com.aliyun.odps.mapred.bridge.TestUtils.java Source code

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Here is the source code for com.aliyun.odps.mapred.bridge.TestUtils.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.
 */

package com.aliyun.odps.mapred.bridge;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.aliyun.odps.FieldSchema;
import com.aliyun.odps.OdpsType;
import com.aliyun.odps.io.NullWritable;
import com.aliyun.odps.io.Writable;

import difflib.Delta;
import difflib.DiffUtils;
import difflib.Patch;

public class TestUtils {

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

    private static List<String> fileToLines(String path) {
        List<String> lines = new LinkedList<String>();
        String line = "";
        try {
            BufferedReader in = new BufferedReader(new FileReader(path));
            while ((line = in.readLine()) != null) {
                lines.add(line);
            }
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return lines;
    }

    public static boolean verifySql(String expectedFileName, String sql) {
        List<String> original = fileToLines("data/" + expectedFileName);
        List<String> revised = Arrays.asList(sql.split("\n"));

        LOG.info(sql);
        // Compute diff. Get the Patch object. Patch is the container for computed
        // deltas.
        Patch patch = DiffUtils.diff(original, revised);

        if (patch.getDeltas().isEmpty()) {
            return true;
        } else {
            for (Delta delta : patch.getDeltas()) {
                System.out.println(delta.toString());
            }
            return false;
        }
    }

    public static com.aliyun.odps.Record mockOldRecord(OdpsType[] types, String[] names, final Writable[] values) {
        assert types.length == names.length;

        final FieldSchema[] schema = new FieldSchema[types.length];
        final Map<String, Integer> name2Idx = new HashMap<String, Integer>();
        for (int i = 0; i < names.length; i++) {
            name2Idx.put(names[i], i);
            schema[i] = new FieldSchema(names[i], types[i].toString());
        }

        return new com.aliyun.odps.Record() {

            @Override
            public int size() {
                return schema.length;
            }

            @Override
            public boolean isNull(int idx) {
                return values[idx] == null || values[idx] instanceof NullWritable;
            }

            @Override
            public boolean isNull(String fieldName) throws IOException {
                return isNull(name2Idx.get(fieldName));
            }

            @Override
            public Writable get(int index) {
                return values[index];
            }

            @Override
            public Writable get(String fieldName) throws IOException {
                return get(name2Idx.get(fieldName));
            }

            @Override
            public void set(int index, Writable value) {
                values[index] = value;
            }

            @Override
            public void set(String fieldName, Writable value) throws IOException {
                set(name2Idx.get(fieldName), value);
            }

            @Override
            public void set(Writable[] values) throws IOException {
                throw new UnsupportedOperationException();
            }

            @Override
            public FieldSchema getField(int index) {
                return schema[index];
            }

            @Override
            public FieldSchema[] getFields() {
                return schema;
            }

            @Override
            public Writable[] getAll() {
                return values;
            }

            @Override
            public String toDelimitedString() {
                throw new UnsupportedOperationException();
            }

            @Override
            public String toDelimitedString(char delim, String nullIndicator) {
                throw new UnsupportedOperationException();
            }

            @Override
            public void fromDelimitedString(String delimStr) throws IOException {
                throw new UnsupportedOperationException();
            }

            @Override
            public void fromDelimitedString(String delimStr, char delim, String nullIndicator) throws IOException {
                throw new UnsupportedOperationException();
            }

            @Override
            public com.aliyun.odps.Record clone() {
                return null;
            }
        };
    }
}