Package org.postgresql.jdbc

Class ArrayEncoding.FixedSizePrimitiveArrayEncoder<A>

java.lang.Object

org.postgresql.jdbc.ArrayEncoding.AbstractArrayEncoder<A>

org.postgresql.jdbc.ArrayEncoding.FixedSizePrimitiveArrayEncoder<A>

Type Parameters:

A - The primitive array to support.

All Implemented Interfaces:

ArrayEncoding.ArrayEncoder<A>

Enclosing class:

ArrayEncoding

private abstract static class ArrayEncoding.FixedSizePrimitiveArrayEncoder<A>
extends ArrayEncoding.AbstractArrayEncoder<A>

Base support for primitive arrays.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	fieldSize

Fields inherited from class org.postgresql.jdbc.ArrayEncoding.AbstractArrayEncoder

arrayOid

Constructor Summary

Constructors

Constructor	Description
FixedSizePrimitiveArrayEncoder(int fieldSize, int oid, int arrayOid)

Method Summary

Modifier and Type	Method	Description
(package private) final int	countNulls(A array)	Counts the number of null elements in array.
final byte[]	toBinaryRepresentation(BaseConnection connection, A array, int oid)	Creates binary representation of the array.
(package private) final byte[]	toSingleDimensionBinaryRepresentation(BaseConnection connection, A array)	Creates byte[] of just the raw data (no metadata).
protected abstract void	write(A array, byte[] bytes, int offset)	Write the entire contents of array to bytes starting at offset without metadata describing type or length.

Methods inherited from class org.postgresql.jdbc.ArrayEncoding.AbstractArrayEncoder

getDefaultArrayTypeOid, getTypeOID, supportBinaryRepresentation, toArrayString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.postgresql.jdbc.ArrayEncoding.ArrayEncoder

appendArray

Field Details

fieldSize

private final int fieldSize

Constructor Details

FixedSizePrimitiveArrayEncoder

FixedSizePrimitiveArrayEncoder(int fieldSize,
 int oid,
 int arrayOid)

Method Details

countNulls

final int countNulls(A array)

Counts the number of null elements in array.

Always returns 0.

Overrides:

countNulls in class ArrayEncoding.AbstractArrayEncoder<A>

Parameters:

array - The array to count null elements in.

Returns:

The number of null elements in array.

toBinaryRepresentation

public final byte[] toBinaryRepresentation(BaseConnection connection,
 A array,
 int oid)
                                    throws SQLException,
SQLFeatureNotSupportedException

Creates binary representation of the array.

Parameters:

connection - The connection the binary representation will be used on. Attributes from the connection might impact how values are translated to binary.

array - The array to binary encode. Must not be null, but may contain null elements.

oid - The array type oid to use. Calls to ArrayEncoding.ArrayEncoder.supportBinaryRepresentation(int) must have returned true.

Returns:

The binary representation of array.

Throws:

SQLFeatureNotSupportedException - If ArrayEncoding.ArrayEncoder.supportBinaryRepresentation(int) is false for oid.

SQLException

toSingleDimensionBinaryRepresentation

final byte[] toSingleDimensionBinaryRepresentation(BaseConnection connection,
 A array)
                                            throws SQLException,
SQLFeatureNotSupportedException

Creates byte[] of just the raw data (no metadata).

Specified by:

toSingleDimensionBinaryRepresentation in class ArrayEncoding.AbstractArrayEncoder<A>

Parameters:

connection - The connection the binary representation will be used on.

array - The array to create binary representation of. Will not be null, but may contain null elements.

Returns:

byte[] of just the raw data (no metadata).

Throws:

SQLFeatureNotSupportedException - If ArrayEncoding.AbstractArrayEncoder.supportBinaryRepresentation(int) is false for oid.

SQLException

write

protected abstract void write(A array,
 byte[] bytes,
 int offset)

Write the entire contents of array to bytes starting at offset without metadata describing type or length.

Parameters:

array - The array to write.

bytes - The byte[] to write to.

offset - The offset into bytes to start writing.