com.informix.jdbc

Interface IfmxUDTSQLOutput

All Superinterfaces:

java.sql.SQLOutput

public interface IfmxUDTSQLOutput
extends java.sql.SQLOutput

The IfmxUDTSQLOutput interface extends the SQLOutput interface. This interface is specifically for Informix user-defined types. It contains Informix extension methods for serializing fixed-length data.

Method Summary

Modifier and Type	Method and Description
int	available() Returns the number of valid bytes remaining in this output stream.
boolean	getAutoAlignment() Returns true if auto alignment is enabled and false if auto alignment has been disabled.
int	getCurrentPosition() Returns the current position in the output stream.
IfxUDTInfo	getUDTInfo(int xid) Get general information about opaque and distinct types and detailed information for complex types.
IfxUDTInfo	getUDTInfo(java.lang.String name, java.lang.String owner) Get general information about opaque and distinct types and detailed information for complex types.
int	length() Gets the total length written to the data stream.
void	setAutoAlignment(boolean value) Enable or disable automatic alignment.
void	setCurrentPosition(int position) Resets the current position.
void	skipBytes(int len) Skips over and discards len bytes of data from the output stream.
void	writeBytes(byte[] b, int length) Writes the next attribute to the stream as a Java byte array.
void	writeInterval(Interval intrvl) Writes the next attribute to the stream as a Java Interval.
void	writeString(java.lang.String x, int length) Writes the next attribute to the stream as a Java String.

Methods inherited from interface java.sql.SQLOutput

writeArray, writeAsciiStream, writeBigDecimal, writeBinaryStream, writeBlob, writeBoolean, writeByte, writeBytes, writeCharacterStream, writeClob, writeDate, writeDouble, writeFloat, writeInt, writeLong, writeNClob, writeNString, writeObject, writeObject, writeRef, writeRowId, writeShort, writeSQLXML, writeString, writeStruct, writeTime, writeTimestamp, writeURL

Method Detail

writeString

void writeString(java.lang.String x,
                 int length)
          throws java.sql.SQLException

Writes the next attribute to the stream as a Java String. This method is similar to SQLOutput.writeString(), except that it writes a fixed length of data to the stream. If the String passed in is shorter than the specified length, the driver zero-pads the string. This method replaces SQLOutput.writeString() in the UDT implementation. Since the user-defined type is unknown to the driver, the user MUST supply a length in order for the driver to write the next attribute properly.

Parameters:

x - The value to pass to the database.

length - The length of the specified field.

Throws:

java.sql.SQLException

writeBytes

void writeBytes(byte[] b,
                int length)
         throws java.sql.SQLException

Writes the next attribute to the stream as a Java byte array. This method is similar to SQLOutput.writeBytes(), except that it writes a fixed length of data to the stream. If the array passed in is shorter than the specified length, the driver zero-pads the array. This method replaces SQLOutput.writeBytes() in the UDT implementation. Since the user-defined type is unknown to the driver, the user MUST supply a length in order for the driver to write the next attribute properly.

Parameters:

b - The value to be passed to the database.

length - The length of the specified field.

Throws:

java.sql.SQLException

writeInterval

void writeInterval(Interval intrvl)
            throws java.sql.SQLException

Writes the next attribute to the stream as a Java Interval. This method is an Informix extension.

Parameters:

intrvl - The interval to be passed to the database.

Throws:

java.sql.SQLException

length

int length()

Gets the total length written to the data stream.

Returns:

The total length.

setAutoAlignment

void setAutoAlignment(boolean value)

Enable or disable automatic alignment. The default is that the driver automatically handles alignment between data fields.

Parameters:

value - = true then alignment should be handles automatically. If value = false then no alignment is done. It's the user's respon- sibility to call skipBytes(int) to handle alignment.

getAutoAlignment

boolean getAutoAlignment()

Returns true if auto alignment is enabled and false if auto alignment has been disabled.

Returns:

true if auto alignment is enabled.

skipBytes

void skipBytes(int len)
        throws java.sql.SQLException

Skips over and discards len bytes of data from the output stream. alignment has been disabled.

Parameters:

len - Number of bytes to skip over and discard.

Throws:

java.sql.SQLException

getCurrentPosition

int getCurrentPosition()

Returns the current position in the output stream.

Returns:

Returns the current position.

setCurrentPosition

void setCurrentPosition(int position)
                 throws java.sql.SQLException

Resets the current position.

Parameters:

position -

Throws:

java.sql.SQLException

available

int available()

Returns the number of valid bytes remaining in this output stream. This will always return 0 unless the user has called setCurrentPosition().

Returns:

Returns the number of bytes available in the output stream

getUDTInfo

IfxUDTInfo getUDTInfo(int xid)
               throws java.sql.SQLException

Get general information about opaque and distinct types and detailed information for complex types. Calls IfmxConnection.getUDTInfo(int)

Parameters:

xid - Is the extended id found in sysxtdtype system catalog.

Returns:

The detailed type information as an Informix IfxUDTInfo.

Throws:

java.sql.SQLException

getUDTInfo

IfxUDTInfo getUDTInfo(java.lang.String name,
                      java.lang.String owner)
               throws java.sql.SQLException

Get general information about opaque and distinct types and detailed information for complex types. Calls IfmxConnection.getUDTInfo(String name, String owner)

Parameters:

name - The data type name.

owner - The owner of the data type (can be null).

Returns:

The detailed type information as an Informix IfxUDTInfo.

Throws:

java.sql.SQLException