diff --git a/samples/snippets/src/main/java/com/example/bigquery/GetDatasetLabels.java b/samples/snippets/src/main/java/com/example/bigquery/GetDatasetLabels.java new file mode 100644 index 000000000..82de732fd --- /dev/null +++ b/samples/snippets/src/main/java/com/example/bigquery/GetDatasetLabels.java @@ -0,0 +1,49 @@ +/* + * Copyright 2020 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. + */ + +package com.example.bigquery; + +// [START bigquery_get_dataset_labels] +import com.google.cloud.bigquery.BigQuery; +import com.google.cloud.bigquery.BigQueryException; +import com.google.cloud.bigquery.BigQueryOptions; +import com.google.cloud.bigquery.Dataset; + +// Sample to get dataset labels +public class GetDatasetLabels { + + public static void runGetDatasetLabels() { + // TODO(developer): Replace these variables before running the sample. + String datasetName = "MY_DATASET_NAME"; + getDatasetLabels(datasetName); + } + + public static void getDatasetLabels(String datasetName) { + try { + // Initialize client that will be used to send requests. This client only needs to be created + // once, and can be reused for multiple requests. + BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService(); + + Dataset dataset = bigquery.getDataset(datasetName); + dataset + .getLabels() + .forEach((key, value) -> System.out.println("Retrieved labels successfully")); + } catch (BigQueryException e) { + System.out.println("Label was not found. \n" + e.toString()); + } + } +} +// [END bigquery_get_dataset_labels] diff --git a/samples/snippets/src/test/java/com/example/bigquery/GetDatasetLabelsIT.java b/samples/snippets/src/test/java/com/example/bigquery/GetDatasetLabelsIT.java new file mode 100644 index 000000000..f2661172d --- /dev/null +++ b/samples/snippets/src/test/java/com/example/bigquery/GetDatasetLabelsIT.java @@ -0,0 +1,79 @@ +/* + * Copyright 2020 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. + */ + +package com.example.bigquery; + +import static com.google.common.truth.Truth.assertThat; +import static junit.framework.TestCase.assertNotNull; + +import java.io.ByteArrayOutputStream; +import java.io.PrintStream; +import java.util.UUID; +import org.junit.After; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; + +public class GetDatasetLabelsIT { + + private String datasetName; + private ByteArrayOutputStream bout; + private PrintStream out; + + private static final String PROJECT_ID = requireEnvVar("GOOGLE_CLOUD_PROJECT"); + + private static String requireEnvVar(String varName) { + String value = System.getenv(varName); + assertNotNull( + "Environment variable " + varName + " is required to perform these tests.", + System.getenv(varName)); + return value; + } + + @BeforeClass + public static void checkRequirements() { + requireEnvVar("GOOGLE_CLOUD_PROJECT"); + } + + @Before + public void setUp() { + bout = new ByteArrayOutputStream(); + out = new PrintStream(bout); + System.setOut(out); + // create a temporary dataset + datasetName = "MY_DATASET_TEST_" + UUID.randomUUID().toString().substring(0, 8); + CreateDataset.createDataset(datasetName); + // add a label on dataset + LabelDataset.labelDataset(datasetName); + + bout = new ByteArrayOutputStream(); + out = new PrintStream(bout); + System.setOut(out); + } + + @After + public void tearDown() { + // delete a temporary dataset + DeleteDataset.deleteDataset(PROJECT_ID, datasetName); + System.setOut(null); + } + + @Test + public void testGetDatasetLabels() { + GetDatasetLabels.getDatasetLabels(datasetName); + assertThat(bout.toString()).contains("Retrieved labels successfully"); + } +}