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docs(samples): add create range partition table (#458)
* docs(samples): add create range partition table

* docs(samples): address feedback
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Praful Makani committed Jun 17, 2020
1 parent 53e0c78 commit 68140d5e463304253a5cc28e6dae9cc73d1bf8d1
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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_create_table_range_partitioned]
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.RangePartitioning;
import com.google.cloud.bigquery.Schema;
import com.google.cloud.bigquery.StandardSQLTypeName;
import com.google.cloud.bigquery.StandardTableDefinition;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.TableInfo;

// Sample to create a range partitioned table
public class CreateRangePartitionedTable {

public static void runCreateRangePartitionedTable() {
// TODO(developer): Replace these variables before running the sample.
String datasetName = "MY_DATASET_NAME";
String tableName = "MY_TABLE_NAME";
Schema schema =
Schema.of(
Field.of("integerField", StandardSQLTypeName.INT64),
Field.of("stringField", StandardSQLTypeName.STRING),
Field.of("booleanField", StandardSQLTypeName.BOOL),
Field.of("dateField", StandardSQLTypeName.DATE));
createRangePartitionedTable(datasetName, tableName, schema);
}

public static void createRangePartitionedTable(
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();

TableId tableId = TableId.of(datasetName, tableName);

// Note: The field must be a top- level, NULLABLE/REQUIRED field.
// The only supported type is INTEGER/INT64
RangePartitioning partitioning =
RangePartitioning.newBuilder()
.setField("integerField")
.setRange(
RangePartitioning.Range.newBuilder()
.setStart(1L)
.setInterval(2L)
.setEnd(10L)
.build())
.build();

StandardTableDefinition tableDefinition =
StandardTableDefinition.newBuilder()
.setSchema(schema)
.setRangePartitioning(partitioning)
.build();
TableInfo tableInfo = TableInfo.newBuilder(tableId, tableDefinition).build();

bigquery.create(tableInfo);
System.out.println("Range partitioned table created successfully");
} catch (BigQueryException e) {
System.out.println("Range partitioned table was not created. \n" + e.toString());
}
}
}
// [END bigquery_create_table_range_partitioned]
@@ -0,0 +1,83 @@
/*
* 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 CreateRangePartitionedTableIT {

private String tableName;
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() {
tableName = "RANGE_PARTITIONED_TABLE_TEST" + UUID.randomUUID().toString().replace('-', '_');
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 testCreateRangePartitionedTable() {
Schema schema =
Schema.of(
Field.of("integerField", StandardSQLTypeName.INT64),
Field.of("stringField", StandardSQLTypeName.STRING),
Field.of("booleanField", StandardSQLTypeName.BOOL),
Field.of("dateField", StandardSQLTypeName.DATE));

CreateRangePartitionedTable.createRangePartitionedTable(
BIGQUERY_DATASET_NAME, tableName, schema);

assertThat(bout.toString()).contains("Range partitioned table created successfully");
}
}

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