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feat: new sample - Table: Column Based Time Partitioning (#118)
* feat: new sample - Table: Column Based Time Partitioning

* update based on comments
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stephaniewang526 committed Jan 22, 2020
1 parent eab8f27 commit eafa6ba8224aec093836e1a7d85ec32176ad7475
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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_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.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;
import com.google.cloud.bigquery.TimePartitioning;

public class CreatePartitionedTable {

public static void runCreatePartitionedTable() {
// TODO(developer): Replace these variables before running the sample.
String datasetName = "MY_DATASET_NAME";
String tableName = "MY_TABLE_NAME";
createPartitionedTable(datasetName, tableName);
}

public static void createPartitionedTable(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();

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

TimePartitioning partitioning = TimePartitioning.of(TimePartitioning.Type.DAY);

Schema schema =
Schema.of(
Field.of("stringField", StandardSQLTypeName.STRING),
Field.of("booleanField", StandardSQLTypeName.BOOL));
Field.of("dateField", StandardSQLTypeName.DATE);

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

bigquery.create(tableInfo);
System.out.println("Partitioned table created successfully");
} catch (BigQueryException e) {
System.out.println("Partitioned table was not created. \n" + e.toString());
}
}
}
// [END bigquery_create_table_partitioned]
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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 java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class CreatePartitionedTableIT {
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);
}

@After
public void tearDown() {
System.setOut(null);
}

@Test
public void testCreatePartitionedTable() {
String tableName = "MY_PARTITIONED_TABLE";

CreatePartitionedTable.createPartitionedTable(BIGQUERY_DATASET_NAME, tableName);

assertThat(bout.toString()).contains("Partitioned table created successfully");

// Clean up
DeleteTable.deleteTable(BIGQUERY_DATASET_NAME, tableName);
}
}

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