OperationInvoker (IBM FHIR Server)

java.lang.Object
- com.ibm.fhir.cli.invoker.OperationInvoker

Direct Known Subclasses:

BatchInvoker, ConditionalCreateInvoker, ConditionalDeleteInvoker, ConditionalUpdateInvoker, CreateInvoker, DeleteInvoker, HistoryInvoker, MetadataInvoker, ReadInvoker, SearchAllInvoker, SearchInvoker, SearchPostInvoker, TransactionInvoker, UpdateInvoker, ValidateInvoker, VreadInvoker
```
public abstract class OperationInvoker
extends Object
```
This is a base class for all of the various operation invoker classes.

Field Summary

Fields
Modifier and Type	Field	Description
`protected FHIRClient`	`client`
`protected FHIRParameters`	`queryParameters`
`protected FHIRRequestHeader[]`	`requestHeaders`
`protected FHIRResponse`	`response`

Constructor Summary

Constructors
Constructor Description

OperationInvoker()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`doInvoke(InvocationContext ic)`	Each subclass will implement this method to invoke the appropriate FHIR Client API, based on the operation requested by the user.
`protected FHIRClient`	`getClient(Properties properties)`	Retrieves a new FHIRClient instance using the specified properties.
`void`	`invoke(InvocationContext ic)`
`protected Properties`	`loadClientProperties(String filename)`	Loads the FHIRClient properties from the specified file.
`void`	`postInvoke(InvocationContext ic)`	Saves off the relevant response information in the InvocationContext after the operation has been invoked.
`void`	`preInvoke(InvocationContext ic)`	Performs the necessary steps before the operation is invoked.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

client
```
protected FHIRClient client
```

response
```
protected FHIRResponse response
```

queryParameters

protected FHIRParameters queryParameters

requestHeaders

protected FHIRRequestHeader[] requestHeaders

Constructor Detail
- OperationInvoker
```
public OperationInvoker()
```

Method Detail
- invoke
```
public void invoke(InvocationContext ic)
            throws Exception
```
  Throws:
  
  Exception
- preInvoke
```
public void preInvoke(InvocationContext ic)
               throws Exception
```
  Performs the necessary steps before the operation is invoked.
  
  Throws:
  
  Exception
- doInvoke
```
public abstract void doInvoke(InvocationContext ic)
                       throws Exception
```
  Each subclass will implement this method to invoke the appropriate FHIR Client API, based on the operation requested by the user.
  
  Throws:
  
  Exception
- postInvoke
```
public void postInvoke(InvocationContext ic)
                throws Exception
```
  Saves off the relevant response information in the InvocationContext after the operation has been invoked.
  
  Throws:
  
  Exception
- loadClientProperties
```
protected Properties loadClientProperties(String filename)
                                   throws Exception
```
  Loads the FHIRClient properties from the specified file.
  
  Throws:
  
  Exception
- getClient
```
protected FHIRClient getClient(Properties properties)
                        throws Exception
```
  Retrieves a new FHIRClient instance using the specified properties.
  
  Throws:
  
  Exception