DynamoDB examples using SDK for SAP ABAP
The following code examples show you how to perform actions and implement common scenarios by using the Amazon SDK for SAP ABAP with DynamoDB.
Basics are code examples that show you how to perform the essential operations within a service.
Actions are code excerpts from larger programs and must be run in context. While actions show you how to call individual service functions, you can see actions in context in their related scenarios.
Each example includes a link to the complete source code, where you can find instructions on how to set up and run the code in context.
Basics
The following code example shows how to:
Create a table that can hold movie data.
Put, get, and update a single movie in the table.
Write movie data to the table from a sample JSON file.
Query for movies that were released in a given year.
Scan for movies that were released in a range of years.
Delete a movie from the table, then delete the table.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. " Create an Amazon Dynamo DB table. TRY. DATA(lo_session) = /aws1/cl_rt_session_aws=>create( cv_pfl ). DATA(lo_dyn) = /aws1/cl_dyn_factory=>create( lo_session ). DATA(lt_keyschema) = VALUE /aws1/cl_dynkeyschemaelement=>tt_keyschema( ( NEW /aws1/cl_dynkeyschemaelement( iv_attributename = 'year' iv_keytype = 'HASH' ) ) ( NEW /aws1/cl_dynkeyschemaelement( iv_attributename = 'title' iv_keytype = 'RANGE' ) ) ). DATA(lt_attributedefinitions) = VALUE /aws1/cl_dynattributedefn=>tt_attributedefinitions( ( NEW /aws1/cl_dynattributedefn( iv_attributename = 'year' iv_attributetype = 'N' ) ) ( NEW /aws1/cl_dynattributedefn( iv_attributename = 'title' iv_attributetype = 'S' ) ) ). " Adjust read/write capacities as desired. DATA(lo_dynprovthroughput) = NEW /aws1/cl_dynprovthroughput( iv_readcapacityunits = 5 iv_writecapacityunits = 5 ). DATA(oo_result) = lo_dyn->createtable( it_keyschema = lt_keyschema iv_tablename = iv_table_name it_attributedefinitions = lt_attributedefinitions io_provisionedthroughput = lo_dynprovthroughput ). " Table creation can take some time. Wait till table exists before returning. lo_dyn->get_waiter( )->tableexists( iv_max_wait_time = 200 iv_tablename = iv_table_name ). MESSAGE 'DynamoDB Table' && iv_table_name && 'created.' TYPE 'I'. " It throws exception if the table already exists. CATCH /aws1/cx_dynresourceinuseex INTO DATA(lo_resourceinuseex). DATA(lv_error) = |"{ lo_resourceinuseex->av_err_code }" - { lo_resourceinuseex->av_err_msg }|. MESSAGE lv_error TYPE 'E'. ENDTRY. " Describe table TRY. DATA(lo_table) = lo_dyn->describetable( iv_tablename = iv_table_name ). DATA(lv_tablename) = lo_table->get_table( )->ask_tablename( ). MESSAGE 'The table name is ' && lv_tablename TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table does not exist' TYPE 'E'. ENDTRY. " Put items into the table. TRY. DATA(lo_resp_putitem) = lo_dyn->putitem( iv_tablename = iv_table_name it_item = VALUE /aws1/cl_dynattributevalue=>tt_putiteminputattributemap( ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'title' value = NEW /aws1/cl_dynattributevalue( iv_s = 'Jaws' ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'year' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '1975' }| ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'rating' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '7.5' }| ) ) ) ) ). lo_resp_putitem = lo_dyn->putitem( iv_tablename = iv_table_name it_item = VALUE /aws1/cl_dynattributevalue=>tt_putiteminputattributemap( ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'title' value = NEW /aws1/cl_dynattributevalue( iv_s = 'Star Wars' ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'year' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '1978' }| ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'rating' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '8.1' }| ) ) ) ) ). lo_resp_putitem = lo_dyn->putitem( iv_tablename = iv_table_name it_item = VALUE /aws1/cl_dynattributevalue=>tt_putiteminputattributemap( ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'title' value = NEW /aws1/cl_dynattributevalue( iv_s = 'Speed' ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'year' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '1994' }| ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_putiteminputattrmap_maprow( key = 'rating' value = NEW /aws1/cl_dynattributevalue( iv_n = |{ '7.9' }| ) ) ) ) ). " TYPE REF TO ZCL_AWS1_dyn_PUT_ITEM_OUTPUT MESSAGE '3 rows inserted into DynamoDB Table' && iv_table_name TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY. " Get item from table. TRY. DATA(lo_resp_getitem) = lo_dyn->getitem( iv_tablename = iv_table_name it_key = VALUE /aws1/cl_dynattributevalue=>tt_key( ( VALUE /aws1/cl_dynattributevalue=>ts_key_maprow( key = 'title' value = NEW /aws1/cl_dynattributevalue( iv_s = 'Jaws' ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_key_maprow( key = 'year' value = NEW /aws1/cl_dynattributevalue( iv_n = '1975' ) ) ) ) ). DATA(lt_attr) = lo_resp_getitem->get_item( ). DATA(lo_title) = lt_attr[ key = 'title' ]-value. DATA(lo_year) = lt_attr[ key = 'year' ]-value. DATA(lo_rating) = lt_attr[ key = 'year' ]-value. MESSAGE 'Movie name is: ' && lo_title->get_s( ) TYPE 'I'. MESSAGE 'Movie year is: ' && lo_year->get_n( ) TYPE 'I'. MESSAGE 'Movie rating is: ' && lo_rating->get_n( ) TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY. " Query item from table. TRY. DATA(lt_attributelist) = VALUE /aws1/cl_dynattributevalue=>tt_attributevaluelist( ( NEW /aws1/cl_dynattributevalue( iv_n = '1975' ) ) ). DATA(lt_keyconditions) = VALUE /aws1/cl_dyncondition=>tt_keyconditions( ( VALUE /aws1/cl_dyncondition=>ts_keyconditions_maprow( key = 'year' value = NEW /aws1/cl_dyncondition( it_attributevaluelist = lt_attributelist iv_comparisonoperator = |EQ| ) ) ) ). DATA(lo_query_result) = lo_dyn->query( iv_tablename = iv_table_name it_keyconditions = lt_keyconditions ). DATA(lt_items) = lo_query_result->get_items( ). READ TABLE lo_query_result->get_items( ) INTO DATA(lt_item) INDEX 1. lo_title = lt_item[ key = 'title' ]-value. lo_year = lt_item[ key = 'year' ]-value. lo_rating = lt_item[ key = 'rating' ]-value. MESSAGE 'Movie name is: ' && lo_title->get_s( ) TYPE 'I'. MESSAGE 'Movie year is: ' && lo_year->get_n( ) TYPE 'I'. MESSAGE 'Movie rating is: ' && lo_rating->get_n( ) TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY. " Scan items from table. TRY. DATA(lo_scan_result) = lo_dyn->scan( iv_tablename = iv_table_name ). lt_items = lo_scan_result->get_items( ). " Read the first item and display the attributes. READ TABLE lo_query_result->get_items( ) INTO lt_item INDEX 1. lo_title = lt_item[ key = 'title' ]-value. lo_year = lt_item[ key = 'year' ]-value. lo_rating = lt_item[ key = 'rating' ]-value. MESSAGE 'Movie name is: ' && lo_title->get_s( ) TYPE 'I'. MESSAGE 'Movie year is: ' && lo_year->get_n( ) TYPE 'I'. MESSAGE 'Movie rating is: ' && lo_rating->get_n( ) TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY. " Update items from table. TRY. DATA(lt_attributeupdates) = VALUE /aws1/cl_dynattrvalueupdate=>tt_attributeupdates( ( VALUE /aws1/cl_dynattrvalueupdate=>ts_attributeupdates_maprow( key = 'rating' value = NEW /aws1/cl_dynattrvalueupdate( io_value = NEW /aws1/cl_dynattributevalue( iv_n = '7.6' ) iv_action = |PUT| ) ) ) ). DATA(lt_key) = VALUE /aws1/cl_dynattributevalue=>tt_key( ( VALUE /aws1/cl_dynattributevalue=>ts_key_maprow( key = 'year' value = NEW /aws1/cl_dynattributevalue( iv_n = '1975' ) ) ) ( VALUE /aws1/cl_dynattributevalue=>ts_key_maprow( key = 'title' value = NEW /aws1/cl_dynattributevalue( iv_s = '1980' ) ) ) ). DATA(lo_resp) = lo_dyn->updateitem( iv_tablename = iv_table_name it_key = lt_key it_attributeupdates = lt_attributeupdates ). MESSAGE '1 item updated in DynamoDB Table' && iv_table_name TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY. " Delete table. TRY. lo_dyn->deletetable( iv_tablename = iv_table_name ). lo_dyn->get_waiter( )->tablenotexists( iv_max_wait_time = 200 iv_tablename = iv_table_name ). MESSAGE 'DynamoDB Table deleted.' TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dynresourceinuseex. MESSAGE 'The table cannot be deleted as it is in use' TYPE 'E'. ENDTRY.
-
For API details, see the following topics in Amazon SDK for SAP ABAP API reference.
-
Actions
The following code example shows how to use CreateTable
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. DATA(lt_keyschema) = VALUE /aws1/cl_dynkeyschemaelement=>tt_keyschema( ( NEW /aws1/cl_dynkeyschemaelement( iv_attributename = 'year' iv_keytype = 'HASH' ) ) ( NEW /aws1/cl_dynkeyschemaelement( iv_attributename = 'title' iv_keytype = 'RANGE' ) ) ). DATA(lt_attributedefinitions) = VALUE /aws1/cl_dynattributedefn=>tt_attributedefinitions( ( NEW /aws1/cl_dynattributedefn( iv_attributename = 'year' iv_attributetype = 'N' ) ) ( NEW /aws1/cl_dynattributedefn( iv_attributename = 'title' iv_attributetype = 'S' ) ) ). " Adjust read/write capacities as desired. DATA(lo_dynprovthroughput) = NEW /aws1/cl_dynprovthroughput( iv_readcapacityunits = 5 iv_writecapacityunits = 5 ). oo_result = lo_dyn->createtable( it_keyschema = lt_keyschema iv_tablename = iv_table_name it_attributedefinitions = lt_attributedefinitions io_provisionedthroughput = lo_dynprovthroughput ). " Table creation can take some time. Wait till table exists before returning. lo_dyn->get_waiter( )->tableexists( iv_max_wait_time = 200 iv_tablename = iv_table_name ). MESSAGE 'DynamoDB Table' && iv_table_name && 'created.' TYPE 'I'. " This exception can happen if the table already exists. CATCH /aws1/cx_dynresourceinuseex INTO DATA(lo_resourceinuseex). DATA(lv_error) = |"{ lo_resourceinuseex->av_err_code }" - { lo_resourceinuseex->av_err_msg }|. MESSAGE lv_error TYPE 'E'. ENDTRY.
-
For API details, see CreateTable in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use DeleteItem
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. DATA(lo_resp) = lo_dyn->deleteitem( iv_tablename = iv_table_name it_key = it_key_input ). MESSAGE 'Deleted one item.' TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY.
-
For API details, see DeleteItem in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use DeleteTable
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. lo_dyn->deletetable( iv_tablename = iv_table_name ). " Wait till the table is actually deleted. lo_dyn->get_waiter( )->tablenotexists( iv_max_wait_time = 200 iv_tablename = iv_table_name ). MESSAGE 'Table ' && iv_table_name && ' deleted.' TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table ' && iv_table_name && ' does not exist' TYPE 'E'. CATCH /aws1/cx_dynresourceinuseex. MESSAGE 'The table cannot be deleted since it is in use' TYPE 'E'. ENDTRY.
-
For API details, see DeleteTable in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use DescribeTable
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. oo_result = lo_dyn->describetable( iv_tablename = iv_table_name ). DATA(lv_tablename) = oo_result->get_table( )->ask_tablename( ). DATA(lv_tablearn) = oo_result->get_table( )->ask_tablearn( ). DATA(lv_tablestatus) = oo_result->get_table( )->ask_tablestatus( ). DATA(lv_itemcount) = oo_result->get_table( )->ask_itemcount( ). MESSAGE 'The table name is ' && lv_tablename && '. The table ARN is ' && lv_tablearn && '. The tablestatus is ' && lv_tablestatus && '. Item count is ' && lv_itemcount TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table ' && lv_tablename && ' does not exist' TYPE 'E'. ENDTRY.
-
For API details, see DescribeTable in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use GetItem
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. oo_item = lo_dyn->getitem( iv_tablename = iv_table_name it_key = it_key ). DATA(lt_attr) = oo_item->get_item( ). DATA(lo_title) = lt_attr[ key = 'title' ]-value. DATA(lo_year) = lt_attr[ key = 'year' ]-value. DATA(lo_rating) = lt_attr[ key = 'rating' ]-value. MESSAGE 'Movie name is: ' && lo_title->get_s( ) && 'Movie year is: ' && lo_year->get_n( ) && 'Moving rating is: ' && lo_rating->get_n( ) TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY.
-
For API details, see GetItem in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use ListTables
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. oo_result = lo_dyn->listtables( ). " You can loop over the oo_result to get table properties like this. LOOP AT oo_result->get_tablenames( ) INTO DATA(lo_table_name). DATA(lv_tablename) = lo_table_name->get_value( ). ENDLOOP. DATA(lv_tablecount) = lines( oo_result->get_tablenames( ) ). MESSAGE 'Found ' && lv_tablecount && ' tables' TYPE 'I'. CATCH /aws1/cx_rt_service_generic INTO DATA(lo_exception). DATA(lv_error) = |"{ lo_exception->av_err_code }" - { lo_exception->av_err_msg }|. MESSAGE lv_error TYPE 'E'. ENDTRY.
-
For API details, see ListTables in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use PutItem
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. DATA(lo_resp) = lo_dyn->putitem( iv_tablename = iv_table_name it_item = it_item ). MESSAGE '1 row inserted into DynamoDB Table' && iv_table_name TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY.
-
For API details, see PutItem in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use Query
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. " Query movies for a given year . DATA(lt_attributelist) = VALUE /aws1/cl_dynattributevalue=>tt_attributevaluelist( ( NEW /aws1/cl_dynattributevalue( iv_n = |{ iv_year }| ) ) ). DATA(lt_key_conditions) = VALUE /aws1/cl_dyncondition=>tt_keyconditions( ( VALUE /aws1/cl_dyncondition=>ts_keyconditions_maprow( key = 'year' value = NEW /aws1/cl_dyncondition( it_attributevaluelist = lt_attributelist iv_comparisonoperator = |EQ| ) ) ) ). oo_result = lo_dyn->query( iv_tablename = iv_table_name it_keyconditions = lt_key_conditions ). DATA(lt_items) = oo_result->get_items( ). "You can loop over the results to get item attributes. LOOP AT lt_items INTO DATA(lt_item). DATA(lo_title) = lt_item[ key = 'title' ]-value. DATA(lo_year) = lt_item[ key = 'year' ]-value. ENDLOOP. DATA(lv_count) = oo_result->get_count( ). MESSAGE 'Item count is: ' && lv_count TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY.
-
For API details, see Query in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use Scan
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. " Scan movies for rating greater than or equal to the rating specified DATA(lt_attributelist) = VALUE /aws1/cl_dynattributevalue=>tt_attributevaluelist( ( NEW /aws1/cl_dynattributevalue( iv_n = |{ iv_rating }| ) ) ). DATA(lt_filter_conditions) = VALUE /aws1/cl_dyncondition=>tt_filterconditionmap( ( VALUE /aws1/cl_dyncondition=>ts_filterconditionmap_maprow( key = 'rating' value = NEW /aws1/cl_dyncondition( it_attributevaluelist = lt_attributelist iv_comparisonoperator = |GE| ) ) ) ). oo_scan_result = lo_dyn->scan( iv_tablename = iv_table_name it_scanfilter = lt_filter_conditions ). DATA(lt_items) = oo_scan_result->get_items( ). LOOP AT lt_items INTO DATA(lo_item). " You can loop over to get individual attributes. DATA(lo_title) = lo_item[ key = 'title' ]-value. DATA(lo_year) = lo_item[ key = 'year' ]-value. ENDLOOP. DATA(lv_count) = oo_scan_result->get_count( ). MESSAGE 'Found ' && lv_count && ' items' TYPE 'I'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. ENDTRY.
-
For API details, see Scan in Amazon SDK for SAP ABAP API reference.
-
The following code example shows how to use UpdateItem
.
- SDK for SAP ABAP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. oo_output = lo_dyn->updateitem( iv_tablename = iv_table_name it_key = it_item_key it_attributeupdates = it_attribute_updates ). MESSAGE '1 item updated in DynamoDB Table' && iv_table_name TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY.
-
For API details, see UpdateItem in Amazon SDK for SAP ABAP API reference.
-