g595-manucharyan-task4(pretend for 1 point)

homework-g595-manucharyan/pom.xml

@@ -10,20 +10,57 @@
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>homework-g595-manucharyan</artifactId>
+    <packaging>pom</packaging>
     <version>1.0.0</version>
 
+    <properties>
+        <spring.boot.version>1.4.2.RELEASE</spring.boot.version>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>ru.mipt.java2016</groupId>
             <artifactId>homework-base</artifactId>
             <version>1.0.0</version>
         </dependency>
 
+        <dependency>
+            <groupId>net.sourceforge.jeval</groupId>
+            <artifactId>jeval</artifactId>
+            <version>0.9.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>2.5.1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>1.4.193</version>
+        </dependency>
+
         <dependency>
             <groupId>ru.mipt.java2016</groupId>
             <artifactId>homework-tests</artifactId>
             <version>1.0.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
-</project>
+</project>

homework-g595-manucharyan/src/main/java/ru/mipt/java2016/homework/g595/manucharyan/task4/BillingDao.java

@@ -0,0 +1,63 @@
+package ru.mipt.java2016.homework.g595.manucharyan.task4;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.EmptyResultDataAccessException;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.stereotype.Repository;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import javax.annotation.PostConstruct;
+import javax.sql.DataSource;
+
+
+@Repository
+public class BillingDao {
+    private static final Logger LOG = LoggerFactory.getLogger(BillingDao.class);
+
+    @Autowired
+    private DataSource dataSource;
+
+    private JdbcTemplate jdbcTemplate;
+
+    @PostConstruct
+    public void postConstruct() {
+        jdbcTemplate = new JdbcTemplate(dataSource, false);
+        initSchema();
+    }
+
+    public void initSchema() {
+        LOG.trace("Initializing schema");
+        jdbcTemplate.execute("CREATE SCHEMA IF NOT EXISTS billing");
+        jdbcTemplate.execute("CREATE TABLE IF NOT EXISTS billing.users " +
+                "(username VARCHAR PRIMARY KEY, password VARCHAR, enabled BOOLEAN)");
+        try {
+            jdbcTemplate.update("INSERT INTO billing.users VALUES ('username', 'password', TRUE)");
+        } catch (Exception e) {
+            System.out.print("");
+        }
+    }
+
+
+    public BillingUser loadUser(String username) throws EmptyResultDataAccessException {
+        LOG.trace("Querying for user " + username);
+        return jdbcTemplate.queryForObject(
+                "SELECT username, password, enabled FROM billing.users WHERE username = ?",
+                new Object[]{username},
+                new RowMapper<BillingUser>() {
+                    @Override
+                    public BillingUser mapRow(ResultSet rs, int rowNum) throws SQLException {
+                        return new BillingUser(
+                                rs.getString("username"),
+                                rs.getString("password"),
+                                rs.getBoolean("enabled")
+                        );
+                    }
+                }
+        );
+    }
+}

homework-g595-manucharyan/src/main/java/ru/mipt/java2016/homework/g595/manucharyan/task4/BillingDatabaseConfiguration.java

@@ -0,0 +1,23 @@
+package ru.mipt.java2016.homework.g595.manucharyan.task4;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import javax.sql.DataSource;
+
+@Configuration
+public class BillingDatabaseConfiguration {
+    @Bean
+    public DataSource billingDataSource() {
+        HikariConfig config = new HikariConfig();
+        config.setDriverClassName(org.h2.Driver.class.getName());
+        config.setJdbcUrl("jdbc:h2:C:\\Users\\op\\Documents\\GitHub\\mipt-java-2016\\" +
+                "homework-g595-manucharyan\\Database.db");
+        config.setUsername("");
+        config.setPassword("");
+        return new HikariDataSource(config);
+    }
+}

homework-g595-manucharyan/src/main/java/ru/mipt/java2016/homework/g595/manucharyan/task4/BillingUser.java

@@ -0,0 +1,69 @@
+package ru.mipt.java2016.homework.g595.manucharyan.task4;
+
+public class BillingUser {
+    private final String username;
+    private final String password;
+    private final boolean enabled;
+
+    public BillingUser(String username, String password, boolean enabled) {
+        if (username == null) {
+            throw new IllegalArgumentException("Null username is not allowed");
+        }
+        if (password == null) {
+            throw new IllegalArgumentException("Null password is not allowed");
+        }
+        this.username = username;
+        this.password = password;
+        this.enabled = enabled;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    @Override
+    public String toString() {
+        return "BillingUser{" +
+                "username='" + username + '\'' +
+                ", password='" + password + '\'' +
+                ", enabled=" + enabled +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        BillingUser that = (BillingUser) o;
+
+        if (enabled != that.enabled) {
+            return false;
+        }
+        if (!username.equals(that.username)) {
+            return false;
+        }
+        return password.equals(that.password);
+
+    }
+
+    @Override
+    public int hashCode() {
+        int result = username.hashCode();
+        result = 31 * result + password.hashCode();
+        result = 31 * result + (enabled ? 1 : 0);
+        return result;
+    }
+}

homework-g595-manucharyan/src/main/java/ru/mipt/java2016/homework/g595/manucharyan/task4/CalculatorController.java

@@ -0,0 +1,39 @@
+package ru.mipt.java2016.homework.g595.manucharyan.task4;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import ru.mipt.java2016.homework.base.task1.Calculator;
+import ru.mipt.java2016.homework.base.task1.ParsingException;
+
+@RestController
+public class CalculatorController {
+    private static final Logger LOG = LoggerFactory.getLogger(CalculatorController.class);
+    @Autowired
+    private Calculator calculator;
+
+    @RequestMapping(path = "/ping", method = RequestMethod.GET, produces = "text/plain")
+    public String echo() {
+        return "OK\n";
+    }
+
+    @RequestMapping(path = "/", method = RequestMethod.GET, produces = "text/html")
+    public String main(@RequestParam(required = false) String name) {
+        if (name == null) {
+            name = "world";
+        }
+        return "<html>" +
+                "<head><title>FediqApp</title></head>" +
+                "<body><h1>Hello, " + name + "!</h1></body>" +
+                "</html>";
+    }
+
+    @RequestMapping(path = "/eval", method = RequestMethod.POST, consumes = "text/plain", produces = "text/plain")
+    public String eval(@RequestBody String expression) throws ParsingException {
+        LOG.debug("Evaluation request: [" + expression + "]");
+        double result = calculator.calculate(expression);
+        LOG.trace("Result: " + result);
+        return Double.toString(result) + "\n";
+    }
+}