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JMapper Framework is a java bean mapper based on javassist. JMapper exposes
interesting features as relational mapping, dynamic conversions and more
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/**
* Copyright (C) 2012 - 2016 Alessandro Vurro.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.googlecode.jmapper.xml;
import static com.googlecode.jmapper.util.FilesManager.fullPathOf;
import static com.googlecode.jmapper.util.FilesManager.isPath;
import static com.googlecode.jmapper.util.FilesManager.readAtDevelopmentTime;
import static com.googlecode.jmapper.util.FilesManager.readAtRuntime;
import static com.googlecode.jmapper.util.GeneralUtility.*;
import static com.googlecode.jmapper.util.ClassesManager.*;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.googlecode.jmapper.config.Error;
import com.googlecode.jmapper.config.JmapperLog;
import com.googlecode.jmapper.conversions.explicit.ConversionMethod;
import com.googlecode.jmapper.exceptions.XmlConversionNameException;
import com.googlecode.jmapper.exceptions.XmlConversionParameterException;
import com.googlecode.jmapper.exceptions.XmlConversionTypeException;
import com.googlecode.jmapper.operations.beans.MappedField;
import com.googlecode.jmapper.util.FilesManager;
import com.googlecode.jmapper.xml.beans.XmlAttribute;
import com.googlecode.jmapper.xml.beans.XmlClass;
import com.googlecode.jmapper.xml.beans.XmlConversion;
import com.googlecode.jmapper.xml.beans.XmlJmapper;
/**
* XML exposes utility methods for managing the XML file.
*
* @author Alessandro Vurro
*
*/
public final class XML {
/**
* Xml file can be loaded in two ways: at runtime and development time.
* @param atRuntime true if xml file must be loaded at runtime, false at development time
* @param xmlPath path of xml file
* @throws IOException other cases
* @throws MalformedURLException in case of malformed xml path
*/
//TODO XML -> bisogna differenziare da Path e contenuto
// inoltre gli stessi errori si hanno con la configurazione API
// quindi sarebbe meglio generalizzarli
public XML(boolean atRuntime, String xmlPath) throws MalformedURLException, IOException{
if(!isNull(xmlPath)){
xmlJmapper = atRuntime?readAtRuntime(xmlPath):readAtDevelopmentTime(xmlPath);
if(isPath(xmlPath))
this.xmlPath = atRuntime?xmlPath:fullPathOf(xmlPath);
else
this.xmlPath = "";//TODO XML -> scrivere il messaggio da visualizzare
}
if(isNull(xmlJmapper))xmlJmapper = new XmlJmapper();
if(isNull(xmlJmapper.classes))xmlJmapper.classes = new ArrayList();
}
/**
* Default behavior
*/
public XML(){
xmlJmapper = new XmlJmapper();
xmlJmapper.classes = new ArrayList();
}
/**
* Returns an XStream version of this XML.
* @return xstream bean
*/
public XmlJmapper toXStream(){
return xmlJmapper;
}
/** xml path */
private String xmlPath;
/** xmlJmapper object */
private XmlJmapper xmlJmapper;
/**
* Returns the xml path of this object.
* @return xml path
*/
public String getXmlPath(){
return xmlPath;
}
/**
* True if xml path has been defined, false otherwise.
* @return true if xml path has been defined, false otherwise
*/
public boolean exists(){
return xmlPath != null;
}
/**
* Setting of xml path.
* @param aXmlPath xml path
* @return this instance of XML
*/
public XML setXmlPath(String aXmlPath){
xmlPath = aXmlPath;
return this;
}
/** @return a Map with class name as key and a the global as value */
public Map loadGlobals(){
Map map = new HashMap();
try{ // if xml mapping file isn't empty
if(!isEmpty(xmlJmapper.classes))
for (XmlClass xmlClass : xmlJmapper.classes)
if(xmlClass.global != null)
map.put(xmlClass.name, Converter.toGlobal(xmlClass.global));
}catch (Exception e) {JmapperLog.error(e);}
return map;
}
/** @return a Map with class name as key and a list of Attributes as value */
public Map> loadAttributes(){
Map> map = new HashMap>();
try{ // if xml mapping file isn't empty
if(!isEmpty(xmlJmapper.classes))
for (XmlClass xmlClass : xmlJmapper.classes) {
List attributes = new ArrayList();
if(!isEmpty(xmlClass.attributes))
for (XmlAttribute xmlAttribute : xmlClass.attributes)
attributes.add(Converter.toAttribute(xmlAttribute));
map.put(xmlClass.name, attributes);
}
}catch (Exception e) {JmapperLog.error(e);}
return map;
}
/** @return a Map with class name as key and a list of Conversions as value */
public Map> conversionsLoad(){
Map> map = new HashMap>();
try{ // if xml mapping file isn't empty
if(!isEmpty(xmlJmapper.classes))
for (XmlClass xmlClass : xmlJmapper.classes) {
List conversions = new ArrayList();
if(!isEmpty(xmlClass.conversions))
for (XmlConversion xmlConversion : xmlClass.conversions)
try{ conversions.add(Converter.toConversionMethod(xmlConversion));
}catch (XmlConversionNameException e) {
Error.xmlConversionNameUndefined(this.xmlPath,xmlClass.name);
}catch (XmlConversionTypeException e) {
Error.xmlConversionTypeIncorrect(xmlConversion.name,this.xmlPath,xmlClass.name,xmlConversion.type);
}catch (XmlConversionParameterException e) {
Error.improperUseOfTheParameter(xmlConversion.name,this.xmlPath,xmlClass.name);
}
// enrich map only if for this class there are conversions
if(!conversions.isEmpty())
map.put(xmlClass.name, conversions);
}
}catch (Exception e) {JmapperLog.error(e);}
return map;
}
/**
* Returns the conversions method belonging to clazz.
* @param clazz class to check
* @return the conversion method list
*/
public List getConversionMethods (Class clazz){
List conversions = new ArrayList();
Map> conversionsMap = this.conversionsLoad();
for (Class classToCheck : getAllsuperClasses(clazz)){
List methods = conversionsMap.get(classToCheck.getName());
if(methods != null)conversions.addAll(methods);
}
return conversions;
}
/**
* Returns a list with the classes names presents in xml mapping file.
* @return a list with the classes names presents in xml mapping file
*/
public List getClasses(){
List classes = new ArrayList();
for (XmlClass xmlClass : xmlJmapper.classes)
classes.add(xmlClass.name);
return classes;
}
/**
* Writes the xml mapping file starting from xmlJmapper object.
* @return this instance of XML
*/
public XML write(){
try { FilesManager.write(xmlJmapper, xmlPath);
} catch (IOException e) {JmapperLog.error(e);}
return this;
}
/**
* This method adds to the xml configuration file, the class given in input.
* @param aClass add This Class to Xml Configuration file
* @return this instance
*/
public XML addAnnotatedClass(Class aClass){
checksClassAbsence(aClass);
addClass(aClass);
return this;
}
/**
* This method adds aClass with the attributes given as input to XML configuration file.
* It's mandatory define at least one attribute.
* @param aClass Class to adds
* @param attributes attributes of Class
* @return this instance
*/
public XML addClass(Class aClass,Attribute[] attributes){
checksClassAbsence(aClass);
XmlClass xmlClass = new XmlClass();
xmlClass.name = aClass.getName();
xmlClass.attributes = new ArrayList();
xmlJmapper.classes.add(xmlClass);
addAttributes(aClass, attributes);
return this;
}
/**
* This method adds aClass with this global mapping and attributes to XML configuration file.
* It's mandatory define at least one attribute, global is optional instead.
* @param aClass Class to adds
* @param global global mapping
* @return this instance
*/
public XML addClass(Class aClass, Global global){
checksClassAbsence(aClass);
XmlClass xmlClass = new XmlClass();
xmlClass.name = aClass.getName();
xmlJmapper.classes.add(xmlClass);
addGlobal(aClass, global);
return this;
}
/**
* This method adds aClass with this global mapping and attributes to XML configuration file.
* It's mandatory define at least one attribute, global is optional instead.
* @param aClass Class to adds
* @param global global mapping
* @param attributes attributes of Class
* @return this instance
*/
public XML addClass(Class aClass, Global global, Attribute[] attributes){
XmlClass xmlClass = new XmlClass();
xmlClass.name = aClass.getName();
xmlJmapper.classes.add(xmlClass);
if(!isEmpty(attributes)){
xmlClass.attributes = new ArrayList();
addAttributes(aClass, attributes);
}
if(global != null)
addGlobal(aClass, global);
return this;
}
/**
* This method remove a specific Class from Xml Configuration File
* @param aClass class to delete
* @return this instance of XML
*/
public XML deleteClass(Class aClass){
boolean isRemoved = xmlJmapper.classes.remove(new XmlClass(aClass.getName()));
if(!isRemoved)Error.xmlClassInexistent(this.xmlPath,aClass);
return this;
}
/**
* This method adds the global to an existing Class.
* @param aClass class to edit
* @param global global to add
* @return this instance of XML
*/
public XML addGlobal(Class aClass,Global global){
checksGlobalAbsence(aClass);
findXmlClass(aClass).global = Converter.toXmlGlobal(global);
return this;
}
/**
* This method deletes the global to an existing Class.
* @param aClass class to delete
* @return this instance of XML
*/
public XML deleteGlobal(Class aClass){
checksGlobalExistence(aClass);
XmlClass xmlClass = findXmlClass(aClass);
if(isEmpty(xmlClass.attributes)) deleteClass(aClass);
else xmlClass.global = null;
return this;
}
/**
* This method adds the attributes to an existing Class.
* @param aClass class to which add attributes
* @param attributes attributes to add
* @return this instance of XML
*/
public XML addAttributes(Class aClass,Attribute[] attributes){
checksAttributesExistence(aClass,attributes);
for (Attribute attribute : attributes) {
if(attributeExists(aClass,attribute)) Error.xmlAttributeExistent(this.xmlPath,attribute, aClass);
findXmlClass(aClass).attributes.add(Converter.toXmlAttribute(attribute));
}
return this;
}
/**
* This method deletes the attributes to an existing Class.
* @param aClass class to which delete the attributes
* @param attributes attributes to delete
* @return this instance of XML
*/
public XML deleteAttributes(Class aClass,String[] attributes){
checksAttributesExistence(aClass,attributes);
if(isEmpty(findXmlClass(aClass).attributes) || findXmlClass(aClass).attributes.size()<=1)
Error.xmlWrongMethod(aClass);
for (String attributeName : attributes) {
XmlAttribute attribute = null;
for (XmlAttribute xmlAttribute : findXmlClass(aClass).attributes)
if(xmlAttribute.name.equals(attributeName))
attribute = xmlAttribute;
if(attribute == null) Error.xmlAttributeInexistent(this.xmlPath,attributeName,aClass);
findXmlClass(aClass).attributes.remove(attribute);
}
return this;
}
/**
* Adds an annotated Class to xmlJmapper structure.
* @param aClass Class to convert to XmlClass
* @return this instance of XML
*/
private XML addClass(Class aClass){
xmlJmapper.classes.add(Converter.toXmlClass(aClass));
return this;
}
/**
* Verifies that the global mapping exist in aClass.
* @param aClass class to check
* @return this intance of XML
*/
private XML checksGlobalExistence(Class aClass){
if(!classExists(aClass)) Error.xmlClassInexistent(this.xmlPath,aClass);
if(findXmlClass(aClass).global==null)
Error.xmlGlobalInexistent(aClass);
return this;
}
/**
* Verifies that the global mapping exist in aClass.
* @param aClass class to check
* @return this intance of XML
*/
private XML checksGlobalAbsence(Class aClass){
if(!classExists(aClass)) Error.xmlClassInexistent(this.xmlPath,aClass);
if(findXmlClass(aClass).global!=null)
Error.xmlGlobalExistent(aClass);
return this;
}
/**
* Verifies that the attributes exist in aClass.
* @param aClass Class to check
* @param attributes attributes to check
* @return this instance of XML
*/
private XML checksAttributesExistence(Class aClass,Attribute[] attributes){
String[] attributesNames = new String[attributes.length];
for (int i = attributes.length; i --> 0;)
attributesNames[i] = attributes[i].getName();
checksAttributesExistence(aClass,attributesNames);
return this;
}
/**
* Verifies that the attributes exist in aClass.
* @param aClass Class to check
* @param attributes list of the names attributes to check.
* @return this instance of XML
*/
private XML checksAttributesExistence(Class aClass,String[] attributes){
if(!classExists(aClass)) Error.xmlClassInexistent(this.xmlPath,aClass);
for (String attributeName : attributes)
try{ aClass.getDeclaredField(attributeName); }
catch (Exception e){ Error.attributeInexistent(attributeName, aClass);}
return this;
}
/**
* Throws an exception if the class exist.
* @param aClass a Class to check
* @return this instance of XML
*/
private XML checksClassAbsence(Class aClass){
if(classExists(aClass))Error.xmlClassExistent(this.xmlPath,aClass);
return this;
}
/**
* verifies that this class exist in Xml Configuration File.
*
* @param aClass Class to verify
* @return this instance
*/
private boolean classExists(Class aClass) {
if(xmlJmapper.classes == null)return false;
return findXmlClass(aClass) !=null?true:false;
}
/**
* This method returns true if the attribute exist in the Class given in input, returns false otherwise.
* @param aClass Class of the Attribute
* @param attribute Attribute to check
* @return true if attribute exist, false otherwise
*/
private boolean attributeExists(Class aClass,Attribute attribute){
if(!classExists(aClass))return false;
for (XmlAttribute xmlAttribute : findXmlClass(aClass).attributes)
if(xmlAttribute.name.equals(attribute.getName()))return true;
return false;
}
/**
* Finds the Class, given in input, in the xml mapping file and returns a XmlClass instance if exist, null otherwise.
* @param aClass Class to finds
* @return a XmlClass if aClass exist in xml mapping file, null otherwise
*/
private XmlClass findXmlClass(Class aClass){
for (XmlClass xmlClass : xmlJmapper.classes)
if(xmlClass.name.equals(aClass.getName())) return xmlClass;
return null;
}
/**
* Returns true if the class is configured in xml (also checking the super classes), false otherwise.
* @param classToCheck class to check
* @return true if the class is configured in xml, false otherwise
*/
public boolean isInheritedMapped(Class classToCheck){
for (Class clazz : getAllsuperClasses(classToCheck))
if(isMapped(clazz))return true;
return false;
}
/**
* Returns true if the class is configured in xml, false otherwise.
* @param classToCheck class to check
* @return true if the class is configured in xml, false otherwise
*/
public boolean isMapped(Class classToCheck){
return !isNull(loadGlobals().get(classToCheck.getName()))
|| !isEmpty(loadAttributes().get(classToCheck.getName()));
}
/**
* Returns the Attribute relative to the configured field, null otherwise.
* @param configuredField field to find
* @param configuredClass class of field
* @return
*/
private Attribute getGlobalAttribute(MappedField configuredField, Class configuredClass){
Global global = null;
Map globals = loadGlobals();
for (Class clazz : getAllsuperClasses(configuredClass)) {
global = globals.get(clazz.getName());
if(!isNull(global))break;
}
if(!isNull(global) && !isNull(global.getAttributes()))
for (SimplyAttribute globalAttribute : global.getAttributes()) {
String name = globalAttribute.getName();
if(configuredField.getValue().getName().equals(name)){
String get = globalAttribute.getGet();
String set = globalAttribute.getSet();
if(!isNull(get) || !isNull(set))
return new Attribute(name, null, get, set, null, null);
}
}
return null;
}
/**
* Returns the Attribute relative to the configured field, null otherwise.
* @param configuredField field to find
* @param configuredClass class of field
* @return
*/
private Attribute getAttribute(MappedField configuredField, Class configuredClass){
// If configuredClass exists in XML configuration file
for (Class clazz : getAllsuperClasses(configuredClass))
if (isMapped(clazz))
// loads all configured attributes
for (Attribute attribute : loadAttributes().get(clazz.getName())) {
// verifies that exists the attribute written in XML in
// the configured Class
if (isNull(fieldName(clazz, attribute.getName())))
Error.attributeAbsent(clazz, attribute);
// if the field given in input isn't equal to xmlField
// continue with the cycle
if (attribute.getName().equals(configuredField.getValue().getName()))
return attribute;
}
return null;
}
/**
* Enrich configuredField with get and set define in xml configuration.
* @param configuredClass class of field
* @param configuredField configured field
* @return this
*/
public XML fillMappedField(Class configuredClass, MappedField configuredField) {
Attribute attribute = getGlobalAttribute(configuredField, configuredClass);
if(isNull(attribute))
attribute = getAttribute(configuredField, configuredClass);
if(!isNull(attribute)){
if(isEmpty(configuredField.getMethod()))
configuredField.getMethod(attribute.getGet());
if(isEmpty(configuredField.setMethod()))
configuredField.setMethod(attribute.getSet());
}
return this;
}
/**
* Enrich targetField with get and set define in xml configuration.
* @param configuredClass class of field
* @param configuredField configured field
* @param targetField the opposite field to enrich
* @return this
*/
public XML fillOppositeField(Class configuredClass, MappedField configuredField, MappedField targetField) {
Attribute attribute = null;
Global global = loadGlobals().get(configuredClass.getName());
if(!isNull(global)){
String value = global.getValue();
if(!isEmpty(value) && value.equals(targetField.getValue().getName())){
String get = global.getGet();
String set = global.getSet();
if(!isNull(get) || !isNull(set))
attribute = new Attribute(null,new Value(global.getValue(),get,set));
}
}
if(isNull(attribute))
attribute = getAttribute(configuredField, configuredClass);
if(!isNull(attribute)){
Value value = attribute.getValue();
// verifies value
if(!isNull(value))
if(targetField.getValue().getName().equals(value.getName())){
if(isEmpty(targetField.getMethod()))
targetField.getMethod(value.getGet());
if(isEmpty(targetField.setMethod()))
targetField.setMethod(value.getSet());
}
SimplyAttribute[] attributes = attribute.getAttributes();
// verifies attributes
if(!isNull(attributes))
for (SimplyAttribute targetAttribute : attributes)
if(targetField.getValue().getName().equals(targetAttribute.getName())){
if(isEmpty(targetField.getMethod()))
targetField.getMethod(targetAttribute.getGet());
if(isEmpty(targetField.setMethod()))
targetField.setMethod(targetAttribute.getSet());
}
}
return this;
}
}