cosmos.impl.IndexToMultimapRecord.java Source code

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Here is the source code for cosmos.impl.IndexToMultimapRecord.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.
 *
 *  Copyright 2013 Josh Elser
 *
 */
package cosmos.impl;

import java.nio.charset.CharacterCodingException;
import java.util.Map.Entry;

import org.apache.accumulo.core.client.TableNotFoundException;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Value;
import org.apache.hadoop.io.Text;

import com.google.common.base.Function;

import cosmos.Cosmos;
import cosmos.UnexpectedStateException;
import cosmos.options.Defaults;
import cosmos.records.impl.MultimapRecord;
import cosmos.store.Store;

/**
 * 
 */
public class IndexToMultimapRecord implements Function<Entry<Key, Value>, MultimapRecord> {

    protected final Cosmos sorts;
    protected final Store id;

    public IndexToMultimapRecord(Cosmos sorts, Store id) {
        this.sorts = sorts;
        this.id = id;
    }

    @Override
    public MultimapRecord apply(Entry<Key, Value> input) {
        Key k = input.getKey();

        Text colqual = k.getColumnQualifier();

        int index = colqual.find(Defaults.NULL_BYTE_STR);
        if (-1 == index) {
            throw new RuntimeException("Was provided unexpected Key: " + k);
        }

        int start = index + 1;
        try {
            String docId = Text.decode(colqual.getBytes(), start, colqual.getLength() - start);

            return sorts.contents(id, docId);

        } catch (TableNotFoundException e) {
            throw new RuntimeException(e);
        } catch (UnexpectedStateException e) {
            throw new RuntimeException(e);
        } catch (CharacterCodingException e) {
            throw new RuntimeException(e);
        }
    }

}