``` /** * When set to {@code false}, use thread-...

# scripting

[sdeleuze]

/**
	 * When set to {@code false}, use thread-local {@link ScriptEngine} instances instead
	 * of one single shared instance. This flag should be set to {@code false} for those
	 * using non thread-safe script engines with templating libraries not designed for
	 * concurrency, like Handlebars or React running on Nashorn for example.
	 * In this case, Java 8u60 or greater is required due to
	 * <a href="https://bugs.openjdk.java.net/browse/JDK-8076099">this bug</a>.
	 * <p>When this flag is set to {@code false}, the script engine must be specified using
	 * {@link #setEngineName(String)}. Using {@link #setEngine(ScriptEngine)} is not
	 * possible because multiple instances of the script engine need to be created lazily
	 * (one per thread).
	 * @see <a href="http://docs.oracle.com/javase/8/docs/api/javax/script/ScriptEngineFactory.html#getParameter-java.lang.String-">THREADING ScriptEngine parameter<a/>
	 */