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

Class GridH2RowDescriptor

java.lang.Object

org.apache.ignite.internal.processors.query.h2.opt.GridH2RowDescriptor

public class GridH2RowDescriptor
extends Object

Row descriptor.

Constructor Summary

Constructors

Constructor and Description
GridH2RowDescriptor(IgniteH2Indexing idx, H2TableDescriptor tbl, GridQueryTypeDescriptor type) Constructor.

Method Summary

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(CacheDataRow dataRow) 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.
boolean	isColumnKeyProperty(int col) Determine whether a column corresponds to a property of key or to one of value.
boolean	isKeyAliasColumn(int colId) Checks if provided column id matches key alias column.
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	isValueAliasColumn(int colId) Checks if provided column id matches value alias 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

Constructor Detail

GridH2RowDescriptor

public GridH2RowDescriptor(IgniteH2Indexing idx,
                           H2TableDescriptor tbl,
                           GridQueryTypeDescriptor type)

Constructor.

Parameters:

idx - Indexing.

tbl - Table.

type - Type descriptor.

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.

Returns:

indexing.

type

public GridQueryTypeDescriptor type()

Gets type descriptor.

Returns:

Type descriptor.

context

public GridCacheContext<?,?> context()

Gets cache context for this row descriptor.

Returns:

Cache context.

wrap

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

Wraps object to respective Value.

Parameters:

obj - Object.

type - Value type.

Returns:

Value.

Throws:

IgniteCheckedException - If failed.

createRow

public GridH2Row createRow(CacheDataRow dataRow)
                    throws IgniteCheckedException

Creates new row.

Parameters:

dataRow - Data row.

Returns:

Row.

Throws:

IgniteCheckedException - If failed.

valueType

public int valueType()

Returns:

Value type.

fieldsCount

public int fieldsCount()

Returns:

Total fields count.

fieldType

public int fieldType(int col)

Gets value type for column index.

Parameters:

col - Column index.

Returns:

Value type.

columnValue

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

Gets column value by column index.

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.

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.

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.

Parameters:

colId - Column id.

Returns:

Result.

isKeyAliasColumn

public boolean isKeyAliasColumn(int colId)

Checks if provided column id matches key alias column.

Parameters:

colId - Column id.

Returns:

Result.

isValueColumn

public boolean isValueColumn(int colId)

Checks if provided column id matches value column or alias.

Parameters:

colId - Column id.

Returns:

Result.

isValueAliasColumn

public boolean isValueAliasColumn(int colId)

Checks if provided column id matches value alias column.

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.

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.

Parameters:

masks - Array containing Index Condition masks for each column.

mask - Index Condition to check.

Returns:

Result.

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.

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.

Parameters:

colId - Column id.

Returns:

Result.