diff --git a/samples/src/main/java/com/example/bigquery/LoadParquet.java b/samples/src/main/java/com/example/bigquery/LoadParquet.java index ed04ba4dd..580b6183f 100644 --- a/samples/src/main/java/com/example/bigquery/LoadParquet.java +++ b/samples/src/main/java/com/example/bigquery/LoadParquet.java @@ -43,7 +43,7 @@ public static void loadParquet(String datasetName) { String sourceUri = "gs://cloud-samples-data/bigquery/us-states/us-states.parquet"; TableId tableId = TableId.of(datasetName, "us_states"); - + LoadJobConfiguration configuration = LoadJobConfiguration.builder(tableId, sourceUri) .setFormatOptions(FormatOptions.parquet()) diff --git a/samples/src/main/java/com/example/bigquery/QueryWithNamedParameters.java b/samples/src/main/java/com/example/bigquery/QueryWithNamedParameters.java new file mode 100644 index 000000000..4f99241bb --- /dev/null +++ b/samples/src/main/java/com/example/bigquery/QueryWithNamedParameters.java @@ -0,0 +1,63 @@ +/* + * 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_query_params_named] +import com.google.cloud.bigquery.BigQuery; +import com.google.cloud.bigquery.BigQueryException; +import com.google.cloud.bigquery.BigQueryOptions; +import com.google.cloud.bigquery.QueryJobConfiguration; +import com.google.cloud.bigquery.QueryParameterValue; +import com.google.cloud.bigquery.TableResult; + +public class QueryWithNamedParameters { + + public static void queryWithNamedParameters() { + 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 corpus = "romeoandjuliet"; + long minWordCount = 250; + String query = + "SELECT word, word_count\n" + + "FROM `bigquery-public-data.samples.shakespeare`\n" + + "WHERE corpus = @corpus\n" + + "AND word_count >= @min_word_count\n" + + "ORDER BY word_count DESC"; + + // Note: Standard SQL is required to use query parameters. + QueryJobConfiguration queryConfig = + QueryJobConfiguration.newBuilder(query) + .addNamedParameter("corpus", QueryParameterValue.string(corpus)) + .addNamedParameter("min_word_count", QueryParameterValue.int64(minWordCount)) + .build(); + + TableResult results = bigquery.query(queryConfig); + + results + .iterateAll() + .forEach(row -> row.forEach(val -> System.out.printf("%s,", val.toString()))); + + System.out.println("Query with named parameters performed successfully."); + } catch (BigQueryException | InterruptedException e) { + System.out.println("Query not performed \n" + e.toString()); + } + } +} +// [END bigquery_query_params_named] diff --git a/samples/src/test/java/com/example/bigquery/QueryWithNamedParametersIT.java b/samples/src/test/java/com/example/bigquery/QueryWithNamedParametersIT.java new file mode 100644 index 000000000..c461f6a69 --- /dev/null +++ b/samples/src/test/java/com/example/bigquery/QueryWithNamedParametersIT.java @@ -0,0 +1,48 @@ +/* + * 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 java.io.ByteArrayOutputStream; +import java.io.PrintStream; +import org.junit.After; +import org.junit.Before; +import org.junit.Test; + +public class QueryWithNamedParametersIT { + private ByteArrayOutputStream bout; + private PrintStream out; + + @Before + public void setUp() { + bout = new ByteArrayOutputStream(); + out = new PrintStream(bout); + System.setOut(out); + } + + @After + public void tearDown() { + System.setOut(null); + } + + @Test + public void testQueryWithNamedParameters() { + QueryWithNamedParameters.queryWithNamedParameters(); + assertThat(bout.toString()).contains("Query with named parameters performed successfully."); + } +}