com.netflix.astyanax.serializers.IntegerSerializer Java Examples

private static void deleteDataColumns(AstyanaxTable table, String blobId, ColumnList<Composite> columns, ConsistencyLevel consistency, Long timestamp) {
    for (AstyanaxStorage storage : table.getWriteStorage()) {
        BlobPlacement placement = (BlobPlacement) storage.getPlacement();

        // Any columns with a timestamp older than the one we expect must be from an old version
        // of the blob.  This should be rare, but if it happens clean up and delete the old data.
        MutationBatch mutation = placement.getKeyspace().prepareMutationBatch(consistency);
        ColumnListMutation<Composite> row = mutation.withRow(
                placement.getBlobColumnFamily(), storage.getRowKey(blobId));
        boolean found = false;
        for (Column<Composite> column : columns) {
            if (null != timestamp && column.getTimestamp() < timestamp) {
                if (ColumnGroup.B.name().equals(column.getName().get(0, AsciiSerializer.get()))) {
                    int chunkId = column.getName().get(1, IntegerSerializer.get());
                    row.deleteColumn(getColumn(ColumnGroup.B, chunkId))
                            .deleteColumn(getColumn(ColumnGroup.Z, chunkId));
                    found = true;
                }
            }
        }
        if (found) {
            execute(mutation);
        }
    }
}
 

/**
 * returns a ColumnFamily given a columnFamilyName
 * @param columnFamilyName
 * @param rowKeyClass
 * @return a constructed ColumnFamily
 */
@SuppressWarnings({"unchecked", "rawtypes"})
protected ColumnFamily getColumnFamilyViaColumnName(String columnFamilyName, Class rowKeyClass) {
    if (rowKeyClass == String.class) {
        return new ColumnFamily(columnFamilyName, StringSerializer.get(), StringSerializer.get());
    } else if (rowKeyClass == Integer.class) {
        return new ColumnFamily(columnFamilyName, IntegerSerializer.get(), StringSerializer.get());
    } else if (rowKeyClass == Long.class) {
        return new ColumnFamily(columnFamilyName, LongSerializer.get(), StringSerializer.get());
    } else {
        throw new IllegalArgumentException("RowKeyType is not supported: " + rowKeyClass.getSimpleName() + ". String/Integer/Long are supported, or you can define the ColumnFamily yourself and use the other constructor.");
    }
}
 

private static Composite getColumn(ColumnGroup group, int index) {
    Composite column = new Composite();
    column.addComponent(group.name(), AsciiSerializer.get());
    column.addComponent(index, IntegerSerializer.get());
    return column;
}
 

/**
 * The Astyanax Composite behavior is broken in that a deserialized Composite is not .equal() to a normally
 * created Composite because the serializers aren't used correctly.  This function works around the problem.
 */
private static boolean matches(Composite column, ColumnGroup group, int index) {
    return column.size() == 2 &&
            column.get(0, AsciiSerializer.get()).equals(group.name()) &&
            column.get(1, IntegerSerializer.get()).equals(index);
}
 

@Override
public Integer readInteger() {
    return read( IntegerSerializer.get() );
}