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TSL2 Framework Descriptor (currency-handling, generic formatter, descriptors for beans, collections, actions and values)
/*
* File: $HeadURL$
* Id : $Id$
*
* created by: Tom
* created on: 31.03.2017
*
* Copyright: (c) Thomas Schneider 2017, all rights reserved
*/
package de.tsl2.nano.bean.annotation;
import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import de.tsl2.nano.action.IAction;
import de.tsl2.nano.bean.def.AttributeFinder;
import de.tsl2.nano.bean.def.Constraint;
import de.tsl2.nano.bean.def.MethodAction;
import de.tsl2.nano.collection.CollectionUtil;
import de.tsl2.nano.core.ENV;
import de.tsl2.nano.core.ITransformer;
import de.tsl2.nano.core.cls.ClassFinder;
import de.tsl2.nano.core.util.FileUtil;
import de.tsl2.nano.core.util.StringUtil;
import de.tsl2.nano.core.util.Util;
/**
* provides some value sets as allowed values for a Constraint Annotation
*
* @author Tom
* @version $Revision$
*/
public class ConstraintValueSet {
public static final String NULL_CLASS = Void.class.getName();
// pre-defined allowed value sets (providing a dynamic postfix after ':')
/** provides all classes of current classloader */
public static final String ALLOWED_CLASSES = "ALLOWED_CLASSES:";
/** provides all methods of current classloader */
public static final String ALLOWED_METHODS = "ALLOWED_METHODS:";
/** provides all fields of current classloader */
public static final String ALLOWED_FIELDS = "ALLOWED_FIELDS:";
/** provides all generated application classes */
public static final String ALLOWED_APPCLASSES = "ALLOWED_APPCLASSES";
/** provides all loaded beans */
public static final String ALLOWED_BEANS = "ALLOWED_BEANS:";
/** provides all loaded bean-attributes */
public static final String ALLOWED_BEANATTRS = "ALLOWED_BEANATTRS:";
/** provides all loaded bean-attributes (without bean prefix) */
public static final String ALLOWED_BEANATTR_NAMES = "ALLOWED_BEANATTR_NAMES:";
/** provides all generated application bean-attributes */
public static final String ALLOWED_APPBEANATTRS = "ALLOWED_APPBEANATTRS";
/** provides all files inside current ENV-path, matching given reg-exp postfix */
public static final String ALLOWED_ENVFILES = "ALLOWED_ENVFILES:";
/** reads from given fileName as postfix, and splits the data through '\n' */
public static final String ALLOWED_FROMFILE = "ALLOWED_FROMFILE:";
/**
* fill pre-defined value sets, given by Constraint annotation
*
* @param allowed Constraint annotation
* @return value set
*/
public static String[] preDefined(String[] allowed) {
LinkedList preAllowed = new LinkedList();
preAllowed.add(NULL_CLASS);
for (int i = 0; i < allowed.length; i++) {
if (allowed[i].equals(ALLOWED_CLASSES)) {
String exp = StringUtil.substring(allowed[i], ":", null);
preAllowed.addAll((Collection) CollectionUtil.getList(CollectionUtil.getTransforming(
ClassFinder.self().fuzzyFind(exp).values(), new ITransformer() {
@Override
public String transform(Class toTransform) {
return toTransform.getName();
}
}).iterator()));
} else if (allowed[i].equals(ALLOWED_APPCLASSES)) {
String exp = ENV.get("bean.generation.packagename", "");
preAllowed.addAll((Collection) CollectionUtil.getList(CollectionUtil.getTransforming(
ClassFinder.self().fuzzyFind(exp).values(), new ITransformer() {
@Override
public String transform(Class toTransform) {
return toTransform.getName();
}
}).iterator()));
} else if (allowed[i].equals(ALLOWED_METHODS)) {
String exp = StringUtil.substring(allowed[i], ":", null);
preAllowed.addAll(CollectionUtil
.toStringTransformed(ClassFinder.self().fuzzyFind(exp, Method.class, -1, null).values()));
} else if (allowed[i].equals(ALLOWED_FIELDS)) {
String exp = StringUtil.substring(allowed[i], ":", null);
preAllowed.addAll(CollectionUtil
.toStringTransformed(ClassFinder.self().fuzzyFind(exp, Field.class, -1, null).values()));
} else if (allowed[i].equals(ALLOWED_BEANS)) {
String exp = ENV.get("bean.generation.packagename", "");
preAllowed.addAll(CollectionUtil.toStringTransformed(new AttributeFinder().fuzzyFind(exp).values()));
} else if (allowed[i].equals(ALLOWED_BEANATTRS)) {
String exp = StringUtil.substring(allowed[i], ":", null);
preAllowed.addAll(CollectionUtil.toStringTransformed(new AttributeFinder().fuzzyFind(exp).values()));
} else if (allowed[i].equals(ALLOWED_APPBEANATTRS)) {
String exp = ENV.get("bean.generation.packagename", "");
preAllowed.addAll(CollectionUtil.toStringTransformed(new AttributeFinder().fuzzyFind(exp).values()));
} else if (allowed[i].equals(ALLOWED_BEANATTR_NAMES)) {
String exp = StringUtil.substring(allowed[i], ":", null);
preAllowed.addAll((Collection) CollectionUtil.getList(CollectionUtil.getTransforming(
new AttributeFinder().fuzzyFind(exp).values(),
new ITransformer() {
@Override
public String transform(String toTransform) {
return StringUtil.substring(toTransform, ".", null, true);
}
}).iterator()));
} else if (allowed[i].startsWith(ALLOWED_ENVFILES)) {
String regExp = StringUtil.substring(allowed[i], ":", null);
List files = FileUtil.getTreeFiles(ENV.getConfigPath(), regExp, false);
preAllowed.addAll(CollectionUtil.toStringTransformed(files));
} else if (allowed[i].startsWith(ALLOWED_FROMFILE)) {
String fileName = StringUtil.substring(allowed[i], ":", null);
String data = String.valueOf(FileUtil.getFileData(fileName, null));
preAllowed.addAll(Arrays.asList(data.split("\n")));
} else {
preAllowed.add(allowed[i]);
}
}
String[] values = preAllowed.toArray(new String[0]);
Arrays.sort(values);
return values;
}
public static Object transformEmptyToVoid(IAction a, int parameterIndex, Object value) {
if (a instanceof MethodAction) {
MethodAction ma = (MethodAction)a;
Constraint c = ma.getConstraints() != null && ma.getConstraints().length > parameterIndex ? ma.getConstraints()[parameterIndex] : null;
if (c != null && c.getAllowedValues() != null && c.getAllowedValues().contains(Void.class.getName()))
return value instanceof String && Util.isEmpty(value) ? NULL_CLASS : value;
}
return value;
}
}