Is it possible to know with JSONPath that other "paths" exist?
By an existing "path" I mean a string in the form "a.b.c" or "a.b.d" like for this JSON:
{
'a' : {
'b' : [ { 'c' : 0 }, { 'd': 1 ]
}
}
Can a JSONPath be written to tell if there any other "paths" other then a.b.c and a.b.d ?
For example in the following JSON, it should find that there is the property 'e':
{
'a' : {
'b' : [ { 'c' : 0 }, { 'd': 1 ],
'e': 2
}
}
It depends on JSONPath Implementation. The jsonpath options have a setting to output the path or value.
JSONPATH
$..*
All possible Output Paths
[
"$['a']",
"$['a']['b']",
"$['a']['e']",
"$['a']['b'][0]",
"$['a']['b'][1]",
"$['a']['b'][0]['c']",
"$['a']['b'][1]['d']"
]
Tool : https://jsonpath.com/
Checkbox Option : Output paths
Tool : https://jsonpath.herokuapp.com/
Checkbox option : Normalized path expressions
Related
What is the correct way to add tuple and key-pair values items to a DynamoDB database via Terraform?
I am trying like this:
resource "aws_dynamodb_table_item" "item" {
table_name = aws_dynamodb_table.dynamodb-table.name
hash_key = aws_dynamodb_table.dynamodb-table.hash_key
for_each = {
"0" = {
location = "Madrid"
coordinates = [["lat", "40.49"], ["lng", "-3.56"]]
visible = false
destinations = [0, 4]
}
}
item = <<ITEM
{
"id": { "N": "${each.key}"},
"location": {"S" : "${each.value.location}"},
"visible": {"B" : "${each.value.visible}"},
"destinations": {"L" : [{"N": "${each.value.destinations}"}]
}
ITEM
}
And I am getting the message:
each.value.destinations is tuple with 2 elements
│
│ Cannot include the given value in a string template: string required.
I also have no clue on how to add the coordinates variable.
Thanks!
List should be something like that :
"destinations": {"L": [{ "N" : 1 }, { "N" : 2 }]}
You are trying to pass
"destinations": {"L": [{ "N" : [0,4] }]}
Also you are missing the last } in destinations key
TLDR: I think the problem here is that you are trying to put L(N) - i.e. a list of numeric values, while your current Terraform code tries to put all the destinations into one N/number.
Instead of:
[{"N": "${each.value.destinations}"}]
you need some iteration over destinations and building a {"N": ...} of them.
"destinations": {"NS": ${jsonencode(each.value.destinations)}}
Did the trick!
I've got an Image Collection like:
ImageCollection : {
features : [
0 : {
type: Image,
id: MODIS/006/MOD11A1/2019_01_01,
properties : {
LST_Day_1km : 12345,
LST_Night_1km : 11223,
system:index : "2019-01-01",
system:asset_size: 764884189,
system:footprint: LinearRing,
system:time_end: 1546387200000,
system:time_start: 1546300800000
},
1 : { ... }
2 : { ... }
...
],
...
]
From this collection, how can I get an array of objects of specific properties? Like:
[
{
LST_Day_1km : 12345,
LST_Night_1km : 11223,
system:index : "2019-01-01"
},
{
LST_Day_1km : null,
LST_Night_1km : 11223,
system:index : "2019-01-02"
}
...
];
I tried ImageCollection.aggregate_array(property) but it allows only one parameter at one time.
The problem is that the length of "LST_Day_1km" is different from the length of "system:index" because "LST_Day_1km" includes empty values, so it's hard to combine arrays after get them separately.
Thanks in advance!
Whenever you want to extract data from a collection in Earth Engine, it is often a straightforward and efficient strategy to first arrange for the data to be present as a single property on the features/images of that collection, using map.
var wanted = ['LST_Day_1km', 'LST_Night_1km', 'system:index'];
var augmented = imageCollection.map(function (image) {
return image.set('dict', image.toDictionary(wanted));
});
Then, as you're already familiar with, just use aggregate_array to extract that property's values:
var list = augmented.aggregate_array('dict');
print(list);
Runnable complete example:
var imageCollection = ee.ImageCollection('MODIS/006/MOD11A1')
.filterDate('2019-01-01', '2019-01-07')
.map(function (image) {
// Fake values to match the question
return image.set('LST_Day_1km', 1).set('LST_Night_1km', 2)
});
print(imageCollection);
// Add a single property whose value is a dictionary containing
// all the properties we want.
var wanted = ['LST_Day_1km', 'LST_Night_1km', 'system:index'];
var augmented = imageCollection.map(function (image) {
return image.set('dict', image.toDictionary(wanted));
});
print(augmented.first());
// Extract that property.
var list = augmented.aggregate_array('dict');
print(list);
https://code.earthengine.google.com/ffe444339d484823108e23241db04629
I'm passing a JSON object to jq and want to add extra objects to an inner array ('accessories') if its parent array ('platforms') matches a certain name.
Here's my source JSON:
{
"bridge": {
"name": "Homebridge",
"port": 51395
},
"accessories": [],
"platforms": [
{
"name": "Config",
"port": 8581,
"platform": "config"
},
{
"platform": "homebridge-cbus.CBus",
"name": "CBus",
"client_ip_address": "127.0.0.1",
"accessories": [
{
"values": "existing"
}
]
}
]
}
This works beautifully:
jq '.platforms[1].accessories += [{ "values" : "NEW" }]'
... but of course it's poor form to expect platforms[1] to always the be array I want to append to, so I set about trying to form the right syntax for a search or if/then/else to only act on the .name of the appropriate one.
I thought this was my solution:
jq '.platforms[] | if ( .name=="CBus" ) then .accessories += [{ "values" : "NEW" }] else . end'
... until I realised it was only passing the 'platforms' through and eating the 'bridge' object and empty outer 'accessories' array, which I need to retain.
My issue looks to be similar to JQ | Updating array element selected by `select`, but I've tried LOTS of combinations but just can't break through.
Edit: Here's the correct JQPlay I've been working with:
https://jqplay.org/s/dGDswqAEte
Thanks for any help.
That's a good attempt. The key here is to use the select() function to identify the object you are going to update and overwrite the overall array using |= operator, i.e.
.platforms |= ( map(select(.name == "CBus").accessories += [{ "values" : "NEW" }] ) )
For the snippet in your jq-play link (now removed), you need to do
.gcp_price_list."CP-COMPUTEENGINE-OS"
|= with_entries(select(.value.cores == "shared").value.cores = "0.5")
Or if you want to be even more specific, and keep the entry in gcp_price_list configurable, do
.gcp_price_list |=
with_entries (
select(.key == "CP-COMPUTEENGINE-OS").value |=
with_entries(
select(.value.cores == "shared").value.cores = "0.5") )
Given the following data structure:
{
"name" : "test",
"assetType" : "Home",
"value" : [
{
"value" : "999",
"date" : "10/03/2018"
},
{
"value" : "1234.56",
"date" : "10/04/2018"
}
]
}
How can I directly access the first and last element of value in Handlebars? My code is:
<td>{{value.[0].value}}</td>
<td>{{value.[value.length - 1].value}}</td>
The first statement works fine, but I cannot figure out how to access the last element. value.length inside the []'s does not return any value, but rendering value.length outside of the array works fine.
I tried using #first and #last in the array but those don't seem to work either.
As already pointed out, you can easily solve this with a template helper:
Template.myTemplate.helpers({
first (arr) {
return arr && arr[0]
},
last (arr) {
return arr && arr[arr.length - 1]
},
atIndex (arr, index) {
return arr && index >= 0 && index <= arr.length - 1 && arr[index]
}
})
You can then create a context using #with where the context object is the result of the helpers. Inside this context you can access properties using this.
Accessing values with the name value would look like the following:
<td>{{#with first value}}{{this.value}}{{/with}}</td>
<td>{{#with last value}}{{this.value}}{{/with}}</td>
<td>{{#with atIndex value 5}}{{this.value}}{{/with}}</td>
I'm trying to filter a query using range by date but it's not working. If i use gt, gte, lt, lte it returns zero results. If i use only gt or lt, it returns some results but the filter is not working.
I've checked datatype on uri http://mydomain.local:9200/logstash-2014.09.09/_mapping?pretty=true the field type is correct:
"original" : {
"type" : "date",
"format" : "dateOptionalTime"
}
Here is an example of a result that i have indexed in ElasticSearch:
{
"_index" : "logstash-2014.09.08",
"_type" : "iis",
"_id" : "wxtnfpyjR4u7dhwlEAWevw",
"_score" : 1.0,
"_source":{"#version":"1","#timestamp":"2014-09-08T20:55:46.460Z",
"type":"iis","original":"14-09-08 17:39:58"}
}
And here is how i'm trying to perform a query:
{
"query" : {
"filtered" : {
"filter" : {
"range" : {
"original" : {
"gt" : "14-09-10"
}
}
}
}
}
}
Anyone knows what is wrong on my query? Why it returns some results if i don't have any date greater than today ( 2014-09-09 )?
I created an index with the same mapping and tried to put a record in
curl -XPOST localhost:9200/test-1/x/_index -d '{"original": "14-09-08 17:39:58"}'
and got an error:
{"error":"MapperParsingException[failed to parse [original]]; nested: MapperParsingException[failed to parse date field [14-09-08 17:39:58], tried both date format [dateOptionalTime], and timestamp number with locale []]; nested: IllegalArgumentException[Invalid format: \"14-09-08 17:39:58\" is malformed at \" 17:39:58\"]; ","status":400}`
So I believe that you are in a a locale where that ##-##-## is being interpreted as something other than yy-mm-dd.
You are using Logstash so you can fix the original field before it goes in with a mutate to make it unambiguous.
mutate {
replace => { original => "20%{original}" }
}