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    The MongoDB\Driver\TopologyDescription class

    (mongodb >=1.13.0)

    简介

    The MongoDB\Driver\TopologyDescription class is a value object that represents a topology to which the driver is connected. Instances of this class are returned by MongoDB\Driver\Monitoring\TopologyChangedEvent methods.

    类摘要

    final class MongoDB\Driver\TopologyDescription {
    /* 常量 */
    const string TYPE_UNKNOWN = "Unknown";
    const string TYPE_SINGLE = "Single";
    const string TYPE_SHARDED = "Sharded";
    const string TYPE_REPLICA_SET_NO_PRIMARY = "ReplicaSetNoPrimary";
    const string TYPE_REPLICA_SET_WITH_PRIMARY = "ReplicaSetWithPrimary";
    const string TYPE_LOAD_BALANCED = "LoadBalanced";
    /* 方法 */
    final public getServers(): array
    final public getType(): string
    final public hasReadableServer(?MongoDB\Driver\ReadPreference $readPreference = null): bool
    final public hasWritableServer(): bool
    }

    预定义常量

    MongoDB\Driver\TopologyDescription::TYPE_UNKNOWN

    Unknown topology type, returned by MongoDB\Driver\TopologyDescription::getType().

    MongoDB\Driver\TopologyDescription::TYPE_SINGLE

    Single server (i.e. direct connection), returned by MongoDB\Driver\TopologyDescription::getType().

    MongoDB\Driver\TopologyDescription::TYPE_SHARDED

    Sharded cluster, returned by MongoDB\Driver\TopologyDescription::getType().

    MongoDB\Driver\TopologyDescription::TYPE_REPLICA_SET_NO_PRIMARY

    Replica set with no primary server, returned by MongoDB\Driver\TopologyDescription::getType().

    MongoDB\Driver\TopologyDescription::TYPE_REPLICA_SET_WITH_PRIMARY

    Replica set with a primary server, returned by MongoDB\Driver\TopologyDescription::getType().

    MongoDB\Driver\TopologyDescription::TYPE_LOAD_BALANCED

    Load balanced topology, returned by MongoDB\Driver\TopologyDescription::getType().

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