public Converter convert(String sourceValue) throws ConversionException {
if (StringUtil.isEmpty(sourceValue)) return null;
Object result = BeanUtil.newInstance(sourceValue);
if (result instanceof Format)
return new ParseFormatConverter(Object.class, (Format) result, false);
else if (result instanceof Converter) return (Converter) result;
else
throw new ConfigurationError("Class is neither Converter nor Format: " + result.getClass());
}
@SuppressWarnings({"unchecked", "rawtypes"})
static ComponentBuilder<?> wrapWithCondition(
ComponentDescriptor descriptor, ComponentBuilder<?> builder) {
TypeDescriptor typeDescriptor = descriptor.getTypeDescriptor();
if (typeDescriptor == null) return builder;
String conditionText = typeDescriptor.getCondition();
if (!StringUtil.isEmpty(conditionText)) {
Expression<Boolean> condition = new ScriptExpression<Boolean>(conditionText);
return new ConditionalComponentBuilder(builder, condition);
} else return builder;
}
@Override
public ImportStatement doParse(
Element element, Statement[] parentPath, BeneratorParseContext context) {
// check syntax
assertAtLeastOneAttributeIsSet(element, ATT_DEFAULTS, ATT_DOMAINS, ATT_PLATFORMS, ATT_CLASS);
// prepare parsing
ArrayBuilder<String> classImports = new ArrayBuilder<String>(String.class);
ArrayBuilder<String> domainImports = new ArrayBuilder<String>(String.class);
// defaults import
boolean defaults = ("true".equals(element.getAttribute("defaults")));
// check class import
String attribute = element.getAttribute("class");
if (!StringUtil.isEmpty(attribute)) classImports.add(attribute);
// (multiple) domain import
attribute = element.getAttribute("domains");
if (!StringUtil.isEmpty(attribute))
domainImports.addAll(StringUtil.trimAll(StringUtil.tokenize(attribute, ',')));
// (multiple) platform import
attribute = element.getAttribute("platforms");
List<PlatformDescriptor> platformImports = null;
if (!StringUtil.isEmpty(attribute))
platformImports = importPlatforms(StringUtil.trimAll(attribute.split(",")), context);
return new ImportStatement(
defaults, classImports.toArray(), domainImports.toArray(), platformImports);
}
@Override
public boolean eval() {
String[] actualValues = wrapper.getValues(elementLocator);
if (contains) {
mismatches = DataUtil.containsStrings(values, actualValues);
} else {
if (checkOrder) {
mismatches = DataUtil.expectEqualArrays(values, actualValues);
} else {
mismatches = DataUtil.expectEqualArraysIgnoreOrder(values, actualValues);
}
}
return (StringUtil.isEmpty(mismatches));
}
/**
* helper method to check for selectors of individual fields like "select x from y" or "{'select x
* from y where id=' + z}". For such selectors it returns true, otherwise false
*/
protected static boolean isIndividualSelector(String selector) {
if (selector == null) return false;
StreamTokenizer tokenizer = new StreamTokenizer(new StringReader(selector));
tokenizer.ordinaryChar('\'');
tokenizer.ordinaryChar('"');
int token;
try {
while ((token = tokenizer.nextToken()) != StreamTokenizer.TT_EOF) {
if (token == StreamTokenizer.TT_WORD)
return StringUtil.startsWithIgnoreCase(tokenizer.sval.trim(), "select");
}
} catch (IOException e) {
throw new RuntimeException("Unexpected error", e);
}
return false;
}
@SuppressWarnings({"unchecked", "rawtypes"})
private static Generator<Object[]> createSourceGeneratorFromObject(
ArrayTypeDescriptor descriptor,
BeneratorContext context,
Generator<Object[]> generator,
Object sourceObject) {
if (sourceObject instanceof StorageSystem) {
StorageSystem storage = (StorageSystem) sourceObject;
String selector = descriptor.getSelector();
String subSelector = descriptor.getSubSelector();
if (!StringUtil.isEmpty(subSelector))
generator =
WrapperFactory.applyHeadCycler(
new DataSourceGenerator(storage.query(subSelector, false, context)));
else generator = new DataSourceGenerator(storage.query(selector, false, context));
} else if (sourceObject instanceof EntitySource) {
DataSourceGenerator<Entity> entityGenerator =
new DataSourceGenerator<Entity>((EntitySource) sourceObject);
generator = WrapperFactory.applyConverter(entityGenerator, new Entity2ArrayConverter());
} else if (sourceObject instanceof Generator) {
generator = (Generator<Object[]>) sourceObject;
} else throw new ConfigurationError("Source type not supported: " + sourceObject.getClass());
return generator;
}
@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);
}
private static String postProcess(String base, boolean upperCase, String pattern, int length) {
if (upperCase) base = base.toUpperCase();
if (length > 0) base = StringUtil.padLeft(base, length, '0');
if (pattern != null) base = MessageFormat.format(pattern, base);
return base;
}
