com.bigdata.gom.web

Class GOMWebUtil

java.lang.Object

com.bigdata.gom.web.GOMWebUtil

public class GOMWebUtil
extends Object

A simple utility class that can be initialized with a ServletRequest and used to simplify dynamic web pages.

Author:

Martyn Cutcher

Constructor Summary

Constructors

Constructor and Description
GOMWebUtil()

Method Summary

Methods

Modifier and Type	Method and Description
protected static BigdataRDFContext	getBigdataRDFContext(javax.servlet.ServletContext servletContext)
static ObjectManager	getObjectManager(javax.servlet.http.HttpServletRequest request) Return an ITx.UNISOLATED ObjectManager instance that is scoped to the request.
protected static <T> T	getRequiredServletContextAttribute(javax.servlet.ServletContext servletContext, String name)
static ObjectManager	newObjectManager(javax.servlet.http.HttpServletRequest request, long timestamp) Return an ObjectManager instance that is scoped to the request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GOMWebUtil

public GOMWebUtil()

Method Detail

getObjectManager

public static ObjectManager getObjectManager(javax.servlet.http.HttpServletRequest request)
                                      throws Exception

Return an ITx.UNISOLATED ObjectManager instance that is scoped to the request. The same ObjectManager instance will be returned each time this method is invoked for the same request. A distinct ObjectManager instance is returned for each distinct request.

Parameters:

request - The request.

Returns:

The ObjectManager.

Throws:

Exception

newObjectManager

public static ObjectManager newObjectManager(javax.servlet.http.HttpServletRequest request,
                             long timestamp)
                                      throws org.openrdf.repository.RepositoryException

Return an ObjectManager instance that is scoped to the request. The same ObjectManager instance will be returned each time this method is invoked for the same request. A distinct ObjectManager instance is returned for each distinct request.

Parameters:

request - The request.

timestamp - The timestamp of the view.

Returns:

The ObjectManager.

Throws:

Exception

org.openrdf.repository.RepositoryException

getBigdataRDFContext

protected static final BigdataRDFContext getBigdataRDFContext(javax.servlet.ServletContext servletContext)

getRequiredServletContextAttribute

protected static <T> T getRequiredServletContextAttribute(javax.servlet.ServletContext servletContext,
                                       String name)