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feat: adding samples for Jsonb data type #2147
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57 changes: 57 additions & 0 deletions
57
samples/snippets/src/main/java/com/example/spanner/AddJsonbColumnSample.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| /* | ||
| * Copyright 2022 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| package com.example.spanner; | ||
|
|
||
| // [START spanner_postgresql_jsonb_add_column] | ||
| import com.google.api.gax.longrunning.OperationFuture; | ||
| import com.google.cloud.spanner.DatabaseAdminClient; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata; | ||
| import java.util.concurrent.ExecutionException; | ||
|
|
||
| class AddJsonbColumnSample { | ||
|
|
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| static void addJsonbColumn() throws InterruptedException, ExecutionException { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| String projectId = "my-project"; | ||
| String instanceId = "my-instance"; | ||
| String databaseId = "my-database"; | ||
|
|
||
| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) { | ||
| DatabaseAdminClient adminClient = spanner.getDatabaseAdminClient(); | ||
| addJsonbColumn(adminClient, instanceId, databaseId); | ||
| } | ||
| } | ||
|
|
||
| static void addJsonbColumn(DatabaseAdminClient adminClient, String instanceId, String databaseId) | ||
| throws InterruptedException, ExecutionException { | ||
| OperationFuture<Void, UpdateDatabaseDdlMetadata> operation = | ||
| adminClient.updateDatabaseDdl( | ||
| instanceId, | ||
| databaseId, | ||
| ImmutableList.of("ALTER TABLE Venues ADD COLUMN VenueDetails JSONB"), | ||
| null); | ||
| // Wait for the operation to finish. | ||
| // This will throw an ExecutionException if the operation fails. | ||
| operation.get(); | ||
| System.out.printf("Successfully added column `VenueDetails`%n"); | ||
| } | ||
| } | ||
| // [END spanner_postgresql_jsonb_add_column] |
64 changes: 64 additions & 0 deletions
64
samples/snippets/src/main/java/com/example/spanner/QueryWithJsonbParameterSample.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright 2022 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| package com.example.spanner; | ||
|
|
||
| // [START spanner_postgresql_jsonb_query_parameter] | ||
| import com.google.cloud.spanner.DatabaseClient; | ||
| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.cloud.spanner.ResultSet; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.cloud.spanner.Statement; | ||
| import com.google.cloud.spanner.Value; | ||
|
|
||
| class QueryWithJsonbParameterSample { | ||
|
|
||
| static void queryWithJsonbParameter() { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| String projectId = "my-project"; | ||
| String instanceId = "my-instance"; | ||
| String databaseId = "my-database"; | ||
|
|
||
| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) { | ||
| DatabaseClient client = | ||
| spanner.getDatabaseClient(DatabaseId.of(projectId, instanceId, databaseId)); | ||
| queryWithJsonbParameter(client); | ||
| } | ||
| } | ||
|
|
||
| static void queryWithJsonbParameter(DatabaseClient client) { | ||
| int rating = 2; | ||
| Statement statement = | ||
| Statement.newBuilder( | ||
| "SELECT VenueId, VenueDetails\n" | ||
| + "FROM Venues\n" | ||
| + "WHERE CAST(venuedetails ->> 'rating' " | ||
| + "AS INTEGER) > $1") | ||
| .bind("p1") | ||
| .to(Value.int64(rating)) | ||
| .build(); | ||
| try (ResultSet resultSet = client.singleUse().executeQuery(statement)) { | ||
| while (resultSet.next()) { | ||
| System.out.printf( | ||
| "VenueId: %s, VenueDetails: %s%n", | ||
| resultSet.getLong("venueid"), resultSet.getPgJsonb("venuedetails")); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| // [END spanner_postgresql_jsonb_query_parameter] |
78 changes: 78 additions & 0 deletions
78
samples/snippets/src/main/java/com/example/spanner/UpdateJsonbDataSample.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Copyright 2022 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| package com.example.spanner; | ||
|
|
||
| // [START spanner_postgresql_jsonb_update_data] | ||
| import com.google.cloud.spanner.DatabaseClient; | ||
| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.cloud.spanner.Mutation; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.cloud.spanner.Value; | ||
| import com.google.common.collect.ImmutableList; | ||
|
|
||
| class UpdateJsonbDataSample { | ||
|
|
||
| static void updateJsonbData() { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| String projectId = "my-project"; | ||
| String instanceId = "my-instance"; | ||
| String databaseId = "my-database"; | ||
|
|
||
| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) { | ||
| DatabaseClient client = | ||
| spanner.getDatabaseClient(DatabaseId.of(projectId, instanceId, databaseId)); | ||
| updateJsonbData(client); | ||
| } | ||
| } | ||
|
|
||
| static void updateJsonbData(DatabaseClient client) { | ||
| // PG JSONB takes the last value in the case of duplicate keys. | ||
| // PG JSONB sorts first by key length and then lexicographically with | ||
| // equivalent key length. | ||
| client.write( | ||
| ImmutableList.of( | ||
| Mutation.newInsertOrUpdateBuilder("Venues") | ||
| .set("VenueId") | ||
| .to(4L) | ||
| .set("VenueDetails") | ||
| .to( | ||
| Value.pgJsonb( | ||
| "[{\"name\":\"room 1\",\"open\":true,\"name\":\"room 3\"}," | ||
| + "{\"name\":\"room 2\",\"open\":false}]")) | ||
| .build(), | ||
| Mutation.newInsertOrUpdateBuilder("Venues") | ||
| .set("VenueId") | ||
| .to(19L) | ||
| .set("VenueDetails") | ||
| .to(Value.pgJsonb("{\"rating\":9,\"open\":true}")) | ||
| .build(), | ||
| Mutation.newInsertOrUpdateBuilder("Venues") | ||
| .set("VenueId") | ||
| .to(42L) | ||
| .set("VenueDetails") | ||
| .to( | ||
| Value.pgJsonb( | ||
| "{\"name\":null," | ||
| + "\"open\":{\"Monday\":true,\"Tuesday\":false}," | ||
| + "\"tags\":[\"large\",\"airy\"]}")) | ||
| .build())); | ||
| System.out.println("Venues successfully updated"); | ||
| } | ||
| } | ||
| // [END spanner_postgresql_jsonb_update_data] | ||
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