Sarah

A library to easily manage your database

Graddle

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
        implementation 'com.github.Maxlego08:Sarah:<version>'
}

Maven

<repository>
    <id>jitpack.io</id>
    <url>https://jitpack.io</url>
</repository>

<dependency>
    <groupId>com.github.Maxlego08</groupId>
    <artifactId>Sarah</artifactId>
    <version>
    <version></version>
</dependency>

How to connect to the database ?

With MYSQL

public void connect() {
    DatabaseConfiguration configuration=DatabaseConfiguration.create(<user>,<password>,<port>,<host>,<database>);
    DatabaseConnection connection=new MySqlConnection(configuration);
}

With SQLITE

public void connect() {
    // The boolean allows to enable or not debug requests
    DatabaseConfiguration configuration=DatabaseConfiguration.sqlite(<boolean>);

    // The folder will be where the database.db file will be located
    DatabaseConnection connection=new SqliteConnection(configuration,<folder>);
}

How to create a migration ?

Sarah will create a migrations table (you can change the name with the method MigrationManager.setMigrationTableName). Each migration will be run only once.

Example from zEssentials:

package fr.maxlego08.essentials.database.migrations;

import fr.maxlego08.sarah.SchemaBuilder;
import fr.maxlego08.sarah.database.Migration;

public class CreateUserTableMigration extends Migration {
    @Override
    public void up() {
        create("%prefix%users", table -> {
            table.uuid("unique_id").primary();
            table.string("name", 16);
            table.text("last_location").nullable();
            table.bigInt("play_time").defaultValue("0");
            table.timestamps();
        });
    }
}

You can prefix your tables if you need to.

You must then save your migration with the method MigrationManager.registerMigration

After saving all your migrations, you must run them with the method MigrationManager.execute This method takes as parameter a SQL Java Connection, DatabaseConfiguration and a Logger

How to create SQL queries ?

The RequestHelper class simplifies queries, but you won’t be able to handle errors. To start using Sarah sa will be enough. But if you need more control, just take the code from the RequestHelper class.

The following examples are from zAuctionHouse Stats.

Upsert

Allows to update the database by making an INSERT followed by an ON DUPLICATE KEY UPDATE.

public void upsert(GlobalKey key, GlobalValue value) {
    ZPlugin.service.execute(() -> { 
        this.requestHelper.upsert("zah_stats_global", table -> {
            table.string("key", key.name());
            table.object("value", value.getValue());
        });
    });
}

Attention, if you are in SQLite, you need define primary keys with the method .primary() The example above will therefore become for SQLite:

public void upsert(GlobalKey key, GlobalValue value) {
    ZPlugin.service.execute(() -> { 
        this.requestHelper.upsert("zah_stats_global", table -> {
            table.string("key", key.name()).primary();
            table.object("value", value.getValue());
        });
    });
}

Insert

Allows you to create an insert

public void insertItemPurchased(PlayerItemPurchased item) {
    ZPlugin.service.execute(() -> {
        this.requestHelper.insert("zah_player_purchased_items", table -> {
            table.uuid("player_id", item.getPlayerId());
            table.string("player_name", item.getPlayerName());
            table.string("itemstack", item.getItemStack());
            table.bigInt("price", item.getPrice());
            table.string("economy", item.getEconomy());
            table.uuid("seller_id", item.getSellerId());
            table.string("seller_name", item.getSellerName());
            table.bigInt("purchase_time", System.currentTimeMillis());
            table.string("auction_type", item.getAuctionType().name());
        });
    });
}

Select

This example retrieves all the data from the table and transforms the result into a map

public Map<UUID, List<PlayerItemPurchased>> selectAll() throws SQLException {
    return this.requestHelper.selectAll("zah_player_purchased_items", PlayerItemPurchasedDTO.class).stream().map(PlayerItemPurchased::new).collect(Collectors.groupingBy(PlayerItemPurchased::getPlayerId));
}

Here is another example with a where and an order by

public List<ChatMessageDTO> getMessages(UUID uuid) {
    return requestHelper.select("chat_message", ChatMessageDTO.class, table -> {
        table.uuid("unique_id", uuid);
        table.orderByDesc("created_at");
    });
}

You must create an object with a constructor that will have a constructor with the name and each column

package fr.maxlego08.stats.dto;

import fr.maxlego08.zauctionhouse.api.enums.AuctionType;

import java.util.UUID;

public record PlayerItemPurchasedDTO(long id, 
                                     UUID player_id,
                                     String player_name,
                                     String itemStack, 
                                     long price,
                                     String economy,
                                     UUID seller_id, 
                                     String seller_name,
                                     long purchase_time,
                                     AuctionType auction_type
) { }

If you are in a java version that does not have records, you must use the @Column annotation to set the column name Here is an example with the table MigrationTable

public static class MigrationTable {

    @Column("migration")
    private final String migration;

    public MigrationTable(String migration) {
        this.migration = migration;
    }

    public String getMigration() {
        return migration;
    }
}