diff --git a/samples/snippets/src/main/java/com/example/bigquery/GetView.java b/samples/snippets/src/main/java/com/example/bigquery/GetView.java new file mode 100644 index 000000000..dd8a02d81 --- /dev/null +++ b/samples/snippets/src/main/java/com/example/bigquery/GetView.java @@ -0,0 +1,50 @@ +/* + * 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_view] +import com.google.cloud.bigquery.BigQuery; +import com.google.cloud.bigquery.BigQueryException; +import com.google.cloud.bigquery.BigQueryOptions; +import com.google.cloud.bigquery.Table; +import com.google.cloud.bigquery.TableId; + +// Sample to get a view +public class GetView { + + public static void runGetView() { + // TODO(developer): Replace these variables before running the sample. + String datasetName = "MY_DATASET_NAME"; + String viewName = "MY_VIEW_NAME"; + getView(datasetName, viewName); + } + + public static void getView(String datasetName, String viewName) { + 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(); + + TableId tableId = TableId.of(datasetName, viewName); + Table view = bigquery.getTable(tableId); + System.out.println("View retrieved successfully" + view.getDescription()); + } catch (BigQueryException e) { + System.out.println("View not retrieved. \n" + e.toString()); + } + } +} +// [END bigquery_get_view] diff --git a/samples/snippets/src/test/java/com/example/bigquery/GetViewIT.java b/samples/snippets/src/test/java/com/example/bigquery/GetViewIT.java new file mode 100644 index 000000000..ed681e3be --- /dev/null +++ b/samples/snippets/src/test/java/com/example/bigquery/GetViewIT.java @@ -0,0 +1,97 @@ +/* + * 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 com.google.cloud.bigquery.Field; +import com.google.cloud.bigquery.Schema; +import com.google.cloud.bigquery.StandardSQLTypeName; +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 GetViewIT { + + private String tableName; + private String viewName; + private ByteArrayOutputStream bout; + private PrintStream out; + + private static final String BIGQUERY_DATASET_NAME = requireEnvVar("BIGQUERY_DATASET_NAME"); + + 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("BIGQUERY_DATASET_NAME"); + } + + @Before + public void setUp() { + bout = new ByteArrayOutputStream(); + out = new PrintStream(bout); + System.setOut(out); + + // Create a new table to be deleted + tableName = "MY_TABLE_NAME_TEST_" + UUID.randomUUID().toString().substring(0, 8); + viewName = "MY_VIEW_NAME_TEST_" + UUID.randomUUID().toString().substring(0, 8); + + Schema schema = + Schema.of( + Field.of("timestampField", StandardSQLTypeName.TIMESTAMP), + Field.of("stringField", StandardSQLTypeName.STRING), + Field.of("booleanField", StandardSQLTypeName.BOOL)); + CreateTable.createTable(BIGQUERY_DATASET_NAME, tableName, schema); + + // Create a new view to be deleted + String query = + String.format( + "SELECT timestampField, stringField, booleanField FROM %s.%s", + BIGQUERY_DATASET_NAME, tableName); + CreateView.createView(BIGQUERY_DATASET_NAME, viewName, query); + + bout = new ByteArrayOutputStream(); + out = new PrintStream(bout); + System.setOut(out); + } + + @After + public void tearDown() { + // Clean up + DeleteTable.deleteTable(BIGQUERY_DATASET_NAME, viewName); + DeleteTable.deleteTable(BIGQUERY_DATASET_NAME, tableName); + System.setOut(null); + } + + @Test + public void testGetView() { + GetView.getView(BIGQUERY_DATASET_NAME, viewName); + assertThat(bout.toString()).contains("View retrieved successfully"); + } +}