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feat: foreign key delete cascade testing, samples (#1825)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| // Copyright 2023 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // sample-metadata: | ||
| // title: Alters a table with foreign key delete cascade action | ||
| // usage: node table-alter-with-foreign-key-delete-cascade.js <INSTANCE_ID> <DATABASE_ID> <PROJECT_ID> | ||
|
|
||
| 'use strict'; | ||
|
|
||
| function main(instanceId, databaseId, projectId) { | ||
| // [START spanner_alter_table_with_foreign_key_delete_cascade] | ||
|
|
||
| // Imports the Google Cloud client library | ||
| const {Spanner} = require('@google-cloud/spanner'); | ||
|
|
||
| /** | ||
| * TODO(developer): Uncomment the following lines before running the sample. | ||
| */ | ||
| // const projectId = 'my-project-id'; | ||
| // const instanceId = 'my-instance-id'; | ||
| // const databaseId = 'my-database-id'; | ||
|
|
||
| // Creates a client | ||
| const spanner = new Spanner({ | ||
| projectId: projectId, | ||
| }); | ||
|
|
||
| // Gets a reference to a Cloud Spanner instance and a database. The database does not need to exist. | ||
| const instance = spanner.instance(instanceId); | ||
| const database = instance.database(databaseId); | ||
|
|
||
| async function alterTableWithForeignKeyDeleteCascade() { | ||
| const [operation] = await database.updateSchema([ | ||
| `ALTER TABLE ShoppingCarts | ||
| ADD CONSTRAINT FKShoppingCartsCustomerName | ||
| FOREIGN KEY (CustomerName) | ||
| REFERENCES Customers(CustomerName) | ||
| ON DELETE CASCADE`, | ||
| ]); | ||
|
|
||
| console.log(`Waiting for operation on ${databaseId} to complete...`); | ||
| await operation.promise(); | ||
|
|
||
| console.log('Altered ShoppingCarts table with FKShoppingCartsCustomerName'); | ||
| } | ||
| alterTableWithForeignKeyDeleteCascade(); | ||
| // [END spanner_alter_table_with_foreign_key_delete_cascade] | ||
| } | ||
| process.on('unhandledRejection', err => { | ||
| console.error(err.message); | ||
| process.exitCode = 1; | ||
| }); | ||
| main(...process.argv.slice(2)); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Copyright 2023 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // sample-metadata: | ||
| // title: Creates a table with foreign key delete cascade action | ||
| // usage: node table-create-with-foreign-key-delete-cascade.js.js <INSTANCE_ID> <DATABASE_ID> <PROJECT_ID> | ||
|
|
||
| 'use strict'; | ||
|
|
||
| function main(instanceId, databaseId, projectId) { | ||
| // [START spanner_create_table_with_foreign_key_delete_cascade] | ||
|
|
||
| // Imports the Google Cloud client library | ||
| const {Spanner} = require('@google-cloud/spanner'); | ||
|
|
||
| /** | ||
| * TODO(developer): Uncomment the following lines before running the sample. | ||
| */ | ||
| // const projectId = 'my-project-id'; | ||
| // const instanceId = 'my-instance-id'; | ||
| // const databaseId = 'my-database-id'; | ||
|
|
||
| // Creates a client | ||
| const spanner = new Spanner({ | ||
| projectId: projectId, | ||
| }); | ||
|
|
||
| // Gets a reference to a Cloud Spanner instance and a database. The database does not need to exist. | ||
| const instance = spanner.instance(instanceId); | ||
| const database = instance.database(databaseId); | ||
|
|
||
| async function createTableWithForeignKeyDeleteCascade() { | ||
| const [operation] = await database.updateSchema([ | ||
| `CREATE TABLE Customers ( | ||
| CustomerId INT64, | ||
| CustomerName STRING(62) NOT NULL | ||
| ) PRIMARY KEY (CustomerId)`, | ||
| `CREATE TABLE ShoppingCarts ( | ||
| CartId INT64 NOT NULL, | ||
| CustomerId INT64 NOT NULL, | ||
| CustomerName STRING(62) NOT NULL, | ||
| CONSTRAINT FKShoppingCartsCustomerId FOREIGN KEY (CustomerId) | ||
| REFERENCES Customers (CustomerId) ON DELETE CASCADE, | ||
| ) PRIMARY KEY (CartId)`, | ||
| ]); | ||
|
|
||
| console.log(`Waiting for operation on ${databaseId} to complete...`); | ||
| await operation.promise(); | ||
|
|
||
| console.log( | ||
| 'Created Customers and ShoppingCarts table with FKShoppingCartsCustomerId' | ||
| ); | ||
| } | ||
| createTableWithForeignKeyDeleteCascade(); | ||
| // [END spanner_create_table_with_foreign_key_delete_cascade] | ||
| } | ||
| process.on('unhandledRejection', err => { | ||
| console.error(err.message); | ||
| process.exitCode = 1; | ||
| }); | ||
| main(...process.argv.slice(2)); |
63 changes: 63 additions & 0 deletions
63
samples/table-drop-foreign-key-constraint-delete-cascade.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| // Copyright 2023 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // sample-metadata: | ||
| // title: Drops a foreign key constraint with delete cascade action | ||
| // usage: node table-drop-foreign-key-constraint-delete-cascade.js <INSTANCE_ID> <DATABASE_ID> <PROJECT_ID> | ||
|
|
||
| 'use strict'; | ||
|
|
||
| function main(instanceId, databaseId, projectId) { | ||
| // [START spanner_drop_foreign_key_constraint_delete_cascade] | ||
|
|
||
| // Imports the Google Cloud client library | ||
| const {Spanner} = require('@google-cloud/spanner'); | ||
|
|
||
| /** | ||
| * TODO(developer): Uncomment the following lines before running the sample. | ||
| */ | ||
| // const projectId = 'my-project-id'; | ||
| // const instanceId = 'my-instance-id'; | ||
| // const databaseId = 'my-database-id'; | ||
|
|
||
| // Creates a client | ||
| const spanner = new Spanner({ | ||
| projectId: projectId, | ||
| }); | ||
|
|
||
| // Gets a reference to a Cloud Spanner instance and a database. The database does not need to exist. | ||
| const instance = spanner.instance(instanceId); | ||
| const database = instance.database(databaseId); | ||
|
|
||
| async function dropForeignKeyConstraintDeleteCascade() { | ||
| const [operation] = await database.updateSchema([ | ||
| `ALTER TABLE ShoppingCarts | ||
| DROP CONSTRAINT FKShoppingCartsCustomerName`, | ||
| ]); | ||
|
|
||
| console.log(`Waiting for operation on ${databaseId} to complete...`); | ||
| await operation.promise(); | ||
|
|
||
| console.log( | ||
| 'Altered ShoppingCarts table to drop FKShoppingCartsCustomerName' | ||
| ); | ||
| } | ||
| dropForeignKeyConstraintDeleteCascade(); | ||
| // [END spanner_drop_foreign_key_constraint_delete_cascade] | ||
| } | ||
| process.on('unhandledRejection', err => { | ||
| console.error(err.message); | ||
| process.exitCode = 1; | ||
| }); | ||
| main(...process.argv.slice(2)); |
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