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package org.apache.camel.component.jpa; |
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import org.apache.camel.impl.ServiceSupport; |
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import org.springframework.orm.jpa.JpaCallback; |
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import org.springframework.orm.jpa.JpaTemplate; |
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import org.springframework.orm.jpa.JpaTransactionManager; |
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import org.springframework.transaction.TransactionStatus; |
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import org.springframework.transaction.support.TransactionCallback; |
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import org.springframework.transaction.support.TransactionTemplate; |
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import javax.persistence.EntityManager; |
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import javax.persistence.EntityManagerFactory; |
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import javax.persistence.PersistenceException; |
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public class JpaTemplateTransactionStrategy extends ServiceSupport implements TransactionStrategy { |
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private final JpaTemplate jpaTemplate; |
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private final TransactionTemplate transactionTemplate; |
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public static JpaTemplateTransactionStrategy newInstance(EntityManagerFactory emf) { |
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JpaTemplate template = new JpaTemplate(emf); |
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return newInstance(emf, template); |
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} |
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public static JpaTemplateTransactionStrategy newInstance(EntityManagerFactory emf, JpaTemplate template) { |
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JpaTransactionManager transactionManager = new JpaTransactionManager(emf); |
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transactionManager.afterPropertiesSet(); |
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TransactionTemplate tranasctionTemplate = new TransactionTemplate(transactionManager); |
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tranasctionTemplate.afterPropertiesSet(); |
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return new JpaTemplateTransactionStrategy(template, tranasctionTemplate); |
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} |
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public JpaTemplateTransactionStrategy(JpaTemplate jpaTemplate, TransactionTemplate transactionTemplate) { |
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this.jpaTemplate = jpaTemplate; |
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this.transactionTemplate = transactionTemplate; |
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} |
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public Object execute(final JpaCallback callback) { |
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return transactionTemplate.execute(new TransactionCallback() { |
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public Object doInTransaction(TransactionStatus status) { |
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return jpaTemplate.execute(new JpaCallback() { |
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public Object doInJpa(EntityManager entityManager) throws PersistenceException { |
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return callback.doInJpa(entityManager); |
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} |
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}); |
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} |
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}); |
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} |
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protected void doStart() throws Exception { |
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} |
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protected void doStop() throws Exception { |
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} |
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} |