FHIRDbConnectionStrategy (LinuxForHealth FHIR Server)

All Known Implementing Classes:

FHIRDbConnectionStrategyBase, FHIRDbTenantDatasourceConnectionStrategy, FHIRDbTestConnectionStrategy
```
public interface FHIRDbConnectionStrategy
```
Abstraction used to obtain JDBC connections. The database being connected is determined by the datasource currently referenced by the FHIRRequestContext (which is a ThreadLocal thing, and not obvious).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`applySearchOptimizerOptions(java.sql.Connection c, boolean isCompartment)`	Apply any optimizer options configured to improve search query performance See issue-1911 for details.
`java.sql.Connection`	`getConnection()`	Get a connection to the desired data source identified by the current `FHIRRequestContext`
`FHIRDbFlavor`	`getFlavor()`	Get the flavor of the database we are working with to reveal its capabilities
`QueryHints`	`getQueryHints()`	Append the given hint to FHIR search queries

- Method Detail
  - getConnection
```
java.sql.Connection getConnection()
                           throws FHIRPersistenceDBConnectException
```
    Get a connection to the desired data source identified by the current FHIRRequestContext
    
    Returns:
    
    a Connection. Never null.
    
    Throws:
    
    FHIRPersistenceDBConnectException
  - getFlavor
```
FHIRDbFlavor getFlavor()
                throws FHIRPersistenceDataAccessException
```
    Get the flavor of the database we are working with to reveal its capabilities
    
    Returns:
    
    the datastore/source flavor from the FHIR configuration
    
    Throws:
    
    FHIRPersistenceDataAccessException - if there is an issue with the configuration
  - getQueryHints
```
QueryHints getQueryHints()
```
    Append the given hint to FHIR search queries
    
    Returns:
  - applySearchOptimizerOptions
```
void applySearchOptimizerOptions(java.sql.Connection c,
                                 boolean isCompartment)
```
    Apply any optimizer options configured to improve search query performance See issue-1911 for details.
    
    Parameters:
    
    c - the connection to be configured
    
    isCompartment - true if the query is a compartment-based search