com.texeltek.accumulocloudbaseshim.SortedKeyValueIteratorShim.java Source code

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Here is the source code for com.texeltek.accumulocloudbaseshim.SortedKeyValueIteratorShim.java

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/*
 * 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 com.texeltek.accumulocloudbaseshim;

import org.apache.accumulo.core.data.ByteSequence;
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.IteratorEnvironment;
import org.apache.accumulo.core.iterators.SortedKeyValueIterator;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.Transformer;

import java.io.IOException;
import java.util.Collection;
import java.util.Map;

public class SortedKeyValueIteratorShim implements SortedKeyValueIterator<Key, Value> {

    public final cloudbase.core.iterators.SortedKeyValueIterator<cloudbase.core.data.Key, cloudbase.core.data.Value> impl;

    public SortedKeyValueIteratorShim(
            cloudbase.core.iterators.SortedKeyValueIterator<cloudbase.core.data.Key, cloudbase.core.data.Value> impl) {
        this.impl = impl;
    }

    @Override
    public void init(SortedKeyValueIterator<Key, Value> source, Map<String, String> options,
            IteratorEnvironment env) throws IOException {
        impl.init(((SortedKeyValueIteratorShim) source).impl, options, ((IteratorEnvironmentShim) env).impl);
    }

    @Override
    public boolean hasTop() {
        return impl.hasTop();
    }

    @Override
    public void next() throws IOException {
        impl.next();
    }

    @Override
    @SuppressWarnings("unchecked")
    public void seek(Range range, Collection<ByteSequence> columnFamilies, boolean inclusive) throws IOException {
        impl.seek(range.impl, CollectionUtils.collect(columnFamilies, new Transformer() {
            @Override
            public Object transform(Object o) {
                return ((ByteSequence) o).impl;
            }
        }), inclusive);
    }

    @Override
    public Key getTopKey() {
        return new Key(impl.getTopKey());
    }

    @Override
    public Value getTopValue() {
        return new Value(impl.getTopValue());
    }

    @Override
    public SortedKeyValueIterator deepCopy(IteratorEnvironment env) {
        return new SortedKeyValueIteratorShim(impl.deepCopy(((IteratorEnvironmentShim) env).impl));
    }
}