Net::Semantics3 is a Perl client for accessing the Semantics3 Products API, which provides structured information, including pricing histories, for a large number of products. See https://www.semantics3.com for more information.
Quickstart guide: https://www.semantics3.com/quickstart API documentation can be found at https://www.semantics3.com/docs/
Net::Semantics3 can be installed through the CPAN:
$ perl -MCPAN -e "install Net::Semantics3"
To build and install from the latest source:
$ git clone git@github.com:Semantics3/semantics3-perl.git
$ cd semantics3-perl
$ perl Makefile.PL
$ make
$ make test
$ make install
- LWP::UserAgent
- OAuth::Lite::Consumer
- JSON::XS
In order to use the client, you must have both an API key and an API secret. To obtain your key and secret, you need to first create an account at https://www.semantics3.com/ You can access your API access credentials from the user dashboard at https://www.semantics3.com/dashboard/applications
Let's lay the groundwork.
use Net::Semantics3::Products;
# Your Semantics3 API Credentials
my $api_key = "SEM3xxxxxxxxxxxxxxxxxxxxxx";
my $api_secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
# Set up a client to talk to the Semantics3 API
my $sem3 = Net::Semantics3::Products->new (
api_key => $api_key,
api_secret => $api_secret,
);Let's make our first query! For this query, we are going to search for all Toshiba products that fall under the category of "Computers and Accessories", whose cat_id is 4992.
# Build the query
$sem3->products_field( "cat_id", 4992 );
$sem3->products_field( "brand", "Toshiba" );
# Make the query
my $productsRef = $sem3->get_products();
# View the results of the query
print STDERR Dumper( $productsRef );The following examples show you how to interface with some of the core functionality of the Semantics3 Products API. For more detailed examples check out the Quickstart guide: https://www.semantics3.com/quickstart
In this example we are going to be accessing the categories endpoint. We are going to be specifically exploring the "Computers and Accessories" category, which has a cat_id of 4992. For more details regarding our category tree and associated cat_ids check out our API docs at https://www.semantics3.com/docs
# Build the query
$sem3->categories_field( "cat_id", 4992 );
# Make the query
my $categoriesRef = $sem3->get_categories();
# View the results of the query
print STDERR Dumper( $categoriesRef );You can construct complex queries by just repeatedly calling the products_field() or add() methods. Here is how we translate the following JSON query - '{"cat_id":4992,"brand":"Toshiba","weight":{"gte":1000000,"lt":1500000},"sitedetails":{"name":"newegg.com","latestoffers":{"currency":"USD","price":{"gte":100}}}}'.
This query returns all Toshiba products within a certain weight range narrowed down to just those that retailed recently on newegg.com for >= USD 100.
# Build the query
$sem3->products_field( "cat_id", 4992 );
$sem3->products_field( "brand", "Toshiba" );
$sem3->products_field( "weight", "gte", 1000000 );
$sem3->products_field( "weight", "lt", 1500000 );
$sem3->products_field( "sitedetails", "name", "newegg.com" );
$sem3->products_field( "sitedetails", "latestoffers", "currency", "USD" );
$sem3->products_field( "sitedetails", "latestoffers", "price", "gte", 100 );
# Let's make a modification - say we no longer want the weight attribute
$sem3->remove( "products", "weight", "gte" );
# Let's view the JSON query we just constructed. This is a good starting point to debug, if you are getting incorrect
# results for your query
my $constructedJson = $sem3->get_query_json( "products" );
print STDERR $constructedJson, "\n";
# Make the query
my $productsRef = $sem3->get_products();
# View the results of the query
print STDERR Dumper( $productsRef );Let's now look at doing pagination, continuing from where we stopped previously.
# Goto the next 'page'
my $page = 0;
while(my $productsRef = $sem3->iterate_products()) {
$page++;
print STDERR "We are at page = $page\n";
print STDERR "The results for this page are:\n";
print STDERR Dumper( $productsRef );
}
We shall use the add() method, which allows you to access any of the supported endpoints by just specifiying the name of the endpoint. add( "products", param1, param2, ...) is the equivalent of products_field( param1, param2, ... ), add( "offers", param1, param2, ... ) is the equivalent of offers_field( param1, param2, ...)
For this example, we are going to look at a particular product that is sold by select mercgants and whose price is >= USD 30 and seen after a specific date (specified as a UNIX timestamp).
# Build the query
$sem3->add( "offers", "sem3_id", "4znupRCkN6w2Q4Ke4s6sUC");
$sem3->add( "offers", "seller", ["LFleurs","Frys","Walmart"] );
$sem3->add( "offers", "currency", "USD");
$sem3->add( "offers", "price", "gte", 30);
$sem3->add( "offers", "lastrecorded_at", "gte", 1348654600);
# Make the query
my $offersRef = $sem3->get_offers();
#Alternatively we could also do
$offersRef = $sem3->get_results( "offers" );
# View the results of the query
print STDERR Dumper( $offersRef );Use GitHub's standard fork/commit/pull-request cycle. If you have any questions, email support@semantics3.com.
- Sivamani VARUN varun@semantics3.com
Copyright (c) 2013 Semantics3 Inc.
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