Module org.postgresql.pljava.internal

Package org.postgresql.pljava.pg

Class TupleTableSlotImpl<L extends Datum.Layout>

java.lang.Object

org.postgresql.pljava.pg.TupleTableSlotImpl<L>

All Implemented Interfaces:

TupleTableSlot

public abstract class TupleTableSlotImpl<L extends Datum.Layout>
extends Object
implements TupleTableSlot

Implementation of TupleTableSlot.

Nested Class Summary

Nested classes/interfaces inherited from interface org.postgresql.pljava.model.TupleTableSlot

TupleTableSlot.Indexed

Field Summary

Fields

Modifier and Type	Field	Description
protected final Datum.Accessor<ByteBuffer,L>[]	m_accessors
protected final Adapter<?,?>[]	m_adapters
protected final ByteBuffer	m_isnull
protected final ByteBuffer	m_tts
protected final TupleDescriptor	m_tupdesc
protected final ByteBuffer	m_values

Method Summary

Modifier and Type	Method	Description
protected Datum.Accessor<ByteBuffer,L>	accessor(int idx)	Returns the previously-selected Accessor for the item at the given index.
TupleDescriptor	descriptor()
protected Attribute	fromIndex(int idx, Adapter<?,?> adp)	Return the Attribute at this index into the associated TupleDescriptor, ensuring the elements at that index of m_accessors and m_adapters are set, or throw an exception if this Attribute doesn't belong to this slot's TupleDescriptor, or if the supplied Adapter can't fetch it.
<T> T	get(int idx, Adapter.As<T,?> adapter)
boolean	get(int idx, Adapter.AsBoolean<?> adapter)
byte	get(int idx, Adapter.AsByte<?> adapter)
char	get(int idx, Adapter.AsChar<?> adapter)
double	get(int idx, Adapter.AsDouble<?> adapter)
float	get(int idx, Adapter.AsFloat<?> adapter)
int	get(int idx, Adapter.AsInt<?> adapter)
long	get(int idx, Adapter.AsLong<?> adapter)
short	get(int idx, Adapter.AsShort<?> adapter)
<T> T	get(Attribute att, Adapter.As<T,?> adapter)
boolean	get(Attribute att, Adapter.AsBoolean<?> adapter)
byte	get(Attribute att, Adapter.AsByte<?> adapter)
char	get(Attribute att, Adapter.AsChar<?> adapter)
double	get(Attribute att, Adapter.AsDouble<?> adapter)
float	get(Attribute att, Adapter.AsFloat<?> adapter)
int	get(Attribute att, Adapter.AsInt<?> adapter)
long	get(Attribute att, Adapter.AsLong<?> adapter)
short	get(Attribute att, Adapter.AsShort<?> adapter)
protected abstract boolean	isNull(int idx)	Only to be called after idx is known valid from calling toIndex.
protected void	memoize(int idx, Attribute att, Adapter<?,?> adp)	Called after verifying that att belongs to this slot's TupleDescriptor, that idx is its corresponding (zero-based) index, and that m_adapters[idx] does not already contain adp.
RegClass	relation()
protected abstract Datum.Accessor<ByteBuffer,L>	selectAccessor(boolean byValue, short length)	Selects appropriate Accessor for this Layout given byValue and length.
protected int	toIndex(Attribute att, Adapter<?,?> adp)	Return the index into m_accessors for this attribute, ensuring the elements at that index of m_accessors and m_adapters are set, or throw an exception if this Attribute doesn't belong to this slot's TupleDescriptor, or if the supplied Adapter can't fetch it.
protected abstract int	toOffset(int idx)	Only to be called after idx is known valid from calling toIndex.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.postgresql.pljava.model.TupleTableSlot

sqlGet, sqlGet, sqlGet, sqlGet, sqlGet, sqlGet, sqlGet, sqlGet, sqlGet

Field Details

m_tts

protected final ByteBuffer m_tts

m_tupdesc

protected final TupleDescriptor m_tupdesc

m_values

protected final ByteBuffer m_values

m_isnull

protected final ByteBuffer m_isnull

m_accessors

protected final Datum.Accessor<ByteBuffer,L extends Datum.Layout>[] m_accessors

m_adapters

protected final Adapter<?,?>[] m_adapters

Method Details

toIndex

protected int toIndex(Attribute att,
 Adapter<?,?> adp)

Return the index into m_accessors for this attribute, ensuring the elements at that index of m_accessors and m_adapters are set, or throw an exception if this Attribute doesn't belong to this slot's TupleDescriptor, or if the supplied Adapter can't fetch it.

Most tests are skipped if the index is in range and m_adapters at that index already contains the supplied Adapter.

fromIndex

protected Attribute fromIndex(int idx,
 Adapter<?,?> adp)

Return the Attribute at this index into the associated TupleDescriptor, ensuring the elements at that index of m_accessors and m_adapters are set, or throw an exception if this Attribute doesn't belong to this slot's TupleDescriptor, or if the supplied Adapter can't fetch it.

Most tests are skipped if the index is in range and m_adapters at that index already contains the supplied Adapter.

memoize

protected void memoize(int idx,
 Attribute att,
 Adapter<?,?> adp)

Called after verifying that att belongs to this slot's TupleDescriptor, that idx is its corresponding (zero-based) index, and that m_adapters[idx] does not already contain adp.

selectAccessor

protected abstract Datum.Accessor<ByteBuffer,L> selectAccessor(boolean byValue,
 short length)

Selects appropriate Accessor for this Layout given byValue and length.

accessor

protected Datum.Accessor<ByteBuffer,L> accessor(int idx)

Returns the previously-selected Accessor for the item at the given index.

The indirection's cost may be regrettable, but it simplifies the implementation of Indexed.

isNull

protected abstract boolean isNull(int idx)

Only to be called after idx is known valid from calling toIndex.

toOffset

protected abstract int toOffset(int idx)

Only to be called after idx is known valid from calling toIndex.

relation

public RegClass relation()

Specified by:

relation in interface TupleTableSlot

descriptor

public TupleDescriptor descriptor()

Specified by:

descriptor in interface TupleTableSlot

get

public <T> T get(Attribute att,
 Adapter.As<T,?> adapter)

Specified by:

get in interface TupleTableSlot

get

public long get(Attribute att,
 Adapter.AsLong<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public double get(Attribute att,
 Adapter.AsDouble<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public int get(Attribute att,
 Adapter.AsInt<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public float get(Attribute att,
 Adapter.AsFloat<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public short get(Attribute att,
 Adapter.AsShort<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public char get(Attribute att,
 Adapter.AsChar<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public byte get(Attribute att,
 Adapter.AsByte<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public boolean get(Attribute att,
 Adapter.AsBoolean<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public <T> T get(int idx,
 Adapter.As<T,?> adapter)

Specified by:

get in interface TupleTableSlot

get

public long get(int idx,
 Adapter.AsLong<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public double get(int idx,
 Adapter.AsDouble<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public int get(int idx,
 Adapter.AsInt<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public float get(int idx,
 Adapter.AsFloat<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public short get(int idx,
 Adapter.AsShort<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public char get(int idx,
 Adapter.AsChar<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public byte get(int idx,
 Adapter.AsByte<?> adapter)

Specified by:

get in interface TupleTableSlot

get

public boolean get(int idx,
 Adapter.AsBoolean<?> adapter)

Specified by:

get in interface TupleTableSlot