Java Code Examples for org.apache.avro.Schema.Field#doc()

The following examples show how to use org.apache.avro.Schema.Field#doc() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: MarketoSourceOrSink.java    From components with Apache License 2.0 5 votes vote down vote up 
public static List<Field> getSchemaFieldsList(Schema schema) {
    List<Field> result = new ArrayList<>();
    for (Field f : schema.getFields()) {
        Field nf = new Field(f.name(), f.schema(), f.doc(), f.defaultVal());
        nf.getObjectProps().putAll(f.getObjectProps());
        for (Map.Entry<String, Object> entry : f.getObjectProps().entrySet()) {
            nf.addProp(entry.getKey(), entry.getValue());
        }
        result.add(nf);
    }
    return result;
}
Example 2
Source File: MarketoUtils.java    From components with Apache License 2.0 5 votes vote down vote up 
public static Field generateNewField(Field origin) {
    Schema.Field field = new Schema.Field(origin.name(), origin.schema(), origin.doc(), origin.defaultVal(), origin.order());
    field.getObjectProps().putAll(origin.getObjectProps());
    for (Map.Entry<String, Object> entry : origin.getObjectProps().entrySet()) {
        field.addProp(entry.getKey(), entry.getValue());
    }
    return field;
}
Example 3
Source File: TMarketoInputProperties.java    From components with Apache License 2.0 5 votes vote down vote up 
private Field getMigratedField(Field origin, Schema expectedSchema, String expectedDIType) {
    Field expectedField = new Schema.Field(origin.name(), expectedSchema, origin.doc(), origin.defaultVal(), origin.order());
    for (Map.Entry<String, Object> entry : origin.getObjectProps().entrySet()) {
        if ("di.column.talendType".equals(entry.getKey())) {
            expectedField.addProp("di.column.talendType", expectedDIType);
        } else {
            expectedField.addProp(entry.getKey(), entry.getValue());
        }
    }
    return expectedField;
}
Example 4
Source File: AvroUtils.java    From Cubert with Apache License 2.0 5 votes vote down vote up 
public static Schema getSchema(SeekableInput input) throws IOException
{
    DatumReader<GenericRecord> datumReader = new GenericDatumReader<GenericRecord>();
    DataFileReader<GenericRecord> dataFileReader =
            new DataFileReader<GenericRecord>(input, datumReader);
    Schema schema = dataFileReader.getSchema();

    if (PadDefaultNullsToSchema)
    {
        // a list of "cloned" fields, with optional default value set to null
        ArrayList<Field> paddedFields = new ArrayList<Field>();

        for (Field field: schema.getFields())
        {
            // should this field be padded?
            boolean needsNullPadding = (field.schema() != null) // the field has nested schema
                && (field.schema().getType().equals(Type.UNION)) // the nested schema is UNION
                && (field.schema().getTypes().get(0).getType().equals(Type.NULL)); // the first element of union is NULL type

            JsonNode defValue = needsNullPadding ? NullNode.getInstance() : field.defaultValue();

            Field f = new Field(field.name(), field.schema(), field.doc(), defValue);
            paddedFields.add(f);
        }

        schema = Schema.createRecord(schema.getName(), schema.getDoc(), schema.getNamespace(), schema.isError());
        schema.setFields(paddedFields);
    }

    return schema;
}
Example 5
Source File: MRCompactorAvroKeyDedupJobRunner.java    From incubator-gobblin with Apache License 2.0 5 votes vote down vote up 
public static Optional<Schema> getKeySchema(Field field) {
  switch (field.schema().getType()) {
    case RECORD:
      return getKeySchemaFromRecord(field.schema());
    default:
      if (field.doc() != null && field.doc().toLowerCase().endsWith(SCHEMA_DEDUP_FIELD_ANNOTATOR)) {
        return Optional.of(field.schema());
      } else {
        return Optional.absent();
      }
  }
}
Example 6
Source File: EnvelopePayloadConverter.java    From incubator-gobblin with Apache License 2.0 5 votes vote down vote up 
/**
 * Convert to the output schema of a field
 */
protected Field convertFieldSchema(Schema inputSchema, Field field, WorkUnitState workUnit)
    throws SchemaConversionException {
  if (field.name().equals(payloadField)) {
    // Create a payload field with latest schema
    return createLatestPayloadField(field);
  }
  // Make a copy of the field to the output schema
  return new Field(field.name(), field.schema(), field.doc(), field.defaultValue(), field.order());
}
Example 7
Source File: PigSchema2Avro.java    From spork with Apache License 2.0 5 votes vote down vote up 
/**
 * Validate a Pig tuple is compatible with Avro record. If the Avro schema 
 * is not complete (with uncovered fields), then convert those fields using 
 * methods in set 1. 
 * 
 * Notice that users can get rid of Pig tuple wrappers, e.g. an Avro schema
 * "int" is compatible with a Pig schema "T:(int)"
 * 
 */
protected static Schema validateAndConvertRecord(Schema avroSchema, ResourceFieldSchema[] pigFields) throws IOException {

    /* Get rid of Pig tuple wrappers. */
    if (!avroSchema.getType().equals(Schema.Type.RECORD)) {
        if (pigFields.length != 1)
            throw new IOException("Expect only one field in Pig tuple schema. Avro schema is " + avroSchema.getType());

        return validateAndConvert(avroSchema, pigFields[0]);
    }

    /* validate and convert a pig tuple with avro record */
    boolean isPartialSchema = AvroStorageUtils.isUDPartialRecordSchema(avroSchema);
    AvroStorageLog.details("isPartialSchema=" + isPartialSchema);

    String typeName = isPartialSchema ? getRecordName() : avroSchema.getName();
    Schema outSchema = Schema.createRecord(typeName, avroSchema.getDoc(), avroSchema.getNamespace(), false);

    List<Schema.Field> inFields = avroSchema.getFields();
    if (!isPartialSchema && inFields.size() != pigFields.length) {
        throw new IOException("Expect " + inFields.size() + " fields in pig schema." + " But there are " + pigFields.length);
    }

    List<Schema.Field> outFields = new ArrayList<Schema.Field>();

    for (int i = 0; i < pigFields.length; i++) {
        /* get user defined avro field schema */
        Field inputField = isPartialSchema ? AvroStorageUtils.getUDField(avroSchema, i) : inFields.get(i);

        /* get schema */
        Schema fieldSchema = null;
        if (inputField == null) { 
            /* convert pig schema (nullable) */
            fieldSchema = convert(pigFields[i], true);
        } else if (inputField.schema() == null) { 
            /* convert pig schema (not-null) */
            fieldSchema = convert(pigFields[i], false);
        } else { 
            /* validate pigFields[i] with given avro schema */
            fieldSchema = validateAndConvert(inputField.schema(),
                                            pigFields[i]);
        }

        /* get field name of output */
        String outname = (isPartialSchema) ? pigFields[i].getName() : inputField.name();
        if (outname == null)
            outname = FIELD_NAME + "_" + i; // field name cannot be null

        /* get doc of output */
        String doc = (isPartialSchema) ? pigFields[i].getDescription() : inputField.doc();

        JsonNode defaultvalue = (inputField != null) ? inputField.defaultValue() : null;

        outFields.add(new Field(outname, fieldSchema, doc, defaultvalue));

    }

    outSchema.setFields(outFields);
    return outSchema;

}
Example 8
Source File: PigSchema2Avro.java    From Cubert with Apache License 2.0 4 votes vote down vote up 
/**
 * Validate a Pig tuple is compatible with Avro record. If the Avro schema 
 * is not complete (with uncovered fields), then convert those fields using 
 * methods in set 1. 
 * 
 * Notice that users can get rid of Pig tuple wrappers, e.g. an Avro schema
 * "int" is compatible with a Pig schema "T:(int)"
 * 
 */
protected static Schema validateAndConvertRecord(Schema avroSchema, ResourceFieldSchema[] pigFields) throws IOException {

    /* Get rid of Pig tuple wrappers. */
    if (!avroSchema.getType().equals(Schema.Type.RECORD)) {
        if (pigFields.length != 1)
            throw new IOException("Expect only one field in Pig tuple schema. Avro schema is " + avroSchema.getType());

        return validateAndConvert(avroSchema, pigFields[0]);
    }

    /* validate and convert a pig tuple with avro record */
    boolean isPartialSchema = AvroStorageUtils.isUDPartialRecordSchema(avroSchema);
    AvroStorageLog.details("isPartialSchema=" + isPartialSchema);

    String typeName = isPartialSchema ? getRecordName() : avroSchema.getName();
    Schema outSchema = Schema.createRecord(typeName, avroSchema.getDoc(), avroSchema.getNamespace(), false);

    List<Schema.Field> inFields = avroSchema.getFields();
    if (!isPartialSchema && inFields.size() != pigFields.length) {
        throw new IOException("Expect " + inFields.size() + " fields in pig schema." + " But there are " + pigFields.length);
    }

    List<Schema.Field> outFields = new ArrayList<Schema.Field>();

    for (int i = 0; i < pigFields.length; i++) {
        /* get user defined avro field schema */
        Field inputField = isPartialSchema ? AvroStorageUtils.getUDField(avroSchema, i) : inFields.get(i);

        /* get schema */
        Schema fieldSchema = null;
        if (inputField == null) { 
            /* convert pig schema (nullable) */
            fieldSchema = convert(pigFields[i], true);
        } else if (inputField.schema() == null) { 
            /* convert pig schema (not-null) */
            fieldSchema = convert(pigFields[i], false);
        } else { 
            /* validate pigFields[i] with given avro schema */
            fieldSchema = validateAndConvert(inputField.schema(),
                                            pigFields[i]);
        }

        /* get field name of output */
        String outname = (isPartialSchema) ? pigFields[i].getName() : inputField.name();
        if (outname == null)
            outname = FIELD_NAME + "_" + i; // field name cannot be null

        /* get doc of output */
        String doc = (isPartialSchema) ? pigFields[i].getDescription() : inputField.doc();

        JsonNode defaultvalue = (inputField != null) ? inputField.defaultValue() : null;

        outFields.add(new Field(outname, fieldSchema, doc, defaultvalue));

    }

    outSchema.setFields(outFields);
    return outSchema;

}
Example 9
Source File: AvroUtils.java    From kite with Apache License 2.0 2 votes vote down vote up 
/**
 * Given an avro Schema.Field instance, make a clone of it.
 * 
 * @param field
 *          The field to clone.
 * @return The cloned field.
 */
public static Field cloneField(Field field) {
  return new Field(field.name(), field.schema(), field.doc(),
      field.defaultValue());
}