can anyone give me sample coding that using grails ajax onload and oncomplete functions on following reader action? i want show a spinner icon while this action is onload and redirect to the list page while action is oncomplete..
def reader(){
def list = []
def dir = new File("C:/Users/User/Desktop/Summarize_20141212/HR_FILE")
dir.eachFileRecurse(FileType.FILES) { file ->
list << file
}
println list
list.each {
File file = new File(it.path)
def sql = groovy.sql.Sql.newInstance("jdbc:postgresql://localhost:5432/new",
'postgres', 'sa', "org.postgresql.Driver")
def lincoln = 0
file.eachLine() { line ->
if (line.trim().size() == 0) {
return null
} else {
def field = []
def tokens = line.split(',(?=([^\"]*\"[^\"]*\")*[^\"]*$)')
file.name.lastIndexOf('.').with { it != -1 ? file.name[0..<it] : file.name }
lincoln++
field.push(file.name)
for (String t : tokens) {
field.push(t)
}
while (field.size() < 10) {
field.push("")
}
if (lincoln > 1) {
sql.execute('insert into read_hr(version,col01,col02,col03,col04,col05,col06,col07,col08,col09,col10)' +
'VALUES (0,?,?,?,?,?,?,?,?,?,?)', field)
System.out.println(field);
}
}
}
}
redirect (action:"list")
}
These link will useful to you .
http://www.javacodegeeks.com/2013/05/grails-ajax-examples.html
http://javadeveloper.asia/grails-ajax-tutorial-remotelink-tag
Related
Lets say I have events like this in my log
{type:"approval_revokation", approval_id=22}
{type:"approval", request_id=12, approval_id=22}
{type:"control3", request_id=12}
{type:"control2", request_id=12}
{type:"control1", request_id=12}
{type:"request", request_id=12 requesting_user="user1"}
{type:"registration", userid="user1"}
I would like to do a search that aggregates one bucket for each approval_id containing all events connected to it as above. As you see there is not a single id field that can be used throughout the events, but they are all connected in a chain.
The reason I would like this is to feed this into a anomaly detector to verify things like that all controls where executed and validate registration event for a eventual approval.
Can this be done using aggregation or are there any other suggestion?
If there's no single unique "glue" parameter to tie these events together, I'm afraid the only choice is a brute-force map-reduce iterator on all the docs in the index.
After ingesting the above events:
POST _bulk
{"index":{"_index":"events","_type":"_doc"}}
{"type":"approval_revokation","approval_id":22}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"approval","request_id":12,"approval_id":22}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"control3","request_id":12}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"control2","request_id":12}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"control1","request_id":12}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"request","request_id":12,"requesting_user":"user1"}
{"index":{"_index":"events","_type":"_doc"}}
{"type":"registration","userid":"user1"}
we can link them together like so:
POST events/_search
{
"size": 0,
"aggs": {
"log_groups": {
"scripted_metric": {
"init_script": "state.groups = [];",
"map_script": """
int fetchIndex(List groups, def key, def value, def backup_key) {
if (key == null || value == null) {
// nothing to search
return -1
}
return IntStream.range(0, groups.size())
.filter(i -> groups.get(i)['docs']
.stream()
.anyMatch(_doc -> _doc.get(key) == value
|| (backup_key != null
&& _doc.get(backup_key) == value)))
.findFirst()
.orElse(-1);
}
def approval_id = doc['approval_id'].size() != 0
? doc['approval_id'].value
: null;
def request_id = doc['request_id'].size() != 0
? doc['request_id'].value
: null;
def requesting_user = doc['requesting_user.keyword'].size() != 0
? doc['requesting_user.keyword'].value
: null;
def userid = doc['userid.keyword'].size() != 0
? doc['userid.keyword'].value
: null;
HashMap valueMap = ['approval_id':approval_id,
'request_id':request_id,
'requesting_user':requesting_user,
'userid':userid];
def found = false;
for (def entry : valueMap.entrySet()) {
def field = entry.getKey();
def value = entry.getValue();
def backup_key = field == 'userid'
? 'requesting_user'
: field == 'requesting_user'
? 'userid'
: null;
def found_index = fetchIndex(state.groups, field, value, backup_key);
if (found_index != -1) {
state.groups[found_index]['docs'].add(params._source);
if (approval_id != null) {
state.groups[found_index]['approval_id'] = approval_id;
}
found = true;
break;
}
}
if (!found) {
HashMap nextInLine = ['docs': [params._source]];
if (approval_id != null) {
nextInLine['approval_id'] = approval_id;
}
state.groups.add(nextInLine);
}
""",
"combine_script": "return state",
"reduce_script": "return states"
}
}
}
}
returning the grouped events + the inferred approval_id:
"aggregations" : {
"log_groups" : {
"value" : [
{
"groups" : [
{
"docs" : [
{...}, {...}, {...}, {...}, {...}, {...}, {...}
],
"approval_id" : 22
},
{ ... }
]
}
]
}
}
Keep in mind that such scripts are going to be quite slow, esp. when run on large numbers of events.
Intro
We're developing this javascript based web application that is supposed to print receipts using the epson javascript sdk.
Right now we've got this poc where multiple printers can be added to the app and where receipts can be printed per individual printer.
The problem is that the receipt will ONLY be printer from the last added printer.
Further investigating tells us that the sdk just uses the last added (connected) printer. This can be seen at the following images.
In the first image there are 2 printers setup. Notice the different ip addresses.
In the second image we log what EpsonPrinter instance is being used while printing. Notice the ip address is clearly the first printer.
In the third image we trace the network. Notice the ip address that is actually used (ignore the error).
We created our own EpsonPrinter class that can be found here or here below.
EpsonPrinter
export default class EpsonPrinter {
name = null
ipAddress = null
port = null
deviceId = null
crypto = false
buffer = false
eposdev = null
printer = null
intervalID = null
restry = 0
constructor (props) {
const {
name = 'Epson printer',
ipAddress,
port = 8008,
deviceId = 'local_printer',
crypto = false,
buffer = false
} = props
this.name = name
this.ipAddress = ipAddress
this.port = port
this.deviceId = deviceId
this.crypto = crypto
this.buffer = buffer
this.eposdev = new window.epson.ePOSDevice()
this.eposdev.onreconnecting = this.onReconnecting
this.eposdev.onreconnect = this.onReconnect
this.eposdev.ondisconnect = this.onDisconnect
this.connect()
}
onReconnecting = () => {
this.consoleLog('reconnecting')
}
onReconnect = () => {
this.consoleLog('reconnect')
}
onDisconnect = () => {
this.consoleLog('disconnect')
if (this.intervalID === null ){
this.intervalID = setInterval(() => this.reconnect(), 5000)
}
}
connect = () => {
this.consoleLog('connect')
this.eposdev.ondisconnect = null
this.eposdev.disconnect()
this.eposdev.connect(this.ipAddress, this.port, this.connectCallback)
}
reconnect = () => {
this.consoleLog('(Re)connect')
this.eposdev.connect(this.ipAddress, this.port, this.connectCallback)
}
connectCallback = (data) => {
clearInterval(this.intervalID)
this.intervalID = null
this.eposdev.ondisconnect = this.onDisconnect
if (data === 'OK' || data === 'SSL_CONNECT_OK') {
this.createDevice()
} else {
setTimeout(() => this.reconnect(), 5000)
}
}
createDevice = () => {
console.log('create device, try: ' + this.restry)
const options = {
crypto: this.crypto,
buffer: this.buffer
}
this.eposdev.createDevice(this.deviceId, this.eposdev.DEVICE_TYPE_PRINTER, options, this.createDeviceCallback)
}
createDeviceCallback = (deviceObj, code) => {
this.restry++
if (code === 'OK') {
this.printer = deviceObj
this.printer.onreceive = this.onReceive
} else if (code === 'DEVICE_IN_USE') {
if (this.restry < 5) {
setTimeout(() => this.createDevice(), 3000)
}
}
}
onReceive = (response) => {
this.consoleLog('on receive: ', response)
let message = `Print ${this.name} ${response.success ? 'success' : 'failute'}\n`
message += `Code: ${response.code}\n`
message += `Status: \n`
if (response.status === this.printer.ASB_NO_RESPONSE) { message += ' No printer response\n' }
if (response.status === this.printer.ASB_PRINT_SUCCESS) { message += ' Print complete\n' }
if (response.status === this.printer.ASB_DRAWER_KICK) { message += ' Status of the drawer kick number 3 connector pin = "H"\n' }
if (response.status === this.printer.ASB_OFF_LINE) { message += ' Offline status\n' }
if (response.status === this.printer.ASB_COVER_OPEN) { message += ' Cover is open\n' }
if (response.status === this.printer.ASB_PAPER_FEED) { message += ' Paper feed switch is feeding paper\n' }
if (response.status === this.printer.ASB_WAIT_ON_LINE) { message += ' Waiting for online recovery\n' }
if (response.status === this.printer.ASB_PANEL_SWITCH) { message += ' Panel switch is ON\n' }
if (response.status === this.printer.ASB_MECHANICAL_ERR) { message += ' Mechanical error generated\n' }
if (response.status === this.printer.ASB_AUTOCUTTER_ERR) { message += ' Auto cutter error generated\n' }
if (response.status === this.printer.ASB_UNRECOVER_ERR) { message += ' Unrecoverable error generated\n' }
if (response.status === this.printer.ASB_AUTORECOVER_ERR) { message += ' Auto recovery error generated\n' }
if (response.status === this.printer.ASB_RECEIPT_NEAR_END) { message += ' No paper in the roll paper near end detector\n' }
if (response.status === this.printer.ASB_RECEIPT_END) { message += ' No paper in the roll paper end detector\n' }
if (response.status === this.printer.ASB_SPOOLER_IS_STOPPED) { message += ' Stop the spooler\n' }
if (!response.success) {
alert(message)
// TODO: error message?
} else {
// TODO: success -> remove from queue
}
}
printReceipt = () => {
this.consoleLog(`Print receipt, `, this)
try {
if (!this.printer) {
throw `No printer created for ${this.name}`
}
this.printer.addPulse(this.printer.DRAWER_1, this.printer.PULSE_100)
this.printer.addText(`Printed from: ${this.name}\n`)
this.printer.send()
} catch (err) {
let message = `Print ${this.name} failure\n`
message += `Error: ${err}`
alert(message)
}
}
consoleLog = (...rest) => {
console.log(`${this.name}: `, ...rest)
}
}
Poc
The full working poc can be found here.
Epson javascript sdk
2.9.0
Does anyone have any experience with the epson sdk? It it supposed to be able to support multiple connections on the same time? Please let use know.
For the ones looking for a way to handle multiple printers using this SDK. We came up with the following work around:
We created a separated 'printer app' that is responsible for handling ONE printer connection and hosted it online. We then 'load' this printer app into our app that needs multiple connections using Iframes. Communication between app and printer app is done by means of window.PostMessage API to, for example, initialise the printer with the correct printer connection and providing data that has to be printed.
It takes some effort but was the most stable solution we could come up with handling multiple connections.
If anyone else comes up with a better approach please let me know!
You can checkout our printer app here for inspiration (inspect the app because it doesn't show much visiting it just like that).
For use your class EpsonPrinter, i add also myPrinters class after your class:
class myPrinters {
printers = null;
cantidad = 0;
constructor() {
console.log("Creo la coleccion de printers");
this.printers = [];
}
inicializarConeccionImpresora(idImpresora, ip, puerto, _deviceId) {
let ipAddress = ip;
let port = puerto;
let deviceId = _deviceId;
console.log("Agrego una impresora");
let myPrinter = new EpsonPrinter(ipAddress);
myPrinter.port = port;
myPrinter.deviceId = deviceId;
myPrinter.id = idImpresora;
console.log('Id impresora antes de connect es: ' + idImpresora);
myPrinter.connect();
this.printers[this.cantidad] = myPrinter;
this.cantidad ++;
}
imprimirPruebaJS(idImpresora) {
let printer = null;
let printerTemp = null
for(var i = 0; i < this.printers.length; i++) {
printerTemp = this.printers[i];
if (printerTemp.id == idImpresora) {
printer = printerTemp.printer;
}
}
if (printer == null) {
console.log("La impresora no esta iniciada en clase myPrinters");
return;
}
printer.addText('Hola mundo texto normal\n');
printer.addFeed();
printer.addCut(printer.CUT_FEED);
}
}
call myPrinters class in this way :
myEpsonPrinters = new myPrinters();
myEpsonPrinters.inicializarConeccionImpresora(1, '192.168.0.51', 8008, 'local_printer');
myEpsonPrinters.inicializarConeccionImpresora(2, '192.168.0.52', 8008, 'local_printer');
myEpsonPrinters.imprimirPruebaJS(1)
or
myEpsonPrinters.imprimirPruebaJS(2)
Test it and tell me.
Juan
Just create multiple objects for printing simple as this
this.eposdev = [];
let printersCnt = 3;
let self = this;
for(let i=1 ; i <= printersCnt ; i++){
this.eposdev[i] = new window.epson.ePOSDevice()
this.eposdev[i].onreconnecting = function (){
this.consoleLog('reConnecting')
}
this.eposdev[i].onreconnect = function (){
this.consoleLog('onReconnect')
}
this.eposdev[i].ondisconnect = function (){
this.consoleLog('onDisconnect')
}
}
function connect(printerKey) => {
this.consoleLog('connect')
this.eposdev.ondisconnect = null
this.eposdev.disconnect()
this.eposdev.connect(self.ipAddress[printerKey], self.port[printerKey], function(){
clearInterval(self.intervalID)
self.intervalID = null
self.eposdev[i].ondisconnect = self.ondisconnect
if (data === 'OK' || data === 'SSL_CONNECT_OK') {
console.log('create device, try: ' + self.restry)
const options = {
crypto: self.crypto,
buffer: self.buffer
}
self.eposdev[printerKey].createDevice(self.deviceId, self.eposdev[printerKey].DEVICE_TYPE_PRINTER, options, function(deviceObj, code){
this.restry++
if (code === 'OK') {
self.printer[printerKey] = deviceObj
self.printer.onreceive = function(){
console.log("onreceive");
}
} else if (code === 'DEVICE_IN_USE') {
if (self.restry < 5) {
setTimeout(() => self.createDevice(printerKey), 3000)
}
})
}
} else {
setTimeout(() => self.reconnect(printerKey), 5000)
}
})
}
Epson says that with version 2.12.0 you can add more than one printer.
I use GORM to back occurrences in a database, from an excel file.
new ExcelBuilder(excelFile.inputStream).eachLine([labels: true, sheet: 0]) {
if (cell(0)) {
def nameA = cell(0)
def nameB = cell(1)
def a = Chapitre.findByNom(nameA)
def code = cell(2)
def designation = cell(3)
if (code == null || nameA == null || nameB == null) {
flash.messages << "error"
} else if (!Chapitre.findByNom(nameA)) {
flash.messages << "error"
} else if ( Rubrique.where{nom == nameB && chapitre == a}.list().size() == 0) {
flash.messages << "error"
} else if(Object.where{rubrique == Rubrique.findByNom(nameB) && c == code && d == designation}.count() > 0){
flash.messages << "error"
} else {
def b = Rubrique.findByNom(nameB)
def isNew = false;
Object.withNewSession {session2->
def object = Object.findOrCreateByCode(code)
if(object.designation == null)
isNew = true;
object.rubrique = b
object.d= (designation == null)?"":designation
// try {
rowCount += object.save()? 1 : 0
// } catch(ValidationException) {
// if(isNew)
// rowCount++;
// log.info("ErreuRRRRRRRRrrrRRrrRrRRrrrrRrrrRrrrRrrrr")
// }
}
}
}
currentLine++
}
flash.messages << "${rowCount} ligne create or update"
An update will break any worries, the course of the lines of file continue and database recording is effective.
However when it comes to inserting a new object, I get an Exception:
org.springframework.dao.DuplicateKeyException: a different object with the same identifier value was already associated with the session:[fen.NuisanceType#2202];
nested exception is org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session
The registration of the object in question is effective , but the error raised off the path of the file.
When i uncommented the try and catch I bypasses the error and so all my copies of each file are created in the database .
I thus found a way around my worries, but I do not find it very clean and i come to you to try to understand my problem.
Without further information hard to give any clear answers. Is this code back in a service?(very much doubt it since it has flash.message pointing to controller doing all of it.) Try making it into a service and transactional then maybe you could look at removing withNewTransaction call.
You can read more about error created here:
Grails - DuplicateKeyException
Review comment:
"Well, that problem occurs when you are initializing a class new ClassD with an id or unique property manually, when there is another already in the session. So, you should try to get that entity first (that's what findOrCreateWhere does, but if you use an id you need to use get) and then use the instance found or create a new one for the update"
Hibernate Error: a different object with the same identifier value was already associated with the session
You code tidied up and running from service: (issues may go away) since I have also cleaned up the duplicated finds you were doing:
class TestService {
static transactional=true
def saveRecord() {
def results=[]
new ExcelBuilder(excelFile.inputStream).eachLine([labels: true, sheet: 0]) {
if (cell(0)) {
def nameA = cell(0)
def nameB = cell(1)
def code = cell(2)
def designation = cell(3)
def a = Chapitre.findByNom(nameA)
def b = Rubrique.where{nom == nameB && chapitre == a}
def c = Object.where{rubrique == b && c == code && d == designation}
if (!code||!nameA||!nameB||!a||!b||!c) {
results << "Error saving ${nameA} ${nameB} ${code}"
} else {
//boolean isNew = false
def object = Object.findOrSaveWhere(code:code)
if(object) {
if (!object.designation) {
rowCount++
results << "Record ${object} has no designation ? new Record?"
}
object.rubrique = b
object.d = designation ?: ''
object.save()
results << "Record ${object.id} is saved"
} else {
/*
* Could not save or find code:code now create a new object:
* object = new Object(code:code, rubrique:rubrique: d: designation ?: '').save()
*
*/
}
}
}
currentLine++
}
results << "${rowCount} ligne create or update"
return results
}
}
Looking at the Scala 2.10.0's implementation of LinearSeqOptimized#find in LinearSeqOptimized.scala, why is it necessary to call var these = this?
Why couldn't this simply be used?
override /*IterableLike*/
def find(p: A => Boolean): Option[A] = {
var these = this
while (!these.isEmpty) {
if (p(these.head)) return Some(these.head)
these = these.tail
}
None
}
Because you would have to have the same condition and operation out of the loop for this and then start using these.
It's much simpler to just put everyone in the same basket and do it all in the loop itself. Example:
def find(p: A => Boolean): Option[A] = {
if (!this.isEmpty && p(this.head)) {
return Some(this.head)
}
var these = this.tail
while (!these.isEmpty) {
if (p(these.head)) return Some(these.head)
these = these.tail
}
None
}
Not very smart, as you can see.
You could also easily implement this as a #tailrec operation:
#tailrec final def find[A](p : A => Boolean) : Option[A] = {
if ( this.isEmpty ) {
None
} else {
if ( p(this.head) ) {
Some(this.head)
} else {
this.tail.find(p)
}
}
}
And it isn't done like this in Scala because tailrec calls have to be final or private.
I have documents with field xyz containing
{ term: "puppies", page: { skip: 1, per_page: 20 } } // not useful as a composite key...
{ page: { skip: 1, per_page: 20 }, term: "puppies" } // different order, same contents
For the sake of determining the "top" values in xyz, I want to map them all to something like
emit('term="puppies",page={ skip: 1, per_page: 20 }', 1); // composite key
but I can't get the embedded objects into a meaningful strings:
emit('term="puppies",page=[object bson_object]', 1); // not useful
Any suggestions for a function to use instead of toString()?
# return the top <num> values of <field> based on a query <selector>
#
# example: top(10, :xyz, {}, {})
def top(num, field, selector, opts = {})
m = ::BSON::Code.new <<-EOS
function() {
var keys = [];
for (var key in this.#{field}) {
keys.push(key);
}
keys.sort ();
var sortedKeyValuePairs = [];
for (i in keys) {
var key = keys[i];
var value = this.#{field}[key];
if (value.constructor.name == 'String') {
var stringifiedValue = value;
} else if (value.constructor.name == 'bson_object') {
// this just says "[object bson_object]" which is not useful
var stringifiedValue = value.toString();
} else {
var stringifiedValue = value.toString();
}
sortedKeyValuePairs.push([key, stringifiedValue].join('='));
}
// hopefully we'll end up with something like
// emit("term=puppies,page={skip:1, per_page:20}")
// instead of
// emit("term=puppies,page=[object bson_object]")
emit(sortedKeyValuePairs.join(','), 1);
}
EOS
r = ::BSON::Code.new <<-EOS
function(k, vals) {
var sum=0;
for (var i in vals) sum += vals[i];
return sum;
}
EOS
docs = []
collection.map_reduce(m, r, opts.merge(:query => selector)).find({}, :limit => num, :sort => [['value', ::Mongo::DESCENDING]]).each do |doc|
docs.push doc
end
docs
end
Given that MongoDB uses SpiderMonkey as its internal JS engine, can't you use JSON.stringify (will work even if/when MongoDB switches to V8) or SpiderMonkey's non-standard toSource method?
(sorry, can't try it ATM to confirm it'd work)
toSource method will do the work, but it adds also brackets.
for a clean document use:
value.toSource().substring(1, value.toSource().length - 1)