From 059a8baa815f0b50d11546ad26b854572ef52182 Mon Sep 17 00:00:00 2001
From: tomsmeding <hallo@tomsmeding.nl>
Date: Fri, 22 May 2015 21:13:51 +0200
Subject: CreateQuery, InsertQuery, add message in QueryResult

---
 query.cpp | 56 ++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 44 insertions(+), 12 deletions(-)

(limited to 'query.cpp')

diff --git a/query.cpp b/query.cpp
index 3f3d6ec..2e1606f 100644
--- a/query.cpp
+++ b/query.cpp
@@ -11,25 +11,39 @@ WhereClause::WhereClause(const int _c,const RowItem &_v):col(_c),value(_v){}
 QueryResult::QueryResult(void):res(0){}
 QueryResult::QueryResult(int _res):res(_res){}
 QueryResult::QueryResult(int _res,const vector<Row> &_rows):res(_res),rows(_rows){}
+QueryResult::QueryResult(int _res,const vector<Row> &_rows,const string &_m):res(_res),rows(_rows),msg(_m){}
+QueryResult::QueryResult(int _res,const string &_m):res(_res),msg(_m){}
 
 
-Query::Query(void):limit(-1){}
+QueryResult Query::execute(map<string,Table> &tables){return QueryResult(-1);}
 
-QueryResult Query::execute(const map<string,Table> &tables){return QueryResult(-1);}
 
+CreateQuery::CreateQuery(void):nc(0),header(NULL){}
 
-FindQuery::FindQuery(void):sort(0){};
+void CreateQuery::setHeader(const ColHeader *hd){
+	header=new ColHeader[nc];
+	memcpy(header,hd,nc*sizeof(ColHeader));
+}
+
+QueryResult CreateQuery::execute(map<string,Table> &tables){
+	if(nc==0)return QueryResult(0,"zero nc");
+	if(header==NULL)return QueryResult(0,"null header");
+	const map<string,Table>::const_iterator tit=tables.find(tablename);
+	if(tit!=tables.cend())return QueryResult(0,"existing table");
+	tables.emplace(piecewise_construct,
+	               forward_as_tuple(tablename),
+	               forward_as_tuple(tablename,nc,header));
+	return QueryResult(1);
+}
 
-QueryResult FindQuery::execute(const map<string,Table> &tables){
-	if(limit==0)return QueryResult(0);
+
+FindQuery::FindQuery(void):limit(-1),sort(0){};
+
+QueryResult FindQuery::execute(map<string,Table> &tables){
+	if(limit==0)return QueryResult(0,"zero limit");
 	int i,j;
-	/*for(i=0;i<(int)tables.size();i++){
-		if(tables[i].name==from)break;
-	}
-	if(i==(int)tables.size())return QueryResult(0);
-	const Table &table=tables[i];*/
-	const map<string,Table>::const_iterator tit=tables.find(from);
-	if(tit==tables.cend())return QueryResult(0);
+	const map<string,Table>::const_iterator tit=tables.find(tablename);
+	if(tit==tables.cend())return QueryResult(0,"non-existent table");
 	const Table &table=tit->second;
 
 	for(i=0;i<(int)where.size();i++){
@@ -62,7 +76,25 @@ QueryResult FindQuery::execute(const map<string,Table> &tables){
 		if(i==(int)where.size()){
 			ret.res++;
 			ret.rows.emplace_back(it->second);
+			if(ret.res==limit)return ret;
 		}
 	}
 	return ret;
 }
+
+
+InsertQuery::InsertQuery(const Row &_r):row(_r){}
+InsertQuery::InsertQuery(Row &&_r):row(move(_r)){}
+
+QueryResult InsertQuery::execute(map <string,Table> &tables){
+	map<string,Table>::iterator tit=tables.find(tablename);
+	if(tit==tables.end())return QueryResult(0,"non-existent table");
+	Table &table=tit->second;
+
+	if(table.nc!=row.nc)return QueryResult(0,"non-conformant row width");
+	const string primkey=serialise(table.header[0],row.items[0]);
+	const map<string,Row>::const_iterator rit=table.rows.find(primkey);
+	if(rit!=table.rows.cend())return QueryResult(0,"existing primary key");
+	table.rows.insert(make_pair(primkey,row));
+	return QueryResult(1);
+}
-- 
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