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* [DOCS] Add documentation for Painless field API * Moving content to a new page and incorporating reviewer feedback * Clarify note * Incorporating review comments * Remove Object so as not to confuse it with the object type * Add section and table for supported mapped field types * Update table based on review feedback
66 lines
1.5 KiB
Text
66 lines
1.5 KiB
Text
[[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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can use a script to return a computed value as a field or evaluate a custom
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score for a query.
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The default scripting language is <<modules-scripting-painless,Painless>>.
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Additional `lang` plugins are available to run scripts written in other
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languages. You can specify the language of the script anywhere that scripts run.
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[discrete]
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[[scripting-available-languages]]
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== Available scripting languages
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Painless is purpose-built for {es}, can be used for any purpose in the
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scripting APIs, and provides the most flexibility. The other languages are less
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flexible, but can be useful for specific purposes.
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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-painless,`painless`>>
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|{yes-icon}
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|Built-in
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|Purpose-built for {es}
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|<<modules-scripting-expression, `expression`>>
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|{yes-icon}
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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-icon}
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|Built-in
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|Templates
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|<<modules-scripting-engine, `java`>>
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|{no-icon}
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|You write it!
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|Expert API
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|========
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--
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include::scripting/painless.asciidoc[]
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include::scripting/using.asciidoc[]
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include::scripting/access-fields.asciidoc[]
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include::scripting/common-script-uses.asciidoc[]
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include::scripting/fields.asciidoc[]
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include::scripting/security.asciidoc[]
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include::scripting/expression.asciidoc[]
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include::scripting/engine.asciidoc[]
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