feat: auto generating database.db on app startup if missing

Signed-off-by: Rajdeep Roy Chowdhury <rrajdeeproychowdhury@gmail.com>

Author: Razdeep

scripts/start.bat

@@ -1,5 +1,5 @@
-set JAVA_HOME="C:\Program Files\Java\jdk-11.0.16\lib"
-set PATH="C:\Program Files\Java\jdk-11.0.16\bin"
+set JAVA_HOME="C:\Program Files\Java\jdk-17\lib"
+set PATH="C:\Program Files\Java\jdk-17\bin"
 
 java --module-path "C:\Users\rrajd\openjfx-19_windows-x64_bin-sdk\javafx-sdk-19\lib" ^
 --add-modules javafx.controls,javafx.base,javafx.graphics,javafx.fxml ^

src/main/java/satyamconsignment/common/Constants.java

@@ -3,4 +3,5 @@
 public class Constants {
     public static final String REPORT_FILE_NAME = "report.pdf";
     public static final String DATE_TIME_FORMAT = "dd-MM-yyyy";
+    public static final String DATABASE_FILE_NAME = "database.db";
 }

src/main/java/satyamconsignment/common/DatabaseHandler.java

@@ -1,8 +1,12 @@
 package satyamconsignment.common;
 
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Objects;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -11,10 +15,45 @@ public final class DatabaseHandler {
     private static DatabaseHandler databaseHandler = null;
     private Connection conn = null;
 
+    private String getInitSQL() throws IOException {
+        return new String(
+                Objects.requireNonNull(
+                        DatabaseHandler.class.getResourceAsStream("/sql/init.sql")
+                ).readAllBytes(),
+                StandardCharsets.UTF_8
+        );
+    }
+
+    private void initDatabase(Connection conn) {
+        try {
+            String initSQL = getInitSQL();
+            try (Statement st = conn.createStatement()) {
+
+                for (String statement : initSQL.split(";")) {
+                    String cleanedStatement = statement.trim();
+                    if (!cleanedStatement.isEmpty()) {
+                        st.execute(cleanedStatement);
+                    }
+                }
+
+                conn.commit();
+            } catch (Exception e) {
+                conn.rollback();
+                throw e;
+            } finally {
+                conn.setAutoCommit(true);
+            }
+        } catch (Exception ex) {
+            System.out.println(ex.toString());
+        }
+
+    }
+
     private DatabaseHandler() {
         try {
             Class.forName("org.sqlite.JDBC");
-            conn = DriverManager.getConnection("jdbc:sqlite:database.db");
+            conn = DriverManager.getConnection("jdbc:sqlite:" + Constants.DATABASE_FILE_NAME);
+            initDatabase(conn);
         } catch (ClassNotFoundException | SQLException ex) {
             Utils.showAlert(ex.toString());
             Logger.getLogger(DatabaseHandler.class.getName()).log(Level.SEVERE, ex.toString(), ex);

src/main/resources/sql/init.sql

@@ -0,0 +1,76 @@
+CREATE TABLE IF NOT EXISTS `Transport_Master_Table`
+(
+    `name` TEXT NOT NULL,
+    PRIMARY KEY (`name`)
+);
+CREATE TABLE IF NOT EXISTS `Supplier_Master_Table`
+(
+    `Name` TEXT NOT NULL,
+    PRIMARY KEY (`Name`)
+);
+CREATE TABLE IF NOT EXISTS "Payment_Entry_Table"
+(
+    `Voucher No.`   TEXT NOT NULL,
+    `Voucher Date`  TEXT NOT NULL,
+    `Supplier Name` TEXT NOT NULL,
+    `Total Amount`  TEXT NOT NULL,
+    PRIMARY KEY (`Voucher No.`)
+);
+CREATE TABLE IF NOT EXISTS "Payment_Entry_Extended_Table"
+(
+    `Voucher No.` TEXT NOT NULL,
+    `Buyer Name`  TEXT NOT NULL,
+    `Bill No.`    TEXT NOT NULL,
+    `Bill Date`   TEXT NOT NULL,
+    `Bill Amount` TEXT NOT NULL,
+    `Due Amount`  TEXT NOT NULL,
+    `Amount Paid` TEXT NOT NULL,
+    `Bank`        TEXT NOT NULL,
+    `DD No.`      TEXT NOT NULL,
+    `DD Date`     TEXT NOT NULL
+);
+CREATE TABLE IF NOT EXISTS `LR_Table`
+(
+    `Bill No.` TEXT NOT NULL,
+    `LR No.`   TEXT NOT NULL,
+    `PM`       TEXT NOT NULL
+);
+CREATE TABLE IF NOT EXISTS "Collection_Entry_Table"
+(
+    `Voucher No.`  TEXT NOT NULL,
+    `Voucher Date` TEXT NOT NULL,
+    `Buyer Name`   TEXT NOT NULL,
+    `Total Amount` TEXT NOT NULL,
+    PRIMARY KEY (`Voucher No.`)
+);
+CREATE TABLE IF NOT EXISTS "Collection_Entry_Extended_Table"
+(
+    `Voucher No.`      TEXT NOT NULL,
+    `Supplier Name`    TEXT NOT NULL,
+    `Bill No.`         TEXT NOT NULL,
+    `Bill Date`        TEXT NOT NULL,
+    `Bill Amount`      TEXT NOT NULL,
+    `Collection Due`   TEXT NOT NULL,
+    `Amount Collected` TEXT NOT NULL,
+    `Bank`             TEXT NOT NULL,
+    `DD No.`           TEXT NOT NULL,
+    `DD Date`          TEXT NOT NULL
+);
+CREATE TABLE IF NOT EXISTS `Buyer_Master_Table`
+(
+    `Name` TEXT NOT NULL,
+    PRIMARY KEY (`Name`)
+);
+CREATE TABLE IF NOT EXISTS "Bill_Entry_Table"
+(
+    `Supplier Name`  TEXT NOT NULL,
+    `Buyer Name`     TEXT NOT NULL,
+    `Bill No.`       TEXT NOT NULL,
+    `Bill Date`      TEXT NOT NULL,
+    `Transport`      TEXT NOT NULL,
+    `LR Date`        TEXT NOT NULL,
+    `Bill Amount`    TEXT NOT NULL,
+    `Collection Due` TEXT NOT NULL,
+    `Due`            TEXT NOT NULL,
+    PRIMARY KEY (`Bill No.`)
+);