org.intermine.sql.writebatch
Class PostgresDataOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.io.DataOutputStream
              org.intermine.sql.writebatch.PostgresDataOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.DataOutput, java.io.Flushable

public class PostgresDataOutputStream
extends java.io.DataOutputStream

A subclass of DataOutputStream that has extra methods useful for reducing the memory footprint of the Postgres database write operations.

Field Summary

Fields inherited from class java.io.DataOutputStream

written

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

PostgresDataOutputStream(java.io.OutputStream out)

Method Summary

protected int	writeLargeUTF(java.util.Collection<java.lang.String> strs) Writes the given Collection of Strings to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.
int	writeLargeUTF(java.lang.String str) Writes the given String to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.
int	writeLargeUTF(StringConstructor str) Writes the given StringConstructor to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.

Methods inherited from class java.io.DataOutputStream

flush, size, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.io.FilterOutputStream

close, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.DataOutput

write

Constructor Detail

PostgresDataOutputStream

public PostgresDataOutputStream(java.io.OutputStream out)

Parameters:

out - the OutputStream to write to

See Also:

DataOutputStream

Method Detail

writeLargeUTF

public int writeLargeUTF(java.lang.String str)
                  throws java.io.IOException

Writes the given String to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.

Parameters:

str - the String

Returns:

the number of bytes written to the OutputStream

Throws:

java.io.IOException - if there is an error writing to the underlying OutputStream

writeLargeUTF

public int writeLargeUTF(StringConstructor str)
                  throws java.io.IOException

Writes the given StringConstructor to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.

Parameters:

str - the StringConstructor

Returns:

the number of bytes written to the OutputStream

Throws:

java.io.IOException - if there is an error writing to the underlying OutputStream

writeLargeUTF

protected int writeLargeUTF(java.util.Collection<java.lang.String> strs)
                     throws java.io.IOException

Writes the given Collection of Strings to the stream in modified UTF-8 format, following its length in bytes as a four-byte integer.

Parameters:

strs - the Collection of Strings

Returns:

the number of bytes written to the OutputStream

Throws:

java.io.IOException - if there is an error writing to the underlying OutputStream