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Changes instances of `[float]` in our docs for `[discrete]`. Asciidoctor prefers the `[discrete]` tag for floating headings: https://asciidoctor.org/docs/asciidoc-asciidoctor-diffs/#blocks
85 lines
2.1 KiB
Plaintext
85 lines
2.1 KiB
Plaintext
[[modules-scripting]]
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= Scripting
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[partintro]
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--
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With scripting, you can evaluate custom expressions in {es}. For example, you
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could use a script to return "script fields" as part of a search request or
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evaluate a custom score for a query.
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The default scripting language is <<modules-scripting-painless, `Painless`>>.
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Additional `lang` plugins enable you to run scripts written in other languages.
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Everywhere a script can be used, you can include a `lang` parameter
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to specify the language of the script.
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[discrete]
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== General-purpose languages
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These languages can be used for any purpose in the scripting APIs,
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and give the most flexibility.
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[cols="<,<,<",options="header",]
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|=======================================================================
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|Language
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|Sandboxed
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|Required plugin
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|<<modules-scripting-painless, `painless`>>
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|yes
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|built-in
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|=======================================================================
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[discrete]
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== Special-purpose languages
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These languages are less flexible, but typically have higher performance for
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certain tasks.
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[cols="<,<,<,<",options="header",]
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|=======================================================================
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|Language
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|Sandboxed
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|Required plugin
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|Purpose
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|<<modules-scripting-expression, `expression`>>
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|yes
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|built-in
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|fast custom ranking and sorting
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|<<search-template, `mustache`>>
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|yes
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|built-in
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|templates
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|<<modules-scripting-engine, `java`>>
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|n/a
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|you write it!
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|expert API
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|=======================================================================
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[WARNING]
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.Scripts and security
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=================================================
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Languages that are sandboxed are designed with security in mind. However, non-
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sandboxed languages can be a security issue, please read
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<<modules-scripting-security, Scripting and security>> for more details.
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=================================================
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--
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include::scripting/using.asciidoc[]
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include::scripting/fields.asciidoc[]
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include::scripting/security.asciidoc[]
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include::scripting/painless.asciidoc[]
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include::scripting/expression.asciidoc[]
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include::scripting/engine.asciidoc[]
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