MVEL is a powerful expression language for Java-based applications.
MVEL is a powerful expression language for Java-based applications.
Questions tagged [mvel]
192 questions
4
votes
1 answer
Error translating mvel script to groovy
While preparing for an update to elasticsearch 2.0, I noticed mvel scripting is being deprecated in favor of groovy. My problem is that I am new to groovy and don't know how to fix this error.
boolean engineTest = false; if (!engineTest) {…
Danny
- 77
- 4
4
votes
2 answers
Optional Parameter in MVEL Functions
Is there a way to get MVEL 2.0 ( http://mvel.codehaus.org/ ) to work with functions with optional parameters?
I would like to be able to eval this:
trunc('blahblah',2)
but also
trunc('blahblah',2,'[...]');
Now i have tried:
def…
JP-Ulm
- 161
- 1
- 2
- 6
4
votes
1 answer
Drools: Differences between the mvel and java dialects
As a newbie to Drools, I'm confused about the differences between the mvel and java dialects and the relative pros and cons of using either.
After some initial research, I came across some discussions here, and here.
What other differences are…
dshgna
- 790
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4
votes
1 answer
Mvel iterate a list
I have this class hierarchy
StudentClass .java
public class StudentClass {
private List studentList;
public List getStudentList() {
return studentList;
}
public void setStudentList(List…
Ankur Singhal
- 23,626
- 10
- 70
- 108
4
votes
2 answers
ElasticSearch Get Time in Groovy Script
My application is using this script for boosting more recent items in the index:
(5 / ((3.16*pow(10,-11)) * abs(time() - doc[\'date\'].date.getMillis()) + 0.2)) + 1.0
It's written in MVEL, but as of 1.3, MVEL is deprecated for Groovy. The script…
Jonah
- 9,535
- 5
- 39
- 74
4
votes
1 answer
Boolean value scripting issue with MVEL and Elasticsearch
I have a field mapping defined as
{"top_seller":{"type":"boolean"}}
In my query, I'm trying to do a custom score query based on the boolean value. I'm pulling my hair out. Every time I run a script such as this:
return…
J.T.
- 2,596
- 12
- 30
4
votes
1 answer
How do I get the count/size of an array in elasticsearch
I want to do a statistical facet on one of my arrays. I hope something like
"script" : "doc['myField'].doubleValue
or
"script" : "doc['myField'].count
would work. I havent found any array count method in mvel and I don't even know if accessing the…
Alden
- 272
- 4
- 12
3
votes
1 answer
How to parse the templated sentence "#{name} invited you" using expression language
I am a new bee to Java.
My intension is to use the template like sentences in Java program (no JSP or any web related pages)
Example:
String name = "Jon";
"#{ name } invited you";
or
String user.name = "Jon";
"#{ user.name } invited…
Jon
- 2,495
- 3
- 14
- 14
3
votes
0 answers
Mvel expression compilation passes but evaluation fails
I'm using Mvel API mvel2 2.4.4.Final to write some rule based logic's in my java web application.
I have list of Mvel Expressions which should be compiled before I use them in real operations to avoid any invalid expression problems while client…
jiboOne
- 541
- 5
- 18
3
votes
3 answers
Create a array in mvel expression and check if variable exists in array
I have a variable having some numeric value x = 5;.
I want to right an expression like:
if arr = [4,7,10] contains x in mvel.
Is that possible, if yes, how ?
As of now I will have to right expression as :
x == 4 || x == 7 || x == 10
but since i may…
GP007
- 601
- 1
- 8
- 22
3
votes
1 answer
How to pass arguments to a function written inside an MVEL expression?
I have a JAVA class that has two methods. The first one is the main method and the second one is method1().
Let's say the following is the class:
public class SomeClass() {
public static void main(String[] args) {
SomeClass myObj = new…
Anuj
- 87
- 1
- 9
3
votes
2 answers
How to do a minus operation on time-stamps in elasticsearch?
I have some server logs dumped into elasticsearch. The logs contain entries like 'action_id':'AU11nP1mYXS3pt6INMtU','action':'start','time':'March 31st 2015, 19:42:07.121' and 'action_id':'AU11nP1mYXS3pt6INMtU','action':'complete','time':'March 31st…
lingxiao
- 1,106
- 12
- 29
3
votes
2 answers
Extract all particular field from JSON in mule esb
I have this json payload, I would want to collect all externalListingId in one shot -
{
"listings": {
"numFound": 3,
"listing": [
{
"status": "INACTIVE",
"pricePerTicket": {
"amount": 100,
…
user3483129
- 137
- 5
- 17
3
votes
2 answers
Mvel evaluation
Problem Statement: Say I have a expression (a + b + c), and I want to calculate its value and assign to some variable. Later I want use that variable value in some other logic. This is all done through MVEL. Issue is if anyone out of (a,b,c) is…
Ankur Singhal
- 23,626
- 10
- 70
- 108
3
votes
1 answer
Calculating Distance on a MultiValueField Location
In my ElasticSearch index, location is a MultiValueField. When I write a custom scoring formula for my documents involving location, I want the script to pick up on whichever location is the closest to the point in my query.
So, I have this part of…
ajyang818
- 485
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