com.metamx.druid.query.search.FragmentSearchQuerySpec.java Source code

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Here is the source code for com.metamx.druid.query.search.FragmentSearchQuerySpec.java

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/*
 * 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.query.search;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Function;
import com.google.common.collect.Lists;

import java.nio.ByteBuffer;
import java.util.List;

/**
 */
public class FragmentSearchQuerySpec implements SearchQuerySpec {
    private static final byte CACHE_TYPE_ID = 0x2;

    private final List<String> values;
    private final SearchSortSpec sortSpec;

    @JsonCreator
    public FragmentSearchQuerySpec(@JsonProperty("values") List<String> values,
            @JsonProperty("sort") SearchSortSpec sortSpec) {
        this.values = Lists.transform(values, new Function<String, String>() {
            @Override
            public String apply(String s) {
                return s.toLowerCase();
            }
        });
        this.sortSpec = (sortSpec == null) ? new LexicographicSearchSortSpec() : sortSpec;
    }

    @JsonProperty
    public List<String> getValues() {
        return values;
    }

    @JsonProperty("sort")
    @Override
    public SearchSortSpec getSearchSortSpec() {
        return sortSpec;
    }

    @Override
    public boolean accept(String dimVal) {
        for (String value : values) {
            if (dimVal == null || !dimVal.toLowerCase().contains(value)) {
                return false;
            }
        }
        return true;
    }

    @Override
    public byte[] getCacheKey() {
        final byte[][] valuesBytes = new byte[values.size()][];
        int valuesBytesSize = 0;
        int index = 0;
        for (String value : values) {
            valuesBytes[index] = value.getBytes();
            valuesBytesSize += valuesBytes[index].length;
            ++index;
        }

        final ByteBuffer queryCacheKey = ByteBuffer.allocate(1 + valuesBytesSize).put(CACHE_TYPE_ID);

        for (byte[] bytes : valuesBytes) {
            queryCacheKey.put(bytes);
        }

        return queryCacheKey.array();
    }

    @Override
    public String toString() {
        return "FragmentSearchQuerySpec{" + "values=" + values + ", sortSpec=" + sortSpec + "}";
    }
}