Package deltix.qsrv.hf.tickdb.impl

Class InternalByteArrayOutputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable
    public class InternalByteArrayOutputStream
extends java.io.OutputStream
    This class implements an output stream in which the data is written into a byte array. The buffer automatically grows as data is written to it. The data can be retrieved using toByteArray() and toString().

    Closing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.

    Since:
    JDK1.0

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected byte[] buf
      The buffer where data is stored.
      protected int count
      The number of valid bytes in the buffer.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Closing a ByteArrayOutputStream has no effect.
      byte[] getInternalBuffer()  
      void reset()
      Resets the count field of this byte array output stream to zero, so that all currently accumulated output in the output stream is discarded.
      int size()
      Returns the current size of the buffer.
      byte[] toByteArray()
      Creates a newly allocated byte array.
      java.lang.String toString()
      Converts the buffer's contents into a string decoding bytes using the platform's default character set.
      java.lang.String toString​(java.lang.String charsetName)
      Converts the buffer's contents into a string by decoding the bytes using the named charset.
      void write​(byte[] b, int off, int len)
      Writes len bytes from the specified byte array starting at offset off to this byte array output stream.
      void write​(int b)
      Writes the specified byte to this byte array output stream.
      void writeTo​(java.io.OutputStream out)
      Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).

      • Methods inherited from class java.io.OutputStream

        flush, nullOutputStream, write

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • buf

        protected byte[] buf
        The buffer where data is stored.

      • count

        protected int count
        The number of valid bytes in the buffer.

    • Constructor Detail

      • InternalByteArrayOutputStream

        public InternalByteArrayOutputStream()
        Creates a new byte array output stream. The buffer capacity is initially 32 bytes, though its size increases if necessary.

      • InternalByteArrayOutputStream

        public InternalByteArrayOutputStream​(int size)
        Creates a new byte array output stream, with a buffer capacity of the specified size, in bytes.
        Parameters:
        size - the initial size.
        Throws:
        java.lang.IllegalArgumentException - if size is negative.

    • Method Detail

      • write

        public void write​(int b)
        Writes the specified byte to this byte array output stream.
        Specified by:
        write in class java.io.OutputStream
        Parameters:
        b - the byte to be written.

      • write

        public void write​(byte[] b,
                  int off,
                  int len)
        Writes len bytes from the specified byte array starting at offset off to this byte array output stream.
        Overrides:
        write in class java.io.OutputStream
        Parameters:
        b - the data.
        off - the start offset in the data.
        len - the number of bytes to write.

      • writeTo

        public void writeTo​(java.io.OutputStream out)
             throws java.io.IOException
        Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).
        Parameters:
        out - the output stream to which to write the data.
        Throws:
        java.io.IOException - if an I/O error occurs.

      • reset

        public void reset()
        Resets the count field of this byte array output stream to zero, so that all currently accumulated output in the output stream is discarded. The output stream can be used again, reusing the already allocated buffer space.
        See Also:
        ByteArrayInputStream.count

      • toByteArray

        public byte[] toByteArray()
        Creates a newly allocated byte array. Its size is the current size of this output stream and the valid contents of the buffer have been copied into it.
        Returns:
        the current contents of this output stream, as a byte array.
        See Also:
        size()

      • size

        public int size()
        Returns the current size of the buffer.
        Returns:
        the value of the count field, which is the number of valid bytes in this output stream.
        See Also:
        count

      • toString

        public java.lang.String toString()
        Converts the buffer's contents into a string decoding bytes using the platform's default character set. The length of the new String is a function of the character set, and hence may not be equal to the size of the buffer.

        This method always replaces malformed-input and unmappable-character sequences with the default replacement string for the platform's default character set. The CharsetDecoder class should be used when more control over the decoding process is required.

        Overrides:
        toString in class java.lang.Object
        Returns:
        String decoded from the buffer's contents.
        Since:
        JDK1.1

      • toString

        public java.lang.String toString​(java.lang.String charsetName)
                          throws java.io.UnsupportedEncodingException
        Converts the buffer's contents into a string by decoding the bytes using the named charset. The length of the new String is a function of the charset, and hence may not be equal to the length of the byte array.

        This method always replaces malformed-input and unmappable-character sequences with this charset's default replacement string. The CharsetDecoder class should be used when more control over the decoding process is required.

        Parameters:
        charsetName - the name of a supported charset
        Returns:
        String decoded from the buffer's contents.
        Throws:
        java.io.UnsupportedEncodingException - If the named charset is not supported
        Since:
        JDK1.1

      • close

        public void close()
           throws java.io.IOException
        Closing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Overrides:
        close in class java.io.OutputStream
        Throws:
        java.io.IOException

      • getInternalBuffer

        public byte[] getInternalBuffer()