org.apache.hadoop.hbase.regionserver.ccindex.IndexMaintenanceUtils.java Source code

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Here is the source code for org.apache.hadoop.hbase.regionserver.ccindex.IndexMaintenanceUtils.java

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/**
 * Copyright 2009 The Apache Software Foundation
 *
 * 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.hadoop.hbase.regionserver.ccindex;

import java.util.SortedMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.ColumnNameParseException;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HStoreKey;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.ccindex.IndexSpecification;
import org.apache.hadoop.hbase.client.ccindex.IndexedTable;
import org.apache.hadoop.hbase.client.ccindex.IndexedTableDescriptor;
import org.apache.hadoop.hbase.util.Bytes;

/**
 * Singleton class for index maintence logic.
 */
public class IndexMaintenanceUtils {

    private static final Log LOG = LogFactory.getLog(IndexMaintenanceUtils.class);

    public static Put createIndexUpdateMultTable(final IndexSpecification indexSpec, final byte[] row,
            final SortedMap<byte[], byte[]> columnValues, byte[] indexedColumn) {
        for (byte[] col : indexSpec.getIndexedColumns()) {
            if (columnValues.get(col) != null) {

            }
        }

        return null;
    }

    public static Put addColumnValue(final IndexSpecification indexSpec,
            final SortedMap<byte[], byte[]> columnValues, Put put) {
        try {
            for (byte[] col : indexSpec.getAdditionalColumns()) {
                byte[] val = columnValues.get(col);
                if (val != null) {
                    byte[][] colSeperated = HStoreKey.parseColumn(col);
                    put.add(colSeperated[0], colSeperated[1], val);
                }
            }
        } catch (ColumnNameParseException e) {
            throw new RuntimeException(e);
        }
        return put;
    }

    public static Put createIndexUpdateWithoutUpdateIndex(final IndexSpecification indexSpec, final byte[] row,
            final SortedMap<byte[], byte[]> columnValues) {
        byte[] indexRow = indexSpec.getKeyGenerator().createIndexKey(row, columnValues);
        Put update = new Put(indexRow);

        // update.add(IndexedTable.INDEX_COL_FAMILY_NAME,
        // IndexedTable.INDEX_BASE_ROW, row);

        try {
            for (byte[] col : indexSpec.getAdditionalColumns()) {
                byte[] val = columnValues.get(col);
                if (val != null) {
                    byte[][] colSeperated = HStoreKey.parseColumn(col);
                    update.add(colSeperated[0], colSeperated[1], val);
                }
            }
        } catch (ColumnNameParseException e) {
            throw new RuntimeException(e);
        }

        return update;
    }

    public static Put createIndexUpdate(final IndexSpecification indexSpec, final byte[] row,
            final SortedMap<byte[], byte[]> columnValues) {
        byte[] indexRow = indexSpec.getKeyGenerator().createIndexKey(row, columnValues);
        Put update = new Put(indexRow);

        // update.add(IndexedTable.INDEX_COL_FAMILY_NAME,
        // IndexedTable.INDEX_BASE_ROW, row);

        try {
            for (byte[] col : indexSpec.getIndexedColumns()) {
                byte[] val = columnValues.get(col);
                if (val == null) {
                    throw new RuntimeException("Unexpected missing column value. [" + Bytes.toString(col) + "]");
                }
                byte[][] colSeperated = HStoreKey.parseColumn(col);
                update.add(colSeperated[0], colSeperated[1], val);
            }

            for (byte[] col : indexSpec.getAdditionalColumns()) {
                byte[] val = columnValues.get(col);
                if (val != null) {
                    byte[][] colSeperated = HStoreKey.parseColumn(col);
                    update.add(colSeperated[0], colSeperated[1], val);
                }
            }
        } catch (ColumnNameParseException e) {
            throw new RuntimeException(e);
        }

        return update;
    }

    public static Put createBaseCCTUpdate(final byte[] row, final SortedMap<byte[], byte[]> columnValues,
            final IndexedTableDescriptor des) {

        Put update = new Put(row);

        // update.add(IndexedTable.INDEX_COL_FAMILY_NAME,
        // IndexedTable.INDEX_BASE_ROW, row);
        try {
            for (IndexSpecification spec : des.getIndexes()) {
                for (byte[] col : spec.getIndexedColumns()) {
                    byte[] val = columnValues.get(col);
                    if (val != null) {
                        byte[][] colSeperated = HStoreKey.parseColumn(col);
                        update.add(colSeperated[0], colSeperated[1], val);
                    }
                }
            }

        } catch (ColumnNameParseException e) {
            throw new RuntimeException(e);
        }

        return update;
    }

    public static Put createCCTUpdate(final IndexSpecification indexSpec, final byte[] row,
            final SortedMap<byte[], byte[]> columnValues, final IndexedTableDescriptor des) {
        byte[] indexRow = indexSpec.getKeyGenerator().createIndexKey(row, columnValues);
        Put update = new Put(indexRow);

        // update.add(IndexedTable.INDEX_COL_FAMILY_NAME,
        // IndexedTable.INDEX_BASE_ROW, row);
        try {
            for (IndexSpecification spec : des.getIndexes()) {
                for (byte[] col : spec.getIndexedColumns()) {
                    byte[] val = columnValues.get(col);
                    if (val != null) {
                        byte[][] colSeperated = HStoreKey.parseColumn(col);
                        update.add(colSeperated[0], colSeperated[1], val);
                    }
                }
            }

        } catch (ColumnNameParseException e) {
            throw new RuntimeException(e);
        }

        return update;
    }

    public static Put createOrgUpdate(final byte[] row, final SortedMap<byte[], byte[]> columnValues) {
        byte[] indexRow = row;
        Put update = null;
        update = new Put(indexRow);
        for (byte[] col : columnValues.keySet()) {
            try {
                byte[] val = columnValues.get(col);
                byte[][] colSeperated = HStoreKey.parseColumn(col);
                update.add(colSeperated[0], colSeperated[1], val);
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                continue;
            }
        }

        return update;
    }

    /**
     * Ask if this update does apply to the index.
     * 
     * @param indexSpec
     * @param columnValues
     * @return true if possibly apply.
     */
    public static boolean doesApplyToIndex(final IndexSpecification indexSpec,
            final SortedMap<byte[], byte[]> columnValues) {

        for (byte[] neededCol : indexSpec.getIndexedColumns()) {
            if (!columnValues.containsKey(neededCol)) {
                LOG.debug("Index [" + indexSpec.getIndexId() + "] can't be updated because ["
                        + Bytes.toString(neededCol) + "] is missing");
                return false;
            }
        }
        return true;
    }
}