org.apache.cayenne.configuration.web.WebUtil Maven / Gradle / Ivy
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package org.apache.cayenne.configuration.web;
import javax.servlet.ServletContext;
import org.apache.cayenne.configuration.CayenneRuntime;
/**
* A helper class to retrieve and store {@link CayenneRuntime} in the
* {@link ServletContext}. All Cayenne web configuration objects, such as
* {@link CayenneFilter} and {@link org.apache.cayenne.rop.ROPServlet}, are using this class to access
* runtime.
*
* @since 3.1
*/
public class WebUtil {
static final String CAYENNE_RUNTIME_KEY = WebUtil.class.getName()
+ ".CAYENNE_RUNTIME";
/**
* Retrieves CayenneRuntime previously stored in provided context via
* {@link #setCayenneRuntime(ServletContext, CayenneRuntime)}. May return null if no
* runtime was stored.
*/
public static CayenneRuntime getCayenneRuntime(ServletContext context) {
return (CayenneRuntime) context.getAttribute(CAYENNE_RUNTIME_KEY);
}
/**
* Stores {@link CayenneRuntime} in the servlet context. It can be later retrieve via
* {@link #getCayenneRuntime(ServletContext)}.
*/
public static void setCayenneRuntime(ServletContext context, CayenneRuntime runtime) {
context.setAttribute(CAYENNE_RUNTIME_KEY, runtime);
}
}