| Path : /var/www/html/biogreenas/BiogreenMangal/node_modules/drizzle-orm/ |
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| Current File : /var/www/html/biogreenas/BiogreenMangal/node_modules/drizzle-orm/alias.js |
import { Column } from "./column.js";
import { entityKind, is } from "./entity.js";
import { SQL, sql } from "./sql/sql.js";
import { Table } from "./table.js";
import { ViewBaseConfig } from "./view-common.js";
class ColumnAliasProxyHandler {
constructor(table) {
this.table = table;
}
static [entityKind] = "ColumnAliasProxyHandler";
get(columnObj, prop) {
if (prop === "table") {
return this.table;
}
return columnObj[prop];
}
}
class TableAliasProxyHandler {
constructor(alias, replaceOriginalName) {
this.alias = alias;
this.replaceOriginalName = replaceOriginalName;
}
static [entityKind] = "TableAliasProxyHandler";
get(target, prop) {
if (prop === Table.Symbol.IsAlias) {
return true;
}
if (prop === Table.Symbol.Name) {
return this.alias;
}
if (this.replaceOriginalName && prop === Table.Symbol.OriginalName) {
return this.alias;
}
if (prop === ViewBaseConfig) {
return {
...target[ViewBaseConfig],
name: this.alias,
isAlias: true
};
}
if (prop === Table.Symbol.Columns) {
const columns = target[Table.Symbol.Columns];
if (!columns) {
return columns;
}
const proxiedColumns = {};
Object.keys(columns).map((key) => {
proxiedColumns[key] = new Proxy(
columns[key],
new ColumnAliasProxyHandler(new Proxy(target, this))
);
});
return proxiedColumns;
}
const value = target[prop];
if (is(value, Column)) {
return new Proxy(value, new ColumnAliasProxyHandler(new Proxy(target, this)));
}
return value;
}
}
class RelationTableAliasProxyHandler {
constructor(alias) {
this.alias = alias;
}
static [entityKind] = "RelationTableAliasProxyHandler";
get(target, prop) {
if (prop === "sourceTable") {
return aliasedTable(target.sourceTable, this.alias);
}
return target[prop];
}
}
function aliasedTable(table, tableAlias) {
return new Proxy(table, new TableAliasProxyHandler(tableAlias, false));
}
function aliasedRelation(relation, tableAlias) {
return new Proxy(relation, new RelationTableAliasProxyHandler(tableAlias));
}
function aliasedTableColumn(column, tableAlias) {
return new Proxy(
column,
new ColumnAliasProxyHandler(new Proxy(column.table, new TableAliasProxyHandler(tableAlias, false)))
);
}
function mapColumnsInAliasedSQLToAlias(query, alias) {
return new SQL.Aliased(mapColumnsInSQLToAlias(query.sql, alias), query.fieldAlias);
}
function mapColumnsInSQLToAlias(query, alias) {
return sql.join(query.queryChunks.map((c) => {
if (is(c, Column)) {
return aliasedTableColumn(c, alias);
}
if (is(c, SQL)) {
return mapColumnsInSQLToAlias(c, alias);
}
if (is(c, SQL.Aliased)) {
return mapColumnsInAliasedSQLToAlias(c, alias);
}
return c;
}));
}
export {
ColumnAliasProxyHandler,
RelationTableAliasProxyHandler,
TableAliasProxyHandler,
aliasedRelation,
aliasedTable,
aliasedTableColumn,
mapColumnsInAliasedSQLToAlias,
mapColumnsInSQLToAlias
};
//# sourceMappingURL=alias.js.map