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Test hibernate level 1 cache

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This commit is contained in:
Ben Bosman
2021-02-10 14:42:50 +01:00
parent 12ffc78452
commit 4f821ca417
1 changed files with 40 additions and 1 deletions
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41
dspace-api/src/main/java/org/dspace/content/dao/impl/MetadataFieldDAOImpl.java
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@@ -8,8 +8,10 @@
package org.dspace.content.dao.impl;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.persistence.Query;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
@@ -17,6 +19,7 @@ import javax.persistence.criteria.Join;
import javax.persistence.criteria.Root;
import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.Logger;
import org.dspace.content.MetadataField;
import org.dspace.content.MetadataField_;
import org.dspace.content.MetadataSchema;
@@ -24,6 +27,7 @@ import org.dspace.content.MetadataSchema_;
import org.dspace.content.dao.MetadataFieldDAO;
import org.dspace.core.AbstractHibernateDAO;
import org.dspace.core.Context;
import org.hibernate.Session;
/**
* Hibernate implementation of the Database Access Object interface class for the MetadataField object.
@@ -33,6 +37,13 @@ import org.dspace.core.Context;
* @author kevinvandevelde at atmire.com
*/
public class MetadataFieldDAOImpl extends AbstractHibernateDAO<MetadataField> implements MetadataFieldDAO {
/**
* log4j logger
*/
private static Logger log = org.apache.logging.log4j.LogManager.getLogger(MetadataFieldDAOImpl.class);
private static Map<String, Integer> cachedFields = new HashMap();
protected MetadataFieldDAOImpl() {
super();
}
@@ -79,6 +90,30 @@ public class MetadataFieldDAOImpl extends AbstractHibernateDAO<MetadataField> im
@Override
public MetadataField findByElement(Context context, String metadataSchema, String element, String qualifier)
throws SQLException {
String key = metadataSchema + "." + element + "." + qualifier;
if (cachedFields.containsKey(key)) {
Session session = getHibernateSession(context);
MetadataField metadataField = null;
try {
metadataField = session.load(MetadataField.class, cachedFields.get(key));
} catch (Throwable e) {
log.error("Failed to load metadata field " + key + " using ID " + cachedFields.get(key));
}
try {
if (metadataField != null &&
(metadataField.getMetadataSchema().getName() + "." + metadataField.getElement() +
"." + metadataField.getQualifier()).equals(key)) {
return metadataField;
} else {
cachedFields.remove(key);
}
} catch (Throwable e) {
log.error("Failed to verify consistence of metadata field " + key +
" using ID " + cachedFields.get(key));
cachedFields.clear();
}
}
Query query;
if (StringUtils.isNotBlank(qualifier)) {
@@ -103,7 +138,11 @@ public class MetadataFieldDAOImpl extends AbstractHibernateDAO<MetadataField> im
}
query.setHint("org.hibernate.cacheable", Boolean.TRUE);
return singleResult(query);
MetadataField metadataField = singleResult(query);
if (metadataField != null) {
cachedFields.put(key, metadataField.getID());
}
return metadataField;
}
@Override