package com.googlecode.mjorm;
import com.googlecode.mjorm.convert.ConversionContext;
import com.googlecode.mjorm.convert.ConversionException;
import com.googlecode.mjorm.convert.JavaType;
import com.googlecode.mjorm.convert.TypeConverter;
import com.googlecode.mjorm.convert.converters.ArrayToMongoTypeConverter;
import com.googlecode.mjorm.convert.converters.CollectionToMongoTypeConverter;
import com.googlecode.mjorm.convert.converters.BooleanTypeConverter;
import com.googlecode.mjorm.convert.converters.CharacterTypeConverter;
import com.googlecode.mjorm.convert.converters.EnumToMongoTypeConverter;
import com.googlecode.mjorm.convert.converters.MapToMongoTypeConverter;
import com.googlecode.mjorm.convert.converters.MongoToArrayTypeConverter;
import com.googlecode.mjorm.convert.converters.MongoToCollectionTypeConverter;
import com.googlecode.mjorm.convert.converters.MongoToEnumTypeConverter;
import com.googlecode.mjorm.convert.converters.MongoToMapTypeConverter;
import com.googlecode.mjorm.convert.converters.NumberTypeConverter;
import com.googlecode.mjorm.convert.converters.ObjectIdToStringTypeConverter;
import com.googlecode.mjorm.convert.converters.StringToObjectIdTypeConverter;
import com.googlecode.mjorm.convert.converters.StringToUUIDConverter;
import com.googlecode.mjorm.convert.converters.StringTypeConverter;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
/**
* Abstract {@link ObjectMapper} that handles most of the work of
* object conversion for the subclass.
*/
public abstract class AbstractObjectMapper
implements ObjectMapper {
private ConversionContext conversionContext = new ConversionContext();
/**
* Creates the mapper.
*/
public AbstractObjectMapper() {
registerTypeConverter(new StringTypeConverter());
registerTypeConverter(new NumberTypeConverter());
registerTypeConverter(new CharacterTypeConverter());
registerTypeConverter(new BooleanTypeConverter());
registerTypeConverter(new ObjectIdToStringTypeConverter());
registerTypeConverter(new StringToObjectIdTypeConverter());
registerTypeConverter(new StringToUUIDConverter());
registerTypeConverter(new ArrayToMongoTypeConverter());
registerTypeConverter(new CollectionToMongoTypeConverter());
registerTypeConverter(new EnumToMongoTypeConverter());
registerTypeConverter(new MapToMongoTypeConverter());
registerTypeConverter(new MongoToArrayTypeConverter());
registerTypeConverter(new MongoToCollectionTypeConverter());
registerTypeConverter(new MongoToMapTypeConverter());
registerTypeConverter(new MongoToEnumTypeConverter());
}
/**
* {@inheritDoc}
*/
public <T> T map(DBObject dbObject, Class<T> objectClass) {
try {
return conversionContext.convert(dbObject, JavaType.fromType(objectClass));
} catch(ConversionException ce) {
throw new MjormException(ce);
}
}
/**
* {@inheritDoc}
*/
public <T> DBObject unmap(T object) {
try {
return conversionContext.convert(object, JavaType.fromType(BasicDBObject.class));
} catch(ConversionException ce) {
throw new MjormException(ce);
}
}
/**
* {@inheritDoc}
*/
public <T> Object unmapValue(T object) throws MjormException {
try {
if (object==null) {
return null;
}
JavaType storageType = conversionContext.getStorageType(object.getClass());
return conversionContext.convert(object, storageType);
} catch(ConversionException ce) {
throw new MjormException(ce);
}
}
/**
* Registers the given {@link TypeConverter}.
* @param typeConverter the {@link TypeConverter}
*/
public void registerTypeConverter(TypeConverter<?, ?> typeConverter) {
conversionContext.registerTypeConverter(typeConverter);
}
}