de.l3s.archivepig.get.Host.java Source code

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Here is the source code for de.l3s.archivepig.get.Host.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Helge Holzmann
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package de.l3s.archivepig.get;

import de.l3s.archivepig.DataEvalFunc;
import org.apache.commons.lang.StringUtils;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.logicalLayer.schema.Schema;

public class Host extends DataEvalFunc<String> {
    @Override
    public String exec(Tuple data, Object... params) throws ExecException {
        String surtUrl = get(data, "url");
        String[] parts = surtUrl.split("\\)");
        String[] segments = parts[0].split("\\,");
        String[] host = new String[segments.length];
        for (int i = 0; i < segments.length; i++) {
            host[host.length - 1 - i] = segments[i];
        }
        return StringUtils.join(host, ".");
    }

    @Override
    public Schema outputSchema(Schema input) {
        return new Schema(new Schema.FieldSchema("domain", DataType.CHARARRAY));
    }
}