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updateWorksetParameter.go
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updateWorksetParameter.go
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// Copyright (c) 2016 OpenM++
// This code is licensed under the MIT license (see LICENSE.txt for details)
package db
import (
"container/list"
"database/sql"
"errors"
"strconv"
"time"
"github.com/openmpp/go/ompp/helper"
)
// UpdateWorksetParameter add new or replace existing workset parameter.
//
// If parameter already exist in workset then parameter metadata either merged or replaced.
// If parameter not exist in workset then parameter values must be supplied, it cannot be empty.
// If parameter not exist in workset then new parameter metadata and values inserted.
// If list of new parameter values supplied then parameter values completely replaced.
//
// Set name is used to find workset and set id updated with actual database value.
// Workset must be read-write for replace or merge.
func (meta *WorksetMeta) UpdateWorksetParameter(
dbConn *sql.DB, modelDef *ModelMeta, isReplaceMeta bool, param *ParamRunSetPub, cellLst *list.List, langDef *LangMeta,
) (int, error) {
// validate parameters
if modelDef == nil {
return 0, errors.New("invalid (empty) model metadata")
}
if param == nil {
return 0, errors.New("invalid (empty) parameter metadata")
}
if langDef == nil {
return 0, errors.New("invalid (empty) language list")
}
if meta.Set.Name == "" {
return 0, errors.New("invalid (empty) workset name")
}
if meta.Set.ModelId != modelDef.Model.ModelId {
return 0, errors.New("workset: " + meta.Set.Name + " invalid model id " + strconv.Itoa(meta.Set.ModelId) + " expected: " + strconv.Itoa(modelDef.Model.ModelId))
}
// do update in transaction scope
trx, err := dbConn.Begin()
if err != nil {
return 0, err
}
// if parameter values supplied then sub-value count must be positive
isData := cellLst != nil && cellLst.Len() > 0
if isData && param.SubCount <= 0 {
return 0, errors.New("parameter sub-value count must be positive: " + strconv.Itoa(param.SubCount) + ": " + param.Name)
}
// create, replace or merge workset metadata
paramHid, err := doUpdateWorksetParameterMeta(trx, modelDef, meta, isReplaceMeta, param, isData, langDef)
if err != nil {
trx.Rollback()
return 0, err
}
// if new parameter values supplied then insert or update parameter values in workset
if paramHid > 0 && isData {
var pm *ParamMeta
if k, ok := modelDef.ParamByName(param.Name); ok {
pm = &modelDef.Param[k]
} else {
trx.Rollback()
return 0, errors.New("parameter not found: " + param.Name)
}
err = doWriteSetParameter(trx, pm, meta.Set.SetId, param.SubCount, param.DefaultSubId, false, cellLst)
if err != nil {
trx.Rollback()
return 0, err
}
}
trx.Commit()
return paramHid, nil
}
// doUpdateWorksetParameter insert new or update existing workset parameter metadata.
// It does update as part of transaction.
//
// If parameter already exist in workset then parameter metadata either merged or replaced.
// If parameter not exist in workset then parameter values must be supplied, it cannot be empty.
// If parameter not exist in workset then new parameter metadata and values inserted.
// If list of new parameter values supplied then parameter values completely replaced.
//
// Set name is used to find workset and set id updated with actual database value.
// Workset must be read-write for replace or merge.
func doUpdateWorksetParameterMeta(
trx *sql.Tx, modelDef *ModelMeta, wm *WorksetMeta, isReplaceMeta bool, param *ParamRunSetPub, isData bool, langDef *LangMeta,
) (int, error) {
// find model parameter hId by name
idx, ok := modelDef.ParamByName(param.Name)
if !ok {
return 0, errors.New("model: " + modelDef.Model.Name + " parameter " + param.Name + " not found")
}
paramHid := modelDef.Param[idx].ParamHid
spHid := strconv.Itoa(paramHid)
// "lock" workset to prevent update or use by the model
wm.Set.ModelId = modelDef.Model.ModelId // update model id
err := TrxUpdate(trx,
"UPDATE workset_lst"+
" SET is_readonly = is_readonly + 1"+
" WHERE model_id = "+strconv.Itoa(modelDef.Model.ModelId)+" AND set_name = "+toQuoted(wm.Set.Name))
if err != nil {
return 0, err
}
// check if workset exist and not readonly
var setId, nRd int
err = TrxSelectFirst(trx,
"SELECT set_id, is_readonly FROM workset_lst"+
" WHERE model_id = "+strconv.Itoa(modelDef.Model.ModelId)+" AND set_name = "+toQuoted(wm.Set.Name),
func(row *sql.Row) error {
if err := row.Scan(&setId, &nRd); err != nil {
return err
}
return nil
})
switch {
case err == sql.ErrNoRows:
return 0, errors.New("failed to update: workset not found: " + wm.Set.Name)
case err != nil:
return 0, err
case nRd != 1:
return 0, errors.New("failed to update: workset is read-only: " + wm.Set.Name)
}
wm.Set.SetId = setId // workset exist, id may be different
// check if parameter exist in workset_parameter
sId := strconv.Itoa(wm.Set.SetId)
if isData {
err = TrxUpdate(trx, "UPDATE workset_parameter"+
" SET sub_count = "+strconv.Itoa(param.SubCount)+","+
" default_sub_id = "+strconv.Itoa(param.DefaultSubId)+
" WHERE set_id = "+sId+" AND parameter_hid = "+spHid)
} else {
err = TrxUpdate(trx, "UPDATE workset_parameter"+
" SET parameter_hid = "+spHid+
" WHERE set_id = "+sId+" AND parameter_hid = "+spHid)
}
if err != nil {
return 0, err
}
err = TrxSelectFirst(trx,
"SELECT parameter_hid FROM workset_parameter WHERE set_id = "+sId+" AND parameter_hid = "+spHid,
func(row *sql.Row) error {
h := 0
if err := row.Scan(&h); err != nil {
return err
}
return nil
})
if err != nil && err != sql.ErrNoRows {
return 0, err
}
isParamExist := err == nil // not sql.ErrNoRows
// if no data then parameter must exist in workset
if !isData && !isParamExist {
return 0, errors.New("parameter: " + param.Name + " must exist in workset: " + wm.Set.Name)
}
// if this is merge then insert ot update workset_parameter
// if this is replace then delete existing workset_parameter_txt and delete-insert workset_parameter
if !isReplaceMeta {
// parameter not exist in workset: do insert
if !isParamExist {
err = TrxUpdate(trx,
"INSERT INTO workset_parameter (set_id, parameter_hid, sub_count, default_sub_id) VALUES ("+
sId+", "+spHid+", "+strconv.Itoa(param.SubCount)+", "+strconv.Itoa(param.DefaultSubId)+")")
if err != nil {
return 0, err
}
}
} else { // repalce existing parameter metadata: delete text and delete-insert workset_parameter
err = TrxUpdate(trx, "DELETE FROM workset_parameter_txt WHERE set_id = "+sId+" AND parameter_hid = "+spHid)
if err != nil {
return 0, err
}
err = TrxUpdate(trx, "DELETE FROM workset_parameter WHERE set_id = "+sId+" AND parameter_hid = "+spHid)
if err != nil {
return 0, err
}
err = TrxUpdate(trx,
"INSERT INTO workset_parameter (set_id, parameter_hid, sub_count, default_sub_id) VALUES ("+
sId+", "+spHid+", "+strconv.Itoa(param.SubCount)+", "+strconv.Itoa(param.DefaultSubId)+")")
if err != nil {
return 0, err
}
}
// delete and insert into workset parameter text: parameter value notes
for j := range param.Txt {
if lId, ok := langDef.IdByCode(param.Txt[j].LangCode); ok { // if language code valid
slId := strconv.Itoa(lId)
if !isReplaceMeta {
err = TrxUpdate(trx,
"DELETE FROM workset_parameter_txt"+
" WHERE set_id = "+sId+
" AND parameter_hid = "+spHid+
" AND lang_id = "+slId)
if err != nil {
return 0, err
}
}
err = TrxUpdate(trx,
"INSERT INTO workset_parameter_txt (set_id, parameter_hid, lang_id, note)"+
" SELECT "+
sId+", "+" parameter_hid, "+slId+", "+toQuotedOrNullMax(param.Txt[j].Note, noteDbMax)+
" FROM workset_parameter"+
" WHERE set_id = "+sId+
" AND parameter_hid = "+spHid)
if err != nil {
return 0, err
}
}
}
// "unlock" workset for parameter values write: restore original value of is_readonly=0
wm.Set.UpdateDateTime = helper.MakeDateTime(time.Now())
err = TrxUpdate(trx,
"UPDATE workset_lst"+
" SET is_readonly = 0,"+
" update_dt = "+toQuoted(wm.Set.UpdateDateTime)+
" WHERE set_id = "+strconv.Itoa(setId))
if err != nil {
return 0, err
}
return paramHid, nil
}