public LoadMappingsResult load(List<MappingFileData> mappings) {
Configuration globalConfiguration = findConfiguration(mappings);
ClassMappings customMappings = new ClassMappings();
// Decorate the raw ClassMap objects and create ClassMap "prime" instances
for (MappingFileData mappingFileData : mappings) {
List<ClassMap> classMaps = mappingFileData.getClassMaps();
ClassMappings customMappingsPrime =
mappingsParser.processMappings(classMaps, globalConfiguration);
customMappings.addAll(customMappingsPrime);
}
// Add default mappings using matching property names if wildcard policy
// is true. The addDefaultFieldMappings will check the wildcard policy of each classmap
ClassMapBuilder.addDefaultFieldMappings(customMappings, globalConfiguration);
Set<CustomConverterDescription> customConverterDescriptions =
new LinkedHashSet<CustomConverterDescription>();
// build up custom converter description objects
if (globalConfiguration.getCustomConverters() != null
&& globalConfiguration.getCustomConverters().getConverters() != null) {
for (CustomConverterDescription cc :
globalConfiguration.getCustomConverters().getConverters()) {
customConverterDescriptions.add(cc);
}
}
// iterate through the classmaps and set all of the custom converters on them
for (Entry<CacheKeyFactory.CacheKey, ClassMap> entry : customMappings.getAll().entrySet()) {
ClassMap classMap = entry.getValue();
if (classMap.getCustomConverters() != null) {
classMap
.getCustomConverters()
.setConverters(new ArrayList<CustomConverterDescription>(customConverterDescriptions));
} else {
classMap.setCustomConverters(new CustomConverterContainer());
classMap
.getCustomConverters()
.setConverters(new ArrayList<CustomConverterDescription>(customConverterDescriptions));
}
}
addDefaultCustomConverters(globalConfiguration);
return new LoadMappingsResult(customMappings, globalConfiguration);
}
/**
* Internal class that loads and parses custom xml mapping files into ClassMap objects. The ClassMap
* objects returned from the load method are fully decorated and ready to be used by the internal
* mapping engine. Only intended for internal use.
*
* @author tierney.matt
* @author garsombke.franz
*/
public class CustomMappingsLoader {
private static final MappingsParser mappingsParser = MappingsParser.getInstance();
public LoadMappingsResult load(List<MappingFileData> mappings) {
Configuration globalConfiguration = findConfiguration(mappings);
ClassMappings customMappings = new ClassMappings();
// Decorate the raw ClassMap objects and create ClassMap "prime" instances
for (MappingFileData mappingFileData : mappings) {
List<ClassMap> classMaps = mappingFileData.getClassMaps();
ClassMappings customMappingsPrime =
mappingsParser.processMappings(classMaps, globalConfiguration);
customMappings.addAll(customMappingsPrime);
}
// Add default mappings using matching property names if wildcard policy
// is true. The addDefaultFieldMappings will check the wildcard policy of each classmap
ClassMapBuilder.addDefaultFieldMappings(customMappings, globalConfiguration);
Set<CustomConverterDescription> customConverterDescriptions =
new LinkedHashSet<CustomConverterDescription>();
// build up custom converter description objects
if (globalConfiguration.getCustomConverters() != null
&& globalConfiguration.getCustomConverters().getConverters() != null) {
for (CustomConverterDescription cc :
globalConfiguration.getCustomConverters().getConverters()) {
customConverterDescriptions.add(cc);
}
}
// iterate through the classmaps and set all of the custom converters on them
for (Entry<CacheKeyFactory.CacheKey, ClassMap> entry : customMappings.getAll().entrySet()) {
ClassMap classMap = entry.getValue();
if (classMap.getCustomConverters() != null) {
classMap
.getCustomConverters()
.setConverters(new ArrayList<CustomConverterDescription>(customConverterDescriptions));
} else {
classMap.setCustomConverters(new CustomConverterContainer());
classMap
.getCustomConverters()
.setConverters(new ArrayList<CustomConverterDescription>(customConverterDescriptions));
}
}
addDefaultCustomConverters(globalConfiguration);
return new LoadMappingsResult(customMappings, globalConfiguration);
}
private Configuration findConfiguration(List<MappingFileData> mappingFileDataList) {
Configuration globalConfiguration = null;
for (MappingFileData mappingFileData : mappingFileDataList) {
if (mappingFileData.getConfiguration() != null) {
// Only allow 1 global configuration
if (globalConfiguration != null) {
MappingUtils.throwMappingException(
"More than one global configuration found. "
+ "Only one global configuration block (<configuration></configuration>) can be specified across all mapping files. "
+ "You need to consolidate all global configuration blocks into a single one.");
}
globalConfiguration = mappingFileData.getConfiguration();
}
}
// If global configuration was not specified, use defaults
if (globalConfiguration == null) {
globalConfiguration = new Configuration();
}
return globalConfiguration;
}
private void addDefaultCustomConverters(Configuration globalConfiguration) {
if (globalConfiguration.getCustomConverters() != null
&& globalConfiguration.getCustomConverters().findConverter(UUID.class, UUID.class)
== null) {
CustomConverterDescription defaultUUIDConverter = new CustomConverterDescription();
defaultUUIDConverter.setClassA(UUID.class);
defaultUUIDConverter.setClassB(UUID.class);
defaultUUIDConverter.setType(ByReferenceConverter.class);
globalConfiguration.getCustomConverters().addConverter(defaultUUIDConverter);
}
}
/**
* Returns the source field value as a reference, regardless of other parameters. Only intended
* for internal use.
*/
public static class ByReferenceConverter implements CustomConverter {
@Override
public Object convert(
Object existingDestinationFieldValue,
Object sourceFieldValue,
Class<?> destinationClass,
Class<?> sourceClass) {
return sourceFieldValue;
}
}
}
