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package com.sun.xml.ws.fault;

import com.sun.xml.bind.marshaller.NamespacePrefixMapper;
import com.sun.xml.ws.developer.ServerSideException;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.PropertyException;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
import java.util.ArrayList;
import java.util.List;

/**
 * JAXB-bound bean that captures the exception and its call stack.
 *
 * 

* This is used to capture the stack trace of the server side error and * send that over to the client. * * @author Kohsuke Kawaguchi */ @XmlRootElement(namespace=ExceptionBean.NS,name=ExceptionBean.LOCAL_NAME) final class ExceptionBean { /** * Converts the given {@link Throwable} into an XML representation * and put that as a DOM tree under the given node. */ public static void marshal( Throwable t, Node parent ) throws JAXBException { Marshaller m = JAXB_CONTEXT.createMarshaller(); try { m.setProperty("com.sun.xml.bind.namespacePrefixMapper",nsp); } catch (PropertyException pe) {} m.marshal(new ExceptionBean(t), parent ); } /** * Does the reverse operation of {@link #marshal(Throwable, Node)}. Constructs an * {@link Exception} object from the XML. */ public static ServerSideException unmarshal( Node xml ) throws JAXBException { ExceptionBean e = (ExceptionBean) JAXB_CONTEXT.createUnmarshaller().unmarshal(xml); return e.toException(); } @XmlAttribute(name="class") public String className; @XmlElement public String message; @XmlElementWrapper(namespace=NS,name="stackTrace") @XmlElement(namespace=NS,name="frame") public List stackTrace = new ArrayList(); @XmlElement(namespace=NS,name="cause") public ExceptionBean cause; // so that people noticed this fragment can turn it off @XmlAttribute public String note = "To disable this feature, set "+SOAPFaultBuilder.CAPTURE_STACK_TRACE_PROPERTY+" system property to false"; ExceptionBean() {// for JAXB } /** * Creates an {@link ExceptionBean} tree that represents the given {@link Throwable}. */ private ExceptionBean(Throwable t) { this.className = t.getClass().getName(); this.message = t.getMessage(); for (StackTraceElement f : t.getStackTrace()) { stackTrace.add(new StackFrame(f)); } Throwable cause = t.getCause(); if(t!=cause && cause!=null) this.cause = new ExceptionBean(cause); } private ServerSideException toException() { ServerSideException e = new ServerSideException(className,message); if(stackTrace!=null) { StackTraceElement[] ste = new StackTraceElement[stackTrace.size()]; for( int i=0; i=0) return String.valueOf(i); if(i==-2) return "native"; return "unknown"; } private int unbox(String v) { try { return Integer.parseInt(v); } catch (NumberFormatException e) { if ("native".equals(v)) { return -2; } return -1; } } private StackTraceElement toStackTraceElement() { return new StackTraceElement(declaringClass,methodName,fileName,unbox(lineNumber)); } } /** * Checks if the given element is the XML representation of {@link ExceptionBean}. */ public static boolean isStackTraceXml(Element n) { return LOCAL_NAME.equals(n.getLocalName()) && NS.equals(n.getNamespaceURI()); } private static final JAXBContext JAXB_CONTEXT; /** * Namespace URI. */ /*package*/ static final String NS = "http://jax-ws.dev.java.net/"; /*package*/ static final String LOCAL_NAME = "exception"; static { try { JAXB_CONTEXT = JAXBContext.newInstance(ExceptionBean.class); } catch (JAXBException e) { // this must be a bug in our code throw new Error(e); } } private static final NamespacePrefixMapper nsp = new NamespacePrefixMapper() { public String getPreferredPrefix(String namespaceUri, String suggestion, boolean requirePrefix) { if (NS.equals(namespaceUri)) { return ""; } return suggestion; } }; }





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