Package gov.nasa.pds.tools.util

Class Utility

java.lang.Object

gov.nasa.pds.tools.util.Utility

public class Utility
extends Object

Utility class.

Author:

mcayanan

Field Summary

Fields

Modifier and Type	Field	Description
static HashMap<String,ValidationTarget>	cachedTargets

Constructor Summary

Constructors

Constructor	Description
Utility()

Method Summary

Modifier and Type	Method	Description
static boolean	canRead(String url)
static boolean	canRead(URL url)
static String	fixSlashes(String sysid)	Replace backslashes with forward slashes.
static InputSource	getInputSourceByURL(URL url)
static URL	getParent(URL url)
static TargetType	getTargetType(URL url)
static TargetType	getTargetType(URL source, URL label)
static ValidationTarget	getValidationTarget(URL target)	Returns a ValidationTarget for the specified target URL.
static ValidationTarget	getValidationTarget(URL source, URL label)
static boolean	isDir(String url)
static boolean	isDir(URL url)
static String	makeAbsolute(String base, String sysid)	Construct an absolute URI from a relative one, using the current base URI.
static InputStream	openConnection(URLConnection conn)	Method that opens a connection.
static String	removeLastSlash(String url)
static boolean	supportXincludes()	Convenience method for disabling xinclude support throughout the core library.
static URL	toURL(String target)
static List<URL>	toURL(List<String> targets)

Methods inherited from class java.lang.Object

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

Field Detail

cachedTargets

public static HashMap<String,ValidationTarget> cachedTargets

Constructor Detail

Utility

public Utility()

Method Detail

getValidationTarget

public static ValidationTarget getValidationTarget(URL target)

Returns a ValidationTarget for the specified target URL. If a cached target already exists in the cache, then that is returned, otherwise a new ValidationTarget is returned.

getValidationTarget

public static ValidationTarget getValidationTarget(URL source,
                                                   URL label)

openConnection

public static InputStream openConnection(URLConnection conn)
                                  throws IOException

Method that opens a connection. Supports redirects.

Parameters:

conn - URL Connection

Returns:

input stream.

Throws:

IOException - If an error occurred while opening the stream.

getInputSourceByURL

public static InputSource getInputSourceByURL(URL url)
                                       throws IOException

Throws:

IOException

toURL

public static List<URL> toURL(List<String> targets)
                       throws MalformedURLException

Throws:

MalformedURLException

toURL

public static URL toURL(String target)
                 throws MalformedURLException

Throws:

MalformedURLException

isDir

public static boolean isDir(String url)

isDir

public static boolean isDir(URL url)

getParent

public static URL getParent(URL url)

canRead

public static boolean canRead(URL url)

canRead

public static boolean canRead(String url)

removeLastSlash

public static String removeLastSlash(String url)

supportXincludes

public static boolean supportXincludes()

Convenience method for disabling xinclude support throughout the core library.

Returns:

fixSlashes

public static String fixSlashes(String sysid)

Replace backslashes with forward slashes. (URLs always use forward slashes.)

Parameters:

sysid - The input system identifier.

Returns:

The same system identifier with backslashes turned into forward slashes.

makeAbsolute

public static String makeAbsolute(String base,
                                  String sysid)
                           throws MalformedURLException

Construct an absolute URI from a relative one, using the current base URI.

Parameters:

sysid - The (possibly relative) system identifier

Returns:

The system identifier made absolute with respect to the current #base.

Throws:

MalformedURLException

getTargetType

public static TargetType getTargetType(URL url)

getTargetType

public static TargetType getTargetType(URL source,
                                       URL label)