Examples with ILocalResourceRepository org.apache.hyracks.storage.common.ILocalResourceRepository used on opensource projects

Example 1 with ILocalResourceRepository

use of org.apache.hyracks.storage.common.ILocalResourceRepository in project asterixdb by apache.

the class IndexBuilder method build.

@Override
public void build() throws HyracksDataException {
    IResourceLifecycleManager<IIndex> lcManager = storageManager.getLifecycleManager(ctx);
    synchronized (lcManager) {
        // The previous resource Id needs to be removed since calling IIndex.create() may possibly destroy any
        // physical artifact that the LocalResourceRepository is managing (e.g. a file containing the resource Id).
        // Once the index has been created, a new resource Id can be generated.
        ILocalResourceRepository localResourceRepository = storageManager.getLocalResourceRepository(ctx);
        LocalResource lr = localResourceRepository.get(resourceRef.getRelativePath());
        long resourceId = lr == null ? -1 : lr.getId();
        if (resourceId != -1) {
            localResourceRepository.delete(resourceRef.getRelativePath());
        }
        resourceId = resourceIdFactory.createId();
        IResource resource = localResourceFactory.createResource(resourceRef);
        lr = new LocalResource(resourceId, ITreeIndexFrame.Constants.VERSION, durable, resource);
        IIndex index = lcManager.get(resourceRef.getRelativePath());
        if (index != null) {
            //how is this right?????????? <needs to be fixed>
            //The reason for this is to handle many cases such as:
            //1. Crash while delete index is running (we don't do global cleanup on restart)
            //2. Node leaves and then join with old data
            lcManager.unregister(resourceRef.getRelativePath());
        } else {
            index = resource.createInstance(ctx);
        }
        index.create();
        try {
            localResourceRepository.insert(lr);
        } catch (IOException e) {
            throw HyracksDataException.create(e);
        }
        lcManager.register(resourceRef.getRelativePath(), index);
    }
}