Examples with GenericRecordBuilder org.apache.avro.generic.GenericRecordBuilder used on opensource projects

Example 11 with GenericRecordBuilder

use of org.apache.avro.generic.GenericRecordBuilder in project cdk-examples by cloudera.

the class CreateUserDatasetGeneric method run.

@Override
public int run(String[] args) throws Exception {
    // Construct a filesystem dataset repository rooted at /tmp/data
    DatasetRepository repo = DatasetRepositories.open("repo:hdfs:/tmp/data");
    // Create a dataset of users with the Avro schema in the repository
    DatasetDescriptor descriptor = new DatasetDescriptor.Builder().schemaUri("resource:user.avsc").build();
    Dataset<GenericRecord> users = repo.create("users", descriptor);
    // Get a writer for the dataset and write some users to it
    DatasetWriter<GenericRecord> writer = users.newWriter();
    try {
        writer.open();
        String[] colors = { "green", "blue", "pink", "brown", "yellow" };
        Random rand = new Random();
        GenericRecordBuilder builder = new GenericRecordBuilder(descriptor.getSchema());
        for (int i = 0; i < 100; i++) {
            GenericRecord record = builder.set("username", "user-" + i).set("creationDate", System.currentTimeMillis()).set("favoriteColor", colors[rand.nextInt(colors.length)]).build();
            writer.write(record);
        }
    } finally {
        writer.close();
    }
    return 0;
}

Example 12 with GenericRecordBuilder

use of org.apache.avro.generic.GenericRecordBuilder in project cdk-examples by cloudera.

the class CreateUserDatasetGenericParquet method run.

@Override
public int run(String[] args) throws Exception {
    // Construct a filesystem dataset repository rooted at /tmp/data
    DatasetRepository repo = DatasetRepositories.open("repo:hdfs:/tmp/data");
    // Create a dataset of users with the Avro schema, and Parquet format in the
    // repository
    DatasetDescriptor descriptor = new DatasetDescriptor.Builder().schemaUri("resource:user.avsc").format(Formats.PARQUET).build();
    Dataset<GenericRecord> users = repo.create("users", descriptor);
    // Get a writer for the dataset and write some users to it
    DatasetWriter<GenericRecord> writer = users.newWriter();
    try {
        writer.open();
        String[] colors = { "green", "blue", "pink", "brown", "yellow" };
        Random rand = new Random();
        GenericRecordBuilder builder = new GenericRecordBuilder(descriptor.getSchema());
        for (int i = 0; i < 100; i++) {
            GenericRecord record = builder.set("username", "user-" + i).set("creationDate", System.currentTimeMillis()).set("favoriteColor", colors[rand.nextInt(colors.length)]).build();
            writer.write(record);
        }
    } finally {
        writer.close();
    }
    return 0;
}

Example 13 with GenericRecordBuilder

use of org.apache.avro.generic.GenericRecordBuilder in project cdk-examples by cloudera.

the class CreateUserDatasetGenericPartitioned method run.

@Override
public int run(String[] args) throws Exception {
    // Construct a filesystem dataset repository rooted at /tmp/data
    DatasetRepository repo = DatasetRepositories.open("repo:hdfs:/tmp/data");
    // Create a partition strategy that hash partitions on username with 10 buckets
    PartitionStrategy partitionStrategy = new PartitionStrategy.Builder().hash("username", 10).build();
    // Create a dataset of users with the Avro schema in the repository
    DatasetDescriptor descriptor = new DatasetDescriptor.Builder().schemaUri("resource:user.avsc").partitionStrategy(partitionStrategy).build();
    Dataset<GenericRecord> users = repo.create("users", descriptor);
    // Get a writer for the dataset and write some users to it
    DatasetWriter<GenericRecord> writer = users.newWriter();
    try {
        writer.open();
        String[] colors = { "green", "blue", "pink", "brown", "yellow" };
        Random rand = new Random();
        GenericRecordBuilder builder = new GenericRecordBuilder(descriptor.getSchema());
        for (int i = 0; i < 100; i++) {
            GenericRecord record = builder.set("username", "user-" + i).set("creationDate", System.currentTimeMillis()).set("favoriteColor", colors[rand.nextInt(colors.length)]).build();
            writer.write(record);
        }
    } finally {
        writer.close();
    }
    return 0;
}

Example 14 with GenericRecordBuilder

use of org.apache.avro.generic.GenericRecordBuilder in project cdap by caskdata.

the class AvroRecordFormatTest method testMultipleReads.

@Test
public void testMultipleReads() throws Exception {
    Schema schema = Schema.recordOf("record", Schema.Field.of("x", Schema.of(Schema.Type.INT)));
    FormatSpecification formatSpecification = new FormatSpecification(Formats.AVRO, schema, Collections.<String, String>emptyMap());
    org.apache.avro.Schema avroSchema = convertSchema(schema);
    RecordFormat<StreamEvent, StructuredRecord> format = RecordFormats.createInitializedFormat(formatSpecification);
    GenericRecord record = new GenericRecordBuilder(avroSchema).set("x", 5).build();
    StructuredRecord actual = format.read(toStreamEvent(record));
    Assert.assertEquals(5, actual.get("x"));
    record = new GenericRecordBuilder(avroSchema).set("x", 10).build();
    actual = format.read(toStreamEvent(record));
    Assert.assertEquals(10, actual.get("x"));
}

Example 15 with GenericRecordBuilder

use of org.apache.avro.generic.GenericRecordBuilder in project cdap by caskdata.

the class AvroRecordFormatTest method testSchemaProjection.

@Test
public void testSchemaProjection() throws Exception {
    Schema sourceSchema = Schema.recordOf("source", Schema.Field.of("id", Schema.of(Schema.Type.INT)), Schema.Field.of("name", Schema.nullableOf(Schema.of(Schema.Type.STRING))));
    Schema readSchema = Schema.recordOf("read", Schema.Field.of("name", Schema.of(Schema.Type.STRING)));
    GenericRecord record = new GenericRecordBuilder(convertSchema(sourceSchema)).set("id", 1).set("name", "value").build();
    FormatSpecification formatSpecification = new FormatSpecification(Formats.AVRO, readSchema, ImmutableMap.<String, String>of());
    RecordFormat<StreamEvent, StructuredRecord> format = RecordFormats.createInitializedFormat(formatSpecification);
    // Convert an event that has schema associated
    StructuredRecord projectedRecord = format.read(toStreamEvent(record, true));
    Assert.assertEquals(record.get("name").toString(), projectedRecord.get("name").toString());
    // Convert an event that has no schema associated. The record must be written with the read schema.
    record = new GenericRecordBuilder(convertSchema(readSchema)).set("name", "value2").build();
    projectedRecord = format.read(toStreamEvent(record));
    Assert.assertEquals(record.get("name").toString(), projectedRecord.get("name").toString());
}