com.informix.asf

Class IfxDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.informix.asf.IfxDataInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

IfxDebugDataInputStream

public class IfxDataInputStream
extends java.io.FilterInputStream

This class is the informix input stream class to read the informix datatypes from an InputStream.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
IfxDataInputStream(java.io.InputStream i)
IfxDataInputStream(java.io.InputStream i, boolean encoption)

Method Summary

Modifier and Type	Method and Description
protected void	clearTrace()
void	closeStream()
java.lang.String	getClientLocale() Return the class variable ClientLocale.
int	read() reads a byte from the inputstream.
int	read(byte[] b) reads into an array of bytes.
int	read(byte[] b, int offset, int length) reads into an array of bytes.
byte	readByte()
java.lang.String	readChar() Reads an informix string from the inputstream.
java.lang.String	readChar(java.lang.String dbEnc)
java.sql.Date	readDate() Reads an Informix date from the stream.
java.sql.Timestamp	readDateTime(short prec) Reads an Informix datetime from the stream.
java.math.BigDecimal	readDecimal(short prec) Reads an Informix decimal from the stream.
double	readDouble(short prec) Reads an Informix double from the stream.
int	readFully(byte[] b) reads into an array of bytes.
int	readFully(byte[] b, int offset, int length) reads into an array of bytes.
int	readInt() Reads an informix Integer from the inputstream.
Interval	readInterval(short prec) Reads an Informix interval from the stream.
long	readLong() Reads an Informix int8 from the stream.
long	readLongBigint() Reads an Informix bigint from the stream.
long	readLongInt() Reads an Informix int8 from the stream.
int	readPadded(byte[] b) reads into an array of bytes.
int	readPadded(byte[] b, int offset, int length) reads into an array of bytes.
byte[]	readRawDateTime(short prec) Reads an Informix datetime from the stream.
float	readReal(short prec) Reads an Informix real from the stream.
short	readShort() Reads an Informix smallint from the stream.
short	readSmallInt() Reads an Informix smallint from the stream.
void	setClientLocale(java.lang.String loc) Set the class variable ClientLocale.
int	skipBytes(int n) Skips exactly n bytes of input in the underlying input stream.

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

IfxDataInputStream

public IfxDataInputStream(java.io.InputStream i)

IfxDataInputStream

public IfxDataInputStream(java.io.InputStream i,
                          boolean encoption)

Method Detail

read

public int read()
         throws java.io.IOException

reads a byte from the inputstream. blocks till some input is available

Overrides:

read in class java.io.FilterInputStream

Returns:

the byte read from the inputstream.

Throws:

java.io.IOException - In case of I/O error.

read

public int read(byte[] b)
         throws java.io.IOException

reads into an array of bytes. blocks till some input is available

Overrides:

read in class java.io.FilterInputStream

Parameters:

b - byte array to read into.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

readByte

public byte readByte()
              throws java.io.IOException

Throws:

java.io.IOException

readFully

public int readFully(byte[] b)
              throws java.io.IOException

reads into an array of bytes. blocks till all input is available

Parameters:

b - byte array to read into.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

read

public int read(byte[] b,
                int offset,
                int length)
         throws java.io.IOException

reads into an array of bytes. blocks till some input is available

Overrides:

read in class java.io.FilterInputStream

Parameters:

b - byte array to read into.

offset - the offset of the data.

length - the maximum number of bytes to read.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

readFully

public int readFully(byte[] b,
                     int offset,
                     int length)
              throws java.io.IOException

reads into an array of bytes. blocks till all input is available

Parameters:

b - byte array to read into.

offset - the offset of the data.

length - the maximum number of bytes to read.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

readPadded

public int readPadded(byte[] b,
                      int offset,
                      int length)
               throws java.io.IOException

reads into an array of bytes. Reads the pad byte if needed blocks till all requested input is available

Parameters:

b - byte array to read into.

offset - the offset of the data.

length - the maximum number of bytes to read.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

readPadded

public int readPadded(byte[] b)
               throws java.io.IOException

reads into an array of bytes. Reads the pad byte if necessary. blocks till all requested input are available

Parameters:

b - byte array to read into.

offset - the offset of the data.

length - the maximum number of bytes to read.

Returns:

the number of bytes read or -1 if end of stream is reached

Throws:

java.io.IOException - In case of I/O error.

skipBytes

public int skipBytes(int n)
              throws java.io.IOException

Skips exactly n bytes of input in the underlying input stream. This method blocks until all the bytes are skipped, the end of the stream is detected, or an exception is thrown.

Parameters:

n - the number of bytes to be skipped.

Returns:

the number of bytes skipped, which is always n.

Throws:

java.io.EOFException - if this input stream reaches the end before skipping all the bytes.

java.io.IOException - if an I/O error occurs.

readInt

public int readInt()
            throws java.io.IOException

Reads an informix Integer from the inputstream. blocks till all input is available

Returns:

the integer converted to a java integer.

Throws:

java.io.IOException - In case of I/O error.

readChar

public java.lang.String readChar()
                          throws java.io.IOException,
                                 IfxASFException

Reads an informix string from the inputstream. blocks till all input is available

Returns:

the Char(n) converted to a java String. This method does not conform to the standard DataInputStream method signature for readChar() since it returns a string rather than a char.

Throws:

java.io.IOException - In case of I/O error.

IfxJamException - In case the length of the data is < 0.

IfxASFException

readChar

public java.lang.String readChar(java.lang.String dbEnc)
                          throws java.io.IOException,
                                 IfxASFException

Throws:

java.io.IOException

IfxASFException

readDate

public java.sql.Date readDate()
                       throws java.io.IOException,
                              IfxASFException

Reads an Informix date from the stream. blocks till all input is available

Returns:

the date converted to a java.sql.Date.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readDateTime

public java.sql.Timestamp readDateTime(short prec)
                                throws java.io.IOException,
                                       IfxASFException

Reads an Informix datetime from the stream. blocks till all input is available

Returns:

the datetime converted to a java.sql.Timestamp.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readRawDateTime

public byte[] readRawDateTime(short prec)
                       throws java.io.IOException,
                              IfxASFException

Reads an Informix datetime from the stream. blocks till all input is available

Returns:

the datetime as raw data.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readInterval

public Interval readInterval(short prec)
                      throws java.io.IOException,
                             IfxASFException

Reads an Informix interval from the stream. blocks till all input is available

Returns:

the interval converted to a java.lang.IntervalYM.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readDecimal

public java.math.BigDecimal readDecimal(short prec)
                                 throws java.io.IOException,
                                        IfxASFException

Reads an Informix decimal from the stream. blocks till all input is available

Returns:

the decimal converted to a java.lang.Bignum.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readDouble

public double readDouble(short prec)
                  throws java.io.IOException,
                         IfxASFException

Reads an Informix double from the stream. blocks till all input is available

Returns:

the double converted to a java double.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readReal

public float readReal(short prec)
               throws java.io.IOException,
                      IfxASFException

Reads an Informix real from the stream. blocks till all input is available

Returns:

the real converted to a java float.

Throws:

java.io.IOException - In case of I/O error.

IfxASFException - In case the length of the data is < 0.

readSmallInt

public short readSmallInt()
                   throws java.io.IOException

Reads an Informix smallint from the stream. blocks till all input is available

Returns:

the smallint converted to a java short.

Throws:

java.io.IOException - In case of I/O error.

readShort

public short readShort()
                throws java.io.IOException

Reads an Informix smallint from the stream. blocks till all input is available

Returns:

the smallint converted to a java short.

Throws:

java.io.IOException - In case of I/O error.

readLongInt

public long readLongInt()
                 throws java.io.IOException

Reads an Informix int8 from the stream. blocks till all input is available

Returns:

the smallint converted to a java short.

Throws:

java.io.IOException - In case of I/O error.

readLong

public long readLong()
              throws java.io.IOException

Reads an Informix int8 from the stream. blocks till all input is available

Returns:

the smallint converted to a java short.

Throws:

java.io.IOException - In case of I/O error.

setClientLocale

public void setClientLocale(java.lang.String loc)

Set the class variable ClientLocale. ClientLocale is the locale of any exception/error output. null defaults to the default (English).

Parameters:

loc -

getClientLocale

public java.lang.String getClientLocale()

Return the class variable ClientLocale. ClientLocale is the locale of any exception/error output.

Parameters:

loc -

readLongBigint

public long readLongBigint()
                    throws java.io.IOException

Reads an Informix bigint from the stream. blocks till all input is available

Returns:

the bigint converted to a java long.

Throws:

java.io.IOException - In case of I/O error.

closeStream

public void closeStream()

clearTrace

protected void clearTrace()