ReaderExpressionHelper (Cloud Bigtable HBase Client for Java 1.12.0 API)

com.google.cloud.bigtable.hbase.adapters.read

Class ReaderExpressionHelper

• java.lang.Object
• • com.google.cloud.bigtable.hbase.adapters.read.ReaderExpressionHelper

• ---

  
  

  public class ReaderExpressionHelper
  extends Object

  Methods and constants to help build a bigtable reader expression // TODO(AngusDavis): Move more ScanAdapter and FilterAdapter writing logic to here.

  Version:

  $Id: $Id

  Author:

  sduskis

• • Nested Class Summary

    Nested Classes 

    Modifier and Type	Class and Description
    static class	ReaderExpressionHelper.QuoteFilterExpressionStream An OutputStream that performs bigtable reader filter expression language quoting of '@', '{', and '}' by pre-pending a '@' to each.
    static class	ReaderExpressionHelper.QuoteMetaOutputStream An OutputStream that performs RE2:QuoteMeta as bytes are written.

  • Field Summary

    Fields 

    Modifier and Type	Field and Description
    static byte[]	ALL_BYTE_BYTES Constant ANY_BYTE_BYTES=Bytes.toBytes(ANY_BYTE)
    static String	ALL_BYTES Constant ALL_BYTES="\\C*"
    static byte[]	ALL_QUALIFIERS_BYTES Constant ALL_QUALIFIERS_BYTES=Bytes.toBytes(ALL_QUALIFIERS)
    static String	ANY_BYTE Constant ANY_BYTE="\\C"
    static byte[]	ANY_BYTE_BYTES Constant ANY_BYTE_BYTES=Bytes.toBytes(ANY_BYTE)
    static String	ANY_BYTES Constant ANY_BYTES="\\C+"

  • Constructor Summary

    Constructors 

    Constructor and Description
    ReaderExpressionHelper()

  • Method Summary

    All Methods Static Methods Concrete Methods 

    Modifier and Type	Method and Description
    static ByteString	quoteRegularExpression(byte[] unquoted) quoteRegularExpression.
    static void	writeQuotedExpression(OutputStream outputStream, byte[] unquoted) Write unquoted to the OutputStream applying both RE2:QuoteMeta and Bigtable reader expression quoting.
    static void	writeQuotedRegularExpression(OutputStream outputStream, byte[] unquoted) Write unquoted to the OutputStream applying RE2:QuoteMeta quoting.

    • Methods inherited from class java.lang.Object

      clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• • Field Detail

    • ANY_BYTE

      public static final String ANY_BYTE

      Constant ANY_BYTE="\\C"

      See Also:

      Constant Field Values

    • ANY_BYTES

      public static final String ANY_BYTES

      Constant ANY_BYTES="\\C+"

      See Also:

      Constant Field Values

    • ALL_BYTES

      public static final String ALL_BYTES

      Constant ALL_BYTES="\\C*"

      See Also:

      Constant Field Values

    • ANY_BYTE_BYTES

      public static final byte[] ANY_BYTE_BYTES

      Constant ANY_BYTE_BYTES=Bytes.toBytes(ANY_BYTE)

    • ALL_BYTE_BYTES

      public static final byte[] ALL_BYTE_BYTES

      Constant ANY_BYTE_BYTES=Bytes.toBytes(ANY_BYTE)

    • ALL_QUALIFIERS_BYTES

      public static final byte[] ALL_QUALIFIERS_BYTES

      Constant ALL_QUALIFIERS_BYTES=Bytes.toBytes(ALL_QUALIFIERS)

  • Constructor Detail

    • ReaderExpressionHelper

      public ReaderExpressionHelper()

  • Method Detail

    • writeQuotedExpression

      public static void writeQuotedExpression(OutputStream outputStream,
                                               byte[] unquoted)
                                        throws IOException

      Write unquoted to the OutputStream applying both RE2:QuoteMeta and Bigtable reader expression quoting.

      Parameters:

      outputStream - A stream to write quoted output to

      unquoted - A byte-array, possibly containing bytes outside of the ASCII

      Throws:

      IOException - if any.

    • quoteRegularExpression

      public static ByteString quoteRegularExpression(byte[] unquoted)
                                               throws IOException

      quoteRegularExpression.

      Parameters:

      unquoted - an array of byte.

      Returns:

      an array of byte.

      Throws:

      IOException - if any.

    • writeQuotedRegularExpression

      public static void writeQuotedRegularExpression(OutputStream outputStream,
                                                      byte[] unquoted)
                                               throws IOException

      Write unquoted to the OutputStream applying RE2:QuoteMeta quoting.

      Parameters:

      outputStream - a OutputStream object.

      unquoted - an array of byte.

      Throws:

      IOException - if any.