Examples with TableDataWriteChannel com.google.cloud.bigquery.TableDataWriteChannel used on opensource projects

Example 1 with TableDataWriteChannel

use of com.google.cloud.bigquery.TableDataWriteChannel in project google-cloud-java by GoogleCloudPlatform.

the class ITBigQueryTest method testInsertFromFile.

@Test
public void testInsertFromFile() throws InterruptedException, IOException, TimeoutException {
    String destinationTableName = "test_insert_from_file_table";
    TableId tableId = TableId.of(DATASET, destinationTableName);
    WriteChannelConfiguration configuration = WriteChannelConfiguration.newBuilder(tableId).setFormatOptions(FormatOptions.json()).setCreateDisposition(JobInfo.CreateDisposition.CREATE_IF_NEEDED).setSchema(TABLE_SCHEMA).build();
    TableDataWriteChannel channel = bigquery.writer(configuration);
    try {
        channel.write(ByteBuffer.wrap(JSON_CONTENT.getBytes(StandardCharsets.UTF_8)));
    } finally {
        channel.close();
    }
    Job job = channel.getJob().waitFor();
    LoadStatistics statistics = job.getStatistics();
    assertEquals(1L, statistics.getInputFiles().longValue());
    assertEquals(2L, statistics.getOutputRows().longValue());
    LoadJobConfiguration jobConfiguration = job.getConfiguration();
    assertEquals(TABLE_SCHEMA, jobConfiguration.getSchema());
    assertNull(jobConfiguration.getSourceUris());
    assertNull(job.getStatus().getError());
    Page<List<FieldValue>> rows = bigquery.listTableData(tableId);
    int rowCount = 0;
    for (List<FieldValue> row : rows.getValues()) {
        FieldValue timestampCell = row.get(0);
        FieldValue stringCell = row.get(1);
        FieldValue integerArrayCell = row.get(2);
        FieldValue booleanCell = row.get(3);
        FieldValue bytesCell = row.get(4);
        FieldValue recordCell = row.get(5);
        FieldValue integerCell = row.get(6);
        FieldValue floatCell = row.get(7);
        assertEquals(FieldValue.Attribute.PRIMITIVE, timestampCell.getAttribute());
        assertEquals(FieldValue.Attribute.PRIMITIVE, stringCell.getAttribute());
        assertEquals(FieldValue.Attribute.REPEATED, integerArrayCell.getAttribute());
        assertEquals(FieldValue.Attribute.PRIMITIVE, booleanCell.getAttribute());
        assertEquals(FieldValue.Attribute.PRIMITIVE, bytesCell.getAttribute());
        assertEquals(FieldValue.Attribute.RECORD, recordCell.getAttribute());
        assertEquals(FieldValue.Attribute.PRIMITIVE, integerCell.getAttribute());
        assertEquals(FieldValue.Attribute.PRIMITIVE, floatCell.getAttribute());
        assertEquals(1408452095220000L, timestampCell.getTimestampValue());
        assertEquals("stringValue", stringCell.getStringValue());
        assertEquals(0, integerArrayCell.getRepeatedValue().get(0).getLongValue());
        assertEquals(1, integerArrayCell.getRepeatedValue().get(1).getLongValue());
        assertEquals(false, booleanCell.getBooleanValue());
        assertArrayEquals(BYTES, bytesCell.getBytesValue());
        assertEquals(-14182916000000L, recordCell.getRecordValue().get(0).getTimestampValue());
        assertTrue(recordCell.getRecordValue().get(1).isNull());
        assertEquals(1, recordCell.getRecordValue().get(2).getRepeatedValue().get(0).getLongValue());
        assertEquals(0, recordCell.getRecordValue().get(2).getRepeatedValue().get(1).getLongValue());
        assertEquals(true, recordCell.getRecordValue().get(3).getBooleanValue());
        assertEquals(3, integerCell.getLongValue());
        assertEquals(1.2, floatCell.getDoubleValue(), 0.0001);
        rowCount++;
    }
    assertEquals(2, rowCount);
    assertTrue(bigquery.delete(DATASET, destinationTableName));
}

Example 2 with TableDataWriteChannel

use of com.google.cloud.bigquery.TableDataWriteChannel in project google-cloud-java by GoogleCloudPlatform.

the class BigQuerySnippets method writeToTable.

/**
   * Example of creating a channel with which to write to a table.
   */
// [TARGET writer(WriteChannelConfiguration)]
// [VARIABLE "my_dataset_name"]
// [VARIABLE "my_table_name"]
// [VARIABLE "StringValue1\nStringValue2\n"]
public long writeToTable(String datasetName, String tableName, String csvData) throws IOException, InterruptedException, TimeoutException {
    // [START writeToTable]
    TableId tableId = TableId.of(datasetName, tableName);
    WriteChannelConfiguration writeChannelConfiguration = WriteChannelConfiguration.newBuilder(tableId).setFormatOptions(FormatOptions.csv()).build();
    TableDataWriteChannel writer = bigquery.writer(writeChannelConfiguration);
    // Write data to writer
    try {
        writer.write(ByteBuffer.wrap(csvData.getBytes(Charsets.UTF_8)));
    } finally {
        writer.close();
    }
    // Get load job
    Job job = writer.getJob();
    job = job.waitFor();
    LoadStatistics stats = job.getStatistics();
    return stats.getOutputRows();
// [END writeToTable]
}

Example 3 with TableDataWriteChannel

use of com.google.cloud.bigquery.TableDataWriteChannel in project google-cloud-java by GoogleCloudPlatform.

the class BigQuerySnippets method writeFileToTable.

/**
   * Example of writing a local file to a table.
   */
// [TARGET writer(WriteChannelConfiguration)]
// [VARIABLE "my_dataset_name"]
// [VARIABLE "my_table_name"]
// [VARIABLE FileSystems.getDefault().getPath(".", "my-data.csv")]
public long writeFileToTable(String datasetName, String tableName, Path csvPath) throws IOException, InterruptedException, TimeoutException {
    // [START writeFileToTable]
    TableId tableId = TableId.of(datasetName, tableName);
    WriteChannelConfiguration writeChannelConfiguration = WriteChannelConfiguration.newBuilder(tableId).setFormatOptions(FormatOptions.csv()).build();
    TableDataWriteChannel writer = bigquery.writer(writeChannelConfiguration);
    // Write data to writer
    try (OutputStream stream = Channels.newOutputStream(writer)) {
        Files.copy(csvPath, stream);
    }
    // Get load job
    Job job = writer.getJob();
    job = job.waitFor();
    LoadStatistics stats = job.getStatistics();
    return stats.getOutputRows();
// [END writeFileToTable]
}