ScriptExecutor.java 文件源码

protected Map<String, Object> applyVars ( final ScriptContext context, final Map<String, Object> scriptObjects )
{
    if ( scriptObjects == null || scriptObjects.isEmpty () )
    {
        return null;
    }

    final Map<String, Object> replaced = new HashMap<String, Object> ();
    for ( final Map.Entry<String, Object> entry : scriptObjects.entrySet () )
    {
        final Object original = context.getAttribute ( entry.getKey (), ScriptContext.ENGINE_SCOPE );
        replaced.put ( entry.getKey (), original );
        context.setAttribute ( entry.getKey (), entry.getValue (), ScriptContext.ENGINE_SCOPE );
    }
    return replaced;
}