Image
EAN-13	9780756684075
Product Name	Dk Eyewitness Travel Guide: London
Category	Book / Magazine / Publication
Short Description	Height:1.06 inches / Length:8.53 inches / Weight:1.64 pounds / Width:5.24 inches
Amazon.com	Buy on Amazon ~ 0756684072
SKU	ACAMP_BOOK_NEW_0756684072
Price New	18.00 US Dollars    (curriencies)
Price Used	0.01 US Dollars    (curriencies)
Width	0.93 inches    (convert)
Height	8.7 inches    (convert)
Length	5.3 inches    (convert)
Weight	26.24 ounces    (convert)
Author	Roger Williams, Lisa Ritchie, DK Publishing
Page Count	448
Binding	Paperback
Published	02/13/2012
Long Description	Packed with photographs, illustrations, and maps, Eyewitness Travel Guide: London includes in-depth coverage of London's unforgettable sights from the Houses of Parliament and Buckingham Palace to the trendy piazza of Covent Garden. Unearthing the best of the city's stunning architecture, palaces and parks, west-end musicals, world-class art galleries and museums in between, there are 3D aerial views of London's most interesting districts, cutaways and floor-plans of all the major sites, and detailed listings of the best hotels and restaurants in London for all budgets. The guide includes four 'Great Days Out' and extensive practical information including insider tips on where to find London's best shops and markets, traditional pubs and the goldmine of fun to be found for children. Whether you're taking a thrilling 'flight' on the London Eye or gazing at the crown jewels at the Tower of London, there is detailed background on everything from Kings and Queens to where to see Roman, Medieval, Elizabethan and Victorian London as well as several guided walks of varied character.
Similar Items	9780789493859: Great Britain (Eyewitness Travel Guides) 9780708848876: DK Eyewitness Travel Guide: Great Britain 9780676901757: Dk Eyewitness Travel Guide: Great Britain 9781902910208: Museums & Galleries Of London 9781162802824: Dk Eyewitness Travel Guide: Great Britain 9781612386690: Rick Steves' London 2014 9781465400505: Dk Eyewitness Travel Guide: Paris 9781141495757: Dk Eyewitness Travel Guide: Paris 9780935039276: Streetwise London Map - Laminated City Center Street Map Of London, England 9781780050706: London (City Guide) View 30 more similar items
Created	11-19-2012 10:01:56am
Modified	02-28-2017 5:01:32pm
MD5	9e3ebc772efd32852e36e424c44184a7
SHA256	ec70ed561bf4a04237bb6197c6cfa566dff21f0815d1c0d74872e2780c28f38d
Search Google	by EAN or by Title
Query Time	0.0197420

Article of interest

This describes how to use version 3.x of the data feed. Version 2.x of the feed is still supported. Version 1.x of the feed is no longer supported in any way.

IMPORTANT: Starting with version 3.2, we have a new property and a new way of dealing with product images. Read about it here.

Accessing the data requires your account to have an active data feed. This switch can be turned on or off on the data feed page. This is also where you will be able to view your KEYCODE which is required to make calls to the feed.

Main changes from version 2.x to 3.x include (but not limited to)...

• The URL has changed /feed.php is now /feed/ (visit the data feed page for examples)
• The version number needs to be included in our request
• Much more control over the data you get back from your request
• New properties have been added with the flexibility for more to come over time

Calls to the data feed are made via HTTP GET or HTTP POST requests. There are only a few required parameters when making a call.

• keycode : 16 digit code (your app doesn't need to log in, it only needs the keycode)
• mode : json or xml
• V : 3 (if you omit this, the feed will fall back to v2.1)

Most other parameters are optional and they will alter the way data is returned to you and how your request is processed. You can also pass in your own values that you need carried through. Any parameter that the system doesn't recognize will be returned AS-IS in the status block. This can be handy in situations where you are pulling the data in an asyncronus manor and need extra information passed into your callback routine.

When performing a lookup...

• find : 8, 12 or 13 digits to search for (REQUIRED)
• comp : yes/no - if "no" skip the company lookup (defaults to "yes")
• pending : yes/no - if "yes" pending updates may be returned, otherwise only verified information is returned (defaults to "yes")
• get : what you want returned. "any" will return only the fields that have data and skip blank fields. "all" will return all available fields even if they are blank. You may also specify a specific list of fields to be returned and they will come back even if there is no data to fill them. (defaults to "any")
• has : you can provide any valid field name that you might use in the "get" property (except for all and any of course). when used, rather than getting back the actual field data, you get back a property with the same name prefixed with "has_" that contains either 0 (zero) or 1 (one) to let you know if data exists or not. This is most handy if you don't want to pull large blocks of data unless needed. For example the long description or company block.
• field_mod : yes/no - if "yes" the modified date for each field is returned in addition to the modified date of the over all product. (defaults to "no")
• search : normal/deep - if this is omitted or any unexpected value, a normal search will be performed. A deep search  will take longer than a normal search. Our web bots will make an effort to locate more information about the product. This only happens if we have no information on file already. This can take a couple extra seconds or up to a minute. Your app needs to be able to deal with this delay. (defaults to normal) NOTE: This is a premium feature. If you don't have a paid data feed, this will be forced to normal mode.

When updating data...

• update : 8, 12 or 13 digits to search for (REQUIRED)
• field : The product field to update  (REQUIRED) [sorry, no company updates allows]
• value : The new value (REQUIRED) [will go into a pending area until validated]
• extra_id : Some fields use 2 fields to store the data. One being a numeric value and the second being a descriptor [such as a ounces, gallons, quarts] This extra value  must match the list we keep in our database. You can include the text version of this extra information at the end of the "value" field but it still needs to match what we have. You can also split the value into two fields the way we do passing the number in the "value" field and the descriptor as an index id in this "extra_id" field. For more information, see the "get=extra" section just below.
  
  
• Only products information can be updated (no company info)
• Only update one field per request
• Update may be ignored if other pending updates exist
• Error result status is returned if updating a locked product
• To upload product images, see this blog article.

There are some special "get" operations that need no other parameters. You would not use "find" or "update" when using these. Only use the "keycode", "mode" and "get" for these items. These operations are important because many of our elements are data driven and that data changes over time. We normally don't remove attributes or categories but we do often add to the collection.

• get=categories : This will return a list of all the product categories currently available on the system.
• get=attributes : This will return a list of all of the product attributes that are currently available. (more info)
• get=extra : This will return the extra values attached to fields. You can include include the field name field=???? if you want the extra information for a specific field. (more info)

The returned data can come back in JSON or XML format. In either case the structure of the data is the same. Because it is easier to read, we will be using XML to demonstrate the layout of the result. Here is the data layout. Notice that this is a complex object and some elements have child elements and some elements may be arrays with repeating content.

• status : This is returned after every call. It is important to investigate this section to make sure your request was properly processed.
  
  • code : Always returned. Any value other than 200 indicates a problem.
  • message : Always returned. This may be checked any time but should be checked when code is anything other than 200 to get more information about the problem.
  • version : The current feed version being used to process your request. Only returned for "find" requests. This is not relevent for other requests.
  • run : The number of seconds your request took. Only returned for "find" requests.
  • find : What you were searching for during a "find" request.
  • update : The product code you were trying to update during an "update" request.
• product : Only returned for "find" requests. What exactly is returned here depends on what you set the "get" parameter to in your call.
  
  • EAN13 : The 13 digit EAN code
  • UPCA : The 12 digit UPC-A code
  • UPCE : The 8 digit UPC-E code
  • ISBN10 : The 10 digit ISBN code (13 digit ISBN is the same as the EAN13)
  • image : A url that points to an image of the product.
  • modified : The date that the product was last modified.
  • locked : 0/1 Indicates if this product can be modified or not.
  • attributes : A collection attributes describing this product. The list of attributes can change and grow over time. Use the "get=attributes" request to see the full list
  • field_mod : A collection of modification dates that indicate when each individual attribute was last modified. Only attributes with non-blank values will have modified dates. The elements in this collection are the same as those for the "attributes" collection.
  • barcode : A collection of links to barcode images
    
    • EAN13 : URL to the EAN13 barcode
    • UPCA : URL to the UPC-A barcode
    • UPCE : URL to the UPC-E barcode
• company : Only returned for "find" requests.
  
  • name : Name of the company
  • address : Address for the company
  • phone : Telephone number for the company
  • url : URL to the company web site
  • logo : URL to the company logo
  • locked : 0/1 Indicates if this company can be modified or not. Please note, you can not modify a company using the feed at this time.
• category : This array is only returned for get=categories requests.
  
  • id : The unique numeric id for each category
  • parent_id : The id of the category just above this one (if any)
  • top_parent_id : The id of the root category this category belongs under
  • category : The text name of this category
  • cat_path : The text path showing all categories in the chain leading to this category
• attribute : This array is only returned for get=attributes requests. If you only want select attributes returned when you  make your "find" request, the field_name parameter will identify which items can be placed in your "get=" parameter.
  
  • field_name : The name of the data field
  • group_name : The group that the data field belongs in
  • title : The title of the field, often used as a label when displaying the data.
  • data_type : The type of data stored in this field.
  • data_type_description : A text description of the data type
  • has_linked_text : 0/1 indicating if this field has two matching fields by the same name with "_text" and "_text_long" appended. These are often used as text versions of the data stored in the field. For example the category field will contain a number, _text will contain the text version of the category and _text_long will contain the entire category path.
  • has_linked_extra : 0/1 indicating if this field has two matching fields by the same name with "_extra" and "_extra_long" appended. These are often used for measurements. For example, the field may contain the number 5.5 and the _extra field may contain "oz" and the _extra_long field may contain "ounces".

The easiest way to get the feel of the data is to make several requests using your web browser and ask for the data in XML format. Although JSON is often easier to work with in code, the XML output is often easier for people to read because of the nice markup tags that wrap around each element and the web browser will usually do a nice job of indenting to make it clear which elements are stored within other elements.