Re: [castor-user] Marshalling/Unmarshalling ArrayLists and Lists of Lists

[Emerson, Matt]

Title: Message

Hello,

 

I have fixed the issue with a list embedded within another list.  I will re-post the issue with arrays in another thread.

 

Thanks,

 

Matt

 

-----Original Message-----
From: Emerson, Matt
Sent: Wednesday, March 09, 2005 6:15 PM
To: castor-user@exolab.org
Subject: [WARNING: This message originated from outside of Fidelity] [castor-user] Marshalling/Unmarshalling ArrayLists and Lists of Lists

I have created two classes: Product and SubProduct.  The product is designed to hold a two-dimensional array of SubProducts.  There are two types of storage, a 2-D array and a List of Lists.

Public class Product
{
        private List listList;
        private SubProduct[][] array;

        public Product()

        public void setListList(List data) { this.listList = data; }
        public List setArray(SubProduct[][] data) { this.array = data; }

        public List getListList() { return this.listList; }
        public SubProduct[][] getArray() { return this.array; }
}

Public class SubProduct
{
        private String name;
        private String value;

        public void setName(String data) { this.name = data; }
        publci void sety Value(String data) { this.value = data; }
}

My mapping is as follows:
<mapping>
        <description>Description of the mapping for the Product Class</description>
        <class name="com.fmr.cfit.matt.castor.Product">
                <map-to xml="WrapperProductClass"></map-to>                            
                <field name="array" type="com.fmr.cfit.matt.castor.SubProduct">
                        <bind-xml name="row" location="data_array"/>                   
                </field>               
                <field name="listList" collection="collection" type="com.fmr.cfit.matt.castor.SubProduct">
                        <bind-xml name="current_row" location="listList"/>
                </field>               
        </class>
        <class name="com.fmr.cfit.matt.castor.SubProduct">
                <map-to xml="sub_product"></map-to>
                <field name="name" type="java.lang.String">
                        <bind-xml name="name" node="attribute"/>
                </field>
                <field name="value" type="java.lang.String">
                        <bind-xml name="value" node="element"/>
                </field>
        </class>
</mapping>

When I marshal, a class of type Product, everything works fine.

However, when I try to unmarshall the results back into an object, I get the following error.  I get it for both the array and the list of lists.  Does anyone know why this would be occurring?

#endElement: class
#endElement: mapping
#startElement: WrapperProductClass
#startElement: data_array wrapper-element: data_array
#startElement: row #startElement: sub_product

org.xml.sax.SAXException: unable to find FieldDescriptor for 'sub_product' in ClassDescriptor of sub_product
        void org.exolab.castor.xml.UnmarshalHandler.startElement(java.lang.String, java.lang.String, org.exolab.castor.xml.AttributeSet)                UnmarshalHandler.java:1791

        void org.exolab.castor.xml.UnmarshalHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes) unable to find FieldDescriptor for 'sub_product' in ClassDescriptor of sub_produc                UnmarshalHandler.java:1292

        void org.apache.xerces.parsers.SAXParser.startElement(org.apache.xerces.utils.QName, org.apache.xerces.framework.XMLAttrList, int)              SAXParser.java:1371

        void org.apache.xerces.validators.common.XMLValidator.callStartElement(org.apache.xerces.utils.QName)           XMLValidator.java:840

        boolean org.apache.xerces.framework.XMLDocumentScanner.scanElement(org.apache.xerces.utils.QName)               XMLDocumentScanner.java:1852    boolean org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(boolean)              XMLDocumentScanner.java:1233    boolean org.apache.xerces.framework.XMLDocumentScanner.parseSome(boolean)               XMLDocumentScanner.java:380

        void org.apache.xerces.framework.XMLParser.parse(org.xml.sax.InputSource)               XMLParser.java:908
        java.lang.Object org.exolab.castor.xml.Unmarshaller.unmarshal(org.xml.sax.InputSource)          Unmarshaller.java:605

        java.lang.Object org.exolab.castor.xml.Unmarshaller.unmarshal(java.io.Reader)           Unmarshaller.java:513
        void com.fmr.cfit.matt.castor.TestCastor.runTest2()             TestCastor.java:76
        void com.fmr.cfit.matt.castor.TestCastor.main(java.lang.String[])               TestCastor.java:36

Thanks for the help,

Matt

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