org.gridgain.grid.spi.indexing.h2.opt

Interface GridH2RowDescriptor

All Superinterfaces:

org.gridgain.grid.util.offheap.unsafe.GridOffHeapSmartPointerFactory<GridH2KeyValueRowOffheap>

public interface GridH2RowDescriptor
extends org.gridgain.grid.util.offheap.unsafe.GridOffHeapSmartPointerFactory<GridH2KeyValueRowOffheap>

Row descriptor.

Method Summary

Methods

Modifier and Type	Method and Description
void	cache(GridH2KeyValueRowOffheap row)
Object	columnValue(Object obj, int col) Gets column value by column index.
GridH2AbstractKeyValueRow	createRow(Object key, Object val, long expirationTime) Creates new row.
int	fieldsCount()
int	fieldType(int col) Gets value type for column index.
boolean	isKeyColumn(int col)
org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory	memory()
Object	readFromSwap(Object key)
GridH2IndexingSpi	spi()
void	uncache(long ptr)
boolean	valueToString()
int	valueType()

Methods inherited from interface org.gridgain.grid.util.offheap.unsafe.GridOffHeapSmartPointerFactory

createPointer

Method Detail

spi

GridH2IndexingSpi spi()

Returns:

SPI.

createRow

GridH2AbstractKeyValueRow createRow(Object key,
                                  @Nullable
                                  Object val,
                                  long expirationTime)
                                    throws org.gridgain.grid.spi.GridSpiException

Creates new row.

Parameters:

key - Key.

val - Value.

expirationTime - Expiration time in millis.

Returns:

Row.

Throws:

org.gridgain.grid.spi.GridSpiException - If failed.

readFromSwap

Object readFromSwap(Object key)
                    throws org.gridgain.grid.GridException

Parameters:

key - Cache key.

Returns:

Value.

Throws:

org.gridgain.grid.GridException - If failed.

valueType

int valueType()

Returns:

Value type.

valueToString

boolean valueToString()

Returns:

true If we need to store toString() of value.

fieldsCount

int fieldsCount()

Returns:

Total fields count.

fieldType

int fieldType(int col)

Gets value type for column index.

Parameters:

col - Column index.

Returns:

Value type.

columnValue

Object columnValue(Object obj,
                 int col)

Gets column value by column index.

Parameters:

obj - Object to extract value from.

col - Column index.

Returns:

Column value.

isKeyColumn

boolean isKeyColumn(int col)

Parameters:

col - Column index.

Returns:

True if column relates to key, false if it relates to value.

memory

org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory memory()

Returns:

Unsafe memory.

cache

void cache(GridH2KeyValueRowOffheap row)

Parameters:

row - Deserialized offheap row to cache in heap.

uncache

void uncache(long ptr)

Parameters:

ptr - Offheap pointer to remove from cache.