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package com.sun.tools.xjc.reader.dtd.bindinfo;
import java.io.IOException;
import java.io.StringReader;
import java.util.Map;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JClassAlreadyExistsException;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JPackage;
import com.sun.codemodel.JPrimitiveType;
import com.sun.codemodel.JType;
import com.sun.codemodel.JVar;
import com.sun.tools.xjc.model.CAdapter;
import com.sun.tools.xjc.model.CBuiltinLeafInfo;
import com.sun.tools.xjc.model.TypeUse;
import com.sun.tools.xjc.model.TypeUseFactory;
import com.sun.xml.bind.v2.util.XmlFactory;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
/**
* <conversion> declaration in the binding file.
* This declaration declares a conversion by user-specified methods.
*/
public class BIUserConversion implements BIConversion
{
/**
* Wraps a given <conversion> element in the binding file.
*/
BIUserConversion( BindInfo bi, Element _e ) {
this.owner = bi;
this.e = _e;
}
private static void add( Map m, BIConversion c ) {
m.put( c.name(), c );
}
/** Adds all built-in conversions into the given map. */
static void addBuiltinConversions( BindInfo bi, Map m ) {
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
add( m, new BIUserConversion( bi, parse("")));
}
private static Element parse(String text) {
try {
//this is parsing well known schemas, do not configure secure processing - always true
DocumentBuilderFactory dbf = XmlFactory.createDocumentBuilderFactory(false);
InputSource is = new InputSource(new StringReader(text));
return dbf.newDocumentBuilder().parse(is).getDocumentElement();
} catch (SAXException x) {
throw new Error(x);
} catch (IOException x) {
throw new Error(x);
} catch (ParserConfigurationException x) {
throw new Error(x);
}
}
/** The owner {@link BindInfo} object to which this object belongs. */
private final BindInfo owner;
/** <conversion> element which this object is wrapping. */
private final Element e;
/** Gets the location where this declaration is declared. */
public Locator getSourceLocation() {
return DOMLocator.getLocationInfo(e);
}
/** Gets the conversion name. */
public String name() { return DOMUtil.getAttribute(e,"name"); }
/** Gets a transducer for this conversion. */
public TypeUse getTransducer() {
String ws = DOMUtil.getAttribute(e,"whitespace");
if(ws==null) ws = "collapse";
String type = DOMUtil.getAttribute(e,"type");
if(type==null) type=name();
JType t=null;
int idx = type.lastIndexOf('.');
if(idx<0) {
// no package name is specified.
try {
t = JPrimitiveType.parse(owner.codeModel,type);
} catch( IllegalArgumentException ex ) {
// otherwise treat it as a class name in the current package
type = owner.getTargetPackage().name()+'.'+type;
}
}
if(t==null) {
try {
// TODO: revisit this later
JDefinedClass cls = owner.codeModel._class(type);
cls.hide();
t = cls;
} catch( JClassAlreadyExistsException ex ) {
t = ex.getExistingClass();
}
}
String parse = DOMUtil.getAttribute(e,"parse");
if(parse==null) parse="new";
String print = DOMUtil.getAttribute(e,"print");
if(print==null) print="toString";
JDefinedClass adapter = generateAdapter(owner.codeModel, parse, print, t.boxify());
// XmlJavaType customization always converts between string and an user-defined type.
return TypeUseFactory.adapt(CBuiltinLeafInfo.STRING,new CAdapter(adapter));
}
// TODO: anyway to reuse this code between XML Schema compiler?
private JDefinedClass generateAdapter(JCodeModel cm, String parseMethod, String printMethod, JClass inMemoryType) {
JDefinedClass adapter = null;
int id = 1;
while(adapter==null) {
try {
JPackage pkg = owner.getTargetPackage();
adapter = pkg._class("Adapter"+id);
} catch (JClassAlreadyExistsException ex) {
// try another name in search for an unique name.
// this isn't too efficient, but we expect people to usually use
// a very small number of adapters.
id++;
}
}
adapter._extends(cm.ref(XmlAdapter.class).narrow(String.class).narrow(inMemoryType));
JMethod unmarshal = adapter.method(JMod.PUBLIC, inMemoryType, "unmarshal");
JVar $value = unmarshal.param(String.class, "value");
JExpression inv;
if( parseMethod.equals("new") ) {
// "new" indicates that the constructor of the target type
// will do the unmarshalling.
// RESULT: new ()
inv = JExpr._new(inMemoryType).arg($value);
} else {
int idx = parseMethod.lastIndexOf('.');
if(idx<0) {
// parseMethod specifies the static method of the target type
// which will do the unmarshalling.
// because of an error check at the constructor,
// we can safely assume that this cast works.
inv = inMemoryType.staticInvoke(parseMethod).arg($value);
} else {
inv = JExpr.direct(parseMethod+"(value)");
}
}
unmarshal.body()._return(inv);
JMethod marshal = adapter.method(JMod.PUBLIC, String.class, "marshal");
$value = marshal.param(inMemoryType,"value");
int idx = printMethod.lastIndexOf('.');
if(idx<0) {
// printMethod specifies a method in the target type
// which performs the serialization.
// RESULT: .()
inv = $value.invoke(printMethod);
} else {
// RESULT: .()
inv = JExpr.direct(printMethod+"(value)");
}
marshal.body()._return(inv);
return adapter;
}
}
