react-native-flipper-databases/lib/module/databasesManager.js

Flipper Databases plugin for React Native

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

export class DatabasesManager {
  constructor(dbDrivers) {
    this.dbDrivers = dbDrivers;

    _defineProperty(this, "ddHolderMap", new Map());
  }

  init() {
    // Precache databases
    this.preloadDatabases();
  }

  async getDatabases() {
    return this.ddHolderMap.values();
  }

  async getTableStructure(databaseId, tableName) {
    const databaseDescriptorHolder = this.ddHolderMap.get(databaseId);

    if (!databaseDescriptorHolder) {
      return null;
    }

    return databaseDescriptorHolder.databaseDriver.getTableStructure(databaseDescriptorHolder.databaseDescriptor, tableName);
  }

  async getTableData(databaseId, tableName, order, reverse, start, count) {
    const databaseDescriptorHolder = this.ddHolderMap.get(databaseId);

    if (!databaseDescriptorHolder) {
      return null;
    }

    return databaseDescriptorHolder.databaseDriver.getTableData(databaseDescriptorHolder.databaseDescriptor, tableName, order, reverse, start, count);
  }

  async getTableInfo(databaseId, tableName) {
    const databaseDescriptorHolder = this.ddHolderMap.get(databaseId);

    if (!databaseDescriptorHolder) {
      return null;
    }

    return databaseDescriptorHolder.databaseDriver.getTableInfo(databaseDescriptorHolder.databaseDescriptor, tableName);
  }

  async executeSql(databaseId, sqlString) {
    const databaseDescriptorHolder = this.ddHolderMap.get(databaseId);

    if (!databaseDescriptorHolder) {
      return null;
    }

    return databaseDescriptorHolder.databaseDriver.executeSql(databaseDescriptorHolder.databaseDescriptor, sqlString);
  }

  async preloadDatabases() {
    let databaseId = 1; // Reset cached databases

    this.ddHolderMap.clear(); // Retrieve all DBs from the provided Drivers

    for (const databaseDriver of this.dbDrivers) {
      const databaseDescriptorList = await databaseDriver.getDatabases();

      for (const databaseDescriptor of databaseDescriptorList) {
        const id = databaseId++;
        const databaseDescriptorHolder = {
          id,
          databaseDriver,
          databaseDescriptor
        };
        this.ddHolderMap.set(id, databaseDescriptorHolder);
      }
    }
  }

}
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