Package org.postgresql.jdbc

Class ArrayEncoding.RecursiveArrayEncoder

java.lang.Object

org.postgresql.jdbc.ArrayEncoding.RecursiveArrayEncoder

All Implemented Interfaces:

ArrayEncoding.ArrayEncoder

Enclosing class:

ArrayEncoding

private static final class ArrayEncoding.RecursiveArrayEncoder
extends Object
implements ArrayEncoding.ArrayEncoder

Wraps an ArrayEncoding.AbstractArrayEncoder implementation and provides support for 2 or more dimensions using recursion.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	dimensions
private final ArrayEncoding.AbstractArrayEncoder	support

Constructor Summary

Constructors

Constructor	Description
RecursiveArrayEncoder(ArrayEncoding.AbstractArrayEncoder support, int dimensions)

Method Summary

Modifier and Type	Method	Description
void	appendArray(StringBuilder sb, char delim, Object array)	Append String representation of array to sb.
private void	arrayString(StringBuilder sb, Object array, char delim, int depth)
int	getDefaultArrayTypeOid()	The default array type oid supported by this instance.
private boolean	hasNulls(Object array, int depth)
boolean	supportBinaryRepresentation(int oid)	Indicates if an array can be encoded in binary form to array oid.
String	toArrayString(char delim, Object array)	Creates String representation of the array.
byte[]	toBinaryRepresentation(BaseConnection connection, Object array, int oid)	Creates binary representation of the array.
private void	writeArray(BaseConnection connection, byte[] buffer, ByteArrayOutputStream baos, Object array, int depth, boolean first)

Methods inherited from class java.lang.Object

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

Field Details

support

private final ArrayEncoding.AbstractArrayEncoder support

dimensions

private final int dimensions

Constructor Details

RecursiveArrayEncoder

RecursiveArrayEncoder(ArrayEncoding.AbstractArrayEncoder support,
 int dimensions)

Parameters:

support - The instance providing support for the base array type.

Method Details

getDefaultArrayTypeOid

public int getDefaultArrayTypeOid()

The default array type oid supported by this instance.

Specified by:

getDefaultArrayTypeOid in interface ArrayEncoding.ArrayEncoder

Returns:

The default array type oid supported by this instance.

toArrayString

public String toArrayString(char delim,
 Object array)

Creates String representation of the array.

Specified by:

toArrayString in interface ArrayEncoding.ArrayEncoder

Parameters:

delim - The character to use to delimit between elements.

array - The array to represent as a String.

Returns:

String representation of the array.

appendArray

public void appendArray(StringBuilder sb,
 char delim,
 Object array)

Append String representation of array to sb.

Specified by:

appendArray in interface ArrayEncoding.ArrayEncoder

Parameters:

sb - The StringBuilder to append to.

delim - The delimiter between elements.

array - The array to represent. Will not be null, but may contain null elements.

arrayString

private void arrayString(StringBuilder sb,
 Object array,
 char delim,
 int depth)

supportBinaryRepresentation

public boolean supportBinaryRepresentation(int oid)

Indicates if an array can be encoded in binary form to array oid.

Specified by:

supportBinaryRepresentation in interface ArrayEncoding.ArrayEncoder

Parameters:

oid - The array oid to see check for binary support.

Returns:

Indication of whether ArrayEncoding.ArrayEncoder.toBinaryRepresentation(BaseConnection, Object, int) is supported for oid.

hasNulls

private boolean hasNulls(Object array,
 int depth)

toBinaryRepresentation

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

Creates binary representation of the array.

Specified by:

toBinaryRepresentation in interface ArrayEncoding.ArrayEncoder

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

writeArray

private void writeArray(BaseConnection connection,
 byte[] buffer,
 ByteArrayOutputStream baos,
 Object array,
 int depth,
 boolean first)
                 throws IOException,
SQLException

Throws:

IOException

SQLException