Examples of org.eclipse.persistence.descriptors.ChangedFieldsLockingPolicy

Package org.eclipse.persistence.descriptors

Examples of org.eclipse.persistence.descriptors.ChangedFieldsLockingPolicy

org.eclipse.persistence.descriptors.ChangedFieldsLockingPolicy

Purpose: An implementation of the OptimisticLockingPolicy interface. This policy compares only the changed fields in the WHERE clause when doing an update. If any field has been changed, an optimistic locking exception will be thrown. A delete will only compare the primary key.
NOTE: This policy can only be used inside a unit of work. @since TopLink 2.1 @author Peter Krogh

            // in later processing.
            descriptor.setUsesCascadedOptimisticLocking(m_cascade != null && m_cascade.booleanValue());
        } else if (m_type.equals(OptimisticLockingType.ALL_COLUMNS.name())) {
            descriptor.setOptimisticLockingPolicy(new AllFieldsLockingPolicy());
        } else if (m_type.equals(OptimisticLockingType.CHANGED_COLUMNS.name())) {
            descriptor.setOptimisticLockingPolicy(new ChangedFieldsLockingPolicy());
        } else if (m_type.equals(OptimisticLockingType.SELECTED_COLUMNS.name())) {
            if (m_selectedColumns.isEmpty()) {
                throw ValidationException.optimisticLockingSelectedColumnNamesNotSpecified(descriptor.getJavaClass());
            } else {
                SelectedFieldsLockingPolicy policy = new SelectedFieldsLockingPolicy();

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            // in later processing.
            descriptor.setUsesCascadedOptimisticLocking(m_cascade != null && m_cascade.booleanValue());
        } else if (m_type.equals(OptimisticLockingType.ALL_COLUMNS.name())) {
            descriptor.setOptimisticLockingPolicy(new AllFieldsLockingPolicy());
        } else if (m_type.equals(OptimisticLockingType.CHANGED_COLUMNS.name())) {
            descriptor.setOptimisticLockingPolicy(new ChangedFieldsLockingPolicy());
        } else if (m_type.equals(OptimisticLockingType.SELECTED_COLUMNS.name())) {
            if (m_selectedColumns.isEmpty()) {
                throw ValidationException.optimisticLockingSelectedColumnNamesNotSpecified(descriptor.getJavaClass());
            } else {
                SelectedFieldsLockingPolicy policy = new SelectedFieldsLockingPolicy();

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Related Classes of org.eclipse.persistence.descriptors.ChangedFieldsLockingPolicy

org.eclipse.persistence.internal.jpa.metadata.locking.OptimisticLockingMetadata

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