Apple WebObjects 3.5 Bedienungsanleitung PDF herunterladen (Seite 129)

State Storage Strategies

129

// WebScript StateStorage FileSessionStore.wos

@interface FileSessionStore:NSObject {

id archiveDirectory;

}

- init;

- archiveFileForSessionID:aSessionID;

- archiveForSessionID:aSessionID;

- restoreSession;

- saveSession:aSession;

@end

These methods have the following implementation:

@implementation FileSessionStore

- init {

self = [super init];

archiveDirectory = [WOApp pathForResourceNamed:@"SessionArchives"

ofType:nil];

return self;

}

- archiveFileForSessionID:aSessionID {

return [NSString stringWithFormat:@"%@/%@", archiveDirectory,

aSessionID];

}

- archiveForSessionID:aSessionID {

id archiveFile = [self archiveFileForSessionID:aSessionID];

return [NSData dataWithContentsOfFile:archiveFile];

}

- restoreSession {

id request = [[WOApp context] request];

id archivedSession;

id restoredSession;

// Allow requests in this session to go to any application instance.

[[WOApp context] setDistributionEnabled:YES];

// Get archived session (as an NSData object)

archivedSession = [self archiveForSessionID:[request sessionID]];

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Apple WebObjects 3.5 Bedienungsanleitung Seite 129