Appending child's Json::Value after appending parent's Json::Value does not change parent data, any...
I am constructing json from tree data, but when i add node_level_3 from node_level_2 after adding node_level_2 from node_level_1, node_level_2 does not has information abour node_level_3.
Here is my code.
node_level_1 = new Json::Value();
(*node_level_1)["data"] = first_value;
if (some_other_string != "")
{
node_level_2 = new Json::Value();
(*node_level_2)["data"] = some_other_string ;
(*node_level_1)["child"].append(*node_level_2);
}
if (another_string!= "")
{
node_level_3 = new Json::Value();
(*node_level_3) ["data"] = another_string;
(*node_level_2) ["child"].append(*node_level_3 );
}
I guess the problem is that 'Json::Value.append() function' only copy its data, not pointer or reference. So If i change data of node_level_2, it does not affect previously added node_level_2.
How can i solve this problem??
Should i have to traverse all the bottom nodes(level #3) of tree, and construct parent tree node (level #2) and finally add all the parent to root node(level #1)? Is this only solution With JsonCpp ?
c++ jsoncpp
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
|
show 1 more comment
I am constructing json from tree data, but when i add node_level_3 from node_level_2 after adding node_level_2 from node_level_1, node_level_2 does not has information abour node_level_3.
Here is my code.
node_level_1 = new Json::Value();
(*node_level_1)["data"] = first_value;
if (some_other_string != "")
{
node_level_2 = new Json::Value();
(*node_level_2)["data"] = some_other_string ;
(*node_level_1)["child"].append(*node_level_2);
}
if (another_string!= "")
{
node_level_3 = new Json::Value();
(*node_level_3) ["data"] = another_string;
(*node_level_2) ["child"].append(*node_level_3 );
}
I guess the problem is that 'Json::Value.append() function' only copy its data, not pointer or reference. So If i change data of node_level_2, it does not affect previously added node_level_2.
How can i solve this problem??
Should i have to traverse all the bottom nodes(level #3) of tree, and construct parent tree node (level #2) and finally add all the parent to root node(level #1)? Is this only solution With JsonCpp ?
c++ jsoncpp
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34
|
show 1 more comment
I am constructing json from tree data, but when i add node_level_3 from node_level_2 after adding node_level_2 from node_level_1, node_level_2 does not has information abour node_level_3.
Here is my code.
node_level_1 = new Json::Value();
(*node_level_1)["data"] = first_value;
if (some_other_string != "")
{
node_level_2 = new Json::Value();
(*node_level_2)["data"] = some_other_string ;
(*node_level_1)["child"].append(*node_level_2);
}
if (another_string!= "")
{
node_level_3 = new Json::Value();
(*node_level_3) ["data"] = another_string;
(*node_level_2) ["child"].append(*node_level_3 );
}
I guess the problem is that 'Json::Value.append() function' only copy its data, not pointer or reference. So If i change data of node_level_2, it does not affect previously added node_level_2.
How can i solve this problem??
Should i have to traverse all the bottom nodes(level #3) of tree, and construct parent tree node (level #2) and finally add all the parent to root node(level #1)? Is this only solution With JsonCpp ?
c++ jsoncpp
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
I am constructing json from tree data, but when i add node_level_3 from node_level_2 after adding node_level_2 from node_level_1, node_level_2 does not has information abour node_level_3.
Here is my code.
node_level_1 = new Json::Value();
(*node_level_1)["data"] = first_value;
if (some_other_string != "")
{
node_level_2 = new Json::Value();
(*node_level_2)["data"] = some_other_string ;
(*node_level_1)["child"].append(*node_level_2);
}
if (another_string!= "")
{
node_level_3 = new Json::Value();
(*node_level_3) ["data"] = another_string;
(*node_level_2) ["child"].append(*node_level_3 );
}
I guess the problem is that 'Json::Value.append() function' only copy its data, not pointer or reference. So If i change data of node_level_2, it does not affect previously added node_level_2.
How can i solve this problem??
Should i have to traverse all the bottom nodes(level #3) of tree, and construct parent tree node (level #2) and finally add all the parent to root node(level #1)? Is this only solution With JsonCpp ?
c++ jsoncpp
c++ jsoncpp
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
asked Nov 22 '18 at 13:02
Knowledge DrillingKnowledge Drilling
3591415
3591415
Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34
|
show 1 more comment
Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34
Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34
|
show 1 more comment
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Why do you use so much dynamic allocation and pointers? And did you expect that dereferencing one would result in a reference? It is not clear what you're trying to do.
– Lightness Races in Orbit
Jan 2 at 17:23
I was trying to convert excel-like data(multiple rows & cols) to json format. I had to add each col's data in a row into each json level. So i don't know how much parent json node will add child node(at the same col level).
– Knowledge Drilling
Jan 3 at 11:05
Anyway i implemented tree traversing mechanism from the bottom colum to root colum. So i don't need to change parent node anymore after adding child node.
– Knowledge Drilling
Jan 3 at 11:10
You neither need nor want any of this dynamic allocation. You're leaking memory like a sieve!
– Lightness Races in Orbit
Jan 3 at 11:17
Maybe i should delete all the appended data from Json tree after using it. Like deleting from child node to parent node, like recursively.
– Knowledge Drilling
Jan 4 at 14:34