oracle.toplink.essentials.internal.helper.EJB30ConversionManager Maven / Gradle / Ivy
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package oracle.toplink.essentials.internal.helper;
/**
*
* Purpose: Extension to the existing conversion manager to support the
* EJB 3.0 spec.
*
* Responsibilities:
*
* - Allow a null value default to be read into primitives. With the current
* conversion manager, setting a null into a primitive causes and exception.
* This conversion manager was added to avoid that exception and therefore, add
* support for schemas that were built before the object model was mapped
* (using a primitive). Therefore, TopLink will not change the null column value
* in the database through this conversion. The value on the dataabse will only
* be changed if the user actually sets a new primitive value.
*
- Allows users to define their own set of default null values to be used
* in the conversion.
*
*
* @author Guy Pelletier
* @since TopLink 10.1.4 RI
*/
public class EJB30ConversionManager extends ConversionManager {
public EJB30ConversionManager() {
super();
}
/**
* INTERNAL:
*/
public Object getDefaultNullValue(Class theClass) {
Object defaultNullValue = getDefaultNullValues().get(theClass);
if (defaultNullValue == null && theClass.isPrimitive()) {
return 0;
} else {
return defaultNullValue;
}
}
}