AK-21/Graphite-Industrial-Intelligence

1import { Column } from "./column.js";2import { entityKind, is } from "./entity.js";3import { SQL, sql } from "./sql/sql.js";4import { Table } from "./table.js";5import { ViewBaseConfig } from "./view-common.js";6class ColumnAliasProxyHandler {7  constructor(table) {8    this.table = table;9  }10  static [entityKind] = "ColumnAliasProxyHandler";11  get(columnObj, prop) {12    if (prop === "table") {13      return this.table;14    }15    return columnObj[prop];16  }17}18class TableAliasProxyHandler {19  constructor(alias, replaceOriginalName) {20    this.alias = alias;21    this.replaceOriginalName = replaceOriginalName;22  }23  static [entityKind] = "TableAliasProxyHandler";24  get(target, prop) {25    if (prop === Table.Symbol.IsAlias) {26      return true;27    }28    if (prop === Table.Symbol.Name) {29      return this.alias;30    }31    if (this.replaceOriginalName && prop === Table.Symbol.OriginalName) {32      return this.alias;33    }34    if (prop === ViewBaseConfig) {35      return {36        ...target[ViewBaseConfig],37        name: this.alias,38        isAlias: true39      };40    }41    if (prop === Table.Symbol.Columns) {42      const columns = target[Table.Symbol.Columns];43      if (!columns) {44        return columns;45      }46      const proxiedColumns = {};47      Object.keys(columns).map((key) => {48        proxiedColumns[key] = new Proxy(49          columns[key],50          new ColumnAliasProxyHandler(new Proxy(target, this))51        );52      });53      return proxiedColumns;54    }55    const value = target[prop];56    if (is(value, Column)) {57      return new Proxy(value, new ColumnAliasProxyHandler(new Proxy(target, this)));58    }59    return value;60  }61}62class RelationTableAliasProxyHandler {63  constructor(alias) {64    this.alias = alias;65  }66  static [entityKind] = "RelationTableAliasProxyHandler";67  get(target, prop) {68    if (prop === "sourceTable") {69      return aliasedTable(target.sourceTable, this.alias);70    }71    return target[prop];72  }73}74function aliasedTable(table, tableAlias) {75  return new Proxy(table, new TableAliasProxyHandler(tableAlias, false));76}77function aliasedRelation(relation, tableAlias) {78  return new Proxy(relation, new RelationTableAliasProxyHandler(tableAlias));79}80function aliasedTableColumn(column, tableAlias) {81  return new Proxy(82    column,83    new ColumnAliasProxyHandler(new Proxy(column.table, new TableAliasProxyHandler(tableAlias, false)))84  );85}86function mapColumnsInAliasedSQLToAlias(query, alias) {87  return new SQL.Aliased(mapColumnsInSQLToAlias(query.sql, alias), query.fieldAlias);88}89function mapColumnsInSQLToAlias(query, alias) {90  return sql.join(query.queryChunks.map((c) => {91    if (is(c, Column)) {92      return aliasedTableColumn(c, alias);93    }94    if (is(c, SQL)) {95      return mapColumnsInSQLToAlias(c, alias);96    }97    if (is(c, SQL.Aliased)) {98      return mapColumnsInAliasedSQLToAlias(c, alias);99    }100    return c;101  }));102}103export {104  ColumnAliasProxyHandler,105  RelationTableAliasProxyHandler,106  TableAliasProxyHandler,107  aliasedRelation,108  aliasedTable,109  aliasedTableColumn,110  mapColumnsInAliasedSQLToAlias,111  mapColumnsInSQLToAlias112};113//# sourceMappingURL=alias.js.map