ErrorArchiveStoreItem.java (freenet.client)

// s243a pearltree node: http://www.pearltrees.com/s243a/java-freenet-client/id12827785
/* This code is part of Freenet. It is distributed under the GNU General
 * Public License, version 2 (or at your option any later version). See
 * http://www.gnu.org/ for further details of the GPL. */
package freenet.client;

import freenet.keys.FreenetURI;
import freenet.support.api.Bucket;

class ErrorArchiveStoreItem extends ArchiveStoreItem {

    /** Error message. Usually something about the file being too big. */
    String error;
    boolean tooBig;

    /**
     * Create a placeholder item for a file which could not be extracted from the archive.
     * @param ctx The context object which tracks all the items with this key.
     * @param key2 The key from which the archive was fetched.
     * @param name The name of the file which failed to extract.
     * @param error The error message to be included in the thrown exception when
     * somebody tries to get the data.
     */
    public ErrorArchiveStoreItem(ArchiveStoreContext ctx, FreenetURI key2, String name, String error, boolean tooBig) {
        super(new ArchiveKey(key2, name), ctx);
        this.error = error;
        this.tooBig = tooBig;
    }

    /**
     * Throws an exception with the given error message, because this file could not be
     * extracted from the archive.
     */
    @Override
    Bucket getDataOrThrow() throws ArchiveFailureException {
        throw new ArchiveFailureException(error);
    }

    @Override
    public long spaceUsed() {
        return 0;
    }

    @Override
    Bucket getReaderBucket() throws ArchiveFailureException {
        if(tooBig) return null;
        throw new ArchiveFailureException(error);
    }

    public boolean tooBig() {
        return tooBig;
    }

}