Data is at the heart of any business. Before exposing its valuable assets as APIs, there needs to be an efficient approach to bring this data to the API layer. One of the most convenient ways of doing this is to use data services. By using data services, you can model a virtualized view of the data to be consumed in an intuitive manner. This session will explore the upcoming WSO2 Data Integration Server, which is an upgrade of the current WSO2 Data Service Server. It will examine its key features such as its out-of-the-box support for ETL (extract, transform and load). The WSO2 Data Integration Server can now expose anything from CRUD (create, read, update and delete) operations to complex ETL processes as data APIs in no time.

2. source: www.cx-journey.com

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10. {
"employees": {
"employee": [
{
"lastName": "Patterson",
"salary": 2000,
"firstName": "Mary"
}
]
}
}

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22. @startuml
IntegrationFlow : DISWorkflow
participant inboundendpointListener : InboundEndpoint(protocol("http"),port(8082),context("/disworkflow"))
participant pipeline : Pipeline("dis_workflow")
participant datasource : OutboundDataSource(protocol("rdbms"),host("jdbc:mysql://localhost:3306/DISTEST"),
username("root"),password("root"))
inboundendpointListener -> pipeline : "Request"
log("Before Select")
pipeline -> datasource : query(statement("SELECT * FROM Employee"),resultset(rs))
datasource -> pipeline
log("After Select")
pipeline -> inboundendpointListener : "Response"
@enduml

24. @startuml
IntegrationFlow : DISWorkflow
participant inboundListener : InboundEndpoint(protocol("http"),port(8082),context("/disworkflow"))
participant pipeline : Pipeline("dis_workflow")
participant datasource : OutboundDataSource(protocol("rdbms"),host("jdbc:mysql://localhost:3306/DISTEST"),username("root"),password("root"))
inboundListener -> pipeline : "Request"
log("Before Insert")
group transaction
pipeline -> datasource : query(statement("INSERT INTO Location(City,Country) VALUES(?,?)"),parameter($in.City,$in.Country),resultset(rs))
datasource -> pipeline
pipeline -> datasource : query(statement("INSERT INTO Employee(Name,CityID) VALUES(?,?)"),parameter($in.Name,$rs.id))
datasource -> pipeline
else
log("Transaction Error - Rolled back")
end
log("After Insert")
pipeline -> datasource : query(statement("SELECT * FROM Employee"))
datasource -> pipeline
pipeline -> inboundListener : "Response"
@enduml

26. @startuml
IntegrationFlow : DISWorkflow
participant inboundListener : InboundEndpoint(protocol("http"),port(8082),context("/disworkflow"))
participant pipeline : Pipeline("dis_workflow")
participant datasource : OutboundDataSource(protocol("rdbms"),host("jdbc:mysql://localhost:3306/DISTEST"),username("root"),password("root"))
inboundListener -> pipeline : "Request"
group Transaction
log("Within Transaction")
loop $in.cities
pipeline -> datasource : query(statement("INSERT INTO Location(City, Country) VALUES(?,?)"),parameter($cities.City,$cities.Country),resultset(rs0))
datasource -> pipeline
loop $cities.employees
pipeline -> datasource : query(statement("INSERT INTO Employee(Name,CityID) VALUES(?,?)"),parameter($employees.Name,$rs0.id))
datasource -> pipeline
end
end
else
log("Error Sequence")
end
log("Before Select")
pipeline -> datasource : query(statement("SELECT * FROM Employee"),resultset(rs2))
datasource -> pipeline
log("After Select")
pipeline -> inboundListener : "Response"
@enduml

28. @startuml
IntegrationFlow : DIS_Insert
participant inboundListener : InboundEndpoint(protocol("http"),port(8080),context("/insertemployee"))
participant pipeline : Pipeline("dis_flow")
participant datasource1 : OutboundDataSource(protocol("rdbms"),host("jdbc:mysql://localhost:3306/mysqltestdb"),username("root"),password("root"))
participant datasource2 : OutboundDataSource(protocol("rdbms"),host("jdbc:oracle:thin:@//localhost:1522/oracletestdb"),username("root"),password("root"))
inboundListener -> pipeline : "Request"
log("Before Insert")
pipeline -> datasource1 : query(statement("INSERT INTO Location(City, Country) VALUES(?,?)"),parameter($in.CityName,$in.Country))
datasource1 -> pipeline
pipeline -> datasource2 : query(statement("INSERT INTO Employee(Id, Role) VALUE(?,?)"),parameter($in.Id,$in.Role))
datasource2 -> pipeline
log("After Insert")
pipeline -> datasource1 : query(statement("SELECT * FROM Location"))
datasource1 -> pipeline
pipeline -> inboundListener : "Response"
@enduml

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