tengine:api

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tengine:api [2022/06/09 01:15] – twinnytengine:api [2023/04/23 06:35] (current) – twinny
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 ===== API Documentation ===== ===== API Documentation =====
 +
 +( I accidentally nuked all documentation so It's currently being rebuilt! May be some missing parts of old/invalid details )
  
 This page provides details on how you can use TEngine via API calls This page provides details on how you can use TEngine via API calls
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 === Arguments === === Arguments ===
 +
 <code javascript> <code javascript>
 { {
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   pk=STRING   pk=STRING
   sk=STRING  (optional)   sk=STRING  (optional)
-  +
   indexes={   indexes={
     "string"={     "string"={
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     }     }
   } (optional)   } (optional)
-   +
 } }
 +
 </code> </code>
  
 === Return Format === === Return Format ===
 +
 <code javascript> <code javascript>
 { {
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   success=BOOLEAN   success=BOOLEAN
 } }
 +
 </code> </code>
  
 === Example Request === === Example Request ===
 +
 <code javascript> <code javascript>
   temp.req = {};   temp.req = {};
- +
   // Create a base table and two indexes   // Create a base table and two indexes
   // pk is mandatory, sk is optional   // pk is mandatory, sk is optional
- +
   temp.req.tablename = "player-test";   temp.req.tablename = "player-test";
   temp.req.pk = "account";   temp.req.pk = "account";
   temp.req.sk = "sort";   temp.req.sk = "sort";
- +
   temp.req.indexes = {};   temp.req.indexes = {};
- +
   temp.req.indexes.house_index = {};   temp.req.indexes.house_index = {};
   temp.req.indexes.house_index.pk = "housetype";   temp.req.indexes.house_index.pk = "housetype";
   temp.req.indexes.house_index.sk = "housesubtype";   temp.req.indexes.house_index.sk = "housesubtype";
- +
   temp.req.indexes.location_index = {};   temp.req.indexes.location_index = {};
   temp.req.indexes.location_index.pk = "location";   temp.req.indexes.location_index.pk = "location";
-  + 
-  //create table +  //create table
   temp.r = TEngine.createtable(temp.req);   temp.r = TEngine.createtable(temp.req);
   if (temp.r.error) {   if (temp.r.error) {
     printf("[TEngine Error]: %s", temp.r.error);     printf("[TEngine Error]: %s", temp.r.error);
-  } +  } 
 </code> </code>
  
 === Example Return === === Example Return ===
 +
 <code javascript> <code javascript>
 { {
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    "error": ""    "error": ""
 } }
 +
 </code> </code>
  
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   }   }
 } }
 +
 </code> </code>
  
 === Return Format === === Return Format ===
 +
 <code javascript> <code javascript>
 { {
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   result=OBJECT   result=OBJECT
 } }
 +
 </code> </code>
  
 === Example Request === === Example Request ===
 +
 <code javascript> <code javascript>
   temp.req = {};   temp.req = {};
   temp.req.tablename = "player-test";   temp.req.tablename = "player-test";
- +
   temp.req.keys.account = "Jane";   temp.req.keys.account = "Jane";
   temp.req.keys.sort = "housedata";   temp.req.keys.sort = "housedata";
- +
   temp.r = TEngine.get(temp.req);   temp.r = TEngine.get(temp.req);
   if (temp.r.error) {   if (temp.r.error) {
     printf("[TEngine Error]: %s", temp.r.error);     printf("[TEngine Error]: %s", temp.r.error);
   }   }
 +
 </code> </code>
  
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    "result": {"sample":"data"}    "result": {"sample":"data"}
 } }
 +
 </code> </code>
  
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 Queries can be made either on the base table or an index. It must be made on a partition key but the sort key is optional, even if the table is configured with a sort key. When the table/index only has a partition key, the single item with the matching partition key will be returned. If the table/index is configured with a partition key and sort key, it can provide every single item which matches the partition key. You can provide the sort key to return items matching the partiyion key and sort key (note that in an index, this can be multiple items) Queries can be made either on the base table or an index. It must be made on a partition key but the sort key is optional, even if the table is configured with a sort key. When the table/index only has a partition key, the single item with the matching partition key will be returned. If the table/index is configured with a partition key and sort key, it can provide every single item which matches the partition key. You can provide the sort key to return items matching the partiyion key and sort key (note that in an index, this can be multiple items)
  
-You can also opt to provide conditions which will be tested on the sort key. Each condition will be tested and the item will only be returned if true to all conditions. +You can also opt to provide conditions which will be tested on the sort key. Each condition will be tested and the item will only be returned if true to all conditions.
  
 Conditions include Conditions include
-begins_with - the sort key begins with the provided string + 
-* > - the sort key is greater than the provided value (Note: compared as a string) +  * begins_with - the sort key begins with the provided string 
-* < - the sort key is less than the provided value (Note: compared as a string)+  * > - the sort key is greater than the provided value (Note: compared as a string) 
 +  * < - the sort key is less than the provided value (Note: compared as a string)
  
 Consider this table with the following items: Consider this table with the following items:
 +
 +<code>
 ... ...
 {pk: "item1", sk: "sort_19"} {pk: "item1", sk: "sort_19"}
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 {pk: "item1", sk: "sort_24"} {pk: "item1", sk: "sort_24"}
 ... ...
 +
 +</code>
  
 Example queries: Example queries:
  
-pk == item1 : will return all 6 items  +  * pk == item1 : will return all 6 items 
-pk == item1 and sk == "sort_20" : will return the single matching item+  * pk == item1 and sk == "sort_20" : will return the single matching item
  
-pk == item1 and sk begins_with "sort_2" : will return the 5 items where sk starts with sort_2 +  * pk == item1 and sk begins_with "sort_2" : will return the 5 items where sk starts with sort_2 
-pk == item1 and sk > sort_23 : will return just sort_24 since it's the only item > 23+  * pk == item1 and sk > sort_23 : will return just sort_24 since it's the only item > 23
  
 === Argument Format === === Argument Format ===
 +
 <code javascript> <code javascript>
 { {
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     "string"=STRING     "string"=STRING
   }   }
 +  sortorder="ASC"/"DESC" - set the sort order to be returned. ASC by default. Note this is sorted by string value: not numeric
 +  startat=INTEGER - if set, skips the number of items configured here before potentially read and returning items. Useful for pagination
 +  limit=INTEGER - if set, limits the number of read/returned items. Useful for pagination
 +  conditions=ARRAY of ARRAYS e.g. {  {"begins_with", "sort_"}, {">", "sort_5"}, {"<", "sort_15"} }
 } }
 +
 </code> </code>
  
 +=== Return Format ===
 +
 +<code javascript>
 +{
 +  result=[KEYS,DATA]
 +  success=BOOLEAN
 +  readcount=INTEGER  - how many items were read and returned (after limit, startat, conditions)
 +  foundcount=INTEGER - how many items were intiially found
 +  error=STRING
 +}
 +
 +</code>
 +
 +=== Example Request ===
 +
 +<code javascript>
 +tbd
 +
 +</code>
 +
 +=== Example Return ===
 +
 +<code javascript>
 +tbd
 +
 +</code>
  
 ==== Put / Update ==== ==== Put / Update ====
  
-Both methods use the same underlying method but the difference is: \\ +Both methods use the same underlying method but the difference is: \\ **Put**: will either replace an existing item with the request or create a new item if it does not exist \\ **Update**: will either update an existing item with the request or create a new item if it does not exist
-**Put**: will either replace an existing item with the request or create a new item if it does not exist \\ +
-**Update**: will either update an existing item with the request or create a new item if it does not exist \\+
  
 If the item matches any indexes in the table, the item will automatically be added to the index. If the item was previously in the index but no longer matches, it will be removed. If the item matches any indexes in the table, the item will automatically be added to the index. If the item was previously in the index but no longer matches, it will be removed.
- 
  
 === Argument Format === === Argument Format ===
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   tablename=STRING   tablename=STRING
   keys = {   keys = {
-    "string"=STRING +    "string"=STRING
   }   }
   data = {   data = {
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   }   }
 } }
 +
 </code> </code>
  
 === Return Format === === Return Format ===
 +
 <code javascript> <code javascript>
 { {
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   success=BOOLEAN   success=BOOLEAN
 } }
 +
 </code> </code>
  
 === Example Request === === Example Request ===
 +
 <code javascript> <code javascript>
   temp.req = {};   temp.req = {};
   temp.req.keys.account = "Jane";   temp.req.keys.account = "Jane";
   temp.req.keys.sort = "housedata";   temp.req.keys.sort = "housedata";
- +
   temp.req.data.housetype="house1";   temp.req.data.housetype="house1";
   temp.req.data.housesubtype="a1";   temp.req.data.housesubtype="a1";
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     printf("[TEngine Error]: %s", temp.r.error);     printf("[TEngine Error]: %s", temp.r.error);
   }   }
 +
 </code> </code>
  
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    "error": ""    "error": ""
 } }
 +
 </code> </code>
  
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 === Argument Format === === Argument Format ===
 +
 <code javascript> <code javascript>
 { {
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   }   }
 } }
 +
 </code> </code>
  
 === Return Format === === Return Format ===
 +
 <code javascript> <code javascript>
 { {
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   success=BOOLEAN   success=BOOLEAN
 } }
 +
 </code> </code>
  
 === Example Request === === Example Request ===
 +
 <code javascript> <code javascript>
   temp.req = {};   temp.req = {};
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     printf("[TEngine Error]: %s", temp.r.error);     printf("[TEngine Error]: %s", temp.r.error);
   }   }
 +
 </code> </code>
  
 === Example Return === === Example Return ===
 +
 <code javascript> <code javascript>
 { {
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    "error": ""    "error": ""
 } }
 +
 </code> </code>
 +
 +==== ListTables ====
 +
 +tbd
 +
 +==== DescribeTable ====
 +
 +tbd
 +
 +----
  
 ~~DISCUSSION~~ ~~DISCUSSION~~
 +
 +
  • tengine/api.1654737340.txt.gz
  • Last modified: 2022/06/09 01:15
  • by twinny