MONGODBDRIVERREADPREFERENCE(3) 1 MONGODBDRIVERREADPREFERENCE(3)The MongoDBDriverReadPreference class
INTRODUCTION CLASS SYNOPSIS
MongoDB.PP final
MongoDB.PP Constants
o const integer$MongoDB.TP 0.2i o const integer$MongoDB.TP 0.2i o const integer$MongoDB.TP 0.2i o const integer$MongoDB.TP 0.2i o const
integer$MongoDB.PP Methods
o finalpublic MongoDBDriverReadPreference::__construct (string $readPreference, [array $tagSets])
PREDEFINED CONSTANTS
o MongoDBDriverReadPreference::RP_PRIMARY -
o MongoDBDriverReadPreference::RP_PRIMARY_PREFERRED -
o MongoDBDriverReadPreference::RP_SECONDARY -
o MongoDBDriverReadPreference::RP_SECONDARY_PREFERRED -
o MongoDBDriverReadPreference::RP_NEAREST -
PHP Documentation Group MONGODBDRIVERREADPREFERENCE(3)
Check Out this Related Man Page
MongoDB::OID(3pm) User Contributed Perl Documentation MongoDB::OID(3pm)NAME
MongoDB::OID - A Mongo ObjectId
SYNOPSIS
If no "_id" field is provided when a document is inserted into the database, an "_id" field will be added with a new "MongoDB::OID" as its
value.
my $id = $collection->insert({'name' => 'Alice', age => 20});
$id will be a "MongoDB::OID" that can be used to retreive or update the saved document:
$collection->update({_id => $id}, {'age' => {'$inc' => 1}});
# now Alice is 21
To create a copy of an existing OID, you must set the value attribute in the constructor. For example:
my $id1 = MongoDB::OID->new;
my $id2 = MongoDB::OID->new(value => $id1->value);
Now $id1 and $id2 will have the same value.
Warning: at the moment, OID generation is not thread safe.
SEE ALSO
Core documentation on object ids: <http://dochub.mongodb.org/core/objectids>.
ATTRIBUTES
value
The OID value. A random value will be generated if none exists already. It is a 24-character hexidecimal string (12 bytes).
Its string representation is the 24-character string.
METHODS
to_string
my $hex = $oid->to_string;
Gets the value of this OID as a 24-digit hexidecimal string.
get_time
my $date = DateTime->from_epoch(epoch => $id->get_time);
Each OID contains a 4 bytes timestamp from when it was created. This method extracts the timestamp.
TO_JSON
my $json = JSON->new;
$json->allow_blessed;
$json->convert_blessed;
$json->encode(MongoDB::OID->new);
Returns a JSON string for this OID. This is compatible with the strict JSON representation used by MongoDB, that is, an OID with the value
"012345678901234567890123" will be represented as "{"$oid" : "012345678901234567890123"}".
AUTHOR
Kristina Chodorow <kristina@mongodb.org>
perl v5.14.2 2011-09-07 MongoDB::OID(3pm)
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