40 lines
1.5 KiB
JavaScript
40 lines
1.5 KiB
JavaScript
import { sqlQuoteIdent as q } from "../../utils/sql-safe";
|
|
import recordSchemaChange from "./record-schema-change";
|
|
/**
|
|
* Sync indexes for a table
|
|
*/
|
|
export default function syncIndexes(params) {
|
|
const { db, table } = params;
|
|
if (!table.indexes || table.indexes.length === 0) {
|
|
return;
|
|
}
|
|
const existingIndexes = db
|
|
.query(`SELECT name FROM sqlite_master WHERE type='index' AND tbl_name=? AND name NOT LIKE 'sqlite_%'`)
|
|
.all(table.tableName).map((r) => r.name);
|
|
// Drop indexes not in schema
|
|
for (const indexName of existingIndexes) {
|
|
const stillExists = table.indexes.some((idx) => idx.indexName === indexName);
|
|
if (!stillExists) {
|
|
recordSchemaChange(params, {
|
|
description: `Drop index "${indexName}"`,
|
|
});
|
|
db.run(`DROP INDEX IF EXISTS ${q(indexName)}`);
|
|
}
|
|
}
|
|
// Create new indexes
|
|
for (const index of table.indexes) {
|
|
if (!index.indexName || !index.indexTableFields?.length) {
|
|
continue;
|
|
}
|
|
if (!existingIndexes.includes(index.indexName)) {
|
|
recordSchemaChange(params, {
|
|
description: `Create index "${index.indexName}" on "${table.tableName}"`,
|
|
});
|
|
const fields = index.indexTableFields
|
|
.map((f) => q(String(f)))
|
|
.join(", ");
|
|
db.run(`CREATE INDEX ${q(index.indexName)} ON ${q(table.tableName)} (${fields})`);
|
|
}
|
|
}
|
|
}
|