com.espertech.esper.util
Class ResourceLoader

java.lang.Object
  com.espertech.esper.util.ResourceLoader

public class ResourceLoader
extends java.lang.Object

Utility class for loading or resolving external resources via URL and class path.

Constructor Summary

ResourceLoader()

Method Summary

static java.net.URL	getClasspathResourceAsURL(java.lang.String resourceName, java.lang.String resource) Returns an URL from an application resource in the classpath.
static java.net.URL	resolveClassPathOrURLResource(java.lang.String resourceName, java.lang.String urlOrClasspathResource) Resolve a resource into a URL using the URL string or classpath-relative filename and using a name for any exceptions thrown.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceLoader

public ResourceLoader()

Method Detail

resolveClassPathOrURLResource

public static java.net.URL resolveClassPathOrURLResource(java.lang.String resourceName,
                                                         java.lang.String urlOrClasspathResource)

Resolve a resource into a URL using the URL string or classpath-relative filename and using a name for any exceptions thrown.

Parameters:

resourceName - is the name for use in exceptions

urlOrClasspathResource - is a URL string or classpath-relative filename

Returns:

URL or null if resolution was unsuccessful

getClasspathResourceAsURL

public static java.net.URL getClasspathResourceAsURL(java.lang.String resourceName,
                                                     java.lang.String resource)

Returns an URL from an application resource in the classpath.

The method first removes the '/' character from the resource name if the first character is '/'.

The lookup order is as follows:

If a thread context class loader exists, use Thread.currentThread().getResourceAsStream to obtain an InputStream.

If no input stream was returned, use the Configuration.class.getResourceAsStream. to obtain an InputStream.

If no input stream was returned, use the Configuration.class.getClassLoader().getResourceAsStream. to obtain an InputStream.

If no input stream was returned, throw an Exception.

Parameters:

resourceName - is the name for use in exceptions

resource - is the classpath-relative filename to resolve into a URL

Returns:

URL for resource