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SQLiteSession.java
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SQLiteSession.java
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package com.bgsoftware.superiorskyblock.database.sql.session.impl;
import com.bgsoftware.superiorskyblock.SuperiorSkyblockPlugin;
import com.bgsoftware.superiorskyblock.api.objects.Pair;
import com.bgsoftware.superiorskyblock.database.sql.session.QueryResult;
import com.bgsoftware.superiorskyblock.database.sql.session.SQLSession;
import com.bgsoftware.superiorskyblock.utils.debug.PluginDebugger;
import com.google.common.base.Preconditions;
import javax.annotation.Nullable;
import java.io.File;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.concurrent.CompletableFuture;
public final class SQLiteSession implements SQLSession {
private final CompletableFuture<Void> ready = new CompletableFuture<>();
private final Object mutex = new Object();
private final SuperiorSkyblockPlugin plugin;
@Nullable
private Connection conn;
private boolean logging;
public SQLiteSession(SuperiorSkyblockPlugin plugin, boolean logging) {
this.plugin = plugin;
setLogging(logging);
}
@Override
public void setLogging(boolean logging) {
this.logging = logging;
}
private void moveOldDatabaseFile(File newDataFile) {
File oldDataFile = new File(plugin.getDataFolder(), "database.db");
if (oldDataFile.exists())
oldDataFile.renameTo(newDataFile);
}
@Override
public boolean createConnection() {
log("Trying to connect to local database (SQLite)...");
File file = new File(plugin.getDataFolder(), "datastore/database.db");
if (!file.exists()) {
file.getParentFile().mkdirs();
moveOldDatabaseFile(file);
try {
if (!file.createNewFile()) {
log("&cFailed to create database file.");
return false;
}
} catch (IOException error) {
log("&cAn unexpected error occurred while creating the database file:");
error.printStackTrace();
return false;
}
}
String jdbcUrl = "jdbc:sqlite:" + file.getAbsolutePath().replace("\\", "/");
try {
Class.forName("org.sqlite.JDBC");
conn = DriverManager.getConnection(jdbcUrl);
log("Successfully established connection with local database!");
ready.complete(null);
return true;
} catch (Exception error) {
log("&cFailed to connect to the local database:");
error.printStackTrace();
PluginDebugger.debug(error);
}
return false;
}
@Override
public void closeConnection() {
Preconditions.checkNotNull(this.conn, "Session was not initialized.");
try {
conn.close();
} catch (SQLException error) {
error.printStackTrace();
PluginDebugger.debug(error);
}
}
@Override
public void waitForConnection() {
try {
ready.get();
} catch (Exception ex) {
ex.printStackTrace();
PluginDebugger.debug(ex);
}
}
@Override
public Object getMutex() {
return mutex;
}
@Override
public void createTable(String tableName, Pair<String, String>[] columns, QueryResult<Void> queryResult) {
StringBuilder columnsSection = new StringBuilder();
for (Pair<String, String> column : columns) {
columnsSection.append(",")
.append(column.getKey())
.append(" ")
.append(column.getValue());
}
executeUpdate(String.format("CREATE TABLE IF NOT EXISTS %s (%s);",
tableName, columnsSection.substring(1)), queryResult);
}
@Override
public void renameTable(String tableName, String newName, QueryResult<Void> queryResult) {
executeUpdate(String.format("ALTER TABLE %s RENAME TO %s;", tableName, newName), queryResult);
}
@Override
public void createIndex(String indexName, String tableName, String[] columns, QueryResult<Void> queryResult) {
StringBuilder columnsSection = new StringBuilder();
for (String column : columns) {
columnsSection.append(",").append(column);
}
executeUpdate(String.format("CREATE UNIQUE INDEX %s ON %s (%s);",
indexName, tableName, columnsSection.substring(1)), queryResult);
}
@Override
public void modifyColumnType(String tableName, String columnName, String newType, QueryResult<Void> queryResult) {
executeUpdate(String.format("ALTER TABLE %s MODIFY COLUMN %s %s;",
tableName, columnName, newType), queryResult);
}
@Override
public void removePrimaryKey(String tableName, String columnName, QueryResult<Void> queryResult) {
executeQuery(String.format("PRAGMA table_info('%s')", tableName), new QueryResult<ResultSet>()
.onSuccess(resultSet -> {
if (resultSet.next() && resultSet.getInt("pk") == 1) {
resultSet.close();
executeUpdate(String.format("DROP TABLE %s_copy;", tableName), QueryResult.EMPTY_VOID_QUERY_RESULT);
executeUpdate(String.format("CREATE TABLE %s_copy AS SELECT * FROM %s;", tableName, tableName), queryResult);
executeUpdate(String.format("DROP TABLE %s;", tableName), queryResult);
renameTable(tableName + "_copy", tableName, queryResult);
}
}).onFail(queryResult::fail));
}
@Override
public void select(String tableName, String filters, QueryResult<ResultSet> queryResult) {
executeQuery(String.format("SELECT * FROM %s%s;", tableName, filters), queryResult);
}
@Override
public void setJournalMode(String jounralMode, QueryResult<ResultSet> queryResult) {
executeQuery(String.format("PRAGMA journal_mode=%s;", jounralMode), queryResult);
}
@Override
public void customQuery(String query, QueryResult<PreparedStatement> queryResult) {
Preconditions.checkNotNull(this.conn, "Session was not initialized.");
PluginDebugger.debug("Action: Database Execute, Query: " + query);
try (PreparedStatement preparedStatement =
this.conn.prepareStatement(query.replace("{prefix}", ""))) {
queryResult.complete(preparedStatement);
} catch (SQLException error) {
queryResult.fail(error);
}
}
private void log(String message) {
if (logging)
SuperiorSkyblockPlugin.log(message);
}
private void executeUpdate(String statement, QueryResult<Void> queryResult) {
Preconditions.checkNotNull(this.conn, "Session was not initialized.");
String query = statement
.replace("BIG_DECIMAL", "TEXT")
.replace("UUID", "VARCHAR(36)")
.replace("LONG_UNIQUE_TEXT", "VARCHAR(255)")
.replace("UNIQUE_TEXT", "VARCHAR(30)");
PluginDebugger.debug("Action: Database Execute, Query: " + query);
try (PreparedStatement preparedStatement = this.conn.prepareStatement(query)) {
preparedStatement.executeUpdate();
queryResult.complete(null);
} catch (SQLException error) {
queryResult.fail(error);
}
}
private void executeQuery(String query, QueryResult<ResultSet> queryResult) {
Preconditions.checkNotNull(this.conn, "Session was not initialized.");
PluginDebugger.debug("Action: Database Execute, Query: " + query);
try (PreparedStatement preparedStatement = this.conn.prepareStatement(query);
ResultSet resultSet = preparedStatement.executeQuery()) {
queryResult.complete(resultSet);
} catch (SQLException error) {
queryResult.fail(error);
}
}
}