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samples/src/main/java/com/example/bigquery/LoadParquet.java
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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. | ||
*/ | ||
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package com.example.bigquery; | ||
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// [START bigquery_load_table_gcs_parquet] | ||
import com.google.cloud.bigquery.BigQuery; | ||
import com.google.cloud.bigquery.BigQueryException; | ||
import com.google.cloud.bigquery.BigQueryOptions; | ||
import com.google.cloud.bigquery.FormatOptions; | ||
import com.google.cloud.bigquery.Job; | ||
import com.google.cloud.bigquery.JobInfo; | ||
import com.google.cloud.bigquery.LoadJobConfiguration; | ||
import com.google.cloud.bigquery.TableId; | ||
import java.math.BigInteger; | ||
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public class LoadParquet { | ||
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public static void runLoadParquet() { | ||
// TODO(developer): Replace these variables before running the sample. | ||
String datasetName = "MY_DATASET_NAME"; | ||
loadParquet(datasetName); | ||
} | ||
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public static void loadParquet(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(); | ||
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String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.parquet"; | ||
TableId tableId = TableId.of(datasetName, "us_states"); | ||
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LoadJobConfiguration configuration = | ||
LoadJobConfiguration.builder(tableId, sourceUri) | ||
.setFormatOptions(FormatOptions.parquet()) | ||
.build(); | ||
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// For more information on Job see: | ||
// https://googleapis.dev/java/google-cloud-clients/latest/index.html?com/google/cloud/bigquery/package-summary.html | ||
// Load the table | ||
Job job = bigquery.create(JobInfo.of(configuration)); | ||
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// Blocks until this load table job completes its execution, either failing or succeeding. | ||
Job completedJob = job.waitFor(); | ||
if (completedJob == null) { | ||
System.out.println("Job not executed since it no longer exists."); | ||
return; | ||
} else if (completedJob.getStatus().getError() != null) { | ||
System.out.println( | ||
"BigQuery was unable to load the table due to an error: \n" | ||
+ job.getStatus().getError()); | ||
return; | ||
} | ||
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// Check number of rows loaded into the table | ||
BigInteger numRows = bigquery.getTable(tableId).getNumRows(); | ||
System.out.printf("Loaded %d rows. \n", numRows); | ||
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System.out.println("GCS parquet loaded successfully."); | ||
} catch (BigQueryException | InterruptedException e) { | ||
System.out.println("GCS Parquet was not loaded. \n" + e.toString()); | ||
} | ||
} | ||
} | ||
// [END bigquery_load_table_gcs_parquet] |
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samples/src/test/java/com/example/bigquery/LoadParquetIT.java
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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. | ||
*/ | ||
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package com.example.bigquery; | ||
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import static com.google.common.truth.Truth.assertThat; | ||
import static junit.framework.TestCase.assertNotNull; | ||
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import java.io.ByteArrayOutputStream; | ||
import java.io.PrintStream; | ||
import org.junit.After; | ||
import org.junit.Before; | ||
import org.junit.BeforeClass; | ||
import org.junit.Test; | ||
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public class LoadParquetIT { | ||
private ByteArrayOutputStream bout; | ||
private PrintStream out; | ||
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private static final String BIGQUERY_DATASET_NAME = System.getenv("BIGQUERY_DATASET_NAME"); | ||
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private static void requireEnvVar(String varName) { | ||
assertNotNull( | ||
"Environment variable " + varName + " is required to perform these tests.", | ||
System.getenv(varName)); | ||
} | ||
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@BeforeClass | ||
public static void checkRequirements() { | ||
requireEnvVar("BIGQUERY_DATASET_NAME"); | ||
} | ||
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@Before | ||
public void setUp() { | ||
bout = new ByteArrayOutputStream(); | ||
out = new PrintStream(bout); | ||
System.setOut(out); | ||
} | ||
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@After | ||
public void tearDown() { | ||
System.setOut(null); | ||
} | ||
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@Test | ||
public void loadParquet() { | ||
LoadParquet.loadParquet(BIGQUERY_DATASET_NAME); | ||
assertThat(bout.toString()).contains("GCS parquet loaded successfully."); | ||
} | ||
} |