com.ibm.mq.data

Class MQDataInputStream

  • java.lang.Object
    • java.io.InputStream
      • java.io.FilterInputStream
        • com.ibm.mq.data.MQDataInputStream
  • All Implemented Interfaces:
    MQDataInput, java.io.Closeable


    public class MQDataInputStream
    extends java.io.FilterInputStream
    implements MQDataInput
    Provides an InputStream implementation of MQDataInput. To use, wrap a source InputStream in the MQDataInputStream. Subsequent direct access to the source InputStream should be discouraged, as it will result in undefined behaviour from the MQDataInputStream.
    • Field Summary

      Fields 
      Modifier and Type Field and Description
      static java.lang.String COPYRIGHT 
      • Fields inherited from class java.io.FilterInputStream

        in
    • Constructor Summary

      Constructors 
      Constructor and Description
      MQDataInputStream(java.io.InputStream in) 
    • Method Summary

      Methods 
      Modifier and Type Method and Description
      int getCCSID()
      Returns the Coded Character Set Identifier currently used for character read operations
      int getDataOffset()
      Returns the current offset of the cursor, relative to the position where this MQDataOutput object was originally created.
      DecimalEncoding getDecimalEncoding()
      Returns the DecimalEncoding currently used for packed-decimal read operations.
      int getEncoding()
      Return the WMQ encoding identifier representing the three encodings (integer, floating-point and packed-decimal) currently used for numeric read operations.
      FloatEncoding getFloatEncoding()
      Returns the FloatEncoding currently used for floating-point read operations.
      IntegerEncoding getIntegerEncoding()
      Returns the IntegerEncoding currently used for integer read operations.
      void mark(int readLimit) 
      int read() 
      int read(byte[] b) 
      int read(byte[] b, int off, int len) 
      byte readByte()
      Reads a single (signed) byte.
      byte[] readBytes(int length)
      Reads a number of (signed) bytes from the stream, returning them as an array.
      java.math.BigInteger readDecimal(int length)
      Reads a number of bytes as a packed-decimal integer.
      short readDecimal2()
      Reads two bytes as a packed-decimal integer.
      int readDecimal4()
      Reads four bytes as a packed-decimal integer.
      long readDecimal8()
      Reads eight bytes as a packed-decimal integer.
      double readDouble()
      Reads eight bytes as a floating-point number, interpreted according to the current floating-point encoding.
      float readFloat()
      Reads four bytes as a floating-point number, interpreted according to the current floating-point encoding.
      void readFully(byte[] b)
      Reads bytes into the parameter byte array.
      void readFully(byte[] b, int off, int len)
      Reads some number of bytes into a bytearray beginning from a given offset into the byte array.
      int readInt()
      Reads four bytes as a signed integer.
      long readLong()
      Reads eight bytes as a signed long integer.
      byte readMQBYTE()
      Reads a single (signed) byte.
      byte[] readMQBYTE(int length)
      Reads a number of (signed) bytes from the stream, returning them as an array.
      byte[] readMQBYTE16()
      Reads 16 bytes from the stream, returning them as an array.
      byte[] readMQBYTE24()
      Reads 24 bytes from the stream, returning them as an array.
      byte[] readMQBYTE32()
      Reads 32 bytes from the stream, returning them as an array.
      byte[] readMQBYTE8()
      Reads 8 bytes from the stream, returning them as an array.
      char readMQCHAR()
      Reads a single byte from the stream and converts it to a character, using the current CCSID.
      java.lang.String readMQCHAR(int length)
      Reads a number of bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR12()
      Reads 12 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR128()
      Reads 128 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR16()
      Reads 16 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR20()
      Reads 20 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR24()
      Reads 24 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR256()
      Reads 256 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR28()
      Reads 28 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR32()
      Reads 32 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR4()
      Reads 4 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR48()
      Reads 48 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR64()
      Reads 64 bytes from the stream and converts them into a String, using the current CCSID.
      java.lang.String readMQCHAR8()
      Reads 8 bytes from the stream and converts them into a String, using the current CCSID.
      int readMQINT32()
      Reads four bytes as a signed integer.
      long readMQINT64()
      Reads eight bytes as a signed long integer.
      int readMQLONG()
      Reads four bytes as a signed integer.
      short readMQSHORT()
      Reads two bytes as a signed short.
      long readMQUINT32()
      Reads four bytes as an unsigned integer.
      java.math.BigInteger readMQUINT64()
      Reads eight bytes as an unsigned integer.
      long readMQULONG()
      Reads four bytes as an unsigned integer.
      int readMQUSHORT()
      Reads two bytes as an unsigned integer.
      java.lang.Object readObject()
      Reads a serialized Java Object from the stream
      short readShort()
      Reads two bytes as a signed short.
      char readUCS2Char()
      Reads two bytes from the stream and interprets it as a Unicode character.
      java.lang.String readUTF()
      Reads a UTF-8 encoded string from the stream.
      void reset() 
      void setCCSID(int ccsid)
      Sets the Coded Character Set Identifier to be used for subsequent character read operations.
      void setDecimalEncoding(DecimalEncoding de)
      Sets the DecimalEncoding to be used for subsequent packed-decimal read operations.
      void setEncoding(int encoding)
      Sets all three encoding values - integer, floating-point and packed-decimal, using the WMQ encoding identifier.
      void setFloatEncoding(FloatEncoding fe)
      Sets the FloatEncoding to be used for subsequent floating-point read operations.
      void setIntegerEncoding(IntegerEncoding ie)
      Sets the IntegerEncoding to be uesd for subsequence integer read operations.
      long skip(long n) 
      int skipBytes(int n)
      Attempts to skip over a number of bytes, returning the number of bytes actually skipped.
      • Methods inherited from class java.io.FilterInputStream

        available, close, markSupported
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • MQDataInputStream

        public MQDataInputStream(java.io.InputStream in)
    • Method Detail

      • setCCSID

        public void setCCSID(int ccsid)
                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Sets the Coded Character Set Identifier to be used for subsequent character read operations.
        Specified by:
        setCCSID in interface MQDataInput
        Parameters:
        ccsid - new CCSID value
        Throws:
        java.io.IOException
      • getCCSID

        public int getCCSID()
                     throws java.io.IOException
        Description copied from interface: MQDataInput
        Returns the Coded Character Set Identifier currently used for character read operations
        Specified by:
        getCCSID in interface MQDataInput
        Returns:
        current CCSID value
        Throws:
        java.io.IOException
      • setIntegerEncoding

        public void setIntegerEncoding(IntegerEncoding ie)
                                throws java.io.IOException
        Description copied from interface: MQDataInput
        Sets the IntegerEncoding to be uesd for subsequence integer read operations. IntegerEncoding.UNDEFINED is treated as IntegerEncoding.NORMAL.
        Specified by:
        setIntegerEncoding in interface MQDataInput
        Parameters:
        ie - new integer encoding value
        Throws:
        java.io.IOException
        See Also:
        IntegerEncoding
      • getIntegerEncoding

        public IntegerEncoding getIntegerEncoding()
                                           throws java.io.IOException
        Description copied from interface: MQDataInput
        Returns the IntegerEncoding currently used for integer read operations.
        Specified by:
        getIntegerEncoding in interface MQDataInput
        Returns:
        current integer encoding
        Throws:
        java.io.IOException
        See Also:
        IntegerEncoding
      • setFloatEncoding

        public void setFloatEncoding(FloatEncoding fe)
                              throws java.io.IOException
        Description copied from interface: MQDataInput
        Sets the FloatEncoding to be used for subsequent floating-point read operations. FloatEncoding.UNDEFINED is treated as FloatEncoding.IEEE_NORMAL.
        Specified by:
        setFloatEncoding in interface MQDataInput
        Parameters:
        fe - new floating-point encoding value
        Throws:
        java.io.IOException
        See Also:
        FloatEncoding
      • getFloatEncoding

        public FloatEncoding getFloatEncoding()
                                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Returns the FloatEncoding currently used for floating-point read operations.
        Specified by:
        getFloatEncoding in interface MQDataInput
        Returns:
        current floating-point encoding
        Throws:
        java.io.IOException
        See Also:
        FloatEncoding
      • setDecimalEncoding

        public void setDecimalEncoding(DecimalEncoding de)
                                throws java.io.IOException
        Description copied from interface: MQDataInput
        Sets the DecimalEncoding to be used for subsequent packed-decimal read operations. DecimalEncoding.UNDEFINED is treated as DecimalEncoding.NORMAL
        Specified by:
        setDecimalEncoding in interface MQDataInput
        Parameters:
        de - new packed-decimal encoding value
        Throws:
        java.io.IOException
        See Also:
        DecimalEncoding
      • getDecimalEncoding

        public DecimalEncoding getDecimalEncoding()
                                           throws java.io.IOException
        Description copied from interface: MQDataInput
        Returns the DecimalEncoding currently used for packed-decimal read operations.
        Specified by:
        getDecimalEncoding in interface MQDataInput
        Returns:
        current packed-decimal encoding
        Throws:
        java.io.IOException
        See Also:
        DecimalEncoding
      • setEncoding

        public void setEncoding(int encoding)
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Sets all three encoding values - integer, floating-point and packed-decimal, using the WMQ encoding identifier. These will be used for subsequent numeric read operations.
        Specified by:
        setEncoding in interface MQDataInput
        Parameters:
        encoding - integer representation of the new encoding
        Throws:
        java.io.IOException
      • getEncoding

        public int getEncoding()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Return the WMQ encoding identifier representing the three encodings (integer, floating-point and packed-decimal) currently used for numeric read operations.
        Specified by:
        getEncoding in interface MQDataInput
        Returns:
        integer representation of the current encoding
        Throws:
        java.io.IOException
      • mark

        public void mark(int readLimit)
        Overrides:
        mark in class java.io.FilterInputStream
      • reset

        public void reset()
                   throws java.io.IOException
        Overrides:
        reset in class java.io.FilterInputStream
        Throws:
        java.io.IOException
      • getDataOffset

        public int getDataOffset()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Returns the current offset of the cursor, relative to the position where this MQDataOutput object was originally created. Behaviour is undefined if the underlying data source has been manipulated without going through this MQDataOutput object.
        Specified by:
        getDataOffset in interface MQDataInput
        Returns:
        number of bytes read or skipped
        Throws:
        java.io.IOException
      • skip

        public long skip(long n)
                  throws java.io.IOException
        Overrides:
        skip in class java.io.FilterInputStream
        Throws:
        java.io.IOException
      • skipBytes

        public int skipBytes(int n)
                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Attempts to skip over a number of bytes, returning the number of bytes actually skipped.
        Specified by:
        skipBytes in interface MQDataInput
        Parameters:
        n - number of bytes to attempt to skip
        Returns:
        number of bytes actually skipped; 0 if at the end of the stream.
        Throws:
        java.io.IOException
        See Also:
        DataInput.skipBytes(int)
      • read

        public int read()
                 throws java.io.IOException
        Overrides:
        read in class java.io.FilterInputStream
        Throws:
        java.io.IOException
      • read

        public int read(byte[] b)
                 throws java.io.IOException
        Overrides:
        read in class java.io.FilterInputStream
        Throws:
        java.io.IOException
      • read

        public int read(byte[] b,
               int off,
               int len)
                 throws java.io.IOException
        Overrides:
        read in class java.io.FilterInputStream
        Throws:
        java.io.IOException
      • readByte

        public byte readByte()
                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a single (signed) byte.
        Specified by:
        readByte in interface MQDataInput
        Returns:
        byte read from stream
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readBytes

        public byte[] readBytes(int length)
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a number of (signed) bytes from the stream, returning them as an array.
        Specified by:
        readBytes in interface MQDataInput
        Parameters:
        length - number of bytes to read
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE

        public byte readMQBYTE()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a single (signed) byte.
        Specified by:
        readMQBYTE in interface MQDataInput
        Returns:
        byte read from stream
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE

        public byte[] readMQBYTE(int length)
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a number of (signed) bytes from the stream, returning them as an array.
        Specified by:
        readMQBYTE in interface MQDataInput
        Parameters:
        length - number of bytes to read
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE8

        public byte[] readMQBYTE8()
                           throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 8 bytes from the stream, returning them as an array.
        Specified by:
        readMQBYTE8 in interface MQDataInput
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE16

        public byte[] readMQBYTE16()
                            throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 16 bytes from the stream, returning them as an array.
        Specified by:
        readMQBYTE16 in interface MQDataInput
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE24

        public byte[] readMQBYTE24()
                            throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 24 bytes from the stream, returning them as an array.
        Specified by:
        readMQBYTE24 in interface MQDataInput
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readMQBYTE32

        public byte[] readMQBYTE32()
                            throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 32 bytes from the stream, returning them as an array.
        Specified by:
        readMQBYTE32 in interface MQDataInput
        Returns:
        an array containing the read bytes
        Throws:
        java.io.EOFException - if at the end of the stream
        java.io.IOException
      • readFully

        public void readFully(byte[] b)
                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads bytes into the parameter byte array.
        Specified by:
        readFully in interface MQDataInput
        Parameters:
        b - byte array to read into
        Throws:
        java.io.EOFException - if the stream does not have enough data left to fill the byte array
        java.io.IOException
        See Also:
        DataInput.readFully(byte[])
      • readFully

        public void readFully(byte[] b,
                     int off,
                     int len)
                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads some number of bytes into a bytearray beginning from a given offset into the byte array.
        Specified by:
        readFully in interface MQDataInput
        Parameters:
        b - byte array to read into
        off - starting index in the byte array
        len - number of bytes to read
        Throws:
        java.io.EOFException - if the stream ends before len bytes have been read
        java.io.IOException
        See Also:
        DataInput.readFully(byte[], int, int)
      • readMQCHAR

        public char readMQCHAR()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a single byte from the stream and converts it to a character, using the current CCSID. Fails if the next byte in the stream does not completely represent a single character.
        Specified by:
        readMQCHAR in interface MQDataInput
        Returns:
        a byte from the stream as a character
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException - if the next byte does not completely represent a single character, or for unexpected errors.
      • readMQCHAR

        public java.lang.String readMQCHAR(int length)
                                    throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a number of bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR in interface MQDataInput
        Parameters:
        length - number of bytes to read
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR4

        public java.lang.String readMQCHAR4()
                                     throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 4 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR4 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR8

        public java.lang.String readMQCHAR8()
                                     throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 8 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR8 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR12

        public java.lang.String readMQCHAR12()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 12 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR12 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR16

        public java.lang.String readMQCHAR16()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 16 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR16 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR20

        public java.lang.String readMQCHAR20()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 20 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR20 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR24

        public java.lang.String readMQCHAR24()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 24 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR24 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR28

        public java.lang.String readMQCHAR28()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 28 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR28 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR32

        public java.lang.String readMQCHAR32()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 32 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR32 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR48

        public java.lang.String readMQCHAR48()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 48 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR48 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR64

        public java.lang.String readMQCHAR64()
                                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 64 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR64 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR128

        public java.lang.String readMQCHAR128()
                                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 128 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR128 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQCHAR256

        public java.lang.String readMQCHAR256()
                                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads 256 bytes from the stream and converts them into a String, using the current CCSID.
        Specified by:
        readMQCHAR256 in interface MQDataInput
        Returns:
        String read from the stream
        Throws:
        java.nio.charset.CharacterCodingException - if conversion fails
        java.io.EOFException - at end of stream
        java.io.IOException
      • readUCS2Char

        public char readUCS2Char()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads two bytes from the stream and interprets it as a Unicode character. The byte-order is determined by the current integer encoding.
        Specified by:
        readUCS2Char in interface MQDataInput
        Returns:
        a character read from the stream
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readUTF

        public java.lang.String readUTF()
                                 throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a UTF-8 encoded string from the stream. The first two bytes of the stream give the length of the string. This is compatible with DataInput.writeUTF().
        Specified by:
        readUTF in interface MQDataInput
        Returns:
        a String, read from the stream
        Throws:
        java.io.EOFException - at end of stream
        java.io.UTFDataFormatException - if the stream does not contain a valid UTF-8 string
        java.io.IOException
        See Also:
        DataInput.readUTF()
      • readShort

        public short readShort()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads two bytes as a signed short. The byte order is determined by the current integer encoding.
        Specified by:
        readShort in interface MQDataInput
        Returns:
        the read short
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
        See Also:
        DataInput.readShort()
      • readMQSHORT

        public short readMQSHORT()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads two bytes as a signed short. The byte order is determined by the current integer encoding.
        Specified by:
        readMQSHORT in interface MQDataInput
        Returns:
        the read short
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQUSHORT

        public int readMQUSHORT()
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads two bytes as an unsigned integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQUSHORT in interface MQDataInput
        Returns:
        a two-byte unsigned integer, as an int
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readInt

        public int readInt()
                    throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as a signed integer. The byte order is determined by the current integer encoding.
        Specified by:
        readInt in interface MQDataInput
        Returns:
        the read int
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
        See Also:
        DataInput.readInt()
      • readMQLONG

        public int readMQLONG()
                       throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as a signed integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQLONG in interface MQDataInput
        Returns:
        the read int
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQULONG

        public long readMQULONG()
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as an unsigned integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQULONG in interface MQDataInput
        Returns:
        a four-byte unsigned integer, as a long
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQINT32

        public int readMQINT32()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as a signed integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQINT32 in interface MQDataInput
        Returns:
        the read int
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQUINT32

        public long readMQUINT32()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as an unsigned integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQUINT32 in interface MQDataInput
        Returns:
        a four-byte unsigned integer, as a long
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readLong

        public long readLong()
                      throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads eight bytes as a signed long integer. The byte order is determined by the current integer encoding.
        Specified by:
        readLong in interface MQDataInput
        Returns:
        the read long
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
        See Also:
        DataInput.readLong()
      • readMQINT64

        public long readMQINT64()
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads eight bytes as a signed long integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQINT64 in interface MQDataInput
        Returns:
        the read long
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readMQUINT64

        public java.math.BigInteger readMQUINT64()
                                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads eight bytes as an unsigned integer. The byte order is determined by the current integer encoding.
        Specified by:
        readMQUINT64 in interface MQDataInput
        Returns:
        an eight-byte unsigned integer, as a BigInteger
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
      • readFloat

        public float readFloat()
                        throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as a floating-point number, interpreted according to the current floating-point encoding. If the S390 encoding is used, this is the short HFP format. Note that conversion from this format to a Java float may lose precision.
        Specified by:
        readFloat in interface MQDataInput
        Returns:
        a four-byte precision floating point number.
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
        See Also:
        DataInput.readFloat()
      • readDouble

        public double readDouble()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads eight bytes as a floating-point number, interpreted according to the current floating-point encoding. If the S390 encoding is used, this is the long HFP format. Note that conversion from this format to a Java double may lose precision.
        Specified by:
        readDouble in interface MQDataInput
        Returns:
        an eight-byte precision floating point number.
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException
        See Also:
        DataInput.readFloat()
      • readDecimal

        public java.math.BigInteger readDecimal(int length)
                                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads a number of bytes as a packed-decimal integer. The current packed-decimal encoding determines the byte order.

        Unsigned packed-decimals are treated as positive; this method cannot distinguish between positive and negative zero.

        Specified by:
        readDecimal in interface MQDataInput
        Parameters:
        length - number of bytes to read
        Returns:
        the read packed-decimal number, as a BigInteger.
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException - if a malformed packed-decimal is encountered, or for other error.
      • readDecimal2

        public short readDecimal2()
                           throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads two bytes as a packed-decimal integer. The current packed-decimal encoding determines the byte order.

        Unsigned packed-decimals are treated as positive; this method cannot distinguish between positive and negative zero.

        Specified by:
        readDecimal2 in interface MQDataInput
        Returns:
        the read packed-decimal number, as a short, between -999 and 999 inclusive.
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException - if a malformed packed-decimal is encountered, or for other error.
      • readDecimal4

        public int readDecimal4()
                         throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads four bytes as a packed-decimal integer. The current packed-decimal encoding determines the byte order.

        Unsigned packed-decimals are treated as positive; this method cannot distinguish between positive and negative zero.

        Specified by:
        readDecimal4 in interface MQDataInput
        Returns:
        the read packed-decimal number, as an int, between -9999999 and 9999999 inclusive.
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException - if a malformed packed-decimal is encountered, or for other error.
      • readDecimal8

        public long readDecimal8()
                          throws java.io.IOException
        Description copied from interface: MQDataInput
        Reads eight bytes as a packed-decimal integer. The current packed-decimal encoding determines the byte order.

        Unsigned packed-decimals are treated as positive; this method cannot distinguish between positive and negative zero.

        Specified by:
        readDecimal8 in interface MQDataInput
        Returns:
        the read packed-decimal number, as a long, between -1015 and 1015 exclusive
        Throws:
        java.io.EOFException - at end of stream
        java.io.IOException - if a malformed packed-decimal is encountered, or for other error.
      • readObject

        public java.lang.Object readObject()
                                    throws java.io.IOException,
                                           java.lang.ClassNotFoundException
        Description copied from interface: MQDataInput
        Reads a serialized Java Object from the stream
        Specified by:
        readObject in interface MQDataInput
        Returns:
        a deserialized Object.
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException
        See Also:
        ObjectInput.readObject()
IBM Business Process ManagerTM
Release 8