Support for enum types about modelmapper HOT 6 CLOSED

or maybe just good description in documentation.

from modelmapper.

Enums are mappable so long as the source and destination enum names are the same. Is there an example you can share that is giving you trouble?

from modelmapper.

First of all, thanks for fast replay ;)

Code:

public class TreeNodeMap extends PropertyMap<AttributeStructureNode, TreeNode> {

@Override
protected void configure() {
    final ValueType type;

    switch (source.getAttributeKind()) {
    case TEXT_TYPE:
        type = ValueType.STRING;
        break;
    case FLOAT_TYPE:
        type = ValueType.DECIMAL;
        break;
    case INTEGER_TYPE:
        type = ValueType.INTEGER;
        break;
    case LOGICAL_TYPE:
        type = ValueType.BOOLEAN;
        break;
    case DATE_TYPE:
        type = ValueType.DATE;
        break;
    default:
        type = null;
        break;
    }

    map().setAttributeKind(type);
}

}

When I'm calling source.getAttributeKind() it throws me exception:

ModelMapper configuration errors:

1. An error occured while building mappings

1 error

RequestURI=/sdlconsole/MainInterface

Caused by:

org.modelmapper.ConfigurationException: ModelMapper configuration errors:

An error occured while building mappings

1 error

at org.modelmapper.internal.Errors.throwConfigurationExceptionIfErrorsExist(Errors.java:224)

at org.modelmapper.internal.MappingBuilderImpl.build(MappingBuilderImpl.java:138)

at org.modelmapper.internal.TypeMapImpl.addMappings(TypeMapImpl.java:66)

at org.modelmapper.internal.TypeMapStore.getOrCreate(TypeMapStore.java:93)

at org.modelmapper.ModelMapper.addMappings(ModelMapper.java:90)

at pl.dandelite.empik.sdl.manager.server.service.MainInterfaceServiceImpl.(MainInterfaceServiceImpl.java:77)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at java.lang.Class.newInstance0(Class.java:355)

at java.lang.Class.newInstance(Class.java:308)

at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)

at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)

at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)

at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)

at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)

at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)

at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)

at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.Server.handle(Server.java:324)

at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)

at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)

at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)

at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)

at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)

at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)

at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Caused by: org.modelmapper.internal.ErrorsException

at org.modelmapper.internal.Errors.toException(Errors.java:237)

at org.modelmapper.internal.ProxyFactory.proxyFor(ProxyFactory.java:85)

at org.modelmapper.internal.MappingInterceptor.intercept(MappingInterceptor.java:41)

at pl.dandelite.empik.sdl.core.domain.dataStructure.AttributeStructureNode$$EnhancerByModelMapper$$a6c9de64.getAttributeKind()

at pl.dandelite.empik.sdl.manager.server.modelmapper.TreeNodeMap.configure(TreeNodeMap.java:15)

at org.modelmapper.PropertyMap.configure(PropertyMap.java:270)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.modelmapper.internal.MappingBuilderImpl.build(MappingBuilderImpl.java:123)

... 29 more

from modelmapper.

PropertyMap.source isn't meant to be used for anything other than defining mappings. This is why you're getting an exception when getAttributeKind is called. Mapping actual enum values isn't supported yet by the mapping API, but you can accomplish the same thing by creating a Converter:

    modelMapper.createTypeMap(Source.class, Dest.class).setConverter(new Converter<Source, Dest>() {
      public Dest convert(MappingContext<Source, Dest> context) {
        switch (context.getSource()) {
          case A: return Dest.One;
          case B: return Dest.Two;
          case C: return Dest.Three;
          default: return null;
        }
      }
    });

I actually just pushed a small change to make this possible. I'll be pushing a release today that will include that change. Let me know if this doesn't resolve your use case.

from modelmapper.

ok, thanks for example. This time I used converter, but know I have another exception:

Failed to instantiate instance of destination pl.dandelite.empik.sdl.manager.shared.model.ValueType. Ensure that pl.dandelite.empik.sdl.manager.shared.model.ValueType has a non-private no-argument constructor.

Of course its not possible to create public constructor for enum type ;)

from modelmapper.

Can you post some example mapping code that led to that exception? You may be hitting on a different scenario than I've encountered. This test works fine:

https://github.com/jhalterman/modelmapper/blob/master/core/src/test/java/org/modelmapper/functional/enums/EnumConverter.java

from modelmapper.