Examples with OutputSerialization com.amazonaws.services.s3.model.OutputSerialization used on opensource projects

Example 1 with OutputSerialization

use of com.amazonaws.services.s3.model.OutputSerialization in project presto by prestodb.

the class S3SelectCsvRecordReader method buildSelectObjectRequest.

@Override
public SelectObjectContentRequest buildSelectObjectRequest(Properties schema, String query, Path path) {
    SelectObjectContentRequest selectObjectRequest = new SelectObjectContentRequest();
    URI uri = path.toUri();
    selectObjectRequest.setBucketName(PrestoS3FileSystem.getBucketName(uri));
    selectObjectRequest.setKey(PrestoS3FileSystem.keyFromPath(path));
    selectObjectRequest.setExpression(query);
    selectObjectRequest.setExpressionType(ExpressionType.SQL);
    String fieldDelimiter = getFieldDelimiter(schema);
    String quoteChar = schema.getProperty(QUOTE_CHAR, null);
    String escapeChar = schema.getProperty(ESCAPE_CHAR, null);
    CSVInput selectObjectCSVInputSerialization = new CSVInput();
    selectObjectCSVInputSerialization.setRecordDelimiter(lineDelimiter);
    selectObjectCSVInputSerialization.setFieldDelimiter(fieldDelimiter);
    selectObjectCSVInputSerialization.setComments(COMMENTS_CHAR_STR);
    selectObjectCSVInputSerialization.setQuoteCharacter(quoteChar);
    selectObjectCSVInputSerialization.setQuoteEscapeCharacter(escapeChar);
    InputSerialization selectObjectInputSerialization = new InputSerialization();
    CompressionCodec codec = compressionCodecFactory.getCodec(path);
    if (codec instanceof GzipCodec) {
        selectObjectInputSerialization.setCompressionType(CompressionType.GZIP);
    } else if (codec instanceof BZip2Codec) {
        selectObjectInputSerialization.setCompressionType(CompressionType.BZIP2);
    } else if (codec != null) {
        throw new PrestoException(NOT_SUPPORTED, "Compression extension not supported for S3 Select: " + path);
    }
    selectObjectInputSerialization.setCsv(selectObjectCSVInputSerialization);
    selectObjectRequest.setInputSerialization(selectObjectInputSerialization);
    OutputSerialization selectObjectOutputSerialization = new OutputSerialization();
    CSVOutput selectObjectCSVOutputSerialization = new CSVOutput();
    selectObjectCSVOutputSerialization.setRecordDelimiter(lineDelimiter);
    selectObjectCSVOutputSerialization.setFieldDelimiter(fieldDelimiter);
    selectObjectCSVOutputSerialization.setQuoteCharacter(quoteChar);
    selectObjectCSVOutputSerialization.setQuoteEscapeCharacter(escapeChar);
    selectObjectOutputSerialization.setCsv(selectObjectCSVOutputSerialization);
    selectObjectRequest.setOutputSerialization(selectObjectOutputSerialization);
    return selectObjectRequest;
}