Package org.apache.jackrabbit.oak.query

Enum QueryEngineImpl.QuerySelectionMode

java.lang.Object

java.lang.Enum<QueryEngineImpl.QuerySelectionMode>

org.apache.jackrabbit.oak.query.QueryEngineImpl.QuerySelectionMode

All Implemented Interfaces:

Serializable, Comparable<QueryEngineImpl.QuerySelectionMode>

Enclosing class:

QueryEngineImpl

public static enum QueryEngineImpl.QuerySelectionMode
extends Enum<QueryEngineImpl.QuerySelectionMode>

Used to instruct the QueryEngineImpl on how to act with respect of the SQL2 optimisation.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ALTERNATIVE	Will force the computed alternate query to be executed.
CHEAPEST	Will execute the cheapest (default).
ORIGINAL	Will use the original SQL2 query.

Method Summary

Modifier and Type	Method	Description
static QueryEngineImpl.QuerySelectionMode	valueOf(String name)	Returns the enum constant of this type with the specified name.
static QueryEngineImpl.QuerySelectionMode[]	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, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

CHEAPEST

public static final QueryEngineImpl.QuerySelectionMode CHEAPEST

Will execute the cheapest (default).

ORIGINAL

public static final QueryEngineImpl.QuerySelectionMode ORIGINAL

Will use the original SQL2 query.

ALTERNATIVE

public static final QueryEngineImpl.QuerySelectionMode ALTERNATIVE

Will force the computed alternate query to be executed. If available.

Method Detail

values

public static QueryEngineImpl.QuerySelectionMode[] 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 (QueryEngineImpl.QuerySelectionMode c : QueryEngineImpl.QuerySelectionMode.values())
    System.out.println(c);

Returns:

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

valueOf

public static QueryEngineImpl.QuerySelectionMode 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