verdnatura-mirror
/
loopback-connector-mysql
mirror of https://github.com/loopbackio/loopback-connector-mysql.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge f705836e0f into 6198eab5ad

This commit is contained in:
Muhammad Aaqil 2025-04-02 20:03:44 -04:00 committed by GitHub
parent 6198eab5ad f705836e0f
commit 8af8f0da57
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
3 changed files with 113 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
lib/discovery.js
View File

@ -157,37 +157,90 @@ function mixinDiscovery(MySQL, mysql) {
MySQL.prototype.buildQueryColumns = function(schema, table, options = {}) {
let sql = null;
if (schema) {
sql = paginateSQL('SELECT table_schema AS "owner",' +
' table_name AS "tableName",' +
' column_name AS "columnName",' +
' data_type AS "dataType",' +
' character_maximum_length AS "dataLength",' +
' numeric_precision AS "dataPrecision",' +
' numeric_scale AS "dataScale",' +
' column_type AS "columnType",' +
' is_nullable = \'YES\' AS "nullable",' +
' CASE WHEN extra LIKE \'%auto_increment%\' THEN 1 ELSE 0 END AS "generated"' +
' FROM information_schema.columns' +
' WHERE table_schema=' + mysql.escape(schema) +
(table ? ' AND table_name=' + mysql.escape(table) : ''),
'table_name, ordinal_position', {});
sql = paginateSQL(
`SELECT
cols.table_schema AS "owner",
cols.table_name AS "tableName",
cols.column_name AS "columnName",
cols.data_type AS "dataType",
cols.character_maximum_length AS "dataLength",
cols.numeric_precision AS "dataPrecision",
cols.numeric_scale AS "dataScale",
cols.column_type AS "columnType",
cols.is_nullable = 'YES' AS "nullable",
CASE WHEN cols.extra LIKE '%auto_increment%' THEN 1 ELSE 0 END AS "generated",
indexes.index_name AS "indexName",
indexes.non_unique AS "nonUnique",
indexes.seq_in_index AS "seqInIndex",
indexes.cardinality AS "cardinality",
indexes.index_type AS "indexType",
CASE WHEN fk.column_name IS NOT NULL THEN 1 ELSE 0 END AS "isForeignKey"
FROM
information_schema.columns cols
LEFT JOIN
information_schema.statistics indexes
ON
cols.table_schema = indexes.table_schema
AND cols.table_name = indexes.table_name
AND cols.column_name = indexes.column_name
LEFT JOIN
information_schema.KEY_COLUMN_USAGE fk
ON
cols.table_schema = fk.table_schema
AND cols.table_name = fk.table_name
AND cols.column_name = fk.column_name
AND fk.referenced_table_name IS NOT NULL
WHERE
cols.table_schema = ${mysql.escape(schema)}
${table ? ' AND cols.table_name = ' + mysql.escape(table) : ''}
`,
'cols.table_name, cols.ordinal_position',
{},
);
} else {
sql = paginateSQL('SELECT table_schema AS "owner",' +
' table_name AS "tableName",' +
' column_name AS "columnName",' +
' data_type AS "dataType",' +
' character_maximum_length AS "dataLength",' +
' numeric_precision AS "dataPrecision",' +
' numeric_scale AS "dataScale",' +
' column_type AS "columnType",' +
' is_nullable = \'YES\' AS "nullable",' +
' CASE WHEN extra LIKE \'%auto_increment%\' THEN 1 ELSE 0 END AS "generated"' +
' FROM information_schema.columns' +
(table ? ' WHERE table_name=' + mysql.escape(table) : ''),
'table_name, ordinal_position', {});
sql = paginateSQL(
`SELECT
cols.table_schema AS "owner",
cols.table_name AS "tableName",
cols.column_name AS "columnName",
cols.data_type AS "dataType",
cols.character_maximum_length AS "dataLength",
cols.numeric_precision AS "dataPrecision",
cols.numeric_scale AS "dataScale",
cols.column_type AS "columnType",
cols.is_nullable = 'YES' AS "nullable",
CASE WHEN cols.extra LIKE '%auto_increment%' THEN 1 ELSE 0 END AS "generated",
indexes.index_name AS "indexName",
indexes.seq_in_index AS "indexColumnOrder",
indexes.non_unique AS "nonUnique",
indexes.cardinality AS "cardinality",
indexes.index_type AS "indexType",
CASE WHEN fk.column_name IS NOT NULL THEN 1 ELSE 0 END AS "isForeignKey"
FROM
information_schema.columns AS cols
LEFT JOIN
information_schema.statistics AS indexes
ON
cols.table_schema = indexes.table_schema
AND cols.table_name = indexes.table_name
AND cols.column_name = indexes.column_name
LEFT JOIN
information_schema.KEY_COLUMN_USAGE AS fk
ON
cols.table_schema = fk.table_schema
AND cols.table_name = fk.table_name
AND cols.column_name = fk.column_name
AND fk.referenced_table_name IS NOT NULL
WHERE
cols.table_schema = ${mysql.escape(schema)}
${table ? ' AND cols.table_name = ' + mysql.escape(table) : ''}
`,
'cols.table_name, cols.ordinal_position',
{},
);
}
if (options.orderBy) {
sql += ' ORDER BY ' + options.orderBy;
sql += ' ORDER BY ' + 'cols.' + options.orderBy;
}
return sql;
};

17
test/mysql.discover.test.js
View File

@ -199,6 +199,23 @@ describe('Discover model primary keys', function() {
});
});
describe('Discover user model with index', function() {
it('should return user with index', function(done) {
db.discoverModelProperties('user', function(err, models) {
if (err) {
console.error(err);
done(err);
} else {
models.forEach(function(m) {
assert(m.tableName.toLowerCase() === 'user');
assert(m.properties.email.index);
});
done(null, models);
}
});
});
});
describe('Discover model foreign keys', function() {
it('should return an array of foreign keys for INVENTORY', function(done) {
db.discoverForeignKeys('INVENTORY', function(err, models) {

15
test/schema.sql
View File

@ -209,6 +209,21 @@ LOCK TABLES `RESERVATION` WRITE;
/*!40000 ALTER TABLE `RESERVATION` ENABLE KEYS */;
UNLOCK TABLES;
DROP TABLE IF EXISTS `USER`;
/*!40101 SET @saved_cs_client = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `USER` (
`ID` VARCHAR(20) NOT NULL,
`NAME` VARCHAR(100) NOT NULL,
`EMAIL` VARCHAR(255) NOT NULL,
`PASSWORD` VARCHAR(255) NOT NULL,
`CREATED_AT` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
`UPDATED_AT` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`ID`),
UNIQUE KEY `USER_EMAIL_UNIQUE` (`EMAIL`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
--
-- Table structure for table `TESTGEN`
--