Initial: Apache-POI

Copied apache-poi project.

apache-poi/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>es.implementations.frameworks</groupId>
+  <artifactId>Apache-poi</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <name>Apache POI</name>
+  <description>Excel parser usage</description>
+
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>3.17</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/junit/junit -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.assertj/assertj-core -->
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.8.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.mockito/mockito-all -->
+		<dependency>
+		    <groupId>org.mockito</groupId>
+		    <artifactId>mockito-all</artifactId>
+		    <version>1.10.19</version>
+		    <scope>test</scope>
+		</dependency>
+
+		<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
+		<dependency>
+		    <groupId>org.projectlombok</groupId>
+		    <artifactId>lombok</artifactId>
+		    <version>1.16.18</version>
+		    <scope>provided</scope>
+		</dependency>
+  </dependencies>
+</project>

apache-poi/src/main/java/es/apache/poi/ExcelParser.java

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+package es.apache.poi;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.Color;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.xssf.usermodel.XSSFColor;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+
+import lombok.Getter;
+
+/**
+ * Attention! There is a difference btw. excel files < 2007 and > 2007. Look the usage of POI for
+ * both.
+ *
+ * @author msanchez
+ * @since Oct 19, 2017 - 1.0.0
+ */
+public class ExcelParser {
+  @Getter
+  private FileInputStream inputStream;
+
+  private Workbook workbook;
+
+  @Getter
+  private String output;
+
+  /**
+   * Saves the excel file contents into a FileInputStream.
+   *
+   * @param fileName
+   *          Excel file which we want to parse.
+   * @author msanchez
+   * @since Oct 19, 2017
+   */
+  public void saveFileIntoStream(final String fileName) {
+    try {
+      final URL resource = this.getClass().getResource(fileName);
+      final File file = new File(resource.toURI());
+      this.inputStream = new FileInputStream(file);
+    } catch (final Exception ex) {
+      ex.printStackTrace();
+    }
+  }
+
+  /**
+   * Parses the contents of the file loaded into this parser instance.
+   *
+   * @throws IOException
+   * @author msanchez
+   * @since Oct 19, 2017 - 1.0.0
+   */
+  public void parseExcel() throws IOException {
+    final Sheet firstSheet = this.setUp();
+    this.workRowsInSheet(firstSheet);
+    this.tearDown();
+  }
+
+  private Sheet setUp() throws IOException {
+    this.output = new String();
+    this.workbook = new XSSFWorkbook(this.inputStream);
+    return this.workbook.getSheetAt(0); // Hardcoded! must change this so it parses all the sheets.
+  }
+
+  private void workRowsInSheet(final Sheet sheet) {
+    for (final Row excelRow : sheet) {
+      this.workSingleRow(excelRow);
+    }
+  }
+
+  private void workSingleRow(final Row row) {
+    for (final Cell cell : row) {
+      this.workSingleCell(cell);
+    }
+    this.output += "\n";
+  }
+
+  private void workSingleCell(final Cell cell) {
+    final String value = cell.toString();
+    final String rgb = this.extractRGBColorFromCell(cell);
+    this.output += value + ", " + rgb + "; ";
+  }
+
+  private String extractRGBColorFromCell(final Cell cell) {
+    final Color color = cell.getCellStyle().getFillForegroundColorColor();
+    return color == null ? "FFFFFFFF" : XSSFColor.toXSSFColor(color).getARGBHex();
+  }
+
+  private void tearDown() throws IOException {
+    this.workbook.close();
+  }
+}

apache-poi/src/test/java/es/apache/poi/ExcelParserTest.java

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+package es.apache.poi;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.runners.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class ExcelParserTest {
+  private final String FILE_NAME = "excel-file.xlsx";
+
+  @InjectMocks
+  private ExcelParser parser;
+
+  @Before
+  public void setUp() {
+    this.parser.saveFileIntoStream(this.FILE_NAME);
+  }
+
+  /**
+   * @author msanchez
+   * @since Oct 19, 2017 - 1.0.0
+   */
+  @Test
+  @Ignore
+  public void whenNeededThenShowDebugOutput() throws IOException {
+    // Given
+
+    // When
+    this.parser.parseExcel();
+    final String output = this.parser.getOutput();
+
+    // Then
+    assertThat(output).isNotEmpty();
+    System.out.println(output);
+  }
+
+  /**
+   * @author msanchez
+   * @since Oct 19, 2017 - 1.0.0
+   */
+  @Test
+  public void fileExists() {
+    // Given
+    final File file = new File(this.getClass().getResource(this.FILE_NAME).getPath());
+
+    // When
+    final boolean exists = file.exists();
+
+    // Then
+    assertThat(exists).isTrue();
+  }
+
+  /**
+   * @author msanchez
+   * @since Oct 19, 2017 - 1.0.0
+   */
+  @Test
+  public void whenOpenFileThenInputStreamIsNotEmpty() throws IOException {
+    // Given
+    FileInputStream inputStream;
+
+    // When
+    inputStream = this.parser.getInputStream();
+
+    // Then
+    assertThat(inputStream.available()).isNotZero();
+  }
+}