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docs(samples): add insert rows without rowids in a table (#573)
* docs(samples): add insert rows without rowids in a table

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Co-authored-by: Stephanie Wang <stephaniewang526@users.noreply.github.com>
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Praful Makani and stephaniewang526 committed Jul 21, 2020
1 parent 29b8a7f commit b07dee31e4b6fec8bf05f23ed52006829dbdbc4a
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/*
* 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_table_insert_rows_explicit_none_insert_ids]
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryError;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.InsertAllRequest;
import com.google.cloud.bigquery.InsertAllResponse;
import com.google.cloud.bigquery.TableId;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

// Sample to insert rows without row ids in a table
public class TableInsertRowsWithoutRowIds {

public static void runTableInsertRowsWithoutRowIds() {
// TODO(developer): Replace these variables before running the sample.
String datasetName = "MY_DATASET_NAME";
String tableName = "MY_TABLE_NAME";
// Create rows to insert
Map<String, Object> rowContent1 = new HashMap<>();
rowContent1.put("stringField", "Phred Phlyntstone");
rowContent1.put("numericField", 32);
Map<String, Object> rowContent2 = new HashMap<>();
rowContent2.put("stringField", "Wylma Phlyntstone");
rowContent2.put("numericField", 29);
List<InsertAllRequest.RowToInsert> rowContent = new ArrayList<>();
// insertId is null if not specified
rowContent.add(InsertAllRequest.RowToInsert.of(rowContent1));
rowContent.add(InsertAllRequest.RowToInsert.of(rowContent2));
tableInsertRowsWithoutRowIds(datasetName, tableName, rowContent);
}

public static void tableInsertRowsWithoutRowIds(
String datasetName, String tableName, Iterable<InsertAllRequest.RowToInsert> rows) {
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();

// Get table
TableId tableId = TableId.of(datasetName, tableName);

// Inserts rowContent into datasetName:tableId.
InsertAllResponse response =
bigquery.insertAll(InsertAllRequest.newBuilder(tableId).setRows(rows).build());

if (response.hasErrors()) {
// If any of the insertions failed, this lets you inspect the errors
for (Map.Entry<Long, List<BigQueryError>> entry : response.getInsertErrors().entrySet()) {
System.out.println("Response error: \n" + entry.getValue());
}
}
System.out.println("Rows successfully inserted into table without row ids");
} catch (BigQueryException e) {
System.out.println("Insert operation not performed \n" + e.toString());
}
}
}
// [END bigquery_table_insert_rows_explicit_none_insert_ids]
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/*
* 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.InsertAllRequest;
import com.google.cloud.bigquery.LegacySQLTypeName;
import com.google.cloud.bigquery.Schema;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class TableInsertRowsWithoutRowIdsIT {

private String tableName;
private ByteArrayOutputStream bout;
private PrintStream out;

private static final String BIGQUERY_DATASET_NAME = System.getenv("BIGQUERY_DATASET_NAME");

private static void requireEnvVar(String varName) {
assertNotNull(
"Environment variable " + varName + " is required to perform these tests.",
System.getenv(varName));
}

@BeforeClass
public static void checkRequirements() {
requireEnvVar("BIGQUERY_DATASET_NAME");
}

@Before
public void setUp() {
bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
System.setOut(out);

tableName = "INSERT_ROW_WITHOUT_ROW_ID_TEST" + UUID.randomUUID().toString().substring(0, 8);
Schema schema =
Schema.of(
Field.of("stringField", LegacySQLTypeName.STRING),
Field.of("numericField", LegacySQLTypeName.NUMERIC));

// Create table in dataset for testing
CreateTable.createTable(BIGQUERY_DATASET_NAME, tableName, schema);

bout = new ByteArrayOutputStream();
out = new PrintStream(bout);
System.setOut(out);
}

@After
public void tearDown() {
// Clean up
DeleteTable.deleteTable(BIGQUERY_DATASET_NAME, tableName);
System.setOut(null);
}

@Test
public void testTableInsertRowsWithoutRowIds() {
// Create rows to insert
Map<String, Object> rowContent1 = new HashMap<>();
rowContent1.put("stringField", "Phred Phlyntstone");
rowContent1.put("numericField", 32);
Map<String, Object> rowContent2 = new HashMap<>();
rowContent2.put("stringField", "Wylma Phlyntstone");
rowContent2.put("numericField", 29);
List<InsertAllRequest.RowToInsert> rowContent = new ArrayList<>();
rowContent.add(InsertAllRequest.RowToInsert.of(rowContent1));
rowContent.add(InsertAllRequest.RowToInsert.of(rowContent2));
TableInsertRowsWithoutRowIds.tableInsertRowsWithoutRowIds(
BIGQUERY_DATASET_NAME, tableName, rowContent);
assertThat(bout.toString()).contains("Rows successfully inserted into table without row ids");
}
}

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