Package org.ehrbase.openehr.aqlengine.repository

Class AqlQueryRepository

java.lang.Object

org.ehrbase.openehr.aqlengine.repository.AqlQueryRepository

@Repository
public class AqlQueryRepository
extends Object

Executes ASL queries as SQL, and converts the results

Constructor Summary

Constructors

Constructor	Description
AqlQueryRepository(org.ehrbase.api.service.SystemService systemService, org.ehrbase.api.knowledge.KnowledgeCacheService knowledgeCache, AqlSqlQueryBuilder queryBuilder)

Method Summary

Modifier and Type	Method	Description
List<List<Object>>	executeQuery(PreparedQuery preparedQuery)	Executes the given PreparedQuery in its own read only transaction.
String	explainQuery(boolean analyze, PreparedQuery preparedQuery)	Explains the with optional analyse the given PreparedQuery in its own read only transaction.
PreparedQuery	prepareQuery(AslRootQuery aslQuery, List<SelectWrapper> selects)	Prepares the full SQL query.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AqlQueryRepository

public AqlQueryRepository(org.ehrbase.api.service.SystemService systemService,
 org.ehrbase.api.knowledge.KnowledgeCacheService knowledgeCache,
 AqlSqlQueryBuilder queryBuilder)

Method Details

prepareQuery

public PreparedQuery prepareQuery(AslRootQuery aslQuery,
 List<SelectWrapper> selects)

Prepares the full SQL query. Build the structure from AQL and selects postprocess based on the given selects.

Parameters:

aslQuery - to create the actual SQL query from.

selects - to obtain AqlSqlResultPostprocessor for.

See Also:

• executeQuery(PreparedQuery)
• explainQuery(boolean, PreparedQuery)

executeQuery

@Transactional(readOnly=true)
public List<List<Object>> executeQuery(PreparedQuery preparedQuery)

Executes the given PreparedQuery in its own read only transaction.

Parameters:

preparedQuery - to execute

Returns:

resultSet

explainQuery

@Transactional(readOnly=true)
public String explainQuery(boolean analyze,
 PreparedQuery preparedQuery)

Explains the with optional analyse the given PreparedQuery in its own read only transaction.

Parameters:

analyze - also run analyse

preparedQuery - to explain and analyse if needed

Returns:

result in serialized Json format