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[DOCS] Add more examples to Painless statements #48397

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jdconrad merged 2 commits into from
May 11, 2020
Merged

[DOCS] Add more examples to Painless statements #48397

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cd0029e
Add more examples to Painless statements
renshuki Oct 23, 2019
6eba8bf
Update titles for Painless statements doc
renshuki Dec 12, 2019
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21 changes: 20 additions & 1 deletion docs/painless/painless-lang-spec/painless-statements.asciidoc
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ control flow statements] except the `switch` statement.
---------------------------------------------------------
if (doc[item].size() == 0) {
// do something if "item" is missing
} else if (doc[item].value == 'something') {
// do something if "item" value is: something
} else {
// do something else
}
Expand All @@ -26,6 +28,23 @@ Painless also supports the `for in` syntax from Groovy:
[source,painless]
---------------------------------------------------------
for (item : list) {
...
// do something
}
---------------------------------------------------------

===== While
[source,painless]
---------------------------------------------------------
while (ctx._source.item < condition) {
// do something
}
---------------------------------------------------------

===== Do-While
[source,painless]
---------------------------------------------------------
do {
// something
}
while (ctx._source.item < condition)
---------------------------------------------------------