Para (para-core 1.34.2 API)

java.lang.Object
- com.erudika.para.Para

```
public final class Para
extends Object
```
This is the main utility class and entry point. Dependency injection is initialized with the provided modules.

Author:

Alex Bogdanovski [alex@erudika.com]

Field Summary

Fields
Modifier and Type Field and Description

static String LOGO
The ASCII logo.

Fields
Modifier and Type	Field and Description
`static String`	`LOGO` The ASCII logo.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`addDestroyListener(DestroyListener dl)` Registers a new destruction listener.
`static void`	`addInitListener(InitializeListener il)` Registers a new initialization listener.
`static void`	`addIOListener(IOListener iol)` Registers a new Para I/O listener.
`static void`	`addSearchQueryListener(IOListener iol)` Registers a new Para I/O listener for listening to search queries.
`static void`	`asyncExecute(Runnable runnable)` Executes a `Runnable` asynchronously.
`static ScheduledFuture<?>`	`asyncExecutePeriodically(Runnable task, long delay, long interval, TimeUnit t)` Executes a `Runnable` at a fixed interval, asynchronously.
`static void`	`destroy()` Calls all registered listeners on exit.
`static Cache`	`getCache()`
`static List<CustomResourceHandler>`	`getCustomResourceHandlers()` Try loading external `CustomResourceHandler` classes.
`static DAO`	`getDAO()`
`static ExecutorService`	`getExecutorService()` Returns the Para executor service.
`static Set<IOListener>`	`getIOListeners()` Returns a list of I/O listeners (callbacks).
`static ClassLoader`	`getParaClassLoader()` Returns the `URLClassLoader` classloader for Para.
`static Queue`	`getQueue()`
`static ScheduledExecutorService`	`getScheduledExecutorService()` Returns the Para scheduled executor service.
`static Search`	`getSearch()`
`static Set<IOListener>`	`getSearchQueryListeners()` Returns a list of I/O listeners for search queries.
`static String`	`getVersion()` The current version of Para.
`static void`	`initialize()` Executes all initialize listeners and prints logo.
`static Map<String,String>`	`newApp(String appid, String name, boolean sharedTable, boolean sharedIndex)` Creates a new application and returns the credentials for it.
`static void`	`printLogo()` Prints the Para logo to System.out.
`static Map<String,String>`	`setup()` Creates the root application and returns the credentials for it.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - LOGO
```
public static final String LOGO
```
    The ASCII logo.
- Method Detail
  - initialize
```
public static void initialize()
```
    Executes all initialize listeners and prints logo. Call this method first.
  - destroy
```
public static void destroy()
```
    Calls all registered listeners on exit. Call this method last.
  - getDAO
```
public static DAO getDAO()
```
    Returns:
    
    an instance of the core persistence class.
    
    See Also:
    
    DAO
  - getSearch
```
public static Search getSearch()
```
    Returns:
    
    an instance of the core search class.
    
    See Also:
    
    Search
  - getCache
```
public static Cache getCache()
```
    Returns:
    
    an instance of the core cache class.
    
    See Also:
    
    Cache
  - getQueue
```
public static Queue getQueue()
```
    Returns:
    
    an instance of the core queue class.
    
    See Also:
    
    Queue
  - addInitListener
```
public static void addInitListener(InitializeListener il)
```
    Registers a new initialization listener.
    
    Parameters:
    
    il - the listener
  - addDestroyListener
```
public static void addDestroyListener(DestroyListener dl)
```
    Registers a new destruction listener.
    
    Parameters:
    
    dl - the listener
  - addIOListener
```
public static void addIOListener(IOListener iol)
```
    Registers a new Para I/O listener.
    
    Parameters:
    
    iol - the listener
  - getIOListeners
```
public static Set<IOListener> getIOListeners()
```
    Returns a list of I/O listeners (callbacks).
    
    Returns:
    
    the list of registered listeners
  - addSearchQueryListener
```
public static void addSearchQueryListener(IOListener iol)
```
    Registers a new Para I/O listener for listening to search queries.
    
    Parameters:
    
    iol - the listener
  - getSearchQueryListeners
```
public static Set<IOListener> getSearchQueryListeners()
```
    Returns a list of I/O listeners for search queries.
    
    Returns:
    
    the list of registered listeners for listening to search queries
  - getExecutorService
```
public static ExecutorService getExecutorService()
```
    Returns the Para executor service.
    
    Returns:
    
    a fixed thread executor service
  - getScheduledExecutorService
```
public static ScheduledExecutorService getScheduledExecutorService()
```
    Returns the Para scheduled executor service.
    
    Returns:
    
    a scheduled executor service
  - asyncExecute
```
public static void asyncExecute(Runnable runnable)
```
    Executes a Runnable asynchronously.
    
    Parameters:
    
    runnable - a task
  - asyncExecutePeriodically
```
public static ScheduledFuture<?> asyncExecutePeriodically(Runnable task,
                                                          long delay,
                                                          long interval,
                                                          TimeUnit t)
```
    Executes a Runnable at a fixed interval, asynchronously.
    
    Parameters:
    
    task - a task
    
    delay - run after
    
    interval - run at this interval of time
    
    t - time unit
    
    Returns:
    
    a Future
  - getCustomResourceHandlers
```
public static List<CustomResourceHandler> getCustomResourceHandlers()
```
    Try loading external CustomResourceHandler classes. These will handle custom API requests. via ServiceLoader.load(java.lang.Class).
    
    Returns:
    
    a loaded list of ServletContextListener class.
  - getParaClassLoader
```
public static ClassLoader getParaClassLoader()
```
    Returns the URLClassLoader classloader for Para. Used for loading JAR files from 'lib/*.jar'.
    
    Returns:
    
    a classloader
  - setup
```
public static Map<String,String> setup()
```
    Creates the root application and returns the credentials for it.
    
    Returns:
    
    credentials for the root app
  - newApp
```
public static Map<String,String> newApp(String appid,
                                        String name,
                                        boolean sharedTable,
                                        boolean sharedIndex)
```
    Creates a new application and returns the credentials for it.
    
    Parameters:
    
    appid - the app identifier
    
    name - the full name of the app
    
    sharedTable - false if the app should have its own table
    
    sharedIndex - false if the app should have its own index
    
    Returns:
    
    credentials for the root app
  - printLogo
```
public static void printLogo()
```
    Prints the Para logo to System.out.
  - getVersion
```
public static String getVersion()
```
    The current version of Para.
    
    Returns:
    
    version string, from pom.xml

Class Para

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

LOGO

Method Detail

initialize

destroy

getDAO

getSearch

getCache

getQueue

addInitListener

addDestroyListener

addIOListener

getIOListeners

addSearchQueryListener

getSearchQueryListeners

getExecutorService

getScheduledExecutorService

asyncExecute

asyncExecutePeriodically

getCustomResourceHandlers

getParaClassLoader

setup

newApp

printLogo

getVersion