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Brian Buller
2016-08-13 18:20:14 -05:00
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java/etl/.gradle/2.9/taskArtifacts/cache.properties Normal file
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#Thu Nov 19 21:34:57 CST 2015

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# Etl
We are going to do the `Transform` step of an Extract-Transform-Load.
### ETL
Extract-Transform-Load (ETL) is a fancy way of saying, "We have some crufty, legacy data over in this system, and now we need it in this shiny new system over here, so
we're going to migrate this."
(Typically, this is followed by, "We're only going to need to run this
once." That's then typically followed by much forehead slapping and
moaning about how stupid we could possibly be.)
### The goal
We're going to extract some scrabble scores from a legacy system.
The old system stored a list of letters per score:
- 1 point: "A", "E", "I", "O", "U", "L", "N", "R", "S", "T",
- 2 points: "D", "G",
- 3 points: "B", "C", "M", "P",
- 4 points: "F", "H", "V", "W", "Y",
- 5 points: "K",
- 8 points: "J", "X",
- 10 points: "Q", "Z",
The shiny new scrabble system instead stores the score per letter, which
makes it much faster and easier to calculate the score for a word. It
also stores the letters in lower-case regardless of the case of the
input letters:
- "a" is worth 1 point.
- "b" is worth 3 points.
- "c" is worth 3 points.
- "d" is worth 2 points.
- Etc.
Your mission, should you choose to accept it, is to write a program that
transforms the legacy data format to the shiny new format.
### Notes
Note that both the old and the new system use strings to represent
letters, even in languages that have a separate data type for
characters.
A final note about scoring, Scrabble is played around the world in a
variety of languages, each with its own unique scoring table. For
example, an "A" is scored at 14 in the Basque-language version of the
game while being scored at 9 in the Latin-language version.
## Source
The Jumpstart Lab team [view source](http://jumpstartlab.com)

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apply plugin: "java"
apply plugin: "eclipse"
apply plugin: "idea"
repositories {
mavenCentral()
}
dependencies {
testCompile "junit:junit:4.10"
testCompile "org.easytesting:fest-assert-core:2.0M10"
testCompile "com.google.guava:guava:16+"
}

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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta http-equiv="x-ua-compatible" content="IE=edge"/>
<title>Test results - Class EtlTest</title>
<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
<link href="../css/style.css" rel="stylesheet" type="text/css"/>
<script src="../js/report.js" type="text/javascript"></script>
</head>
<body>
<div id="content">
<h1>Class EtlTest</h1>
<div class="breadcrumbs">
<a href="../index.html">all</a> &gt;
<a href="../packages/default-package.html">default-package</a> &gt; EtlTest</div>
<div id="summary">
<table>
<tr>
<td>
<div class="summaryGroup">
<table>
<tr>
<td>
<div class="infoBox" id="tests">
<div class="counter">4</div>
<p>tests</p>
</div>
</td>
<td>
<div class="infoBox" id="failures">
<div class="counter">0</div>
<p>failures</p>
</div>
</td>
<td>
<div class="infoBox" id="ignored">
<div class="counter">0</div>
<p>ignored</p>
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<td>
<div class="infoBox" id="duration">
<div class="counter">0.038s</div>
<p>duration</p>
</div>
</td>
</tr>
</table>
</div>
</td>
<td>
<div class="infoBox success" id="successRate">
<div class="percent">100%</div>
<p>successful</p>
</div>
</td>
</tr>
</table>
</div>
<div id="tabs">
<ul class="tabLinks">
<li>
<a href="#tab0">Tests</a>
</li>
</ul>
<div id="tab0" class="tab">
<h2>Tests</h2>
<table>
<thead>
<tr>
<th>Test</th>
<th>Duration</th>
<th>Result</th>
</tr>
</thead>
<tr>
<td class="success">testFullDataset</td>
<td>0.008s</td>
<td class="success">passed</td>
</tr>
<tr>
<td class="success">testMoreKeys</td>
<td>0.001s</td>
<td class="success">passed</td>
</tr>
<tr>
<td class="success">testTransformMoreValues</td>
<td>0s</td>
<td class="success">passed</td>
</tr>
<tr>
<td class="success">testTransformOneValue</td>
<td>0.029s</td>
<td class="success">passed</td>
</tr>
</table>
</div>
</div>
<div id="footer">
<p>
<div>
<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
</label>
</div>Generated by
<a href="http://www.gradle.org">Gradle 2.9</a> at Nov 20, 2015 7:34:52 AM</p>
</div>
</div>
</body>
</html>

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#summary {
margin-top: 30px;
margin-bottom: 40px;
}
#summary table {
border-collapse: collapse;
}
#summary td {
vertical-align: top;
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.breadcrumbs, .breadcrumbs a {
color: #606060;
}
.infoBox {
width: 110px;
padding-top: 15px;
padding-bottom: 15px;
text-align: center;
}
.infoBox p {
margin: 0;
}
.counter, .percent {
font-size: 120%;
font-weight: bold;
margin-bottom: 8px;
}
#duration {
width: 125px;
}
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border: solid 2px #d0d0d0;
-moz-border-radius: 10px;
border-radius: 10px;
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width: 140px;
margin-left: 35px;
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.success, .success a {
color: #008000;
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background-color: #bbd9bb;
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.skipped, .skipped a {
color: #c09853;
}
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background-color: #ecdada;
border-color: #b60808;
}
ul.linkList {
padding-left: 0;
}
ul.linkList li {
list-style: none;
margin-bottom: 5px;
}

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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta http-equiv="x-ua-compatible" content="IE=edge"/>
<title>Test results - Test Summary</title>
<link href="css/base-style.css" rel="stylesheet" type="text/css"/>
<link href="css/style.css" rel="stylesheet" type="text/css"/>
<script src="js/report.js" type="text/javascript"></script>
</head>
<body>
<div id="content">
<h1>Test Summary</h1>
<div id="summary">
<table>
<tr>
<td>
<div class="summaryGroup">
<table>
<tr>
<td>
<div class="infoBox" id="tests">
<div class="counter">4</div>
<p>tests</p>
</div>
</td>
<td>
<div class="infoBox" id="failures">
<div class="counter">0</div>
<p>failures</p>
</div>
</td>
<td>
<div class="infoBox" id="ignored">
<div class="counter">0</div>
<p>ignored</p>
</div>
</td>
<td>
<div class="infoBox" id="duration">
<div class="counter">0.038s</div>
<p>duration</p>
</div>
</td>
</tr>
</table>
</div>
</td>
<td>
<div class="infoBox success" id="successRate">
<div class="percent">100%</div>
<p>successful</p>
</div>
</td>
</tr>
</table>
</div>
<div id="tabs">
<ul class="tabLinks">
<li>
<a href="#tab0">Packages</a>
</li>
<li>
<a href="#tab1">Classes</a>
</li>
</ul>
<div id="tab0" class="tab">
<h2>Packages</h2>
<table>
<thead>
<tr>
<th>Package</th>
<th>Tests</th>
<th>Failures</th>
<th>Ignored</th>
<th>Duration</th>
<th>Success rate</th>
</tr>
</thead>
<tbody>
<tr>
<td class="success">
<a href="packages/default-package.html">default-package</a>
</td>
<td>4</td>
<td>0</td>
<td>0</td>
<td>0.038s</td>
<td class="success">100%</td>
</tr>
</tbody>
</table>
</div>
<div id="tab1" class="tab">
<h2>Classes</h2>
<table>
<thead>
<tr>
<th>Class</th>
<th>Tests</th>
<th>Failures</th>
<th>Ignored</th>
<th>Duration</th>
<th>Success rate</th>
</tr>
</thead>
<tbody>
<tr>
<td class="success"/>
<a href="classes/EtlTest.html">EtlTest</a>
<td>4</td>
<td>0</td>
<td>0</td>
<td>0.038s</td>
<td class="success">100%</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="footer">
<p>
<div>
<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
</label>
</div>Generated by
<a href="http://www.gradle.org">Gradle 2.9</a> at Nov 20, 2015 7:34:52 AM</p>
</div>
</div>
</body>
</html>

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var tabs = {};
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta http-equiv="x-ua-compatible" content="IE=edge"/>
<title>Test results - Default package</title>
<link href="../css/base-style.css" rel="stylesheet" type="text/css"/>
<link href="../css/style.css" rel="stylesheet" type="text/css"/>
<script src="../js/report.js" type="text/javascript"></script>
</head>
<body>
<div id="content">
<h1>Default package</h1>
<div class="breadcrumbs">
<a href="../index.html">all</a> &gt; default-package</div>
<div id="summary">
<table>
<tr>
<td>
<div class="summaryGroup">
<table>
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<div class="counter">4</div>
<p>tests</p>
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<div class="counter">0</div>
<p>failures</p>
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<div class="infoBox" id="ignored">
<div class="counter">0</div>
<p>ignored</p>
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<td>
<div class="infoBox" id="duration">
<div class="counter">0.038s</div>
<p>duration</p>
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</td>
</tr>
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</div>
</td>
<td>
<div class="infoBox success" id="successRate">
<div class="percent">100%</div>
<p>successful</p>
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<tr>
<th>Class</th>
<th>Tests</th>
<th>Failures</th>
<th>Ignored</th>
<th>Duration</th>
<th>Success rate</th>
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<a href="../classes/EtlTest.html">EtlTest</a>
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<td>0</td>
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<td>0.038s</td>
<td class="success">100%</td>
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</table>
</div>
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<div>
<label class="hidden" id="label-for-line-wrapping-toggle" for="line-wrapping-toggle">Wrap lines
<input id="line-wrapping-toggle" type="checkbox" autocomplete="off"/>
</label>
</div>Generated by
<a href="http://www.gradle.org">Gradle 2.9</a> at Nov 20, 2015 7:34:52 AM</p>
</div>
</div>
</body>
</html>

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<?xml version="1.0" encoding="UTF-8"?>
<testsuite name="EtlTest" tests="4" skipped="0" failures="0" errors="0" timestamp="2015-11-20T13:34:51" hostname="kain-arch" time="0.042">
<properties/>
<testcase name="testTransformOneValue" classname="EtlTest" time="0.029"/>
<testcase name="testFullDataset" classname="EtlTest" time="0.008"/>
<testcase name="testTransformMoreValues" classname="EtlTest" time="0.0"/>
<testcase name="testMoreKeys" classname="EtlTest" time="0.001"/>
<system-out><![CDATA[]]></system-out>
<system-err><![CDATA[]]></system-err>
</testsuite>

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Manifest-Version: 1.0

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import java.util.*;
// Etl transforms a scrabble score set from the old data structure
// To the new.
public class Etl {
public Map<String, Integer> transform(Map<Integer, List<String>> old) {
Map<String, Integer> ret = new HashMap<String, Integer>();
for (Map.Entry<Integer, List<String>> entry : old.entrySet()) {
for (int i = 0; i < entry.getValue().size(); i++) {
ret.put(entry.getValue().get(i).toLowerCase(), entry.getKey());
}
}
return ret;
}
}

0
java/etl/src/test/java/.keep Normal file
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import com.google.common.collect.ImmutableMap;
import org.junit.Test;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import static org.fest.assertions.api.Assertions.assertThat;
public class EtlTest {
private final Etl etl = new Etl();
@Test
public void testTransformOneValue() {
Map<Integer, List<String>> old = ImmutableMap.of(1, Arrays.asList("A"));
Map<String, Integer> expected = ImmutableMap.of("a", 1);
assertThat(etl.transform(old)).isEqualTo(expected);
}
@Test
public void testTransformMoreValues() {
Map<Integer, List<String>> old = ImmutableMap.of(
1, Arrays.asList("A", "E", "I", "O", "U")
);
Map<String, Integer> expected = ImmutableMap.of(
"a", 1,
"e", 1,
"i", 1,
"o", 1,
"u", 1
);
assertThat(etl.transform(old)).isEqualTo(expected);
}
@Test
public void testMoreKeys() {
Map<Integer, List<String>> old = ImmutableMap.of(
1, Arrays.asList("A", "E"),
2, Arrays.asList("D", "G")
);
Map<String, Integer> expected = ImmutableMap.of(
"a", 1,
"e", 1,
"d", 2,
"g", 2
);
assertThat(etl.transform(old)).isEqualTo(expected);
}
@Test
public void testFullDataset() {
Map<Integer, List<String>> old = ImmutableMap.<Integer, List<String>>builder().
put(1, Arrays.asList("A", "E", "I", "O", "U", "L", "N", "R", "S", "T")).
put(2, Arrays.asList("D", "G")).
put(3, Arrays.asList("B", "C", "M", "P")).
put(4, Arrays.asList("F", "H", "V", "W", "Y")).
put(5, Arrays.asList("K")).
put(8, Arrays.asList("J", "X")).
put(10, Arrays.asList("Q", "Z")).
build();
Map<String, Integer> expected = ImmutableMap.<String, Integer>builder().
put("a", 1).put("b", 3).put("c", 3).put("d", 2).put("e", 1).
put("f", 4).put("g", 2).put("h", 4).put("i", 1).put("j", 8).
put("k", 5).put("l", 1).put("m", 3).put("n", 1).put("o", 1).
put("p", 3).put("q", 10).put("r", 1).put("s", 1).put("t", 1).
put("u", 1).put("v", 4).put("w", 4).put("x", 8).put("y", 4).
put("z", 10).build();
assertThat(etl.transform(old)).isEqualTo(expected);
}
}