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

Class DmlUtils

java.lang.Object

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

public class DmlUtils
extends Object

DML utility methods.

Method Summary

Modifier and Type	Method	Description
static SQLException	chainException(SQLException main, SQLException add)	Adds exception to the chain.
static Object	convert(Object val, GridQueryRowDescriptor desc, Class<?> expCls, int type, String columnName)	Convert value to column's expected type by means of H2.
static boolean	isBatched(SqlFieldsQuery qry)	Check whether query is batched.
static UpdateResult	processSelectResult(UpdatePlan plan, Iterable<List<?>> cursor, int pageSize)
static List<UpdateResult>	processSelectResultBatched(UpdatePlan plan, List<List<List<?>>> rows, int pageSize)	Performs the planned update.
static void	restoreKeepBinaryContext(GridCacheContext<?,?> cctx, CacheOperationContext oldOpCtx)	Restore previous binary context.
static CacheOperationContext	setKeepBinaryContext(GridCacheContext<?,?> cctx)	Makes current operation context as keepBinary.

Methods inherited from class java.lang.Object

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

Method Detail

convert

public static Object convert(Object val,
                             GridQueryRowDescriptor desc,
                             Class<?> expCls,
                             int type,
                             String columnName)

Convert value to column's expected type by means of H2.

Parameters:

val - Source value.

desc - Row descriptor.

expCls - Expected value class.

type - Expected column type to convert to.

Returns:

Converted object.

isBatched

public static boolean isBatched(SqlFieldsQuery qry)

Check whether query is batched.

Parameters:

qry - Query.

Returns:

True if batched.

processSelectResult

public static UpdateResult processSelectResult(UpdatePlan plan,
                                               Iterable<List<?>> cursor,
                                               int pageSize)
                                        throws IgniteCheckedException

Parameters:

plan - Update plan.

cursor - Cursor over select results.

pageSize - Page size.

Returns:

Pair [number of successfully processed items; keys that have failed to be processed]

Throws:

IgniteCheckedException - if failed.

processSelectResultBatched

public static List<UpdateResult> processSelectResultBatched(UpdatePlan plan,
                                                            List<List<List<?>>> rows,
                                                            int pageSize)
                                                     throws IgniteCheckedException

Performs the planned update.

Parameters:

plan - Update plan.

rows - Rows to update.

pageSize - Page size.

Returns:

List of update results.

Throws:

IgniteCheckedException - If failed.

chainException

public static SQLException chainException(SQLException main,
                                          SQLException add)

Adds exception to the chain.

Parameters:

main - Exception to add another exception to.

add - Exception which should be added to chain.

Returns:

Chained exception.

setKeepBinaryContext

public static CacheOperationContext setKeepBinaryContext(GridCacheContext<?,?> cctx)

Makes current operation context as keepBinary.

Parameters:

cctx - Cache context.

Returns:

Old operation context.

restoreKeepBinaryContext

public static void restoreKeepBinaryContext(GridCacheContext<?,?> cctx,
                                            CacheOperationContext oldOpCtx)

Restore previous binary context.

Parameters:

cctx - Cache context.

oldOpCtx - Old operation context.