File	Doc	Category	Size	Date	Package
Engine.java	API Doc	Android 1.5 API	4434	Wed May 06 22:41:06 BST 2009	org.apache.harmony.security.fortress

Engine

• java.lang.Object

Fields Summary
private String	serviceName
private Provider$Service	returnedService
private String	lastAlgorithm
private int	refreshNumber
public Provider	provider Provider
public Object	spi SPI instance
public static SecurityAccess	door Access to package visible api in java.security

Constructors Summary
public Engine(String service) Creates a Engine object param service this.serviceName = service;

Methods Summary
public synchronized void	getInstance(java.lang.String algorithm, java.lang.Object param) Finds the appropriate service implementation and creates instance of the class that implements corresponding Service Provider Interface. param algorithm param service throws NoSuchAlgorithmException Provider.Service serv; if (algorithm == null) { throw new NoSuchAlgorithmException(Messages.getString("security.149")); //$NON-NLS-1$ } Services.refresh(); if (returnedService != null && algorithm.equalsIgnoreCase(lastAlgorithm) && refreshNumber == Services.refreshNumber) { serv = returnedService; } else { if (Services.isEmpty()) { throw new NoSuchAlgorithmException(Messages.getString("security.14A", //$NON-NLS-1$ serviceName, algorithm)); } serv = Services.getService(new StringBuffer(128) .append(serviceName).append(".").append( //$NON-NLS-1$ algorithm.toUpperCase()).toString()); if (serv == null) { throw new NoSuchAlgorithmException(Messages.getString("security.14A", //$NON-NLS-1$ serviceName, algorithm)); } returnedService = serv; lastAlgorithm = algorithm; refreshNumber = Services.refreshNumber; } spi = serv.newInstance(param); this.provider = serv.getProvider();
public synchronized void	getInstance(java.lang.String algorithm, java.security.Provider provider, java.lang.Object param) Finds the appropriate service implementation and creates instance of the class that implements corresponding Service Provider Interface. param algorithm param service param provider throws NoSuchAlgorithmException Provider.Service serv = null; if (algorithm == null) { throw new NoSuchAlgorithmException( Messages.getString("security.14B", serviceName)); //$NON-NLS-1$ } serv = provider.getService(serviceName, algorithm); if (serv == null) { throw new NoSuchAlgorithmException(Messages.getString("security.14A", //$NON-NLS-1$ serviceName, algorithm)); } spi = serv.newInstance(param); this.provider = provider;