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‎pom.xml‎

Lines changed: 76 additions & 71 deletions
Original file line numberDiff line numberDiff line change
@@ -1,71 +1,76 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<version>1.0-SNAPSHOT</version>
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<artifactId>helloworld</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.sparkjava</groupId>
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<artifactId>spark-core</artifactId>
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<version>2.2</version>
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</dependency>
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<dependency>
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<groupId>com.sparkjava</groupId>
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<artifactId>spark-template-freemarker</artifactId>
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<version>2.0.0</version>
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</dependency>
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<version>9.4-1201-jdbc4</version>
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</dependency>
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<dependency>
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<groupId>com.heroku.sdk</groupId>
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<artifactId>heroku-jdbc</artifactId>
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<version>0.1.1</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>2.5.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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<optimize>true</optimize>
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<debug>true</debug>
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</configuration>
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</plugin>
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<plugin>
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<artifactId>maven-assembly-plugin</artifactId>
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<version>2.3</version>
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<configuration>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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<finalName>helloworld</finalName>
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<appendAssemblyId>false</appendAssemblyId>
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<archive>
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<manifest>
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<mainClass>Main</mainClass>
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</manifest>
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</archive>
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</configuration>
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<executions>
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<execution>
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<id>build-jar-with-dependencies</id>
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<phase>package</phase>
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<goals>
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<goal>single</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<version>1.0-SNAPSHOT</version>
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<artifactId>helloworld</artifactId>
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<dependencies>
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<dependency>
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<groupId>com.sparkjava</groupId>
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<artifactId>spark-core</artifactId>
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<version>2.2</version>
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</dependency>
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<dependency>
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<groupId>com.sparkjava</groupId>
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<artifactId>spark-template-freemarker</artifactId>
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<version>2.0.0</version>
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</dependency>
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<version>9.4-1201-jdbc4</version>
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</dependency>
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<dependency>
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<groupId>com.heroku.sdk</groupId>
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<artifactId>heroku-jdbc</artifactId>
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<version>0.1.1</version>
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</dependency>
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<dependency>
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<groupId>org.jscience</groupId>
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<artifactId>jscience</artifactId>
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<version>4.3.1</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>2.5.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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<optimize>true</optimize>
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<debug>true</debug>
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</configuration>
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</plugin>
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<plugin>
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<artifactId>maven-assembly-plugin</artifactId>
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<version>2.3</version>
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<configuration>
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<descriptorRefs>
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<descriptorRef>jar-with-dependencies</descriptorRef>
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</descriptorRefs>
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<finalName>helloworld</finalName>
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<appendAssemblyId>false</appendAssemblyId>
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<archive>
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<manifest>
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<mainClass>Main</mainClass>
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</manifest>
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</archive>
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</configuration>
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<executions>
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<execution>
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<id>build-jar-with-dependencies</id>
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<phase>package</phase>
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<goals>
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<goal>single</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/Main.java‎

Lines changed: 81 additions & 64 deletions
Original file line numberDiff line numberDiff line change
@@ -1,64 +1,81 @@
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import java.sql.*;
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import java.util.HashMap;
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import java.util.ArrayList;
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import java.util.Map;
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import java.net.URI;
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import java.net.URISyntaxException;
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import static spark.Spark.*;
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import spark.template.freemarker.FreeMarkerEngine;
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import spark.ModelAndView;
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import static spark.Spark.get;
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import com.heroku.sdk.jdbc.DatabaseUrl;
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public class Main {
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public static void main(String[] args) {
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port(Integer.valueOf(System.getenv("PORT")));
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staticFileLocation("/public");
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get("/hello", (request, response) -> {
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Map<String, Object> attributes = new HashMap<>();
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attributes.put("message", "Hello World!");
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return new ModelAndView(attributes, "hello.ftl");
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}, new FreeMarkerEngine());
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get("/", (request, response) -> {
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Map<String, Object> attributes = new HashMap<>();
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attributes.put("message", "Hello World!");
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return new ModelAndView(attributes, "index.ftl");
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}, new FreeMarkerEngine());
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get("/db", (req, res) -> {
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Connection connection = null;
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Map<String, Object> attributes = new HashMap<>();
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try {
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connection = DatabaseUrl.extract().getConnection();
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Statement stmt = connection.createStatement();
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stmt.executeUpdate("CREATE TABLE IF NOT EXISTS ticks (tick timestamp)");
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stmt.executeUpdate("INSERT INTO ticks VALUES (now())");
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ResultSet rs = stmt.executeQuery("SELECT tick FROM ticks");
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ArrayList<String> output = new ArrayList<String>();
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while (rs.next()) {
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output.add( "Read from DB: " + rs.getTimestamp("tick"));
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}
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attributes.put("results", output);
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return new ModelAndView(attributes, "db.ftl");
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} catch (Exception e) {
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attributes.put("message", "There was an error: " + e);
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return new ModelAndView(attributes, "error.ftl");
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} finally {
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if (connection != null) try{connection.close();} catch(SQLException e){}
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}
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}, new FreeMarkerEngine());
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}
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64-
}
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import java.sql.*;
2+
import java.util.HashMap;
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import java.util.ArrayList;
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import java.util.Map;
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import javax.measure.quantity.Energy;
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import javax.measure.quantity.Mass;
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import javax.measure.unit.NonSI;
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import javax.measure.unit.SI;
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import org.jscience.physics.amount.Amount;
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import org.jscience.physics.model.RelativisticModel;
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import java.net.URI;
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import java.net.URISyntaxException;
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import static spark.Spark.*;
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import spark.template.freemarker.FreeMarkerEngine;
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import spark.ModelAndView;
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import static spark.Spark.get;
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import com.heroku.sdk.jdbc.DatabaseUrl;
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public class Main {
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public static void main(String[] args) {
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port(Integer.valueOf(System.getenv("PORT")));
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staticFileLocation("/public");
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get("/hello", (request, response) -> {
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Map<String, Object> attributes = new HashMap<>();
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// attributes.put("message", "Hello World!");
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attributes.put("message", "Spark i Freemaker w akcji!");
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RelativisticModel.select();
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Amount<Mass> m = Amount.valueOf("12 GeV").to(SI.KILOGRAM);
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String massMessage = "E=mc^2: 12 GeV = " + m.toString();
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attributes.put("massMessage", massMessage);
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Amount<Energy> e = Amount.valueOf("100 kg").to(SI.GIGA(NonSI.ELECTRON_VOLT));
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String energyMessage = "E=mc^2: 100 kg = " + e.toString();
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attributes.put("energyMessage", energyMessage);
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return new ModelAndView(attributes, "hello.ftl");
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}, new FreeMarkerEngine());
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get("/", (request, response) -> {
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Map<String, Object> attributes = new HashMap<>();
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attributes.put("message", "Hello World!");
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return new ModelAndView(attributes, "index.ftl");
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}, new FreeMarkerEngine());
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get("/db", (req, res) -> {
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Connection connection = null;
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Map<String, Object> attributes = new HashMap<>();
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try {
57+
connection = DatabaseUrl.extract().getConnection();
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Statement stmt = connection.createStatement();
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stmt.executeUpdate("CREATE TABLE IF NOT EXISTS ticks (tick timestamp)");
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stmt.executeUpdate("INSERT INTO ticks VALUES (now())");
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ResultSet rs = stmt.executeQuery("SELECT tick FROM ticks");
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ArrayList<String> output = new ArrayList<String>();
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while (rs.next()) {
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output.add( "Read from DB: " + rs.getTimestamp("tick"));
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}
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attributes.put("results", output);
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return new ModelAndView(attributes, "db.ftl");
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} catch (Exception e) {
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attributes.put("message", "There was an error: " + e);
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return new ModelAndView(attributes, "error.ftl");
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} finally {
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if (connection != null) try{connection.close();} catch(SQLException e){}
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}
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}, new FreeMarkerEngine());
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}
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}

‎src/main/resources/spark/template/freemarker/hello.ftl‎

Lines changed: 1 addition & 0 deletions
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</div>
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<hr>
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${massMessage}
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</div>
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