/
QueryWithStructsParameters.java
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/
QueryWithStructsParameters.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.
*/
package com.example.bigquery;
// [START bigquery_query_params_structs]
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;
import java.util.HashMap;
import java.util.Map;
public class QueryWithStructsParameters {
public static void queryWithStructsParameters() {
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();
// Create struct
Map<String, QueryParameterValue> struct = new HashMap<>();
struct.put("booleanField", QueryParameterValue.bool(true));
struct.put("integerField", QueryParameterValue.string("test-stringField"));
struct.put("stringField", QueryParameterValue.int64(10));
QueryParameterValue recordValue = QueryParameterValue.struct(struct);
String query = "SELECT STRUCT(@recordField) AS record";
QueryJobConfiguration queryConfig =
QueryJobConfiguration.newBuilder(query)
.setUseLegacySql(false)
.addNamedParameter("recordField", recordValue)
.build();
TableResult results = bigquery.query(queryConfig);
results
.iterateAll()
.forEach(row -> row.forEach(val -> System.out.printf("%s", val.toString())));
System.out.println("Query with struct parameter performed successfully.");
} catch (BigQueryException | InterruptedException e) {
System.out.println("Query not performed \n" + e.toString());
}
}
}
// [END bigquery_query_params_structs]