core/src/main/java/org/apache/accumulo/core/client/mock/MockBatchScanner.java

/*
 * 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.apache.accumulo.core.client.mock;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map.Entry;

import org.apache.accumulo.core.client.BatchScanner;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Range;
import org.apache.accumulo.core.data.Value;
import org.apache.accumulo.core.iterators.SortedKeyValueIterator;
import org.apache.accumulo.core.iterators.SortedMapIterator;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.commons.collections.iterators.IteratorChain;

/**
 * @deprecated since 1.8.0; use MiniAccumuloCluster or a standard mock framework instead.
 */
@Deprecated
public class MockBatchScanner extends MockScannerBase implements BatchScanner {

  List<Range> ranges = null;

  public MockBatchScanner(MockTable mockTable, Authorizations authorizations) {
    super(mockTable, authorizations);
  }

  @Override
  public void setRanges(Collection<Range> ranges) {
    if (ranges == null || ranges.size() == 0) {
      throw new IllegalArgumentException("ranges must be non null and contain at least 1 range");
    }

    this.ranges = new ArrayList<>(ranges);
  }

  @SuppressWarnings("unchecked")
  @Override
  public Iterator<Entry<Key,Value>> iterator() {
    if (ranges == null) {
      throw new IllegalStateException("ranges not set");
    }

    IteratorChain chain = new IteratorChain();
    for (Range range : ranges) {
      SortedKeyValueIterator<Key,Value> i = new SortedMapIterator(table.table);
      try {
        i = createFilter(i);
        i.seek(range, createColumnBSS(fetchedColumns), !fetchedColumns.isEmpty());
        chain.addIterator(new IteratorAdapter(i));
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
    return chain;
  }

  @Override
  public void close() {}
}