org.drools.runtime.conf
Enum QueryListenerOption

java.lang.Object
  java.lang.Enum<QueryListenerOption>
      org.drools.runtime.conf.QueryListenerOption

All Implemented Interfaces:

Serializable, Comparable<QueryListenerOption>, Option, KnowledgeSessionOption, SingleValueKnowledgeSessionOption

public enum QueryListenerOption
extends Enum<QueryListenerOption>
implements SingleValueKnowledgeSessionOption

An enum to configure the session query listener configuration. Query results are collected by a listener class. The "STANDARD" query listener class copies and disconnects fact handles and objects for query results, making them somewhat resilient to some working memory actions. But this copying is costly. For the cases where no concurrency exists between query execution and other working memory actions, a lightweight listener implementation can be used, preventing the copy and improving query performance significantly.

Enum Constant Summary

LIGHTWEIGHT

STANDARD

Field Summary

static String

PROPERTY_NAME The property name for the clock type configuration

Method Summary

static QueryListenerOption	determineQueryListenerClassOption(String option)
String	getAsString()
String	getPropertyName() Returns the property name for this option
String	toString()
static QueryListenerOption	valueOf(String name) Returns the enum constant of this type with the specified name.
static QueryListenerOption[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

STANDARD

public static final QueryListenerOption STANDARD

LIGHTWEIGHT

public static final QueryListenerOption LIGHTWEIGHT

Field Detail

PROPERTY_NAME

public static final String PROPERTY_NAME

The property name for the clock type configuration

See Also:

Constant Field Values

Method Detail

values

public static QueryListenerOption[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (QueryListenerOption c : QueryListenerOption.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static QueryListenerOption valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getPropertyName

public String getPropertyName()

Returns the property name for this option

Specified by:

getPropertyName in interface Option

Returns:

getAsString

public String getAsString()

toString

public String toString()

Overrides:

toString in class Enum<QueryListenerOption>

determineQueryListenerClassOption

public static QueryListenerOption determineQueryListenerClassOption(String option)