org.das2.catalog

Class DasNodeFactory

java.lang.Object

org.das2.catalog.DasNodeFactory

public class DasNodeFactory
extends java.lang.Object

Public static generator functions for das2 federated catalog node objects.

Constructor Summary

Constructors

Constructor and Description
DasNodeFactory()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	defaultDataPath()
static java.lang.String	defaultTestPath()
static DasNode	getNearestNode(java.lang.String sUrl, ProgressMonitor mon, boolean bReload) Kind of like traceroute, try to resolve successively longer paths until you get to one that fails.
static DasNode	getNode(java.lang.String sUrl, ProgressMonitor mon, boolean bReload) Get a node from the global node map by URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

DasNodeFactory

public DasNodeFactory()

Method Detail

getNode

public static DasNode getNode(java.lang.String sUrl,
                              ProgressMonitor mon,
                              boolean bReload)
                       throws DasResolveException,
                              java.io.IOException,
                              java.text.ParseException

Get a node from the global node map by URL. This function tries to load and return the node for the given URL. If the file portion of the node is a recognized filesystem type then that exact URL is attempted. For example: https://space.physics.uiowa.edu/juno/test/random_source.data would trigger a filesystem type lookup that expects an exact match. While a URL such as: tag:das2.org,2012:test:/uiowa/juno/random_collection/das2 For space savings, tag:das2.org,2012: may be left off of the given URLs. If nothing can be matched, null is return. The resulting parsed node is saved in a cache to avoid repeated network traffic.

Parameters:

sUrl -

mon -

bReload - - Reload the node definition from the original source

Returns:

The node requested, or throws an error

Throws:

DasResolveException

java.io.IOException

java.text.ParseException

getNearestNode

public static DasNode getNearestNode(java.lang.String sUrl,
                                     ProgressMonitor mon,
                                     boolean bReload)
                              throws DasResolveException

Kind of like traceroute, try to resolve successively longer paths until you get to one that fails. For filesystem type URLS (http:, file:, etc.) this is the same as getNode().

Parameters:

sUrl - An autoplot URL

mon -

bReload -

Returns:

The nearest loadable DasNode for the path specified.

Throws:

DasResolveException - if a Filesystem style URL cannot be loaded as a DasNode.

defaultDataPath

public static java.lang.String defaultDataPath()

defaultTestPath

public static java.lang.String defaultTestPath()