org.cloudata.tools.cloudatafs.FileNodeIterator.java Source code

Introduction

Here is the source code for org.cloudata.tools.cloudatafs.FileNodeIterator.java

Source

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.cloudata.tools.cloudatafs;

import java.io.IOException;
import java.util.Iterator;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.cloudata.core.client.Cell;
import org.cloudata.core.client.Row;

/**
 * @author jindolk
 *
 */
public class FileNodeIterator implements Iterator<FileNode> {
    public static final Log LOG = LogFactory.getLog(FileNodeIterator.class.getName());

    private Iterator<Row> iterator;

    public FileNodeIterator(Iterator<Row> iterator) {
        this.iterator = iterator;
    }

    @Override
    public boolean hasNext() {
        return iterator.hasNext();
    }

    @Override
    public FileNode next() {
        Row row = iterator.next();

        Cell cell = row.getFirst(CloudataFS.INODE_COLUMN);
        if (cell == null) {
            LOG.error(CloudataFS.INODE_COLUMN + " is null");
            return null;
        }

        FileNode fileNode;
        try {
            fileNode = new FileNode(cell.getBytes());
        } catch (IOException e) {
            LOG.error(e);
            return null;
        }
        return fileNode;
    }

    @Override
    public void remove() {

    }

}