com.walmart.openapi
Class DataFeedManager

java.lang.Object
  com.walmart.openapi.DataFeedManager

public class DataFeedManager
extends java.lang.Object

Feed manager lets you iterate over the items in data feeds. We choose the Iterator pattern because the category feeds/full feeds for some of the categories are really huge(>1GB) and cannot be loaded in memory for analysis. Note : It does not cache the result locally i.e on successive runs it makes a network call to download the feeds again from the open api end points.

Nested Class Summary

static class	DataFeedManager.FeedIterator Reads a JsonParser to extract a list of items and then closes the socket.
static class	DataFeedManager.FeedsType

Constructor Summary

DataFeedManager(java.lang.String apiKey)

Method Summary

DataFeedManager.FeedIterator	getFeedIterator(DataFeedManager.FeedsType feedsType) Return the iterator for the entire feed.
DataFeedManager.FeedIterator	getFeedIterator(DataFeedManager.FeedsType feedsType, java.lang.String categoryId) Open a connection to the server, unzip the stream and then create a JsonParser.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataFeedManager

public DataFeedManager(java.lang.String apiKey)

Method Detail

getFeedIterator

public DataFeedManager.FeedIterator getFeedIterator(DataFeedManager.FeedsType feedsType)
                                             throws java.lang.Exception

Return the iterator for the entire feed. Note : Walmart catalog has millions of items.

Parameters:

feedsType -

Returns:

Throws:

java.lang.Exception

getFeedIterator

public DataFeedManager.FeedIterator getFeedIterator(DataFeedManager.FeedsType feedsType,
                                                    java.lang.String categoryId)
                                             throws java.lang.Exception

Open a connection to the server, unzip the stream and then create a JsonParser.

Parameters:

feedsType - Type of feed eg. specialbuys, rollbacks, etc

categoryId - category id for which the iterator is requested.

Returns:

Returns iterator which supports hasNext() and next() methods to parse the feed.

Throws:

java.lang.Exception