Examples with ScriptContext org.opensearch.script.ScriptContext used on opensource projects

Example 6 with ScriptContext

use of org.opensearch.script.ScriptContext in project OpenSearch by opensearch-project.

the class MustacheScriptEngine method compile.

/**
 * Compile a template string to (in this case) a Mustache object than can
 * later be re-used for execution to fill in missing parameter values.
 *
 * @param templateSource a string representing the template to compile.
 * @return a compiled template object for later execution.
 */
@Override
public <T> T compile(String templateName, String templateSource, ScriptContext<T> context, Map<String, String> options) {
    if (context.instanceClazz.equals(TemplateScript.class) == false) {
        throw new IllegalArgumentException("mustache engine does not know how to handle context [" + context.name + "]");
    }
    final MustacheFactory factory = createMustacheFactory(options);
    Reader reader = new StringReader(templateSource);
    try {
        Mustache template = factory.compile(reader, "query-template");
        TemplateScript.Factory compiled = params -> new MustacheExecutableScript(template, params);
        return context.factoryClazz.cast(compiled);
    } catch (MustacheException ex) {
        throw new ScriptException(ex.getMessage(), ex, Collections.emptyList(), templateSource, NAME);
    }
}