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Auto detect whether the appropriate dialect is selected

This commit is contained in:
James Agnew 2018-10-15 09:53:04 -04:00
parent 9894980fe0
commit 483c9bff3a
1 changed files with 24 additions and 1 deletions
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23
hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/search/SearchCoordinatorSvcImpl.java
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@ -47,6 +47,9 @@ import org.apache.commons.lang3.time.DateUtils;
import org.hl7.fhir.instance.model.api.IBaseResource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.*;
import org.springframework.orm.jpa.JpaDialect;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.vendor.HibernateJpaDialect;
import org.springframework.scheduling.concurrent.CustomizableThreadFactory;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
@ -57,6 +60,7 @@ import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;
import javax.annotation.Nullable;
import javax.annotation.PostConstruct;
import javax.persistence.EntityManager;
import java.util.*;
import java.util.concurrent.*;
@ -92,6 +96,21 @@ public class SearchCoordinatorSvcImpl implements ISearchCoordinatorSvc {
private IPagingProvider myPagingProvider;
private int mySyncSize = DEFAULT_SYNC_SIZE;
/** Set in {@link #start()} */
private boolean myCustomIsolationSupported;
@PostConstruct
public void start() {
if (myManagedTxManager instanceof JpaTransactionManager) {
JpaDialect jpaDialect = ((JpaTransactionManager) myManagedTxManager).getJpaDialect();
if (jpaDialect instanceof HibernateJpaDialect) {
myCustomIsolationSupported = true;
}
}
if (myCustomIsolationSupported == false) {
ourLog.warn("JPA dialect does not support transaction isolation! This can have an impact on search performance.")
}
}
/**
* Constructor
@ -612,7 +631,11 @@ public class SearchCoordinatorSvcImpl implements ISearchCoordinatorSvc {
TransactionTemplate txTemplate = new TransactionTemplate(myManagedTxManager);
txTemplate.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW);
if (myCustomIsolationSupported) {
txTemplate.setIsolationLevel(TransactionDefinition.ISOLATION_READ_UNCOMMITTED);
}
txTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
protected void doInTransactionWithoutResult(TransactionStatus theStatus) {