@SuppressWarnings("deprecation")
private JRExprFunctionBean createJRFunction(List<Method> methods, Class<?> clazz) {
JRExprFunctionBean funct = new JRExprFunctionBean(clazz.getCanonicalName());
// The first instance is the one annotated with @JRFunction
// that maintains all the necessary infos to prepare the skeleton of the function bean
Method first = methods.get(0);
funct.setId(first.getName());
funct.setReturnType(first.getReturnType());
String functionMessBundle = getFunctionMessBundle(clazz);
FunctionMessagesBundle functionMessBundleAnn =
first.getAnnotation(FunctionMessagesBundle.class);
if (functionMessBundleAnn == null) {
functionMessBundleAnn = clazz.getAnnotation(FunctionMessagesBundle.class);
}
if (functionMessBundleAnn != null) {
functionMessBundle = functionMessBundleAnn.value();
}
String functionName = null;
String functionDescription = null;
Function newFunctionAnnotation = first.getAnnotation(Function.class);
if (newFunctionAnnotation == null) {
JRExprFunction functionAnnotation = first.getAnnotation(JRExprFunction.class);
functionName = functionAnnotation.name();
functionDescription = functionAnnotation.description();
} else {
functionName = newFunctionAnnotation.value();
String name =
messageUtil
.getMessageProvider(functionMessBundle)
.getMessage(
clazz.getName() + "." + funct.getId() + ".name",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale
if (name != null) {
functionName = name;
}
String description =
messageUtil
.getMessageProvider(functionMessBundle)
.getMessage(
clazz.getName() + "." + funct.getId() + ".description",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale
if (description != null) {
functionDescription = description;
}
}
funct.setName(functionName);
funct.setDescription(functionDescription);
JRExprFunctionCategories functionCategoriesAnnotation =
first.getAnnotation(JRExprFunctionCategories.class);
if (functionCategoriesAnnotation == null) {
FunctionCategories newFunctionCategoriesAnnotation =
first.getAnnotation(FunctionCategories.class);
if (newFunctionCategoriesAnnotation == null) {
newFunctionCategoriesAnnotation = clazz.getAnnotation(FunctionCategories.class);
}
if (newFunctionCategoriesAnnotation != null) {
Class<?>[] categories = newFunctionCategoriesAnnotation.value();
for (Class<?> categoryClass : categories) {
String categoryId = categoryClass.getName();
String categoryName = null;
String categoryDescription = null;
FunctionCategory functionCategory = categoryClass.getAnnotation(FunctionCategory.class);
if (functionCategory != null) {
String id = functionCategory.value();
if (id != null && id.trim().length() > 0) {
categoryId = id;
}
categoryName = functionCategory.value();
}
String categoryMessBundle = getFunctionMessBundle(categoryClass);
FunctionMessagesBundle categMessBundleAnn =
categoryClass.getAnnotation(FunctionMessagesBundle.class);
if (categMessBundleAnn != null) {
categoryMessBundle = categMessBundleAnn.value();
}
String name =
messageUtil
.getMessageProvider(categoryMessBundle)
.getMessage(
categoryId + ".name",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale and optimize by getting
// localized provider everywhere
if (name != null) {
categoryName = name;
}
String description =
messageUtil
.getMessageProvider(categoryMessBundle)
.getMessage(
categoryId + ".description",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale
if (description != null) {
categoryDescription = description;
}
JRExprFunctionCategoryBean categDescriptor = new JRExprFunctionCategoryBean();
categDescriptor.setId(categoryId);
categDescriptor.setName(categoryName);
categDescriptor.setDescription(categoryDescription);
funct.getCategories().add(categDescriptor);
}
}
} else {
for (String category : functionCategoriesAnnotation.value()) {
JRExprFunctionCategoryBean categDescriptor = new JRExprFunctionCategoryBean();
categDescriptor.setId(category);
categDescriptor.setName(
messageUtil
.getMessageProvider("MessagesBundle")
.getMessage("Category." + category + ".display", null, Locale.getDefault()));
categDescriptor.setDescription(
messageUtil
.getMessageProvider("MessagesBundle")
.getMessage("Category." + category + ".description", null, Locale.getDefault()));
funct.getCategories().add(categDescriptor);
}
}
FunctionParameters newParametersAnnotation = first.getAnnotation(FunctionParameters.class);
if (newParametersAnnotation == null) {
JRExprFunctionParameters parametersAnnotation =
first.getAnnotation(JRExprFunctionParameters.class);
if (parametersAnnotation != null) {
for (JRExprFunctionParameter param : parametersAnnotation.value()) {
// Get basic info from the annotation
JRExprFunctionParameterBean paramDescriptor = new JRExprFunctionParameterBean();
paramDescriptor.setName(param.name());
paramDescriptor.setDescription(param.description());
funct.getParameters().add(paramDescriptor);
}
}
} else {
for (FunctionParameter param : newParametersAnnotation.value()) {
// Get basic info from the annotation
JRExprFunctionParameterBean paramDescriptor = new JRExprFunctionParameterBean();
String parameterId = param.value();
String parameterName = null;
String parameterDescription = null;
if (parameterId != null && parameterId.trim().length() > 0) {
String name =
messageUtil
.getMessageProvider(functionMessBundle)
.getMessage(
clazz.getName() + "." + funct.getId() + "." + parameterId + ".name",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale
if (name != null) {
parameterName = name;
}
String description =
messageUtil
.getMessageProvider(functionMessBundle)
.getMessage(
clazz.getName() + "." + funct.getId() + "." + parameterId + ".description",
null,
Locale.getDefault()); // FIXMEFUNCT provide locale
if (description != null) {
parameterDescription = description;
}
}
paramDescriptor.setName(parameterName);
paramDescriptor.setDescription(parameterDescription);
funct.getParameters().add(paramDescriptor);
}
}
// Now computes the mandatory and cardinality of the parameters
int paramIndex = 0;
int paramsNum = funct.getParameters().size();
for (int i = 0; i < methods.size() && paramIndex < paramsNum; i++) {
Method currMethod = methods.get(i);
Class<?>[] parameterTypes = currMethod.getParameterTypes();
boolean isOptional =
(i == 0) ? false : true; // all parameters of the first method are for sure mandatory
for (int j = paramIndex; j < parameterTypes.length; j++, paramIndex++) {
boolean isMulti = parameterTypes[j].isArray();
JRExprFunctionParameterBean paramFunctBean = funct.getParameters().get(paramIndex);
if (paramFunctBean != null) {
paramFunctBean.setOptional(isOptional);
paramFunctBean.setMulti(isMulti);
paramFunctBean.setParameterType(parameterTypes[j]);
} else {
// ERROR params number mismatch in descriptions/names/types
// TODO issue Exception or log error (?!)
}
}
}
return funct;
}
private JRExprAnnotationsUtils(JasperReportsContext jasperReportsContext) {
this.jasperReportsContext = jasperReportsContext;
this.messageUtil = MessageUtil.getInstance(jasperReportsContext);
}