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Viewing file:     tablecompiler.js (4.65 KB)      -rw-r--r--

/* eslint max-len:0 */

const inherits = require('inherits');
const utils = require('../utils');
const TableCompiler = require('../../../schema/tablecompiler');
const helpers = require('../../../helpers');
const Trigger = require('./trigger');

const { map } = require('lodash');

// Table Compiler
// ------

function TableCompiler_Oracle() {
  TableCompiler.apply(this, arguments);
}
inherits(TableCompiler_Oracle, TableCompiler);

Object.assign(TableCompiler_Oracle.prototype, {
  addColumns(columns, prefix) {
    if (columns.sql.length > 0) {
      prefix = prefix || this.addColumnsPrefix;

      const columnSql = map(columns.sql, (column) => column);
      const alter = this.lowerCase ? 'alter table ' : 'ALTER TABLE ';

      let sql = `${alter}${this.tableName()} ${prefix}`;
      if (columns.sql.length > 1) {
        sql += `(${columnSql.join(', ')})`;
      } else {
        sql += columnSql.join(', ');
      }

      this.pushQuery({
        sql,
        bindings: columns.bindings,
      });
    }
  },

  // Compile a rename column command.
  renameColumn(from, to) {
    // Remove quotes around tableName
    const tableName = this.tableName().slice(1, -1);
    return this.pushQuery(
      Trigger.renameColumnTrigger(this.client.logger, tableName, from, to)
    );
  },

  compileAdd(builder) {
    const table = this.formatter.wrap(builder);
    const columns = this.prefixArray('add column', this.getColumns(builder));
    return this.pushQuery({
      sql: `alter table ${table} ${columns.join(', ')}`,
    });
  },

  // Adds the "create" query to the query sequence.
  createQuery(columns, ifNot) {
    const sql = `create table ${this.tableName()} (${columns.sql.join(', ')})`;
    this.pushQuery({
      // catch "name is already used by an existing object" for workaround for "if not exists"
      sql: ifNot ? utils.wrapSqlWithCatch(sql, -955) : sql,
      bindings: columns.bindings,
    });
    if (this.single.comment) this.comment(this.single.comment);
  },

  // Compiles the comment on the table.
  comment(comment) {
    this.pushQuery(`comment on table ${this.tableName()} is '${comment}'`);
  },

  addColumnsPrefix: 'add ',

  alterColumnsPrefix: 'modify ',

  dropColumn() {
    const columns = helpers.normalizeArr.apply(null, arguments);
    this.pushQuery(
      `alter table ${this.tableName()} drop (${this.formatter.columnize(
        columns
      )})`
    );
  },

  changeType() {
    // alter table + table + ' modify ' + wrapped + '// type';
  },

  _indexCommand(type, tableName, columns) {
    return this.formatter.wrap(
      utils.generateCombinedName(this.client.logger, type, tableName, columns)
    );
  },

  primary(columns, constraintName) {
    constraintName = constraintName
      ? this.formatter.wrap(constraintName)
      : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
    this.pushQuery(
      `alter table ${this.tableName()} add constraint ${constraintName} primary key (${this.formatter.columnize(
        columns
      )})`
    );
  },

  dropPrimary(constraintName) {
    constraintName = constraintName
      ? this.formatter.wrap(constraintName)
      : this.formatter.wrap(this.tableNameRaw + '_pkey');
    this.pushQuery(
      `alter table ${this.tableName()} drop constraint ${constraintName}`
    );
  },

  index(columns, indexName) {
    indexName = indexName
      ? this.formatter.wrap(indexName)
      : this._indexCommand('index', this.tableNameRaw, columns);
    this.pushQuery(
      `create index ${indexName} on ${this.tableName()}` +
        ' (' +
        this.formatter.columnize(columns) +
        ')'
    );
  },

  dropIndex(columns, indexName) {
    indexName = indexName
      ? this.formatter.wrap(indexName)
      : this._indexCommand('index', this.tableNameRaw, columns);
    this.pushQuery(`drop index ${indexName}`);
  },

  unique(columns, indexName) {
    indexName = indexName
      ? this.formatter.wrap(indexName)
      : this._indexCommand('unique', this.tableNameRaw, columns);
    this.pushQuery(
      `alter table ${this.tableName()} add constraint ${indexName}` +
        ' unique (' +
        this.formatter.columnize(columns) +
        ')'
    );
  },

  dropUnique(columns, indexName) {
    indexName = indexName
      ? this.formatter.wrap(indexName)
      : this._indexCommand('unique', this.tableNameRaw, columns);
    this.pushQuery(
      `alter table ${this.tableName()} drop constraint ${indexName}`
    );
  },

  dropForeign(columns, indexName) {
    indexName = indexName
      ? this.formatter.wrap(indexName)
      : this._indexCommand('foreign', this.tableNameRaw, columns);
    this.pushQuery(
      `alter table ${this.tableName()} drop constraint ${indexName}`
    );
  },
});

module.exports = TableCompiler_Oracle;