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/*
* GoogleBaseParser.java
*
* Created on November 17, 2005, 11:31 AM
*
* This library is provided under dual licenses.
* You may choose the terms of the Lesser General Public License or the Apache
* License at your discretion.
*
* Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
* 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.sun.syndication.feed.module.base.io;
import com.sun.syndication.feed.module.Module;
import com.sun.syndication.feed.module.base.GoogleBase;
import com.sun.syndication.feed.module.base.GoogleBaseImpl;
import com.sun.syndication.io.ModuleParser;
import com.sun.syndication.feed.module.base.types.CurrencyEnumeration;
import com.sun.syndication.feed.module.base.types.DateTimeRange;
import com.sun.syndication.feed.module.base.types.FloatUnit;
import com.sun.syndication.feed.module.base.types.GenderEnumeration;
import com.sun.syndication.feed.module.base.types.IntUnit;
import com.sun.syndication.feed.module.base.types.PaymentTypeEnumeration;
import com.sun.syndication.feed.module.base.types.PriceTypeEnumeration;
import com.sun.syndication.feed.module.base.types.ShippingType;
import com.sun.syndication.feed.module.base.types.Size;
import com.sun.syndication.feed.module.base.types.YearType;
import org.jdom.Element;
import org.jdom.Namespace;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.lang.reflect.Array;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* DOCUMENT ME!
*
* @author Robert "kebernet"
* Cooper
* @version $Revision: 1.3 $
*/
public class GoogleBaseParser implements ModuleParser {
private static final Logger log = Logger.getAnonymousLogger();
public static final char[] INTEGER_CHARS = "-1234567890".toCharArray();
public static final char[] FLOAT_CHARS = "-1234567890.".toCharArray();
public static final SimpleDateFormat SHORT_DT_FMT = new SimpleDateFormat("yyyy-MM-dd");
public static final SimpleDateFormat LONG_DT_FMT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
static final Namespace NS = Namespace.getNamespace(GoogleBase.URI);
static final Properties PROPS2TAGS = new Properties();
static PropertyDescriptor[] pds = null;
static {
try {
pds = Introspector.getBeanInfo(GoogleBaseImpl.class).getPropertyDescriptors();
PROPS2TAGS.load(GoogleBaseParser.class.getResourceAsStream("/com/sun/syndication/feed/module/base/io/tags.properties"));
} catch(IOException e) {
e.printStackTrace();
log.log(Level.SEVERE,"Unable to read properties file for Google Base tags!",e);
} catch(IntrospectionException e) {
e.printStackTrace();
log.log(Level.SEVERE,"Unable to get property descriptors for GoogleBaseImpl!",e);
}
}
/**
* Creates a new instance of GoogleBaseParser
*/
public GoogleBaseParser() {
super();
}
public Module parse(Element element) {
HashMap tag2pd = new HashMap();
GoogleBaseImpl module = new GoogleBaseImpl();
try {
for(int i = 0; i < pds.length; i++) {
PropertyDescriptor pd = pds[i];
String tagName = GoogleBaseParser.PROPS2TAGS.getProperty(pd.getName());
if(tagName == null) {
log.log(Level.FINE,"Property: " + pd.getName() + " doesn't have a tag mapping. ");
} else {
tag2pd.put(tagName,pd);
}
}
} catch(Exception e) {
throw new RuntimeException("Exception building tag to property mapping. ",e);
}
List children = element.getChildren();
Iterator it = children.iterator();
while(it.hasNext()) {
Element child = (Element)it.next();
if(child.getNamespace().equals(GoogleBaseParser.NS)) {
PropertyDescriptor pd = (PropertyDescriptor)tag2pd.get(child.getName());
if(pd != null) {
try {
this.handleTag(child,pd,module);
} catch(Exception e) {
log.log(Level.WARNING,"Unable to handle tag: " + child.getName(),e);
e.printStackTrace();
}
}
}
}
return module;
}
public static String stripNonValidCharacters(char[] validCharacters,String input) {
StringBuffer newString = new StringBuffer();
for(int i = 0; i < input.length(); i++) {
for(int j = 0; j < validCharacters.length; j++) {
if(input.charAt(i) == validCharacters[j]) {
newString.append(validCharacters[j]);
}
}
}
return newString.toString();
}
public String getNamespaceUri() {
return GoogleBase.URI;
}
private void handleTag(Element tag,PropertyDescriptor pd,GoogleBase module) throws Exception {
Object tagValue = null;
if((pd.getPropertyType() == Integer.class)||(pd.getPropertyType().getComponentType() == Integer.class)) {
tagValue = new Integer(GoogleBaseParser.stripNonValidCharacters(GoogleBaseParser.INTEGER_CHARS,tag.getText()));
} else if((pd.getPropertyType() == Float.class)||(pd.getPropertyType().getComponentType() == Float.class)) {
tagValue = new Float(GoogleBaseParser.stripNonValidCharacters(GoogleBaseParser.FLOAT_CHARS,tag.getText()));
} else if((pd.getPropertyType() == String.class)||(pd.getPropertyType().getComponentType() == String.class)) {
tagValue = tag.getText();
} else if((pd.getPropertyType() == URL.class)||(pd.getPropertyType().getComponentType() == URL.class)) {
tagValue = new URL(tag.getText().trim());
} else if((pd.getPropertyType() == Boolean.class)||(pd.getPropertyType().getComponentType() == Boolean.class)) {
tagValue = new Boolean(tag.getText().trim());
} else if((pd.getPropertyType() == Date.class)||(pd.getPropertyType().getComponentType() == Date.class)) {
String text = tag.getText().trim();
if(text.length() > 10) {
tagValue = GoogleBaseParser.LONG_DT_FMT.parse(text);
} else {
tagValue = GoogleBaseParser.SHORT_DT_FMT.parse(text);
}
} else if((pd.getPropertyType() == IntUnit.class)||(pd.getPropertyType().getComponentType() == IntUnit.class)) {
tagValue = new IntUnit(tag.getText());
} else if((pd.getPropertyType() == FloatUnit.class)||(pd.getPropertyType().getComponentType() == FloatUnit.class)) {
tagValue = new FloatUnit(tag.getText());
} else if((pd.getPropertyType() == DateTimeRange.class)||(pd.getPropertyType().getComponentType() == DateTimeRange.class)) {
tagValue = new DateTimeRange(LONG_DT_FMT.parse(tag.getChild("start",GoogleBaseParser.NS).getText().trim()),LONG_DT_FMT.parse(tag.getChild("end",GoogleBaseParser.NS).getText().trim()));
} else if((pd.getPropertyType() == ShippingType.class)||(pd.getPropertyType().getComponentType() == ShippingType.class)) {
FloatUnit price = new FloatUnit(tag.getChild("price",GoogleBaseParser.NS).getText().trim());
ShippingType.ServiceEnumeration service = ShippingType.ServiceEnumeration.findByValue(tag.getChild("service",GoogleBaseParser.NS).getText().trim());
if(service == null) {
service = ShippingType.ServiceEnumeration.STANDARD;
}
String country = tag.getChild("country",GoogleBaseParser.NS).getText().trim();
tagValue = new ShippingType(price,service,country);
} else if((pd.getPropertyType() == PaymentTypeEnumeration.class)||(pd.getPropertyType().getComponentType() == PaymentTypeEnumeration.class)) {
tagValue = PaymentTypeEnumeration.findByValue(tag.getText().trim());
} else if((pd.getPropertyType() == PriceTypeEnumeration.class)||(pd.getPropertyType().getComponentType() == PriceTypeEnumeration.class)) {
tagValue = PriceTypeEnumeration.findByValue(tag.getText().trim());
} else if((pd.getPropertyType() == CurrencyEnumeration.class)||(pd.getPropertyType().getComponentType() == CurrencyEnumeration.class)) {
tagValue = CurrencyEnumeration.findByValue(tag.getText().trim());
} else if((pd.getPropertyType() == GenderEnumeration.class)||(pd.getPropertyType().getComponentType() == GenderEnumeration.class)) {
tagValue = GenderEnumeration.findByValue(tag.getText().trim());
} else if((pd.getPropertyType() == YearType.class)||(pd.getPropertyType().getComponentType() == YearType.class)) {
tagValue = new YearType(tag.getText().trim());
} else if((pd.getPropertyType() == Size.class)||(pd.getPropertyType().getComponentType() == Size.class)) {
tagValue = new Size(tag.getText().trim());
}
if(!pd.getPropertyType().isArray()) {
pd.getWriteMethod().invoke(module,new Object[] {tagValue});
} else {
Object[] current = (Object[])pd.getReadMethod().invoke(module,(Object[])null);
int newSize = (current == null) ? 1 : (current.length + 1);
Object setValue = Array.newInstance(pd.getPropertyType().getComponentType(),newSize);
int i = 0;
for(; (current != null)&&(i < current.length); i++) {
Array.set(setValue,i,current[i]);
}
Array.set(setValue,i,tagValue);
pd.getWriteMethod().invoke(module,new Object[] {setValue});
}
}
}
