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robertpatrickrobertpatrick
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initial commit of quickstart-supporting code (#234)
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‎samples/quickstart/app/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Copyright (c) 2020, 2023, Oracle and/or its affiliates. -->
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<!-- Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl. -->
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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/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.oracle.weblogic.example</groupId>
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<artifactId>todo</artifactId>
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<version>0.1-SNAPSHOT</version>
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<packaging>war</packaging>
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<name>todo</name>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>javax.ws.rs</groupId>
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<artifactId>javax.ws.rs-api</artifactId>
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<version>2.1.1</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>javax.json</groupId>
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<artifactId>javax.json-api</artifactId>
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<version>1.1.4</version>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>
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<finalName>todo</finalName>
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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-enforcer-plugin</artifactId>
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<version>3.2.1</version>
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<executions>
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<execution>
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<id>enforce-build-environment</id>
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<goals>
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<goal>enforce</goal>
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</goals>
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<configuration>
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<rules>
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<requireJavaVersion>
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<version>1.8.0</version>
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<message>You must use JDK 8 to build the project WebLogic 12.2.1.4 only supports JDK 8</message>
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</requireJavaVersion>
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</rules>
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</configuration>
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</execution>
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</executions>
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</plugin>
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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>3.11.0</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-war-plugin</artifactId>
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<version>3.3.2</version>
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</plugin>
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</plugins>
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</build>
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</project>

‎samples/quickstart/app/src/main/java/org/todo/services/TodoListApplication.java‎

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// Copyright (c) 2020, 2023, Oracle and/or its affiliates.
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// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
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package org.todo.services;
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import java.util.HashSet;
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import java.util.Set;
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import javax.ws.rs.ApplicationPath;
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import javax.ws.rs.core.Application;
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import org.todo.services.resource.ItemResource;
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import org.todo.services.resource.ItemsResource;
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@ApplicationPath("/rest")
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public class TodoListApplication extends Application {
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public Set<Class<?>> getClasses() {
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Set<Class<?>> s = new HashSet<>();
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s.add(ItemsResource.class);
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s.add(ItemResource.class);
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return s;
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}
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}

‎samples/quickstart/app/src/main/java/org/todo/services/entity/Item.java‎

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// Copyright (c) 2020, 2023, Oracle and/or its affiliates.
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// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
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package org.todo.services.entity;
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import javax.json.Json;
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import javax.json.JsonObject;
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public class Item {
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private int key;
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private String description;
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private boolean complete;
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public Item(int id) {
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key = id;
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complete = false;
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}
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public int id() {
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return key;
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}
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public String desc() {
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return description;
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}
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public Item desc(String value) {
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description = value;
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return this;
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}
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public boolean done() {
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return complete;
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}
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public Item done(boolean value) {
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complete = value;
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return this;
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}
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public JsonObject toJson() {
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return Json.createObjectBuilder()
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.add("id", id())
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.add( "description", desc())
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.add( "done", done())
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.build();
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}
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}

‎samples/quickstart/app/src/main/java/org/todo/services/resource/ItemResource.java‎

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// Copyright (c) 2020, 2023, Oracle and/or its affiliates.
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// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
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package org.todo.services.resource;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import javax.json.JsonObject;
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import javax.naming.NamingException;
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import javax.ws.rs.DELETE;
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import javax.ws.rs.GET;
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import javax.ws.rs.PUT;
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import javax.ws.rs.Path;
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import javax.ws.rs.PathParam;
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import javax.ws.rs.Produces;
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import org.todo.services.entity.Item;
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@Path("/item")
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public class ItemResource {
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public final static String selectSql = "select task, completed from ToDos where taskId = %s";
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public final static String deleteSql = "delete from ToDos where taskId = %s";
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public final static String insertSql = "insert into ToDos(task, completed) values('%s', false);";
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public final static String updateSql = "update ToDos set completed = %s where taskId = %s";
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@GET
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@Path("/{id}")
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@Produces("application/json")
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public JsonObject item(@PathParam("id") String id) {
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Item result = null;
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try (Connection conn = ItemsResource.datasource().getConnection()) {
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Statement statement = conn.createStatement();
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String queryStr = String.format(selectSql, id);
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System.out.println(queryStr);
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ResultSet resultSet = statement.executeQuery(queryStr);
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if (resultSet.next()) {
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String task = resultSet.getString("task");
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boolean complete = resultSet.getBoolean("completed");
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result = new Item(Integer.parseInt(id)).desc(task).done(complete);
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}
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} catch (SQLException | NamingException ex) {
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ex.printStackTrace();
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}
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return result == null ? null : result.toJson();
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}
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@DELETE
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@Path("/{id}")
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public void delete(@PathParam("id") String id) {
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runQuery(String.format(deleteSql, id));
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}
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@PUT
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@Path("/{taskDescription}")
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public void addNewItem(@PathParam("taskDescription") String description) {
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runQuery(String.format(insertSql, description));
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}
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@PUT
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@Path("/{id}/{status}")
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public void updateStatus(@PathParam("id") String id, @PathParam("status") String status) {
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runQuery(String.format(updateSql, id, status));
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}
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private void runQuery(String query) {
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try (Connection conn = ItemsResource.datasource().getConnection()) {
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Statement statement = conn.createStatement();
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System.out.println(query);
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statement.executeUpdate(query);
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} catch (SQLException | NamingException ex) {
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ex.printStackTrace();
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}
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}
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}

‎samples/quickstart/app/src/main/java/org/todo/services/resource/ItemsResource.java‎

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// Copyright (c) 2020, 2023, Oracle and/or its affiliates.
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// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
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package org.todo.services.resource;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.util.ArrayList;
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import java.util.List;
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import javax.json.Json;
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import javax.json.JsonArray;
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import javax.json.JsonArrayBuilder;
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import javax.naming.InitialContext;
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import javax.naming.NamingException;
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import javax.sql.DataSource;
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import javax.ws.rs.GET;
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import javax.ws.rs.Path;
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import javax.ws.rs.Produces;
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import javax.ws.rs.core.MediaType;
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import javax.ws.rs.core.Response;
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import org.todo.services.entity.Item;
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/**
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* REST service for the To-Do list application using MySQL DB.
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* /items retrieves the full list of tasks
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* /items/init drops the table, creates the table, and loads the table with some starting tasks
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*/
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@Path("/items/")
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@Produces(MediaType.APPLICATION_JSON)
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public class ItemsResource {
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public static DataSource datasource() throws NamingException {
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InitialContext ctx = new InitialContext();
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return (DataSource) ctx.lookup("jdbc/ToDoDB");
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}
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public List<Item> items() {
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List<Item> result = new ArrayList<>();
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try (Connection conn = datasource().getConnection()){
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Statement statement = conn.createStatement();
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ResultSet resultSet = statement.executeQuery("select taskId, task, completed from ToDos");
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while (resultSet.next()) {
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int id = resultSet.getInt("taskId");
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String task = resultSet.getString("task");
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boolean complete = resultSet.getBoolean("completed");
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result.add(new Item(id).desc(task).done(complete));
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}
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} catch (SQLException | NamingException ex) {
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ex.printStackTrace();
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}
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return result;
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}
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@GET
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public JsonArray itemsJson() {
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JsonArrayBuilder result = Json.createArrayBuilder();
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for (Item item : items()) {
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result.add(item.toJson());
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}
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return result.build();
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}
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@GET
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@Path("/drop/")
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@Produces(MediaType.TEXT_PLAIN)
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public Response dropTable() {
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try (Connection conn = datasource().getConnection()) {
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Statement stmt = conn.createStatement();
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String dropTable = "drop table ToDos;";
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System.out.println(dropTable);
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stmt.executeUpdate(dropTable);
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} catch (SQLException | NamingException ex) {
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// ok to fail, table may not exist yet.
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return Response.ok().entity(ex.getLocalizedMessage() + "\n").build();
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}
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return Response.ok().entity("ToDos table dropped.\n").build();
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}
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@GET
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@Path("/init/")
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@Produces(MediaType.TEXT_PLAIN)
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public Response initTable() {
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dropTable();
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try (Connection conn = datasource().getConnection()){
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Statement stmt = conn.createStatement();
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String createTable = "create table ToDos (" +
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"taskId INT NOT NULL AUTO_INCREMENT, " +
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"task VARCHAR(200) NOT NULL, " +
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"completed BOOLEAN," +
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"constraint todo_pk PRIMARY KEY (taskId));";
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System.out.println(createTable);
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stmt.executeUpdate(createTable);
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String[] tasks = {"Install Verrazzano", "Move ToDo List to the cloud", "Celebrate", "Clean off my desk"};
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for (String task : tasks) {
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String insert = String.format(ItemResource.insertSql, task);
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System.out.println(insert);
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stmt.executeUpdate(insert);
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}
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} catch (SQLException | NamingException ex) {
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ex.printStackTrace();
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return Response.serverError().entity("ERROR: " + ex.getLocalizedMessage() + "\n").build();
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}
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return Response.ok().entity("ToDos table initialized.\n").build();
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}
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}

‎samples/quickstart/app/src/main/webapp/WEB-INF/web.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Copyright (c) 2020, 2023, Oracle and/or its affiliates. -->
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<!-- Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl. -->
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
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version="4.0">
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<display-name>Derek's ToDo List</display-name>
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<welcome-file-list>
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<welcome-file>index.html</welcome-file>
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</welcome-file-list>
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</web-app>

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