[jira] [Resolved] (CXF-5449) FIQL parser having a problem with a JPA entity that contains a list of other entities.

["Sergey Beryozkin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CXF-5449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Beryozkin resolved CXF-5449.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 2.7.9
                   3.0.0-milestone2
         Assignee: Sergey Beryozkin

> FIQL parser having a problem with a JPA entity that contains a list of other entities.
> --------------------------------------------------------------------------------------
>
>                 Key: CXF-5449
>                 URL: https://issues.apache.org/jira/browse/CXF-5449
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 2.7.7
>         Environment: Only tested on Windows 8.
>            Reporter: Yaytay
>            Assignee: Sergey Beryozkin
>             Fix For: 3.0.0-milestone2, 2.7.9
>
>
> I have a JPA entity model that has the following chain of relationships:
> Order_JpaImpl {
>     @OneToMany(mappedBy = "order", fetch = FetchType.EAGER, cascade = {CascadeType.ALL})
>     List< OrderLine_JpaImpl> orderLines = new LinkedList<>();
> }
> OrderLine_JpaImpl {
>     @ManyToOne(fetch = FetchType.EAGER)
>     @JoinColumn(name = "prdId", nullable = false)
>     @ForeignKey
>     @Index
>     private Product_JpaImpl orderLineItem;
> }
> Product_JpaImpl {
>     @ManyToOne( cascade = {}, targetEntity = Show_JpaImpl.class, fetch = FetchType.EAGER )
>     @JoinColumn( name="shwId", nullable = false )
>     @ForeignKey
>     @Index
>     private Show_JpaImpl show;
> }
> Show_JpaImpl {
>     @Column( length = 32, unique = true, nullable = false )
>     private String shortName;
> }
> I want to use FIQL to get all the orders that include orderlines that have products from a given show.
> So I have a simple search expression: show==AMND
> And a mapping:
>     private static Map<String,String> createBeanNameMap() {
>         Map<String,String> map = new HashMap<>();
>         map.put("customerdisplay","customerDisplay");
>         map.put("ordertime","orderTime");
>         map.put("fulfilmentstatus","fulfilmentStatus");
>         map.put("show","orderLines.orderLineItem.show.shortName");
>         return map;
>     }
> That is used by:
>         SearchCondition<ImplType> searchCondition = searchContext.getCondition(targetClass, getBeanNameMap());
> Raises this exception:
> Caused by: java.lang.IllegalArgumentException: argument type mismatch; setter parameter type: java.util.List, set value type: uk.co.spudsoft.spiderweborders.model.jpaimpl.OrderLine_JpaImpl
>     at org.apache.cxf.jaxrs.ext.search.Beanspector.setValue(Beanspector.java:152) ~[cxf-rt-rs-extension-search-2.7.8.jar:2.7.8]
>     at org.apache.cxf.jaxrs.ext.search.Beanspector.setValue(Beanspector.java:131) ~[cxf-rt-rs-extension-search-2.7.8.jar:2.7.8]
>     at org.apache.cxf.jaxrs.ext.search.fiql.FiqlParser$Comparison.createTemplate(FiqlParser.java:600) ~[cxf-rt-rs-extension-search-2.7.8.jar:2.7.8]
> OrderLines is a list of OrderLine objects, but the template is being created with just one and the setter doesn't know how to handle lists.
> I tried adding a setter that takes a single OrderLine, but something got upset when it saw that the getter and setter were of different types.
> I /think/ the failure occurs when you have:
> 1. A parent entity containing a list of children.
> 2. The children entities contain a single grandchild.
> 3. The search is for a property of the grandchild.
> And it fails when it tries to set the grandchild in the child.
> I've actually got another layer in the hierarchy (great-grandchild), but given where the exception comes from I suspect that isn't needed to cause the failure.



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