Since you have an abstract representation of some JSON data (an org.json.JSONObject object) and you’re planning to use the Jackson library – that has its own abstract representation of JSON data (com.fasterxml.jackson.databind.JsonNode) – then a conversion from one representation to the other would save you from the parse-serialize-parse process. So, instead of using the readValue … Read more
As of AutoMapper 8.0 and up The answer below for 5.1.1 still applies, but note that the use of ResolveUsing has been replaced with an overload of MapFrom, but the signature has otherwise remained consistent. As of AutoMapper 5.1.1 You can get to the mapper using another overload of ResolveUsing with four parameters, fourth of … Read more
In my case am not allowed to modify existing tables but I discovered that when you add a new table with “Include foreign key columns in the model” checked in EF4 and the table doesn’t contain any foreign key relationships then you try to add a association it will trigger this error. Defining Constraints in … Read more
Although I do not like to answer my own question, but here is what solved my problem: After I found this link about Complex Types I tried several implementations, and after some headache I ended up with this. The List values get stored as a string on the table directly, so it’s not required to … Read more
Chen, I think your answer is correct. Some further background that might be helpful: In JavaScript, which was the original context for JSON, an object is like a hash map of strings to values, where some values are data, others are functions. You can think of each name-value pair as a property. But JavaScript doesn’t … Read more
Yes, you can do that. You just need to make it clear for hibernate which one is the mapping that it’s supposed to maintain, like so: @Column(name=”message_key”, updatable=false, insertable=false) private Long message_fk;
I would opt for AutoMapper, an open source and free mapping library which allows to map one type into another, based on conventions (i.e. map public properties with the same names and same/derived/convertible types, along with many other smart ones). Very easy to use, will let you achieve something like this: Model model = Mapper.Map<Model>(dto); … Read more
Checkout the Dozer project. Dozer supports simple property mapping, complex type mapping, bi-directional mapping, implicit-explicit mapping, as well as recursive mapping. It makes use of BeanUtils and extends on it.
df.merge out = (df1.merge(df2, left_on=’store’, right_on=’store_code’) .reindex(columns=[‘id’, ‘store’, ‘address’, ‘warehouse’])) print(out) id store address warehouse 0 1 100 xyz Land 1 2 200 qwe Sea 2 3 300 asd Land 3 4 400 zxc Land 4 5 500 bnm Sea pd.concat + df.sort_values u = df1.sort_values(‘store’) v = df2.sort_values(‘store_code’)[[‘warehouse’]].reset_index(drop=1) out = pd.concat([u, v], 1) print(out) … Read more
So this is how sourcemaps work in Gulp: Each element you select via gulp.src gets transferred into a virtual file object, consisting of the contents in a Buffer, as well as the original file name. Those are piped through your stream, where the contents get transformed. If you add sourcemaps, you add one more property … Read more