I´ve been triyng to copy a Map(String,ProposalViewBean) to another Map(String,Proposal)
I created a custom converter:
public class ProposalsDozerConverter extends DozerConverter <HashMap<String,Proposal>, HashMap<String,ProposalViewBean>> {
@Resource(name="mapper")
private Mapper mapper;
public ProposalsDozerConverter(Class<HashMap<String, Proposal>> prototypeA,
Class<HashMap<String, ProposalViewBean>> prototypeB) {
super(prototypeA, prototypeB);
}
@Override
public HashMap<String, Proposal> convertFrom( HashMap<String, ProposalViewBean> proposalsViewBean, HashMap<String, Proposal> proposals) {
System.out.println("convertFrom");
/*if (proposals == null){
proposals = new TreeHashMap<String, Proposal>();
}*/
for (Map.Entry<String, ProposalViewBean> entry : proposalsViewBean.entrySet()){
Proposal p = mapper.map(entry.getValue(), Proposal.class);
proposals.put(entry.getKey(), p);
}
return proposals;
}
@Override
public HashMap<String, ProposalViewBean> convertTo(HashMap<String, Proposal> proposals, HashMap<String, ProposalViewBean> proposalsViewBean) {
System.out.println("convertTo");
/*if (proposalsViewBean == null){
proposalsViewBean = new TreeMap<String, ProposalViewBean>();
}*/
for (Map.Entry<String, Proposal> entry : proposals.entrySet()){
ProposalViewBean p = mapper.map(entry.getValue(), ProposalViewBean.class);
proposalsViewBean.put(entry.getKey(), p);
}
return proposalsViewBean;
}
Then I configured in XML:
<configuration>
<custom-converters>
<converter type="com.hsbc.hbbr.frb.converters.ProposalsDozerConverter">
<class-a>java.util.HashMap</class-a>
<class-b>java.util.HashMap</class-b>
</converter>
</custom-converters>
</configuration>
<mapping>
<class-a>com.hsbc.hbbr.frb.viewbean.ConsumerLoanViewBean</class-a>
<class-b>com.hsbc.hbbr.frb.model.ConsumerLoan</class-b>
<field custom-converter="com.hsbc.hbbr.frb.converters.ProposalsDozerConverter">
<a>proposals</a>
<b>proposals</b>
<a-hint>com.hsbc.hbbr.frb.viewbean.ProposalViewBean</a-hint>
<b-hint>com.hsbc.hbbr.frb.model.Proposal</b-hint>
</field>
</mapping>
When I tried to convert I catch this error:
Caused by: java.lang.InstantiationException: com.hsbc.hbbr.frb.converters.ProposalsDozerConverter
at java.lang.Class.newInstance(Class.java:359)
I have no idea to fix that. Has anyone faced this issue?
I found a solution of my issue. There were some mistakes on my code and XML. First I needed to change the mapping:
My intention was copy Map to another Map not copy the Object inside the Map.
After I checked my Converter, then I realized the spring was not sent an instance of Mapper:
That was the reason of the Exception. To get an instance of Mapper I needed to implement the Interface MapperAware.Implement this Interface Dozer injects an instance of Mapper. I had to change the constructor of class:
Because the raw type will erase in run time. So Dozer does not know what kind of object is inside of Map. My final code is: