Hi,
I've started using Castor and while the docs are pretty good,
they're a bit short on complex mapping examples. I can't seem to find
anywhere elsewhere, though I'm still digging through the list archive
for castor-users (sadly, searching the list archive for "complex
mapping" didn't turn up much).
I'm using Castor for java-to-XML mapping where I have an
existing, mostly-defined XML and Java classes to deal with. Here's an
example of the sort of mapping I'm having problems with right now:
-----Order Example with <Items></Items> tags
<Order>
<CustomerWrapper>
<WrapperDetail>uselessValue</WrapperDetail>
<Customer>
<Recipient>Bob</Recipient>
<Address>123 Public Street</Address>
<ZipCode>11111111</ZipCode>
</Customer>
</CustomerWrapper>
<Items>
<Item>
<Sku>value</Sku>
<Description>value</Description>
<Manufacturer>value</Manufacturer>
</Item>
<Item>
<Sku>value</Sku>
<Description>value</Description>
<Manufacturer>value</Manufacturer>
</Item>
<Item>
<Sku>value</Sku>
<Description>value</Description>
<Manufacturer>value</Manufacturer>
</Item>
<!-- ...repeat Item tags ad nauseam... -->
</Items>
</Order>
-----
The problems I'm having are with the
<CustomerWrapper></CustomerWrapper> surrounding the <Customer>, the
<WrapperDetail>, neither of which map to a java class (I'd like to
just ignore them) and the <Items></Items> surrounding the multiple
<Item> elements. When I drop those out of the data, everything works
fine with the following mapping files.
According to the docs, I should be able ignore <CustomerWrapper> by
specifying the fields like:
<field name="recipient" type="String" location="CustomerWrapper"
node="text">
<bind-xml name="Recipient"/>
</field>
But when I do so and add the <CustomerWrapper> back in, I get:
Unable to find FieldDescriptor for 'CustomerWrapper' in ClassDescriptor of
sol-and-offers{file: [not available]; line: 2; column: 29}
Similarly, when I add the <Items></Items> back in (without the other
changes, I get:
"unable to find FieldDescriptor for 'Items' in ClassDescriptor of
Order{file: [not available]; line: 51; column: 10}"
-----Customer Mapping
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd";>
<mapping>
<class name="com.foo.Customer">
<map-to xml="Customer"/>
<field name="recipient" type="String" node="text">
<bind-xml name="Recipient"/>
</field>
<field name="address" type="String" node="text">
<bind-xml name="Address"/>
</field>
<field name="zipCode" type="String" node="text">
<bind-xml name="ZipCode"/>
</field>
</class>
</mapping>
-----
-----Item Mapping
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd";>
<mapping>
<class name="com.foo.Item">
<field name="sku" type="String" node="text">
<bind-xml name="Sku"/>
</field>
<field name="description" type="String" node="text">
<bind-xml name="Description"/>
</field>
<field name="manufacturer" type="String" node="text">
<bind-xml name="Manufacturer"/>
</field>
</class>
</mapping>
-----
-----Order Mapping
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd";>
<mapping>
<include href="CustomerMapping.xml"/>
<include href="ItemMapping.xml"/>
<class name="com.foo.Order">
<field name="customer" type="com.foo.Customer">
<xml bind-to="Customer"/>
</field>
<field name="Items" type="com.foo.Item" collection="arraylist"/>
</class>
</mapping>
-----
Steven J. Owens
[EMAIL PROTECTED]
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