I have the following collection in mongo:
{
"_id" : ObjectId("506217890b50f300d020d237"),
"o_orderkey" : NumberLong(1),
"o_orderstatus" : "O",
"o_totalprice" : 173665.47,
"o_orderdate" : ISODate("1996-01-02T02:00:00Z"),
"o_orderpriority" : "5-LOW",
"o_clerk" : "Clerk#000000951",
"o_shippriority" : 0,
"o_comment" : "blithely final dolphins solve-- blithely blithe packages nag blith",
"customer" : {
"c_custkey" : NumberLong(36901),
"c_name" : "Customer#000036901",
"c_address" : "TBb1yDZcf 8Zepk7apFJ",
"c_phone" : "23-644-998-4944",
"c_acctbal" : 4809.84,
"c_mktsegment" : "AUTOMOBILE",
"c_comment" : "regular accounts after the blithely pending dependencies play blith",
"c_nationkey" : {
"n_nationkey" : NumberLong(13),
"n_name" : "JORDAN",
"n_comment" : "blithe, express deposits boost carefully busy accounts. furiously pending depos",
"n_regioin" : {
"r_regionkey" : NumberLong(4),
"r_name" : "MIDDLE EAST",
"r_comment" : "furiously unusual packages use carefully above the unusual, exp"
}
}
},
"o_lineitem" : [
{
"l_linenumber" : 1,
"l_quantity" : 17,
"l_extendedprice" : 21168.23,
"l_discount" : 0.04,
"l_tax" : 0.02,
"l_returnflag" : "N",
"l_linestatus" : "O",
"l_shipdate" : ISODate("1996-03-13T03:00:00Z"),
"l_commitdate" : ISODate("1996-02-12T03:00:00Z"),
"l_receiptdate" : ISODate("1996-03-22T03:00:00Z"),
"l_shipinstruct" : "DELIVER IN PERSON",
"l_shipmode" : "TRUCK",
"l_comment" : "blithely regular ideas caj",
"partsupp" : {
"ps_availqty" : 6157,
"ps_supplycost" : 719.17,
"ps_comment" : "blithely ironic packages haggle quickly silent platelets. silent packages must have to nod. slyly special theodolites along the blithely ironic packages nag above the furiously pending acc",
"ps_partkey" : {
"p_partkey" : NumberLong(155190),
"p_name" : "slate lavender tan lime lawn",
"p_mfgr" : "Manufacturer#4",
"p_brand" : "Brand#44",
"p_type" : "PROMO BRUSHED NICKEL",
"p_size" : 9,
"p_container" : "JUMBO JAR",
"p_retailprice" : 1245.19,
"p_comment" : "regular, final dol"
},
"ps_suppkey" : {
"s_suppkey" : NumberLong(7706),
"s_name" : "Supplier#000007706",
"s_address" : "BlHq75VoMNCoU380SGiS9fTWbGpeI",
"s_phone" : "33-481-218-6643",
"s_acctbal" : -379.71,
"s_comment" : "carefully pending ideas after the instructions are alongside of the dolphins. slyly pe",
"s_nationkey" : {
"n_nationkey" : NumberLong(23),
"n_name" : "UNITED KINGDOM",
"n_comment" : "fluffily regular pinto beans breach according to the ironic dolph",
"n_regioin" : {
"r_regionkey" : NumberLong(3),
"r_name" : "EUROPE",
"r_comment" : "special, bold deposits haggle foxes. platelet"
}
}
}
}
},
.
.
.
]
}
And im trying to translate the following sql query:
select
s_acctbal,
s_name,
n_name,
p_partkey,
p_mfgr,
s_address,
s_phone,
s_comment
from
part,
supplier,
partsupp,
nation,
region
where
p_partkey = ps_partkey
and s_suppkey = ps_suppkey
and p_size = 15
and p_type like '%BRASS'
and s_nationkey = n_nationkey
and n_regionkey = r_regionkey
and r_name = 'EUROPE'
and ps_supplycost = (
select
min(ps_supplycost)
from
partsupp, supplier,
nation, region
where
p_partkey = ps_partkey
and s_suppkey = ps_suppkey
and s_nationkey = n_nationkey
and n_regionkey = r_regionkey
and r_name = 'EUROPE'
)
order by
s_acctbal desc,
n_name,
s_name,
p_partkey;
My function that i was trying:
db.runCommand({
mapreduce: "ordersfull",
query: {
},
map: function Map() {
var pattern = /BRASS$/g;
for(var i in this.o_lineitem){
var p_size = this.o_lineitem[i].partsupp.ps_partkey.p_size;
var p_type = this.o_lineitem[i].partsupp.ps_partkey.p_type;
var region = this.o_lineitem[i].partsupp.ps_suppkey.s_nationkey.n_regioin.r_name;
if(p_size==15 && p_type.match(pattern)!=null && region == "EUROPE"){
emit("",{
s_acctbal: this.o_lineitem[i].partsupp.ps_suppkey.s_acctbal,
s_name: this.o_lineitem[i].partsupp.ps_suppkey.s_name,
n_name: this.o_lineitem[i].partsupp.ps_suppkey.s_nationkey.n_name,
p_partkey: this.o_lineitem[i].partsupp.ps_partkey.p_partkey,
p_mfgr: this.o_lineitem[i].partsupp.ps_partkey.p_mfgr,
s_address: this.o_lineitem[i].partsupp.ps_suppkey.s_address,
s_phone: this.o_lineitem[i].partsupp.ps_suppkey.s_phone,
s_comment: this.o_lineitem[i].partsupp.ps_suppkey.s_comment
} );
}
}
},
reduce: function(key, values) {
},
out: 'query002'
});
In my result i got null value for all entries, what happen?
You can debug your MapReduce output by including print() or printjson() statements in the JavaScript functions. The resulting print output will be saved in your MongoDB log.
There are several issues with your MapReduce:
the for .. in loop will not work as you expect .. you should instead use array.forEach(..)
if you are iterating an array, you will already have a reference to the array item and should not use array[index]
you should emit() with a unique key name if you don't want unexpected grouping
your reduce() should return a value matching the structure of the emitted data
you should ideally use a query parameter to limit the documents that need to be inspected
Given you appear to just be iterating documents without doing any grouping or reduce(), you may find it easier to fetch the documents and perform the same matching in your application code.
In any case, the map() function should actually look more like:
var map = function () {
var pattern = /BRASS$/;
this.o_lineitem.forEach(function(item) {
var partKey = item.partsupp.ps_partkey;
var suppKey = item.partsupp.ps_suppkey;
var region = suppKey.s_nationkey.n_regioin.r_name;
if (partKey.p_size==15 && partKey.p_type.match(pattern) !=null && region == "EUROPE") {
emit(suppKey.s_name,
{
s_acctbal: suppKey.s_acctbal,
s_name: suppKey.s_name,
n_name: suppKey.s_nationkey.n_name,
p_partkey: partKey.p_partkey,
p_mfgr: partKey.p_mfgr,
s_address: suppKey.s_address,
s_phone: suppKey.s_phone,
s_comment: suppKey.s_comment
}
);
}
})
}
It would be easier to translate this query into the new Aggregation Framework in MongoDB 2.2, given your data structure and the desired multiple matching and sorting.
There are some current limitations to be aware of (such as the present 16MB maximum on output from the Aggregation pipeline), but you will likely find the queries easier to create and debug.
Here is a commented example using the Aggregation Framework, including initial match criteria for order status, date, and part/supplier items of interest:
db.ordersfull.aggregate(
// Find matching documents first (can take advantage of index)
{ $match: {
o_orderstatus: 'O',
o_orderdate: { $gte: new ISODate('2012-10-01') },
$and: [
{ o_lineitem: { $elemMatch: { 'partsupp.ps_partkey.p_size': 15 }} },
{ o_lineitem: { $elemMatch: { 'partsupp.ps_partkey.p_type': { $exists : true } }} },
{ o_lineitem: { $elemMatch: { 'partsupp.ps_suppkey.s_nationkey.n_regioin.r_name': 'EUROPE'}} }
]
}},
// Filter to fields of interest
{ $project: {
_id: 0,
o_lineitem: 1
}},
// Convert line item arrays into document stream
{ $unwind: '$o_lineitem' },
// Match desired line items
{ $match: {
'o_lineitem.partsupp.ps_partkey.p_size': 15,
'o_lineitem.partsupp.ps_partkey.p_type': /BRASS$/,
'o_lineitem.partsupp.ps_suppkey.s_nationkey.n_regioin.r_name': 'EUROPE'
}},
// Final field selection
{ $project: {
s_acctbal: '$o_lineitem.partsupp.ps_suppkey.s_acctbal',
s_name: '$o_lineitem.partsupp.ps_suppkey.s_name',
n_name: '$o_lineitem.partsupp.ps_suppkey.s_nationkey.n_name',
p_partkey: '$o_lineitem.partsupp.ps_partkey.p_partkey',
p_mfgr: '$o_lineitem.partsupp.ps_partkey.p_mfgr',
s_address: '$o_lineitem.partsupp.ps_suppkey.s_address',
s_phone: '$o_lineitem.partsupp.ps_suppkey.s_phone',
s_comment: '$o_lineitem.partsupp.ps_suppkey.s_comment'
}},
// Sort the output
{ $sort: {
s_acctbal: -1,
n_name: 1,
s_name: 1,
p_partkey: 1
}}
)
Related
I have a requirement when PhoneNumber and emailID are passed as search parameters together and I have to query mongoDB for condition like shown below
Where (PhoneNumber = "primaryPhoneNumber" or "SecondaryPhoneNumber") and (emailId= "primaryEmailid" or "secondaryEmailID")
SO when I am trying to frame my Query somewhat like below I am getting the exception-
**
Due to limitations of the com.mongodb.BasicDocument, you can't add a second '' criteria. Query already contains '{ "$or" : [{ "createdByEmailId" : "brokermanager_lion#perfios.com"}, { "clientRM" : { "$in" : ["brokermanager_lion#perfios.com"]}}, { "productRM" : { "$in" : ["brokermanager_lion#perfios.com"]}}]}'**
`
if (StringUtils.isNotBlank(leadsFilters.getPhoneNumber())) {
Criteria andCriteria = new Criteria();
query.addCriteria(andCriteria.andOperator(Criteria.where("")
.orOperator(Criteria.where("userInfo.primaryMobileNumber").is(leadsFilters.getPhoneNumber()),
Criteria.where("userInfo.secondaryMobileNumber").is(leadsFilters.getPhoneNumber()))));
}
query.addCriteria(Criteria.where("lspCode").is(lspCode));
if (StringUtils.isNotBlank(leadsFilters.getEmailId())) {
Criteria andEmailCriteria = new Criteria();
query.addCriteria(Criteria.where("").
orOperator(Criteria.where("userInfo.primaryEmailId").is(leadsFilters.getEmailId()),
Criteria.where("userInfo.secondaryEmailId").is(leadsFilters.getEmailId())));
}
`
i want to display related data on react native, i have 2 response api
response 1
{
"total": 2,
"data" : [
{
"date" : "2020-12-01",
"time" : "08:00:00"
},
{
"date" : "2020-12-02",
"time" : "09:00:00"
}
]
}
response 2, date is parameter
date : 2020-12-01
{
"total": 2,
"data" : [
{
"date" : "2020-12-01",
"description" : "bla bla bla"
},
{
"date" : "2020-12-01",
"description" : "vla vla vla"
}
]
}
date : 2020-12-02
{
"total": 1,
"data" : [
{
"date" : "2020-12-02",
"description" : "cla cla cla"
}
]
}
how to use promises on fetch and how components return them,
so it can display content descriptions like this
Are you asking how to use promises with Fetch? Or how to take the results of those promises and use them to create a visual component?
It doesn't look like you've put any work into asking this question and it's quite wide ranging, from setting up components, creating fetch requests to an API and formatting them into visual components.
I'd consider starting here for your fetch request:
https://reactnative.dev/docs/network#making-requests
Then look at how they take the text and place it on a screen here:
https://reactnative.dev/docs/network#making-requests
EDIT:
Per the comments below.
You would most likely want to store the results of your request in some form of local state, and pass that state to your FlatList or similar, for instance:
const PromiseExample = () => {
const [listItems, setListItems] = useState([])
useEffect(() => {
async function fetchData() {
const data = await fetch('localhost:3000/data').json()
const otherData = await fetch('localhost:3000/otherData').json()
let joinedData = []
// at this point you would join your two data structures in whatever way you need to and push the joined data to the var.
setListItems(joinedData)
}
}, [])
return (
<FlatList data={listItems} />
)
}
I'm trying to have 2 datatables on one page.
I'm not initializing them in one function call, however.
I'm initializing them in separate function calls.
I've made a javascript function that looks like this:
function initialize_datatable(args) {
generate_footer(args.table_selector);
$(args.table_selector).DataTable({
columns: args.columns,
order: args.order,
scrollX: true,
...
...
Is it not possible to call this method twice?
Do I need to consolidate multiple tables into one .DataTable() initialization? E.g. $('#table-one #table-two #table-three').DataTable()?
Whenever I try to make two separate calls to .DataTable() I get the following error:
Uncaught TypeError: Cannot set property 'nTf' of undefined. If you Google this error it says this error occurs because you have a differing number of elements in your header and footer. I have counted my <th> elements in my header footer, they are the same number.
I can initialize one table, or the other, but not both at the same time, so I know it's an issue with making multiple calls to .DataTable()
This is the full definition of initialize_datatable:
function initialize_datatable(args) {
generate_footer(args.table_selector);
$(args.table_selector).DataTable({
columns: args.columns,
order: args.order,
scrollX: true,
sScrollXInner: "100%",
dom: "Blfrtip",
buttons: [
{
extend : 'copyHtml5',
title : args.title,
sheetName : args.title,
footer : true,
exportOptions: {
columns: ':visible'
}
},
{
extend : 'excelHtml5',
footer : true,
title : args.title,
sheetName : args.title,
exportOptions: {
columns: ':visible'
}
},
{
extend : 'csvHtml5',
title : args.title,
sheetName : args.title,
footer : true,
exportOptions: {
columns: ':visible'
}
},
{
extend : 'print',
text : 'Print',
title : args.title,
sheetName : args.title,
autoPrint : true,
footer : true,
stripHtml : false,
exportOptions: {
columns: ':visible',
}
}
],
drawCallback: function () {
let api = this.api();
// hide columns that add up to 0
api.columns().every(function (i) {
let sum = this.data().sum();
if (sum === 0 && typeof sum === 'number' && i !== 0) {
api.column(i).visible(0);
}
});
},
footerCallback: function (row, data, start, end, display) {
let api = this.api()
intVal = function (i) {
return typeof i === 'string' ?
i.replace(/[\$,]/g, '')*1 :
typeof i === 'number' ?
i : 0;
}
api.columns({page: 'current'}).every(function (i) {
let columnTotal = this.data().reduce(function (a, b) {
return intVal(a) + intVal(b);
}, 0);
if (!isNaN(columnTotal)) {
columnTotal = Intl.NumberFormat('en-US', {style: 'currency', currency: 'USD'}).format(columnTotal);
$(this.footer()).html(columnTotal);
}
})
}
});
}
I'm attempting to get all defects for a specific portfolio item, in priority order, using the sort config of the SnapshotStore datastore, but its not working. Am I going about this the wrong way?
getSnapshots : function(record, doneCallback) {
app.log("getDefectSnapshots"+record.get("ObjectID"));
var that = this;
var fetch = ['ObjectID','FormattedID','_UnformattedID','Name','State','Priority','Severity','_ItemHierarchy','_TypeHierarchy'];
var hydrate = ['_TypeHierarchy','_ItemHierarchy','State','Priority','Severity', 'Project'];
var find = {
'_TypeHierarchy' : { "$in" : ["Defect"]},
'_ProjectHierarchy' : { "$in": app.currentProject.ObjectID },
'__At' : 'current',
"_ItemHierarchy" : { "$in" : record.get("ObjectID") }
};
var storeConfig = {
autoLoad : true,
fetch: fetch,
find : find,
hydrate: hydrate,
sort: {'Priority':1},
limit: 'Infinity',
listeners : {
scope : this,
load: function(store, snapshots, success) {
app.log("completed snapshots:", snapshots.length);
doneCallback(null,snapshots);
}
},
pageSize:1000
};
var snapshotStore = Ext.create('Rally.data.lookback.SnapshotStore', storeConfig);
},
What order are you getting them back in? (I believe) it's sorting Priority by the OIDs value, not the hydrated string value or the ordinal value (order it appears in the dropdowns). The OID order may or may not be the same as the ordinal order though - but that would just be luck. But, it sounds like you're not getting lucky that way.
I'm trying to create a status bar with clock.
I found example in sencha examples, but I'm trying to build it more object oriented way.
Ext.define('Urlopy.Components.Statusbar', {
extend : 'Ext.ux.statusbar.StatusBar',
id : 'basic-statusbar',
defaultText : 'Wczytane...',
defaultIconCls : 'x-status-valid',
iconCls : 'x-status-valid',
autoClear : 3000,
initComponent : function() {
this.currentUserDisplay = Ext.create('Ext.toolbar.TextItem');
this.currentUserDisplay.setText('Not logged in!');
this.timeDisplay = Ext.create('Ext.toolbar.TextItem');
this.timeDisplay.setText(Ext.Date.format(new Date(), 'Y-m-d H:i:s'));
Ext.apply(this, {
items : [this.currentUserDisplay, {
xtype : 'tbseparator'
}, this.timeDisplay],
listeners : {
render : {
fn : function() {
Ext.TaskManager.start({
run : function() {
this.timeDisplay.setText(Ext.Date.format(new Date(),'Y-m-d H:i:s'));
},
interval : 1000
});
},
delay : 100
}
}
});
this.callParent();
},
setCurrentUser : function(username) {
this.currentUserDisplay.setText('Logged as' + ": " + username);
},
startLoad : function(message) {
if (message !== null) {
this.showBusy({
text : message,
iconCls : "x-status-busy"
});
} else {
this.showBusy();
}
},
endLoad : function() {
this.clearStatus({
useDefaults : true
});
}
});
The first time component shows it displays date and time correct, but it doesn't update.
Problem is probably TaskManager or my listeners.
Instead of them I've tried doing this:
initComponent : function() {
this.currentUserDisplay = Ext.create("Ext.toolbar.TextItem");
this.currentUserDisplay.setText('Nie jesteś zalogowany!');
this.timeDisplay = Ext.create("Ext.toolbar.TextItem");
this.timeDisplay.setText(Ext.Date.format(new Date(), "Y-m-d H:i:s"));
Ext.apply(this, {
items : [this.currentUserDisplay, {
xtype : 'tbseparator'
}, this.timeDisplay]
});
this.callParent();
var task = {
run : function() {
this.timeDisplay.setText(Ext.Date.format(new Date(), "Y-m-d H:i:s"));
},
interval : 1000
}
Ext.TaskManager.start(task);
},
but no luck :(
I know that this is probably a tiny mistake, but can't find it.
What you have is a scope issue, this in your run function doesn't point to the status bar. you need to add a scope: this after the interval.
see example http://jsfiddle.net/nscrob/kR9ev/17/