Ejemplo n.º 1
0
func (c *Cursor) Fetch(m interface{}, n int, closeWhenDone bool) (
	*dbox.DataSet, error) {

	if closeWhenDone {
		defer c.Close()
	}

	e := c.prepIter()
	if e != nil {
		return nil, errorlib.Error(packageName, modCursor, "Fetch", e.Error())
	}

	ds := dbox.NewDataSet(m)
	// lineCount := 0
	//=============================
	maxGetData := c.count
	if n > 0 {
		maxGetData = c.fetchRow + n
	}
	linecount := 0

	for _, row := range c.reader.Sheet[c.sheetname].Rows {
		isAppend := true
		recData := toolkit.M{}
		appendData := toolkit.M{}

		for i, cell := range row.Cells {
			if i < len(c.headerColumn) {
				recData.Set(c.headerColumn[i].name, cell.Value)

				if c.ConditionVal.Select == nil || c.ConditionVal.Select.Get("*", 0).(int) == 1 {
					appendData.Set(c.headerColumn[i].name, cell.Value)
				} else {
					if c.ConditionVal.Select.Get(c.headerColumn[i].name, 0).(int) == 1 {
						appendData.Set(c.headerColumn[i].name, cell.Value)
					}
				}
			}
		}

		isAppend = c.ConditionVal.getCondition(recData)

		if c.fetchRow < c.ConditionVal.skip || (c.fetchRow > (c.ConditionVal.skip+c.ConditionVal.limit) && c.ConditionVal.limit > 0) {
			isAppend = false
		}

		if isAppend && len(appendData) > 0 {
			linecount += 1
			if linecount > c.fetchRow {
				ds.Data = append(ds.Data, appendData)
				c.fetchRow += 1
			}
		}

		if c.fetchRow >= maxGetData {
			break
		}
	}
	return ds, nil
}
Ejemplo n.º 2
0
func (c *Cursor) Fetch(m interface{}, n int, closeWhenDone bool) (
	*dbox.DataSet, error) {
	ds := dbox.NewDataSet(m)
	fmt.Println(c.QueryString)
	rows, e := c.session.Query(c.QueryString)
	if e != nil {
		return nil, e
	}
	defer rows.Close()
	columns, e := rows.Columns()
	if e != nil {
		return nil, e
	}
	count := len(columns)
	tableData := make([]map[string]interface{}, 0)
	values := make([]interface{}, count)
	valuePtrs := make([]interface{}, count)
	for rows.Next() {
		for i := 0; i < count; i++ {
			valuePtrs[i] = &values[i]
		}
		rows.Scan(valuePtrs...)
		entry := make(map[string]interface{})
		for i, col := range columns {
			var v interface{}
			val := values[i]
			b, ok := val.([]byte)
			if ok {
				v = string(b)
			} else {
				v = val
			}
			entry[col] = v
		}
		tableData = append(tableData, entry)
	}
	if e != nil {
		return nil, e
	}
	if n == 0 {
		for i := 0; i < len(tableData); i++ {
			ds.Data = append(ds.Data, tableData[i])
		}
	} else {
		end := c.start + n
		if end > len(tableData) {
			e = errors.New("index out of range")
		} else {
			for i := c.start; i < end; i++ {
				ds.Data = append(ds.Data, tableData[i])
				c.start = i + 1
			}
			e = nil
		}
	}

	return ds, e
}
Ejemplo n.º 3
0
func (c *Cursor) Fetch(m interface{}, n int, closeWhenDone bool) (
	*dbox.DataSet, error) {
	if closeWhenDone {
		c.Close()
	}

	e := c.prepIter()
	if e != nil {
		return nil, errorlib.Error(packageName, modCursor, "Fetch", e.Error())
	}

	if c.jsonSelect == nil {
		return nil, errorlib.Error(packageName, modCursor, "Fetch", "Iter object is not yet initialized")
	}

	datas := []interface{}{}
	dec := json.NewDecoder(strings.NewReader(string(c.readFile)))
	dec.Decode(&datas)
	ds := dbox.NewDataSet(m)
	if n == 0 {
		whereFieldsToMap, _ := toolkit.ToM(c.whereFields)

		b := c.getCondition(whereFieldsToMap)
		var foundSelected = toolkit.M{}
		var foundData = []toolkit.M{}
		var getRemField = toolkit.M{}
		if c.isWhere {
			if b {
				for _, v := range datas {
					for i, subData := range v.(map[string]interface{}) {
						getRemField[i] = i //append(getRemField, i)
						for _, vWhere := range whereFieldsToMap {
							for _, subWhere := range vWhere.([]interface{}) {
								for _, subsubWhere := range subWhere.(map[string]interface{}) {
									if len(c.jsonSelect.([]string)) == 0 {
										if strings.ToLower(subData.(string)) == strings.ToLower(subsubWhere.(string)) {
											ds.Data = append(ds.Data, v)
										}
									} else {
										if strings.ToLower(subData.(string)) == strings.ToLower(subsubWhere.(string)) {
											foundData = append(foundData, v.(map[string]interface{}))
										}
									}
								}
							}
						}
					}
				}

				itemToRemove := removeDuplicatesUnordered(getRemField, c.jsonSelect.([]string))

				if len(foundData) > 0 {
					var found toolkit.M
					for _, found = range foundData {
						for _, remitem := range itemToRemove {
							found.Unset(remitem)
						}

						ds.Data = append(ds.Data, found)
					}
				}
			} else {
				for _, v := range datas {
					for _, v2 := range v.(map[string]interface{}) {
						for _, vWhere := range c.whereFields.(toolkit.M) {
							if reflect.ValueOf(v2).Kind() == reflect.String {
								if strings.ToLower(v2.(string)) == strings.ToLower(vWhere.(string)) {
									if len(c.jsonSelect.([]string)) == 0 {
										ds.Data = append(ds.Data, v)
									} else {
										// fmt.Println(c.jsonSelect.([]string)[0])
										// fmt.Println(v.(map[string]interface{}))
										foundData = append(foundData, v.(map[string]interface{}))
									}
								}
							}

						}
					}
				}

				if len(foundData) > 0 {

					for _, found := range foundData {
						for i, subData := range found {
							for _, selected := range c.jsonSelect.([]string) {
								if strings.ToLower(selected) == strings.ToLower(i) {
									foundSelected[i] = subData
								} else if selected == "*" {
									foundSelected[i] = subData
								}
							}
						}
					}
					ds.Data = append(ds.Data, foundSelected)
				}
			}
		} else {
			if c.jsonSelect.([]string)[0] != "*" {
				for _, v := range datas {
					for i, _ := range v.(map[string]interface{}) {
						getRemField[i] = i
					}
				}

				itemToRemove := removeDuplicatesUnordered(getRemField, c.jsonSelect.([]string))
				for _, found := range datas {
					toMap := toolkit.M(found.(map[string]interface{}))
					for _, remitem := range itemToRemove {
						toMap.Unset(remitem)
					}

					ds.Data = append(ds.Data, found)
				}
			} else {
				ds.Data = datas
			}
		}
	} else if n > 0 {
		fetched := 0
		fetching := true

		///read line
		fetchFile, e := os.OpenFile(c.tempPathFile, os.O_RDWR, 0)
		defer fetchFile.Close()
		if e != nil {
			return nil, errorlib.Error(packageName, modQuery+".Exec", "Fetch file", e.Error())
		}
		c.fetchSession = fetchFile

		scanner := bufio.NewScanner(fetchFile)
		lines := 0
		for scanner.Scan() {
			lines++
		}
		if lines > 0 {
			fetched = lines
			n = n + lines
		}
		for fetching {
			var dataM = toolkit.M{}

			if c.jsonSelect.([]string)[0] != "*" {
				for i := 0; i < len(c.jsonSelect.([]string)); i++ {

					dataM[c.jsonSelect.([]string)[i]] = datas[fetched].(map[string]interface{})[c.jsonSelect.([]string)[i]]

					if len(dataM) == len(c.jsonSelect.([]string)) {
						ds.Data = append(ds.Data, dataM)
					}
				}
			} else {
				ds.Data = append(ds.Data, datas[fetched])
			}
			io.WriteString(fetchFile, toolkit.JsonString(dataM)+"\n")

			fetched++
			if fetched == n {

				fetching = false
			}
		}
	}
	// c.Close()
	return ds, nil
}
Ejemplo n.º 4
0
func (c *Cursor) Fetch(m interface{}, n int, closeWhenDone bool) (
	*dbox.DataSet, error) {

	if closeWhenDone {
		defer c.Close()
	}

	e := c.prepIter()
	if e != nil {
		return nil, errorlib.Error(packageName, modCursor, "Fetch", e.Error())
	}

	ds := dbox.NewDataSet(m)
	lineCount := 0

	//=============================
	for {
		isAppend := true
		c.count += 1
		recData := toolkit.M{}
		appendData := toolkit.M{}

		dataTemp, e := c.reader.Read()

		for i, val := range dataTemp {
			recData[c.headerColumn[i].name] = val

			if c.ConditionVal.Select == nil || c.ConditionVal.Select.Get("*", 0).(int) == 1 {
				appendData[c.headerColumn[i].name] = val
			} else {
				if c.ConditionVal.Select.Get(c.headerColumn[i].name, 0).(int) == 1 {
					appendData[c.headerColumn[i].name] = val
				}
			}
		}

		isAppend = c.ConditionVal.getCondition(recData)

		if c.count < c.ConditionVal.skip || (c.count > (c.ConditionVal.skip+c.ConditionVal.limit) && c.ConditionVal.limit > 0) {
			isAppend = false
		}

		if e == io.EOF {
			if isAppend && len(appendData) > 0 {
				ds.Data = append(ds.Data, appendData)
				lineCount += 1
			}
			break
		} else if e != nil {
			return ds, errorlib.Error(packageName, modCursor,
				"Fetch", e.Error())
		}
		if isAppend && len(appendData) > 0 {
			ds.Data = append(ds.Data, appendData)
			lineCount += 1
		}

		if n > 0 {
			if lineCount >= n {
				break
			}
		}
	}
	return ds, nil
}