Skip to content

GitLab

Commit f1c775b1 authored by Franz Reischl's avatar Franz Reischl
Browse files

Adding DML SQL script with demo data upon DB init.

parent ad4e69ec
Hide whitespace changes
Inline Side-by-side
pom.xml
View file @ f1c775b1
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<modelVersion>4.0.0</modelVersion>
<groupId>university</groupId>
<artifactId>at.jku.ce</artifactId>
<packaging>war</packaging>
<version>1.1.0</version>
<name>at.jku.ce</name>
<groupId>university</groupId>
<artifactId>at.jku.ce</artifactId>
<packaging>war</packaging>
<version>1.1.0</version>
<name>at.jku.ce</name>
<build>
<finalName>at.jku.ce</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<build>
<finalName>at.jku.ce</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<!-- use the following artifactId if you don't need servlet 2.x compatibility -->
<!-- artifactId>jersey-container-servlet</artifactId -->
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-binding</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.2.8-b01</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2-promoted-b65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.197</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat -->
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
<properties>
<jersey.version>2.27</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.servlet</artifactId>
<version>10.0-b28</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<!-- use the following artifactId if you don't need servlet 2.x compatibility -->
<!-- artifactId>jersey-container-servlet</artifactId -->
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-binding</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.2.8-b01</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2-promoted-b65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.197</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat -->
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
<jersey.version>2.27</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
src/main/java/university/at/jku/ce/dao/h2dao/H2DBInitializerDao.java
View file @ f1c775b1
package university.at.jku.ce.dao.h2dao;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.NotFoundException;
import university.at.jku.ce.dao.DBInitializerDao;
import university.at.jku.ce.model.Student;
public class H2DBInitializerDao implements DBInitializerDao {
private Statement stmt;
private Connection con;
private ResultSet rs;
@Override
public void initDatabase() {
deleteAllTables();
createAllTables();
insertData();
}
public void insertData() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
// STEP 3: Execute a query
try (BufferedReader br = new BufferedReader(new FileReader(getSQLPath()+"//DMLSkript.txt"))) {
String line;
while ((line = br.readLine()) != null) {
String sql=line.substring(0, line.length()-1);
stmt = con.createStatement();
stmt.executeUpdate(sql);
}
}
// STEP 4: Clean-up environment
stmt.close();
con.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
throw new RuntimeException();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
rs = null;
} // end try
}
public void createAllTables() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
// STEP 3: Execute a query
String sql = "CREATE TABLE student (matrnr INTEGER PRIMARY KEY, firstname VARCHAR2(150), lastname VARCHAR2(150))";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE study (studyid INTEGER PRIMARY KEY, name VARCHAR(150))";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE subject (\r\n" + " studyId INTEGER,\r\n" + " subjectid INTEGER, \r\n"
+ " name VARCHAR2(150), \r\n" + " ects INTEGER, \r\n"
+ " PRIMARY KEY (studyid, subjectid),\r\n"
+ " FOREIGN KEY (studyId) REFERENCES study(studyId) ON DELETE CASCADE\r\n" + ")";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE inscription(\r\n" + " matrnr INTEGER,\r\n" + " studyid INTEGER,\r\n"
+ " ins_date DATE,\r\n" + " FOREIGN KEY (studyid) REFERENCES study(studyid),\r\n"
+ " FOREIGN KEY (matrnr) REFERENCES student(matrnr),\r\n" + " PRIMARY KEY (matrnr, studyid)\r\n"
+ ")";
stmt = con.createStatement();
stmt.executeUpdate(sql);
// STEP 4: Clean-up environment
stmt.close();
con.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
throw new RuntimeException();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
rs = null;
} // end try
}
public void deleteAllTables() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
// STEP 3: Execute a query
String sql = "DROP TABLE student CASCADE CONSTRAINTS";
try {
stmt = con.createStatement();
stmt.executeUpdate(sql);
} catch (Throwable t) {
System.out.println("Table student did not exist");
}
sql = "DROP TABLE study CASCADE CONSTRAINTS";
try {
stmt = con.createStatement();
stmt.executeUpdate(sql);
} catch (Throwable t) {
System.out.println("Table study did not exist");
}
sql = "DROP TABLE subject CASCADE CONSTRAINTS";
try {
stmt = con.createStatement();
stmt.executeUpdate(sql);
} catch (Throwable t) {
System.out.println("Table subject did not exist");
}
sql = "DROP TABLE inscription CASCADE CONSTRAINTS";
try {
stmt = con.createStatement();
stmt.executeUpdate(sql);
} catch (Throwable t) {
System.out.println("Table inscription did not exist");
}
// STEP 4: Clean-up environment
stmt.close();
con.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
throw new RuntimeException();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
rs = null;
} // end try
}
private static String getSQLPath() {
// Create database directory, if not exists already
Path p2 = Paths.get(System.getProperty("catalina.base"), "sql");
return p2.toAbsolutePath().toString();
}
@Override
public boolean isValidDatabase() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
try {
String sql="SELECT * from student where rownum<2";
stmt = con.createStatement();
stmt.executeQuery(sql);
sql="SELECT * from study where rownum<2";
stmt = con.createStatement();
stmt.executeQuery(sql);
sql="SELECT * from subject where rownum<2";
stmt = con.createStatement();
stmt.executeQuery(sql);
sql="SELECT * from inscription where rownum<2";
stmt = con.createStatement();
stmt.executeQuery(sql);
} catch (SQLException e) {return false;}
// STEP 4: Clean-up environment
stmt.close();
con.close();
return true;
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
return false;
} catch (Exception e) {
// Handle errors for Class.forName
return false;
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
rs = null;
} // end try
}
}
package university.at.jku.ce.dao.h2dao;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.NotFoundException;
import university.at.jku.ce.dao.DBInitializerDao;
import university.at.jku.ce.model.Student;
public class H2DBInitializerDao implements DBInitializerDao {
private Statement stmt;
private Connection con;
private ResultSet rs;
@Override
public void initDatabase() {
deleteAllTables();
createAllTables();
insertData();
}
public void insertData() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
// STEP 3: Execute a query
try (BufferedReader br = new BufferedReader(new FileReader(
getClass().getClassLoader().getResource("DML_script.sql").getFile()
))) {
String line;
while ((line = br.readLine()) != null) {
String sql=line.substring(0, line.length()-1);
stmt = con.createStatement();
stmt.executeUpdate(sql);
}
}
// STEP 4: Clean-up environment
stmt.close();
con.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
throw new RuntimeException();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
rs = null;
} // end try
}
public void createAllTables() {
try {
// STEP 1: Register JDBC driver
Class.forName(DaoParam.DRIVER);
// STEP 2: Open a connection
con = DriverManager.getConnection(DaoParam.JDBC_URL, DaoParam.USER, DaoParam.PASSWORD);
// STEP 3: Execute a query
String sql = "CREATE TABLE student (matrnr INTEGER PRIMARY KEY, firstname VARCHAR2(150), lastname VARCHAR2(150))";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE study (studyid INTEGER PRIMARY KEY, name VARCHAR(150))";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE subject (\r\n" + " studyId INTEGER,\r\n" + " subjectid INTEGER, \r\n"
+ " name VARCHAR2(150), \r\n" + " ects INTEGER, \r\n"
+ " PRIMARY KEY (studyid, subjectid),\r\n"
+ " FOREIGN KEY (studyId) REFERENCES study(studyId) ON DELETE CASCADE\r\n" + ")";
stmt = con.createStatement();
stmt.executeUpdate(sql);
sql = "CREATE TABLE inscription(\r\n" + " matrnr INTEGER,\r\n" + " studyid INTEGER,\r\n"
+ " ins_date DATE,\r\n" + " FOREIGN KEY (studyid) REFERENCES study(studyid),\r\n"
+ " FOREIGN KEY (matrnr) REFERENCES student(matrnr),\r\n" + " PRIMARY KEY (matrnr, studyid)\r\n"
+ ")";
stmt = con.createStatement();
stmt.executeUpdate(sql);
// STEP 4: Clean-up environment
stmt.close();
con.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
throw new RuntimeException();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null)
stmt.close();
} catch (SQLException se2) {
} // nothing we can do
try {
if (con != null)
con.close();
} catch (SQLException se) {