react-native-flipper-databases/lib/module/drivers/SQLiteStorage.js

Flipper Databases plugin for React Native

export class SQLiteStorageDriver {
  constructor(databases) {
    this.databases = databases;
  }

  async getDatabases() {
    return this.databases;
  }

  async getTableNames(_ref) {
    let {
      database
    } = _ref;
    const [result] = await database.executeSql(`SELECT name FROM sqlite_schema WHERE type IN ('table','view') AND name NOT LIKE 'sqlite_%'`);
    const tables = [];

    for (let index = 0; index < result.rows.length; index++) {
      tables.push(result.rows.item(index).name);
    }

    return tables;
  }

  async getTableStructure(_ref2, schema) {
    let {
      database
    } = _ref2;
    const [result] = await database.executeSql(`PRAGMA table_info(${schema})`);
    const cols = [];

    for (let index = 0; index < result.rows.length; index++) {
      const col = result.rows.item(index);
      cols.push([col.name, col.type, Boolean(col.notnull), Boolean(col.pk), col.dflt_value]);
    }

    return {
      structureColumns: ['name', 'type', 'not null', 'primary key', 'default value'],
      structureValues: cols,
      indexesColumns: ['name', 'type'],
      indexesValues: cols.filter(col => col[3]).map(_ref3 => {
        let [name, type] = _ref3;
        return [name, type];
      })
    };
  }

  async getTableData(databaseDescriptor, schema, order, reverse, start, count) {
    const {
      structureValues
    } = await this.getTableStructure(databaseDescriptor, schema);
    const columns = structureValues.map(_ref4 => {
      let [colName] = _ref4;
      return colName;
    });
    const [countResult] = await databaseDescriptor.database.executeSql(`SELECT COUNT(*) as count FROM ${schema}`);
    const totalCount = countResult.rows.item(0).count;
    const orderCol = order ?? 'rowid';
    const orderSort = reverse ? 'DESC' : 'ASC';
    const [result] = await databaseDescriptor.database.executeSql(`SELECT * FROM ${schema} ORDER BY ${orderCol} ${orderSort} LIMIT ${count} OFFSET ${start}`);
    const values = [];

    for (let index = 0; index < result.rows.length; index++) {
      const row = result.rows.item(index);
      values.push(columns.map(colName => row[colName]));
    }

    return {
      columns,
      values,
      start,
      count: result.rows.length,
      total: totalCount
    };
  }

  async getTableInfo(_ref5, table) {
    let {
      database
    } = _ref5;
    const [result] = await database.executeSql(`SELECT sql FROM sqlite_schema WHERE name = '${table}'`);
    return {
      definition: result.rows.item(0).sql
    };
  }

  async executeSql(_databaseDescriptor, _query) {
    return Promise.reject('Unsupported method');
  }

}
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