feat(bigquery): add helper classes for cloud-client testing (1/3)

bigquery/cloud-client/snippets/pom.xml

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+<?xml version='1.0' encoding='UTF-8'?>
+<!--
+Copyright 2025 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.example.bigquery</groupId>
+  <artifactId>cloud-client-snippets</artifactId>
+  <packaging>jar</packaging>
+  <name>Google Cloud BigQuery Cloud Client Snippets</name>
+
+  <!--
+    The parent pom defines common style checks and testing strategies for our samples.
+    Removing or replacing it should not affect the execution of the samples in anyway.
+  -->
+  <parent>
+    <groupId>com.google.cloud.samples</groupId>
+    <artifactId>shared-configuration</artifactId>
+    <version>1.2.0</version>
+  </parent>
+
+  <properties>
+    <maven.compiler.target>21</maven.compiler.target>
+    <maven.compiler.source>21</maven.compiler.source>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>libraries-bom</artifactId>
+        <version>26.32.0</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.cloud</groupId>
+      <artifactId>google-cloud-bigquery</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13.2</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.google.truth</groupId>
+      <artifactId>truth</artifactId>
+      <version>1.4.4</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+</project>

bigquery/cloud-client/snippets/src/main/java/com/example/bigquery/CreateDataset.java

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+/*
+ * Copyright 2025 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 com.google.cloud.bigquery.BigQuery;
+import com.google.cloud.bigquery.BigQueryException;
+import com.google.cloud.bigquery.BigQueryOptions;
+import com.google.cloud.bigquery.Dataset;
+import com.google.cloud.bigquery.DatasetId;
+import com.google.cloud.bigquery.DatasetInfo;
+
+public class CreateDataset {
+  public static void main(String[] args) {
+    // TODO(developer): Replace these variables before running the sample.
+    // Project where to create the dataset.
+    String projectId = "MY_PROJECT_ID";
+    String datasetName = "MY_DATASET_NAME";
+    createDataset(projectId, datasetName);
+  }
+
+  public static void createDataset(String projectId, 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();
+
+      String location = "US";
+
+      // Create datasetId with the projectId and the datasetName, and set it into the datasetInfo.
+      DatasetId datasetId = DatasetId.of(projectId, datasetName);
+      DatasetInfo datasetInfo = DatasetInfo.newBuilder(datasetId).setLocation(location).build();
+
+      // Create Dataset.
+      Dataset dataset = bigquery.create(datasetInfo);
+      System.out.println(
+          "Dataset \"" + dataset.getDatasetId().getDataset() + "\" created successfully");
+    } catch (BigQueryException e) {
+      System.out.println("Dataset was not created. \n" + e.toString());
+    }
+  }
+}

bigquery/cloud-client/snippets/src/main/java/com/example/bigquery/CreateTable.java

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+/*
+ * Copyright 2025 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 com.google.cloud.bigquery.BigQuery;
+import com.google.cloud.bigquery.BigQueryException;
+import com.google.cloud.bigquery.BigQueryOptions;
+import com.google.cloud.bigquery.Field;
+import com.google.cloud.bigquery.Schema;
+import com.google.cloud.bigquery.StandardSQLTypeName;
+import com.google.cloud.bigquery.StandardTableDefinition;
+import com.google.cloud.bigquery.Table;
+import com.google.cloud.bigquery.TableDefinition;
+import com.google.cloud.bigquery.TableId;
+import com.google.cloud.bigquery.TableInfo;
+
+public class CreateTable {
+
+  public static void main(String[] args) {
+    // TODO(developer): Replace these variables before running the sample.
+    // Project and dataset name to create a new table
+    String projectId = "MY_PROJECT_ID";
+    String datasetName = "MY_DATASET_NAME";
+    String tableName = "MY_TABLE_NAME";
+
+    // Schema for a Google BigQuery Table.
+    Schema schema =
+        Schema.of(
+            Field.of("stringField", StandardSQLTypeName.STRING),
+            Field.of("isBooleanField", StandardSQLTypeName.BOOL));
+    createTable(projectId, datasetName, tableName, schema);
+  }
+
+  public static void createTable(
+      String projectId, String datasetName, String tableName, Schema schema) {
+    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();
+
+      // Create table identity given the projectId, the datasetName and the tableName.
+      TableId tableId = TableId.of(projectId, datasetName, tableName);
+      // Create table definition to build the table information
+      TableDefinition tableDefinition = StandardTableDefinition.of(schema);
+      TableInfo tableInfo = TableInfo.newBuilder(tableId, tableDefinition).build();
+
+      // Create table
+      Table table = bigquery.create(tableInfo);
+      System.out.println("Table \"" + table.getTableId().getTable() + "\" created successfully");
+    } catch (BigQueryException e) {
+      System.out.println("Table was not created. \n" + e.toString());
+    }
+  }
+}

bigquery/cloud-client/snippets/src/main/java/com/example/bigquery/CreateView.java

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+/*
+ * Copyright 2025 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 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;
+import com.google.cloud.bigquery.TableInfo;
+import com.google.cloud.bigquery.ViewDefinition;
+
+// Sample to create a view
+public class CreateView {
+
+  public static void main(String[] args) {
+    // TODO(developer): Replace these variables before running the sample.
+    // Project, dataset and table name to create a new view
+    String projectId = "MY_PROJECT_ID";
+    String datasetName = "MY_DATASET_NAME";
+    String tableName = "MY_TABLE_NAME";
+    String viewName = "MY_VIEW_NAME";
+    String query =
+        String.format("SELECT stringField, isBooleanField FROM %s.%s", datasetName, tableName);
+    createView(projectId, datasetName, viewName, query);
+  }
+
+  public static void createView(
+      String projectId, String datasetName, String viewName, String query) {
+    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();
+
+      // Create table identity given the projectId, the datasetName and the viewName.
+      TableId tableId = TableId.of(projectId, datasetName, viewName);
+
+      // Create view definition to generate the table information.
+      ViewDefinition viewDefinition =
+          ViewDefinition.newBuilder(query).setUseLegacySql(false).build();
+      TableInfo tableInfo = TableInfo.of(tableId, viewDefinition);
+
+      // Create view.
+      Table view = bigquery.create(tableInfo);
+      System.out.println("View \"" + view.getTableId().getTable() + "\" created successfully");
+    } catch (BigQueryException e) {
+      System.out.println("View was not created. \n" + e.toString());
+    }
+  }
+}

bigquery/cloud-client/snippets/src/main/java/com/example/bigquery/DeleteDataset.java

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+/*
+ * Copyright 2025 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 com.google.cloud.bigquery.BigQuery;
+import com.google.cloud.bigquery.BigQuery.DatasetDeleteOption;
+import com.google.cloud.bigquery.BigQueryException;
+import com.google.cloud.bigquery.BigQueryOptions;
+import com.google.cloud.bigquery.DatasetId;
+
+public class DeleteDataset {
+
+  public static void main(String[] args) {
+    // TODO(developer): Replace these variables before running the sample.
+    // Project from which to delete the dataset
+    String projectId = "MY_PROJECT_ID";
+    String datasetName = "MY_DATASET_NAME";
+    deleteDataset(projectId, datasetName);
+  }
+
+  public static void deleteDataset(String projectId, 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();
+
+      // Create datasetId with the projectId and the datasetName.
+      DatasetId datasetId = DatasetId.of(projectId, datasetName);
+
+      // Delete dataset.
+      boolean success = bigquery.delete(datasetId, DatasetDeleteOption.deleteContents());
+      if (success) {
+        System.out.println("Dataset \"" + datasetName + "\" deleted successfully");
+      } else {
+        System.out.println("Dataset was not found");
+      }
+    } catch (BigQueryException e) {
+      System.out.println("Dataset was not deleted. \n" + e.toString());
+    }
+  }
+}

bigquery/cloud-client/snippets/src/main/java/com/example/bigquery/DeleteTable.java

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+/*
+ * Copyright 2025 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 com.google.cloud.bigquery.BigQuery;
+import com.google.cloud.bigquery.BigQueryException;
+import com.google.cloud.bigquery.BigQueryOptions;
+import com.google.cloud.bigquery.TableId;
+
+public class DeleteTable {
+
+  public static void main(String[] args) {
+    // TODO(developer): Replace these variables before running the sample.
+    // Project, dataset and table name to create a new table
+    String projectId = "MY_PROJECT_ID";
+    String datasetName = "MY_DATASET_NAME";
+    String tableName = "MY_TABLE_NAME";
+    deleteTable(projectId, datasetName, tableName);
+  }
+
+  public static void deleteTable(String projectId, String datasetName, String tableName) {
+    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();
+
+      // Create table identity given the projectId, the datasetName and the tableName.
+      TableId tableId = TableId.of(projectId, datasetName, tableName);
+
+      // Delete the table.
+      boolean success = bigquery.delete(tableId);
+      if (success) {
+        System.out.println("Table \"" + tableName + "\" deleted successfully");
+      } else {
+        System.out.println("Table was not found");
+      }
+    } catch (BigQueryException e) {
+      System.out.println("Table was not deleted. \n" + e.toString());
+    }
+  }
+}