com.aerospike.client.policy

Enum QueryDuration

java.lang.Object

java.lang.Enum<QueryDuration>

com.aerospike.client.policy.QueryDuration

All Implemented Interfaces:

Serializable, Comparable<QueryDuration>

public enum QueryDuration
extends Enum<QueryDuration>

Expected query duration. The server treats the query in different ways depending on the expected duration. This enum is ignored for aggregation queries, background queries and server versions < 6.0.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LONG The query is expected to return more than 100 records per node.
LONG_RELAX_AP Treat query as a LONG query, but relax read consistency for AP namespaces.
SHORT The query is expected to return less than 100 records per node.

Method Summary

Modifier and Type	Method and Description
static QueryDuration	valueOf(String name) Returns the enum constant of this type with the specified name.
static QueryDuration[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

LONG

public static final QueryDuration LONG

The query is expected to return more than 100 records per node. The server optimizes for a large record set in the following ways:

• Allow query to be run in multiple threads using the server's query threading configuration.
• Do not relax read consistency for AP namespaces.
• Add the query to the server's query monitor.
• Do not add the overall latency to the server's latency histogram.
• Do not allow server timeouts.

SHORT

public static final QueryDuration SHORT

The query is expected to return less than 100 records per node. The server optimizes for a small record set in the following ways:

• Always run the query in one thread and ignore the server's query threading configuration.
• Allow query to be inlined directly on the server's service thread.
• Relax read consistency for AP namespaces.
• Do not add the query to the server's query monitor.
• Add the overall latency to the server's latency histogram.
• Allow server timeouts. The default server timeout for a short query is 1 second.

LONG_RELAX_AP

public static final QueryDuration LONG_RELAX_AP

Treat query as a LONG query, but relax read consistency for AP namespaces. This value is treated exactly like LONG for server versions < 7.1.

Method Detail

values

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

Returns:

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

valueOf

public static QueryDuration 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