Synnefo » Pithos MacOS Client

//

//  PithosNode.m

//  pithos-macos

//

// Copyright 2011 GRNET S.A. All rights reserved.

//

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

#import "PithosContainer.h"

#import "PithosObject.h"

#import "PithosSubdir.h"

#import "ASIPithosContainerRequest.h"

#import "ASIPithosObject.h"

@implementation PithosContainer

@synthesize containerName;

#pragma mark -

#pragma mark Object Lifecycle

- (id)initWithContainerName:(NSString *)aContainerName {

    if ((self = [super init])) {

        containerName = [aContainerName copy];

    }

    return self;

}

- (void)dealloc {

    [objects release];

    [containerName release];

    [super dealloc];

}

#pragma mark -

#pragma mark ASIHTTPRequestDelegate

- (void)requestFinished:(ASIPithosContainerRequest *)containerRequest {

    NSArray *someObjects = [containerRequest objects];

    if (objects == nil) {

        objects = [[NSMutableArray alloc] initWithArray:someObjects];

    } else {

        [objects addObjectsFromArray:someObjects];

    }    

    if ([someObjects count] < 10000) {

        // Save new children

        NSMutableArray *newChildren = [NSMutableArray array];

        for (ASIPithosObject *object in objects) {

            if (object.subdir) {

                PithosSubdir *node = [[[PithosSubdir alloc] initWithContainerName:containerName subdirName:object.name] autorelease];

                // XXX reuse pointers

                [newChildren addObject:node];                

            } else {

                PithosObject *node = [[[PithosObject alloc] initWithContainerName:containerName objectName:object.name] autorelease];

                // XXX reuse pointers

                [newChildren addObject:node];                                

            }

        }

        [objects release];

        [children release];

        childrenDirty = NO;

        // XXX sort then based on preferences

        children = [newChildren retain];

        // Notify observers that children are updated

        [[NSNotificationCenter defaultCenter] postNotificationName:@"PithosNodeChildrenUpdated" object:self];

    } else {

        // Do an additional request to fetch more objects

        ASIPithosContainerRequest *newContainerRequest = [ASIPithosContainerRequest listObjectsRequestWithContainerName:containerName 

                                                                                                                  limit:0 

                                                                                                                 marker:[[someObjects lastObject] name] 

                                                                                                                 prefix:nil 

                                                                                                              delimiter:@"/" 

                                                                                                                   path:nil 

                                                                                                                   meta:nil 

                                                                                                                 shared:NO 

                                                                                                                  until:nil];

        newContainerRequest.delegate = self;

        [newContainerRequest startAsynchronous];

    }

}

- (void)requestFailed:(ASIPithosContainerRequest *)containerRequest {

    // XXX do something on error, cleanup

    [objects release];

}

#pragma mark -

#pragma mark Properties

- (NSArray *)children {

    if (children == nil || childrenDirty) {

        // XXX maybe keep old children?

        children =  [[NSArray alloc] init];

        ASIPithosContainerRequest *containerRequest = [ASIPithosContainerRequest listObjectsRequestWithContainerName:containerName 

                                                                                                               limit:0 

                                                                                                              marker:nil 

                                                                                                              prefix:nil 

                                                                                                           delimiter:@"/" 

                                                                                                                path:nil 

                                                                                                                meta:nil 

                                                                                                              shared:NO 

                                                                                                               until:nil];

        containerRequest.delegate = self;

        [containerRequest startAsynchronous];

    }

    return children;

}

- (NSString *)displayName {

    return [[containerName copy] autorelease];

}

@end