| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.sdk.extensions.sql.meta.provider.bigquery; |
| |
| import java.io.Serializable; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.extensions.sql.impl.schema.BaseBeamTable; |
| import org.apache.beam.sdk.extensions.sql.meta.Table; |
| import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO; |
| import org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils; |
| import org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils.ConversionOptions; |
| import org.apache.beam.sdk.schemas.SchemaCoder; |
| import org.apache.beam.sdk.values.PBegin; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.POutput; |
| import org.apache.beam.sdk.values.Row; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.annotations.VisibleForTesting; |
| |
| /** |
| * {@code BigQueryTable} represent a BigQuery table as a target. This provider does not currently |
| * support being a source. |
| */ |
| @Experimental |
| class BigQueryTable extends BaseBeamTable implements Serializable { |
| @VisibleForTesting final String bqLocation; |
| private final ConversionOptions conversionOptions; |
| |
| BigQueryTable(Table table, BigQueryUtils.ConversionOptions options) { |
| super(table.getSchema()); |
| this.conversionOptions = options; |
| this.bqLocation = table.getLocation(); |
| } |
| |
| @Override |
| public PCollection.IsBounded isBounded() { |
| return PCollection.IsBounded.BOUNDED; |
| } |
| |
| @Override |
| public PCollection<Row> buildIOReader(PBegin begin) { |
| return begin |
| .apply( |
| "Read Input BQ Rows", |
| BigQueryIO.read( |
| record -> |
| BigQueryUtils.toBeamRow(record.getRecord(), getSchema(), conversionOptions)) |
| .from(bqLocation) |
| .withCoder(SchemaCoder.of(getSchema()))) |
| .setRowSchema(getSchema()); |
| } |
| |
| @Override |
| public POutput buildIOWriter(PCollection<Row> input) { |
| return input.apply( |
| BigQueryIO.<Row>write() |
| .withSchema(BigQueryUtils.toTableSchema(getSchema())) |
| .withFormatFunction(BigQueryUtils.toTableRow()) |
| .to(bqLocation)); |
| } |
| } |