org.apache.ignite.internal.processors.query.h2

Class H2RowDescriptor

java.lang.Object

org.apache.ignite.internal.processors.query.h2.H2RowDescriptor

All Implemented Interfaces:

GridH2RowDescriptor

public class H2RowDescriptor
extends Object
implements GridH2RowDescriptor

Row descriptor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkKeyIndexCondition(int[] masks, int mask) Checks if provided index condition is allowed for key column or key alias column.
Object	columnValue(Object key, Object val, int col) Gets column value by column index.
GridCacheContext<?,?>	context() Gets cache context for this row descriptor.
GridH2Row	createRow(KeyCacheObject key, int partId, CacheObject val, GridCacheVersion ver, long expirationTime) Creates new row.
int	fieldsCount()
int	fieldType(int col) Gets value type for column index.
int	getAlternativeColumnId(int colId) Gets alternative column id that may substitute the given column id.
IgniteH2Indexing	indexing() Gets indexing.
void	initValueCache(org.h2.value.Value[] valCache, org.h2.value.Value key, org.h2.value.Value val, org.h2.value.Value ver) Initializes value cache with key, val and version.
boolean	isColumnKeyProperty(int col) Determine whether a column corresponds to a property of key or to one of value.
boolean	isKeyColumn(int colId) Checks if provided column id matches key column or key alias.
boolean	isKeyValueOrVersionColumn(int colId) Checks if provided column id matches key, key alias, value, value alias or version column.
boolean	isValueColumn(int colId) Checks if provided column id matches value column or alias.
org.h2.result.SearchRow	prepareProxyIndexRow(org.h2.result.SearchRow row) Clones provided row and copies values of alias key and val columns into respective key and val positions.
void	refreshMetadataFromTypeDescriptor() Update metadata of this row descriptor according to current state of type descriptor.
void	setColumnValue(Object key, Object val, Object colVal, int col) Gets column value by column index.
GridQueryTypeDescriptor	type() Gets type descriptor.
int	valueType()
org.h2.value.Value	wrap(Object obj, int type) Wraps object to respective Value.

Methods inherited from class java.lang.Object

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

Method Detail

refreshMetadataFromTypeDescriptor

public final void refreshMetadataFromTypeDescriptor()

Update metadata of this row descriptor according to current state of type descriptor.

indexing

public IgniteH2Indexing indexing()

Gets indexing.

Specified by:

indexing in interface GridH2RowDescriptor

Returns:

indexing.

type

public GridQueryTypeDescriptor type()

Gets type descriptor.

Specified by:

type in interface GridH2RowDescriptor

Returns:

Type descriptor.

context

public GridCacheContext<?,?> context()

Gets cache context for this row descriptor.

Specified by:

context in interface GridH2RowDescriptor

Returns:

Cache context.

wrap

public org.h2.value.Value wrap(Object obj,
                      int type)
                        throws IgniteCheckedException

Wraps object to respective Value.

Specified by:

wrap in interface GridH2RowDescriptor

Parameters:

obj - Object.

type - Value type.

Returns:

Value.

Throws:

IgniteCheckedException - If failed.

createRow

public GridH2Row createRow(KeyCacheObject key,
                  int partId,
                  @Nullable
                  CacheObject val,
                  GridCacheVersion ver,
                  long expirationTime)
                    throws IgniteCheckedException

Creates new row.

Specified by:

createRow in interface GridH2RowDescriptor

Parameters:

key - Key.

val - Value.

ver - Version.

expirationTime - Expiration time in millis.

Returns:

Row.

Throws:

IgniteCheckedException - If failed.

valueType

public int valueType()

Specified by:

valueType in interface GridH2RowDescriptor

Returns:

Value type.

fieldsCount

public int fieldsCount()

Specified by:

fieldsCount in interface GridH2RowDescriptor

Returns:

Total fields count.

fieldType

public int fieldType(int col)

Gets value type for column index.

Specified by:

fieldType in interface GridH2RowDescriptor

Parameters:

col - Column index.

Returns:

Value type.

columnValue

public Object columnValue(Object key,
                 Object val,
                 int col)

Gets column value by column index.

Specified by:

columnValue in interface GridH2RowDescriptor

Parameters:

key - Key.

val - Value.

col - Column index.

Returns:

Column value.

setColumnValue

public void setColumnValue(Object key,
                  Object val,
                  Object colVal,
                  int col)

Gets column value by column index.

Specified by:

setColumnValue in interface GridH2RowDescriptor

Parameters:

key - Key.

val - Value.

colVal - Value to set to column.

col - Column index.

isColumnKeyProperty

public boolean isColumnKeyProperty(int col)

Determine whether a column corresponds to a property of key or to one of value.

Specified by:

isColumnKeyProperty in interface GridH2RowDescriptor

Parameters:

col - Column index.

Returns:

true if given column corresponds to a key property, false otherwise

isKeyColumn

public boolean isKeyColumn(int colId)

Checks if provided column id matches key column or key alias.

Specified by:

isKeyColumn in interface GridH2RowDescriptor

Parameters:

colId - Column id.

Returns:

Result.

isValueColumn

public boolean isValueColumn(int colId)

Checks if provided column id matches value column or alias.

Specified by:

isValueColumn in interface GridH2RowDescriptor

Parameters:

colId - Column id.

Returns:

Result.

isKeyValueOrVersionColumn

public boolean isKeyValueOrVersionColumn(int colId)

Checks if provided column id matches key, key alias, value, value alias or version column.

Specified by:

isKeyValueOrVersionColumn in interface GridH2RowDescriptor

Parameters:

colId - Column id.

Returns:

Result.

checkKeyIndexCondition

public boolean checkKeyIndexCondition(int[] masks,
                             int mask)

Checks if provided index condition is allowed for key column or key alias column.

Specified by:

checkKeyIndexCondition in interface GridH2RowDescriptor

Parameters:

masks - Array containing Index Condition masks for each column.

mask - Index Condition to check.

Returns:

Result.

initValueCache

public void initValueCache(org.h2.value.Value[] valCache,
                  org.h2.value.Value key,
                  org.h2.value.Value val,
                  org.h2.value.Value ver)

Initializes value cache with key, val and version.

Specified by:

initValueCache in interface GridH2RowDescriptor

Parameters:

valCache - Value cache.

key - Key.

val - Value.

ver - Version.

prepareProxyIndexRow

public org.h2.result.SearchRow prepareProxyIndexRow(org.h2.result.SearchRow row)

Clones provided row and copies values of alias key and val columns into respective key and val positions.

Specified by:

prepareProxyIndexRow in interface GridH2RowDescriptor

Parameters:

row - Source row.

Returns:

Result.

getAlternativeColumnId

public int getAlternativeColumnId(int colId)

Gets alternative column id that may substitute the given column id. For alias column returns original one. For original column returns its alias. Otherwise, returns the given column id.

Specified by:

getAlternativeColumnId in interface GridH2RowDescriptor

Parameters:

colId - Column id.

Returns:

Result.