Accelerated data access

Accelerated Data Access Performance Tuning EclipseLink JPA Gordon Yorke JPA 2.1 Expert Group EclipseLink Architecture Council

EclipseLink Project ,[object Object],[object Object],[object Object],[object Object],[object Object]

JPA Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Profiling Environment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mapping Optimizations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Graph Loading ,[object Object],[object Object],Query query = em.createQuery(“SELECT po FROM PurchaseOrder po “ + “WHERE po.status = 'ACTIVE' AND “ + “po.customer.address.city = 'SFO‘”); List<PurchaseOrder> pos = query.getResultList(); // Force graph load simulating presentation tier logic for (PurchaseOrder po: pos) { po.getCustomer().getAddress(); po.getCustomer().getPhone().size(); }

Graph Loading Non Optimized ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Join Reading ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],“ Select po … FETCH JOIN po.customer” query.setHint(QueryHints.FETCH, “po.customer.address”); query.setHint(QueryHints.FETCH, “po.customer.phones”); List<PurchaseOrder> pos = query.getResultList();

Batch Reading ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Query query = em.createQuery(“…”); query.setHint(QueryHints.FETCH, “po.customer.address”); query.setHint(QueryHints.BATCH, “po.customer.phones”); List<PurchaseOrder> pos = query.getResultList();

Efficient use of EM ,[object Object],[object Object],[object Object],[object Object]

Lazy Loading ,[object Object],[object Object],[object Object]

Fetch Groups ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Other loading optimizations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Query optimizations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Caching ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Caching JPA 2.0 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],public interface Cache { public boolean contains(Class cls, Object pk); public void evict(Class cls, Object pk); public void evict(Class cls); public void evictAll(); }

EclipseLink Caching advantage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

EclipseLink Weaving ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Accelerated data access

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