private MappingOperation<?, ?> update(
final MappingOperation<?, ?> mapping,
final Object source,
final Model target,
final String eventType) {
MappingOperation<?, ?> resultMapping;
if (source == null || target == null) {
resultMapping = mapping;
} else {
// Not or no longer a mapping placeholder
if (mapping.getType() == null) {
mappingPlaceholders.remove(mapping);
}
if (source instanceof Model) {
if (mapping.getType() != null) {
delegate.removeMapping(mapping);
}
resultMapping = delegate.mapField((Model) source, target);
if (mapping.getType() == MappingType.CUSTOM) {
final CustomMapping customMapping = (CustomMapping) mapping;
resultMapping =
delegate.customizeMapping(
(FieldMapping) resultMapping,
customMapping.getMappingClass(),
customMapping.getMappingOperation());
}
} else if (source instanceof Variable) {
if (mapping.getType() == MappingType.VARIABLE && target.equals(mapping.getTarget())) {
resultMapping = mapping;
((VariableMapping) mapping).setVariable((Variable) source);
} else {
if (mapping.getType() != null) {
delegate.removeMapping(mapping);
}
resultMapping = delegate.mapVariable((Variable) source, target);
}
} else {
if (mapping.getType() != null) {
delegate.removeMapping(mapping);
}
final Expression expression = (Expression) source;
resultMapping =
delegate.mapExpression(expression.getLanguage(), expression.getExpression(), target);
}
}
fireEvent(eventType, mapping, resultMapping);
return resultMapping;
}
/**
* @param customMapping
* @return a new (uncustomized) field mapping
*/
public FieldMapping uncustomizeMapping(final CustomMapping customMapping) {
delegate.removeMapping(customMapping);
final FieldMapping fieldMapping =
delegate.mapField(customMapping.getSource(), customMapping.getTarget());
fireEvent(MAPPING_CUSTOMIZE, customMapping, fieldMapping);
return fieldMapping;
}
/**
* @param mapping
* @param language
* @param expression
* @return The supplied mapping if it remains incomplete, else a new mapping mapped via the
* delegate
*/
public MappingOperation<?, ?> setSourceExpression(
final MappingOperation<?, ?> mapping, final String language, final String expression) {
if (mapping.getType() == null) {
((MappingPlaceholder) mapping).setSource(new ExpressionPlaceholder(language, expression));
} else {
delegate.removeMapping(mapping);
}
return update(mapping, language, expression, (Model) mapping.getTarget(), MAPPING_SOURCE);
}
/**
* {@inheritDoc}
*
* @see org.jboss.tools.fuse.transformation.MapperConfiguration
* #removeMapping(org.jboss.tools.fuse.transformation.MappingOperation)
*/
@Override
public void removeMapping(final MappingOperation<?, ?> mapping) {
if (mapping.getType() == null) {
mappingPlaceholders.remove(mapping);
} else {
delegate.removeMapping(mapping);
}
fireEvent(MAPPING, mapping, null);
}