IPTE-22: add static h2 version to application Properties and add export button with save file dialog

Author: Martin Plieske

pom.xml

@@ -55,6 +55,8 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
 
+	<h2.version>1.4.197</h2.version>
+
     <maven-dependency-check.version>6.0.5</maven-dependency-check.version>
     <!-- USING HTML,XML (comma-separated list) did not work with plugin version 5.1.0 -->
     <maven-dependency-check.format>ALL</maven-dependency-check.format>
@@ -72,7 +74,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.197</version>
+      <version>${h2.version}</version>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
@@ -171,6 +173,13 @@
       </plugin>
 
     </plugins>
+    
+    <!-- resources>
+      <resource>
+        <filtering>true</filtering>
+        <directory>src/main/resources</directory>
+      </resource>
+    </resources -->
   </build>
 
   <reporting>

src/main/java/de/doubleslash/keeptime/view/SettingsController.java

@@ -16,8 +16,15 @@
 
 package de.doubleslash.keeptime.view;
 
+import java.io.File;
 import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.sql.SQLException;
+import java.util.Properties;
 
+import org.h2.tools.Script;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -43,6 +50,8 @@
 import javafx.scene.layout.AnchorPane;
 import javafx.scene.layout.Region;
 import javafx.scene.paint.Color;
+import javafx.stage.FileChooser;
+import javafx.stage.FileChooser.ExtensionFilter;
 import javafx.stage.Modality;
 import javafx.stage.Stage;
 
@@ -91,6 +100,9 @@ public class SettingsController {
    @FXML
    private Button cancelButton;
 
+   @FXML
+   private Button exportButton;
+
    @FXML
    private Button aboutButton;
 
@@ -136,6 +148,8 @@ private void initialize() {
          globalKeyloggerLabel.setDisable(true);
       }
 
+      initExportButton();
+
       LOG.debug("saveButton.setOnAction");
       saveButton.setOnAction(ae -> {
          LOG.info("Save clicked");
@@ -218,6 +232,35 @@ private void initialize() {
       });
    }
 
+   private void initExportButton() {
+      LOG.debug("Initialize exportButton.");
+      exportButton.setOnAction(actionEvent -> {
+         LOG.info("Button pressed: exportButton");
+
+         final Properties properties = new Properties();
+         try (InputStream resourceStream = SettingsController.class.getResourceAsStream("/application.properties")) {
+            properties.load(resourceStream);
+
+            final FileChooser fileChooser = new FileChooser();
+            fileChooser.setInitialDirectory(Paths.get(".").toFile());
+            final String h2Version = properties.getProperty("h2.version");
+            fileChooser.setInitialFileName(String.format("KeepTime_database-export_H2-version-%s.sql", h2Version));
+            fileChooser.getExtensionFilters().add(new ExtensionFilter("SQL scrip files.", "*.sql"));
+
+            final File fileToSave = fileChooser.showSaveDialog(thisStage);
+            Files.deleteIfExists(Paths.get(fileToSave.getAbsolutePath()));
+
+            final String url = properties.getProperty("spring.datasource.url");
+            final String username = properties.getProperty("spring.datasource.username");
+            final String password = properties.getProperty("spring.datasource.password");
+
+            Script.process(url, username, password, fileToSave.getAbsolutePath(), "", "");
+         } catch (final SQLException | IOException e) {
+            LOG.error("Could not export db to script file.", e);
+         }
+      });
+   }
+
    void update() {
       // needed to close stage on esc
       settingsRoot.requestFocus();

src/main/resources/application.properties

@@ -2,6 +2,8 @@
 spring.h2.console.enabled=true
 spring.h2.console.path=/h2
 
+h2.version=1.4.197
+
 # Datasource
 spring.datasource.url=jdbc:h2:file:./db/keeptime-h2-db;DB_CLOSE_ON_EXIT=FALSE
 spring.datasource.username=sa

src/main/resources/layouts/settings.fxml

@@ -296,6 +296,7 @@
                         <Font name="Open Sans Regular" size="12.0" />
                      </font>
                   </Button>
+                  <Button fx:id="exportButton" mnemonicParsing="false" text="Export" />
                   <Region HBox.hgrow="ALWAYS" />
                   <Button fx:id="aboutButton" mnemonicParsing="false" prefHeight="25.0" prefWidth="70.0" text="About" HBox.hgrow="ALWAYS" />
                </children>