@Override public void setGroup(Group group) { System.out.print(group.getGroupName()); // prints "GroupName" System.out.print(group.getPersonCollection()); // prints null meaning the instance is null ... } </code></pre> <p>I simply cannot understand why the collection is null in the web service but not in the client. Am I doing anything wrong?</p>
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    1. USRox
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      1. VTUpMod
    1. CO"Am I doing anything wrong?" - Yes, your collection is null.
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      1. USduffymo
    2. CO@duffymo: And my question still is: Why is it null?
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      1. USRox
    3. CO@Rox It is very weird that `groupName` gets transferred and `personCollection` not. For the first step, I would recommend traffic capture (with Wireshark or similar tool). Examine carefully your request and see whether collection is sent to the Web service.
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      1. USMiljen Mikic
 

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