List of useTransparentMap() Examples

Examples of useTransparentMap()

org.eclipse.persistence.mappings.CollectionMapping.useTransparentMap()

PUBLIC: If transparent indirection is used, a special map will be placed in the source object's attribute. Fetching of the contents of the map from the database will be delayed until absolutely necessary. (Any message sent to the map will cause the contents to be faulted in from the database.) This can result in rather significant performance gains, without having to change the source object's attribute from Map (or Map or Hashtable) to ValueHolderInterface.

The key used in the Map is the value returned by a call to the zero parameter method named methodName. The method should be a zero argument method implemented (or inherited) by the value to be inserted into the Map.

org.eclipse.persistence.mappings.DirectMapMapping.useTransparentMap()

PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target objects.

The container class must implement (directly or indirectly) the Map interface.

Note: Do not use both useMapClass(Class concreteClass), useTransparentMap(). The last use of one of the two methods will override the previous one.

            // the collection table be processed before hand.
            process(mapping);
            
            // Process the fetch type
            if (usesIndirection()) {
                mapping.useTransparentMap();
            } else {
                mapping.dontUseIndirection();
                mapping.useMapClass(java.util.Hashtable.class);
            }

            // the collection table be processed before hand.
            process(mapping);
            
            // Process the fetch type
            if (usesIndirection()) {
                mapping.useTransparentMap();
            } else {
                mapping.dontUseIndirection();
                mapping.useMapClass(java.util.Hashtable.class);
            }

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Examples of useTransparentMap()

Examples of org.eclipse.persistence.mappings.DirectMapMapping.useTransparentMap()

Examples of org.eclipse.persistence.mappings.DirectMapMapping.useTransparentMap()