IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Getting Started with Painless

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Getting Started with Painless

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Painless is a simple, secure scripting language designed specifically for use with Elasticsearch. It is the default scripting language for Elasticsearch and can safely be used for inline and stored scripts. For a detailed description of the Painless syntax and language features, see the Painless Language Specification.

You can use Painless anywhere scripts can be used in Elasticsearch. Painless provides:

Fast performance: Painless scripts run several times faster than the alternatives.
Safety: Fine-grained whitelist with method call/field granularity. See the Painless API Reference for a complete list of available classes and methods.
Optional typing: Variables and parameters can use explicit types or the dynamic def type.
Syntax: Extends Java’s syntax to provide Groovy-style scripting language features that make scripts easier to write.
Optimizations: Designed specifically for Elasticsearch scripting.

Painless Examples »