com.metamx.druid.index.column.SimpleColumn.java Source code

Introduction

Here is the source code for com.metamx.druid.index.column.SimpleColumn.java

Source

/*
 * Druid - a distributed column store.
 * Copyright (C) 2012  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package com.metamx.druid.index.column;

import com.google.common.base.Supplier;
import com.google.common.io.Closeables;

/**
 */
class SimpleColumn implements Column {
    private final ColumnCapabilities capabilities;
    private final Supplier<DictionaryEncodedColumn> dictionaryEncodedColumn;
    private final Supplier<RunLengthColumn> runLengthColumn;
    private final Supplier<GenericColumn> genericColumn;
    private final Supplier<ComplexColumn> complexColumn;
    private final Supplier<BitmapIndex> bitmapIndex;
    private final Supplier<SpatialIndex> spatialIndex;

    SimpleColumn(ColumnCapabilities capabilities, Supplier<DictionaryEncodedColumn> dictionaryEncodedColumn,
            Supplier<RunLengthColumn> runLengthColumn, Supplier<GenericColumn> genericColumn,
            Supplier<ComplexColumn> complexColumn, Supplier<BitmapIndex> bitmapIndex,
            Supplier<SpatialIndex> spatialIndex) {
        this.capabilities = capabilities;
        this.dictionaryEncodedColumn = dictionaryEncodedColumn;
        this.runLengthColumn = runLengthColumn;
        this.genericColumn = genericColumn;
        this.complexColumn = complexColumn;
        this.bitmapIndex = bitmapIndex;
        this.spatialIndex = spatialIndex;
    }

    @Override
    public ColumnCapabilities getCapabilities() {
        return capabilities;
    }

    @Override
    public int getLength() {
        GenericColumn column = null;
        try {
            column = genericColumn.get();
            return column.length();
        } finally {
            Closeables.closeQuietly(column);
        }
    }

    @Override
    public DictionaryEncodedColumn getDictionaryEncoding() {
        return dictionaryEncodedColumn == null ? null : dictionaryEncodedColumn.get();
    }

    @Override
    public RunLengthColumn getRunLengthColumn() {
        return runLengthColumn == null ? null : runLengthColumn.get();
    }

    @Override
    public GenericColumn getGenericColumn() {
        return genericColumn == null ? null : genericColumn.get();
    }

    @Override
    public ComplexColumn getComplexColumn() {
        return complexColumn == null ? null : complexColumn.get();
    }

    @Override
    public BitmapIndex getBitmapIndex() {
        return bitmapIndex == null ? null : bitmapIndex.get();
    }

    @Override
    public SpatialIndex getSpatialIndex() {
        return spatialIndex == null ? null : spatialIndex.get();
    }
}