Package com.gigaspaces.client

Class CountModifiers

java.lang.Object

com.gigaspaces.client.SpaceProxyOperationModifiers

com.gigaspaces.client.IsolationLevelModifiers

com.gigaspaces.client.CountModifiers

All Implemented Interfaces:

SmartExternalizable, Externalizable, Serializable

public class CountModifiers
extends IsolationLevelModifiers

Provides modifiers to customize the behavior of count operations.

Since:

9.0.1

Author:

Niv Ingberg

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final CountModifiers	DIRTY_READ	When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is ignored and matching is performed on the uncommitted state.
static final CountModifiers	EXCLUSIVE_READ_LOCK	The resulting entries are locked, blocking update/remove from other transactions.
static final CountModifiers	MEMORY_ONLY_SEARCH	Search for matching entries in cache memory only (do not use the underlying EDS).
static final CountModifiers	NONE	Empty - use operation default behavior.
static final CountModifiers	READ_COMMITTED	When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is honored and matching is performed on the committed state.
static final CountModifiers	REPEATABLE_READ	When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is honored and the entry is skipped (if the operation is invoked with a timeout it will block until the entry will be released or the timeout expires).

Constructor Summary

Constructors

Constructor	Description
CountModifiers()	Required for Externalizable
CountModifiers(CountModifiers... modifiers)	Creates a new modifiers from the specified modifiers.
CountModifiers(CountModifiers modifiers1, CountModifiers modifiers2)	Creates a new modifiers from the specified modifiers.
CountModifiers(CountModifiers modifiers1, CountModifiers modifiers2, CountModifiers modifiers3)	Creates a new modifiers from the specified modifiers.

Method Summary

Modifier and Type	Method	Description
CountModifiers	add(CountModifiers modifiers)	Creates a new modifiers instance which is a union of the specified modifiers and this instance.
boolean	contains(CountModifiers modifiers)	Checks if the specified modifier is set.
protected CountModifiers	create(int modifiers)
protected Map<Integer,SpaceProxyOperationModifiers>	getCache()
boolean	isExclusiveReadLock()	Checks if this instance contains the EXCLUSIVE_READ_LOCK setting.
boolean	isMemoryOnlySearch()	Checks if this instance contains the MEMORY_ONLY_SEARCH setting.
CountModifiers	remove(CountModifiers modifiers)	Creates a new modifiers instance which excludes the specified modifiers from this instance.
CountModifiers	setIsolationLevel(CountModifiers isolationLevel)	Creates a new modifiers instance with the specified isolation level set and any other isolation level unset.

Methods inherited from class com.gigaspaces.client.IsolationLevelModifiers

isDirtyRead, isReadCommitted, isRepeatableRead, setIsolationLevel

Methods inherited from class com.gigaspaces.client.SpaceProxyOperationModifiers

add, contains, createIfNeeded, equals, getCode, hashCode, readExternal, remove, writeExternal

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.gigaspaces.serialization.SmartExternalizable

enabledSmartExternalizableWithReference

Field Details

NONE

public static final CountModifiers NONE

Empty - use operation default behavior.

REPEATABLE_READ

public static final CountModifiers REPEATABLE_READ

When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is honored and the entry is skipped (if the operation is invoked with a timeout it will block until the entry will be released or the timeout expires). If the operation is invoked in a transactional context, the resulting entries will be locked, blocking update/remove from other transactions.

READ_COMMITTED

public static final CountModifiers READ_COMMITTED

When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is honored and matching is performed on the committed state.

DIRTY_READ

public static final CountModifiers DIRTY_READ

When a search for matching entries encounters an entry locked under a different uncommitted transaction, the lock is ignored and matching is performed on the uncommitted state.

EXCLUSIVE_READ_LOCK

public static final CountModifiers EXCLUSIVE_READ_LOCK

The resulting entries are locked, blocking update/remove from other transactions.

MEMORY_ONLY_SEARCH

public static final CountModifiers MEMORY_ONLY_SEARCH

Search for matching entries in cache memory only (do not use the underlying EDS).

Constructor Details

CountModifiers

public CountModifiers()

Required for Externalizable

CountModifiers

public CountModifiers(CountModifiers modifiers1,
 CountModifiers modifiers2)

Creates a new modifiers from the specified modifiers.

CountModifiers

public CountModifiers(CountModifiers modifiers1,
 CountModifiers modifiers2,
 CountModifiers modifiers3)

Creates a new modifiers from the specified modifiers.

CountModifiers

public CountModifiers(CountModifiers... modifiers)

Creates a new modifiers from the specified modifiers.

Method Details

contains

public boolean contains(CountModifiers modifiers)

Checks if the specified modifier is set.

Returns:

true if the specified modifier is set, false otherwise.

add

public CountModifiers add(CountModifiers modifiers)

Creates a new modifiers instance which is a union of the specified modifiers and this instance.

Parameters:

modifiers - Modifiers to add.

Returns:

A union of the current modifiers and the specified modifiers.

remove

public CountModifiers remove(CountModifiers modifiers)

Creates a new modifiers instance which excludes the specified modifiers from this instance.

Parameters:

modifiers - Modifiers to remove.

Returns:

The modifiers from this instance without the modifiers from the specified instance.

setIsolationLevel

public CountModifiers setIsolationLevel(CountModifiers isolationLevel)

Creates a new modifiers instance with the specified isolation level set and any other isolation level unset.

Parameters:

isolationLevel - The isolation level to set.

Returns:

The modifiers from this instance with the new isolation level set and any previous one removed.

isExclusiveReadLock

public boolean isExclusiveReadLock()

Checks if this instance contains the EXCLUSIVE_READ_LOCK setting.

Returns:

true if this instance contains the EXCLUSIVE_READ_LOCK setting, false otherwise.

isMemoryOnlySearch

public boolean isMemoryOnlySearch()

Checks if this instance contains the MEMORY_ONLY_SEARCH setting.

Returns:

true if this instance contains the MEMORY_ONLY_SEARCH setting, false otherwise.

create

protected CountModifiers create(int modifiers)

Specified by:

create in class SpaceProxyOperationModifiers

getCache

protected Map<Integer,SpaceProxyOperationModifiers> getCache()

Specified by:

getCache in class SpaceProxyOperationModifiers