how to store data in a different class object?

[hanna88]

hello..
is there a way of storing data to other class object.
here's the problem.
class Repository is where it reads through the sentences and tokenize it
into words . and what i did is by using strtok i keep all the tokenize words into a vector.and planning to store this vector of word into class Word object.

im not sure whether this is a good idea because it seems hard to store a list of vector into an object of different class.

any help would be great! thanks!

[Banfa]

Are you planing on storing the whole vector in a single instance of the Word class or are you planning to store each entry in the vector in a separate instance of the class?

Either way it is a fairly simple job to just create your Word class with a constructor that takes the right data.

[hanna88]

but how should i indicate the word should be stored in class Word constructor.
will this do .. Word* p where p is the tokenize word and keep updated in a while loop for strtok. thanks for your input.

[sumeshnb]

Hi,
There are many ways in which you can store data into other class object, Bafna already gave you one way.
you just define your other calss constructor like following:
Word::Word(verctor<words> &vwords)
{
m_vectorWords = vwords;//m_verctorWords is a data member of type
// vector<words>
}

One another possible way could be(In case the Word object already exisitng) implement a interface function in otherclass like following:

Word::setVectorWord(vector<word> &vw)
{
m_vectorWords = vw;//m_verctorWords is a data member of type
// vector<words>
}

and call this interface function from your Repository class after tokenizing and putting the words in to token.

[hanna88]

hi.thank you for your reply.

@sumeshnb
just quick que.. is &vw is where i have the tokenize word in this case?
i was given a constructor Word(string word); i reckon i cant just passed vector<word> into this constructor.so if i do it this way,will the data be passed to the Word object since i didnt declare it in a constructor?

[sumeshnb]

Yes in "vector<word> &vw" you have the words tokenized.

From your reply I understand your constructor of Word looks like
Word::Word(string word), If that is the case you may have to write a new constructor..
You cannot pass vector<word> to your existing constructor...!

If the explanation is not satisfactory, please give more details of the classes with examples.

[hanna88]

hi.this is the h.file for the code.

class Word {
 
        private:
            std::string word;
 
        public:
        Sentence *getSentence();
        void setSentence(Sentence *sentence);
        Word(string word); 
        virtual string getKey() { return word;};
        virtual ~Word();
        virtual string asString();
        __declspec( property(get = getSentence, put = setSentence))
        Sentence *mySentence;
};
 
class Sentence {
 
        public:
        Document *getDocument();
        void setDocument(Document *document);
        Sentence();
        virtual ~Sentence();
        virtual string asString();
        __declspec( property(get = getDocument, put = setDocument))
        Document *myDocument;
};
 
class Document {
 
        private:
        string documentId;
 
        public:
        Repository *getRepository();
        void setRepository(Repository *repository);
        Document(string documentId);
        virtual ~Document();
        virtual string getKey() { return documentId;};
        virtual string asString();
        __declspec( property(get = getRepository, put = setRepository))
        Repository *myRepository;
};
 
class WordCollection : public vector<Word*> {
 
        public:
        string asString() {
        string result;
        WordCollection::iterator iter = begin();
 
        for (; iter != end(); iter++) {
            result += (*iter)->getKey() + "|" +
            (*iter)->mySentence->asString() + "|" +
            (*iter)->mySentence->myDocument->getKey() + "\n";}
        return result;
        }
};
 
class Repository {
 
        public:
        virtual ~Repository();
        string asString();
        Document *addDocument(iostream& inStream, string documentId);
        void clear();
        void search(const string& keyword, WordCollection& coll);
};
 

i try to start by doing the function below where i did convert it to string using getline and try to tokenize the str.

Document *addDocument(iostream& inStream, string documentId);
 

here' the problem.i dont understand how can i store the tokenize word into Class Word.same goes for sentences which will be store in Class Sentence if i tried adding all the tokenize word into vector.
the other problem is how can i store the Word pointers in each Sentence object and etc.

any examples would be really great.
thanks

[sumeshnb]

If I understand your problem correctly , I would write the
function
Document *addDocument(iostream& inStream, string documentId);
as follows:



Document *Repository::addDocument(iostream& inStream, string documentId)
{

char line[250];
inStream.getline(line,250);

char * ptrToToken = NULL;
ptrToToken = strtok (line," ,.-");//assumes words are separated
//by spaces,comma,dot or hyphen

Sentence * ptrToSent = new Sentence();

Document * ptrToDoc = new Document(documentId);

ptrToSent -> setDocument(ptrToDoc);
ptrToDoc ->setRepository(this);

while (ptrToToken != NULL)
{
Word * ptrToWord = new Word(ptrToToken);
ptrWord -> setSentence(ptrToSent);
ptrToScent -> addWord(ptrToWord)
ptrToToken = strtok (NULL, " ,.-");
}


return ptrToDoc;
}



Before writing the above function , I assume there is a
data member and member function in Sentence class like the following :

Data member:
WordCollection wordColl;

member function:
Sentence::addWord(Word * ptrToWord)
{
wordColl.push_back(ptrToWord);
}

[hanna88]

i'll try to understand the code.u've been a great help! thank you . :D