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Java Object Document Mapper for MongoDB
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package org.mongodb.morphia.converters;
import org.mongodb.morphia.mapping.MappedField;
import org.mongodb.morphia.mapping.MappingException;
/**
* @author Uwe Schaefer, ([email protected])
* @author scotthernandez
*/
public class ClassConverter extends TypeConverter implements SimpleValueConverter {
/**
* Creates the Converter.
*/
public ClassConverter() {
super(Class.class);
}
@Override
public Object decode(final Class targetClass, final Object fromDBObject, final MappedField optionalExtraInfo) {
if (fromDBObject == null) {
return null;
}
final String l = fromDBObject.toString();
try {
return Class.forName(l);
} catch (ClassNotFoundException e) {
throw new MappingException("Cannot create class from Name '" + l + "'", e);
}
}
@Override
public Object encode(final Object value, final MappedField optionalExtraInfo) {
if (value == null) {
return null;
} else {
return ((Class) value).getName();
}
}
}