private static ComponentBuilder<?> builderFromGenerator(
Generator<?> source, ComponentDescriptor descriptor, BeneratorContext context) {
boolean nullability = DescriptorUtil.isNullable(descriptor, context);
Double nullQuota = descriptor.getNullQuota();
if (nullQuota != null && nullQuota != 0)
source = context.getGeneratorFactory().applyNullSettings(source, nullability, nullQuota);
TypeDescriptor typeDescriptor = descriptor.getTypeDescriptor();
String scope = (typeDescriptor != null ? typeDescriptor.getScope() : null);
if (descriptor instanceof ArrayElementDescriptor) {
int index = ((ArrayElementDescriptor) descriptor).getIndex();
return new ArrayElementBuilder(index, source, scope);
} else return new PlainEntityComponentBuilder(descriptor.getName(), source, scope);
}
public boolean apply(E target, BeneratorContext context) {
BeneratorContext subContext = context.createSubContext(instanceName);
subContext.setCurrentProduct(new ProductWrapper<E>(target));
for (GeneratorComponent<E> component : components) {
try {
if (!component.execute(subContext)) {
message =
"Component generator for '"
+ instanceName
+ "' is not available any longer: "
+ component;
STATE_LOGGER.debug(message);
return false;
}
} catch (Exception e) {
throw new RuntimeException(
"Failure in generation of '" + instanceName + "', " + "Failed component: " + component,
e);
}
}
LOGGER.debug("Generated {}", target);
subContext.close();
return true;
}
@Override
protected Generator<Object[]> createSourceGenerator(
ArrayTypeDescriptor descriptor, Uniqueness uniqueness, BeneratorContext context) {
// if no sourceObject is specified, there's nothing to do
String sourceName = descriptor.getSource();
if (sourceName == null) return null;
// create sourceObject generator
Generator<Object[]> generator = null;
Object contextSourceObject = context.get(sourceName);
if (contextSourceObject != null)
generator =
createSourceGeneratorFromObject(descriptor, context, generator, contextSourceObject);
else {
String lcSourceName = sourceName.toLowerCase();
if (lcSourceName.endsWith(".csv"))
generator = createCSVSourceGenerator(descriptor, context, sourceName);
else if (lcSourceName.endsWith(".xls"))
generator = createXLSSourceGenerator(descriptor, context, sourceName);
else {
try {
BeanSpec sourceBeanSpec = DatabeneScriptParser.resolveBeanSpec(sourceName, context);
Object sourceObject = sourceBeanSpec.getBean();
if (!sourceBeanSpec.isReference() && sourceObject instanceof ContextAware)
((ContextAware) sourceObject).setContext(context);
generator = createSourceGeneratorFromObject(descriptor, context, generator, sourceObject);
if (sourceBeanSpec.isReference()) generator = WrapperFactory.preventClosing(generator);
return generator;
} catch (Exception e) {
throw new UnsupportedOperationException("Unknown source type: " + sourceName);
}
}
}
if (descriptor.getFilter() != null) {
Expression<Boolean> filter =
new ScriptExpression<Boolean>(ScriptUtil.parseScriptText(descriptor.getFilter()));
generator = new FilteringGenerator<Object[]>(generator, filter);
}
Distribution distribution =
FactoryUtil.getDistribution(descriptor.getDistribution(), uniqueness, false, context);
if (distribution != null)
generator =
new DistributingGenerator<Object[]>(generator, distribution, uniqueness.isUnique());
return generator;
}
@SuppressWarnings({"rawtypes", "unchecked"})
@Override
protected Generator<?> applyComponentBuilders(
Generator<?> generator,
ArrayTypeDescriptor descriptor,
String instanceName,
Uniqueness uniqueness,
BeneratorContext context) {
Generator[] generators;
// create synthetic element generators if necessary
if (generator instanceof BlankArrayGenerator) {
generators = createSyntheticElementGenerators(descriptor, uniqueness, context);
generator =
context
.getGeneratorFactory()
.createCompositeArrayGenerator(Object.class, generators, uniqueness);
}
// ... and don't forget to support the parent class' functionality
generator =
super.applyComponentBuilders(generator, descriptor, instanceName, uniqueness, context);
return generator;
}
private Generator<Object[]> createCSVSourceGenerator(
ArrayTypeDescriptor arrayType, BeneratorContext context, String sourceName) {
logger.debug("createCSVSourceGenerator({})", arrayType);
String encoding = arrayType.getEncoding();
if (encoding == null) encoding = context.getDefaultEncoding();
char separator = DescriptorUtil.getSeparator(arrayType, context);
boolean rowBased = (arrayType.isRowBased() != null ? arrayType.isRowBased() : true);
DataSourceProvider<Object[]> factory =
new CSVArraySourceProvider(
arrayType.getName(),
new ScriptConverterForStrings(context),
rowBased,
separator,
encoding);
Generator<Object[]> generator =
SourceFactory.createRawSourceGenerator(
arrayType.getNesting(),
arrayType.getDataset(),
sourceName,
factory,
Object[].class,
context);
return WrapperFactory.applyConverter(generator, new ArrayElementTypeConverter(arrayType));
}
@SuppressWarnings({"unchecked", "rawtypes"})
static ComponentBuilder<?> createReferenceBuilder(
ReferenceDescriptor descriptor, BeneratorContext context) {
SimpleTypeDescriptor typeDescriptor = (SimpleTypeDescriptor) descriptor.getTypeDescriptor();
// check uniqueness
boolean unique = DescriptorUtil.isUnique(descriptor, context);
Uniqueness uniqueness = (unique ? Uniqueness.SIMPLE : Uniqueness.NONE);
// do I only need to generate nulls?
if (DescriptorUtil.isNullable(descriptor, context)
&& DescriptorUtil.shouldNullifyEachNullable(descriptor, context))
return builderFromGenerator(createNullGenerator(descriptor, context), descriptor, context);
// TODO use SimpleTypeGeneratorFactory?
Generator<?> generator = null;
generator = DescriptorUtil.getGeneratorByName(typeDescriptor, context);
if (generator == null)
generator = SimpleTypeGeneratorFactory.createScriptGenerator(typeDescriptor);
if (generator == null)
generator = SimpleTypeGeneratorFactory.createConstantGenerator(typeDescriptor, context);
if (generator == null)
generator =
SimpleTypeGeneratorFactory.createValuesGenerator(typeDescriptor, uniqueness, context);
// get distribution
Distribution distribution =
FactoryUtil.getDistribution(
typeDescriptor.getDistribution(), descriptor.getUniqueness(), false, context);
// check source
if (generator == null) {
// check target type
String targetTypeName = descriptor.getTargetType();
ComplexTypeDescriptor targetType =
(ComplexTypeDescriptor) context.getDataModel().getTypeDescriptor(targetTypeName);
if (targetType == null) throw new ConfigurationError("Type not defined: " + targetTypeName);
// check targetComponent
String targetComponent = descriptor.getTargetComponent();
// check source
String sourceName = typeDescriptor.getSource();
if (sourceName == null) throw new ConfigurationError("'source' is not set for " + descriptor);
Object sourceObject = context.get(sourceName);
if (sourceObject instanceof StorageSystem) {
StorageSystem sourceSystem = (StorageSystem) sourceObject;
String selector = typeDescriptor.getSelector();
String subSelector = typeDescriptor.getSubSelector();
boolean subSelect = !StringUtil.isEmpty(subSelector);
String selectorToUse = (subSelect ? subSelector : selector);
if (isIndividualSelector(selectorToUse)) {
generator = new DataSourceGenerator(sourceSystem.query(selectorToUse, true, context));
} else {
generator =
new DataSourceGenerator(
sourceSystem.queryEntityIds(
targetTypeName,
selectorToUse,
context)); // TODO v0.7.2 query by targetComponent
if (selectorToUse == null && distribution == null)
if (context.isDefaultOneToOne()) distribution = new ExpandSequence();
else distribution = SequenceManager.RANDOM_SEQUENCE;
}
if (subSelect) generator = WrapperFactory.applyHeadCycler(generator);
} else throw new ConfigurationError("Not a supported source type: " + sourceName);
}
// apply distribution if necessary
if (distribution != null)
generator = new DistributingGenerator(generator, distribution, unique);
// check multiplicity
generator = ComponentBuilderFactory.createMultiplicityWrapper(descriptor, generator, context);
if (LOGGER.isDebugEnabled()) LOGGER.debug("Created " + generator);
// check 'cyclic' config
generator = DescriptorUtil.wrapWithProxy(generator, typeDescriptor);
return builderFromGenerator(generator, descriptor, context);
}
