Example usage for com.amazonaws.services.s3.model CSVInput setQuoteCharacter

Introduction

In this page you can find the example usage for com.amazonaws.services.s3.model CSVInput setQuoteCharacter.

Prototype

public void setQuoteCharacter(Character quoteCharacter) 

Source Link

Document

Sets the value used for escaping where the field delimiter is part of the value.

Usage

From source file:com.facebook.presto.hive.S3SelectCsvRecordReader.java

License:Apache License

@Override
public SelectObjectContentRequest buildSelectObjectRequest(Properties schema, String query, Path path) {
    SelectObjectContentRequest selectObjectRequest = new SelectObjectContentRequest();
    URI uri = path.toUri();/*w  w  w .  ja  v a  2 s  . co m*/
    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;
}

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