org.glassfish.appclient.common

Class Util

java.lang.Object

org.glassfish.appclient.common.Util

public class Util
extends Object

Implements several stateless utility methods.

Author:

tjquinn

Constructor Summary

Constructors

Constructor and Description
Util() Creates a new instance of Util

Method Summary

Modifier and Type	Method and Description
static File	copyToTempFile(File inputFile, String prefix, String suffix, boolean retainFile) Copy an existing file into a temporary file.
static String	getMainClassNameForAppClient(ModuleDescriptor moduleDescr) Returns the main class name for the app client represented by the module descriptor.
static String	loadResource(Class contextClass, String resourcePath) Retrieves a resource as a String.
static URL	locateClass(Class target) Finds the jar file or directory that contains the current class and returns its URI.
static String	replaceTokens(String s, Properties values) Searches for placeholders of the form ${token-name} in the input String, retrieves the property with name token-name from the Properties object, and (if found) replaces the token in the input string with the property value.
static String	URLtoCodeBase(URL classPathElement) Returns a codeBase expression, usable in a policy file, for the specified URL.
static File	writeTextToTempFile(String content, String prefix, String suffix) Writes the provided text to a temporary file marked for deletion on exit.
static File	writeTextToTempFile(String content, String prefix, String suffix, boolean retainFile) Writes the provided text to a temporary file marked for deletion on exit.

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Creates a new instance of Util

Method Detail

replaceTokens

public static String replaceTokens(String s,
                                   Properties values)

Searches for placeholders of the form ${token-name} in the input String, retrieves the property with name token-name from the Properties object, and (if found) replaces the token in the input string with the property value.

Parameters:

s - String possibly containing tokens

values - Properties object containing name/value pairs for substitution

Returns:

the original string with tokens substituted using their values from the Properties object

getMainClassNameForAppClient

public static String getMainClassNameForAppClient(ModuleDescriptor moduleDescr)
                                           throws IOException,
                                                  FileNotFoundException,
                                                  SAXParseException

Returns the main class name for the app client represented by the module descriptor.

Parameters:

moduleDescr - the module descriptor for the app client of interest

Returns:

main class name of the app client

Throws:

IOException

FileNotFoundException

SAXParseException

writeTextToTempFile

public static File writeTextToTempFile(String content,
                                       String prefix,
                                       String suffix,
                                       boolean retainFile)
                                throws IOException,
                                       FileNotFoundException

Writes the provided text to a temporary file marked for deletion on exit.

Parameters:

content - the content to be written

prefix - prefix for the temp file, conforming to the File.createTempFile requirements

suffix - suffix for the temp file

retainFile - whether to keep the file

Returns:

File object for the newly-created temp file

Throws:

IOException - for any errors writing the temporary file

FileNotFoundException - if the temp file cannot be opened for any reason

writeTextToTempFile

public static File writeTextToTempFile(String content,
                                       String prefix,
                                       String suffix)
                                throws IOException,
                                       FileNotFoundException

Writes the provided text to a temporary file marked for deletion on exit.

Parameters:

content - the content to be written

prefix - for the temp file, conforming to the File.createTempFile requirements

suffix - for the temp file

Returns:

File object for the newly-created temp file

Throws:

IOException - for any errors writing the temporary file

FileNotFoundException - if the temp file cannot be opened for any reason

locateClass

public static URL locateClass(Class target)

Finds the jar file or directory that contains the current class and returns its URI.

Parameters:

target - the class, the containing jar file or directory of which is of interest

Returns:

URL to the containing jar file or directory

loadResource

public static String loadResource(Class contextClass,
                                  String resourcePath)
                           throws IOException

Retrieves a resource as a String.

This method does not save the template in a cache. Use the instance method getTemplate for that purpose.

Parameters:

contextClass - a class, the class loader of which should be used for searching for the template

resourcePath - the path of the resource to load, relative to the contextClass

Returns:

the resource's contents

Throws:

IOException - if the resource is not found or in case of error while loading it

copyToTempFile

public static File copyToTempFile(File inputFile,
                                  String prefix,
                                  String suffix,
                                  boolean retainFile)
                           throws IOException,
                                  FileNotFoundException

Copy an existing file into a temporary file.

Parameters:

inputFile - existing file

Returns:

File object for the temporary file

Throws:

IOException

FileNotFoundException

URLtoCodeBase

public static String URLtoCodeBase(URL classPathElement)
                            throws FileNotFoundException,
                                   URISyntaxException

Returns a codeBase expression, usable in a policy file, for the specified URL.

Parameters:

classPathElement - the URL to be converted

Returns:

the codeBase expression

Throws:

FileNotFoundException

URISyntaxException