null if the
* cause is nonexistent or unknown. (The cause is the throwable that
* caused this throwable to get thrown.)
*/
public Throwable getCause() {
return ((containedException == this)
? null
: containedException);
}
/**
* Initializes the cause of this throwable to the specified value.
* (The cause is the throwable that caused this throwable to get thrown.)
*
* This method can be called at most once. It is generally called from
* within the constructor, or immediately after creating the
* throwable. If this throwable was created
* with {@link #TransformerException(Throwable)} or
* {@link #TransformerException(String,Throwable)}, this method cannot be called
* even once.
*
* @param cause the cause (which is saved for later retrieval by the
* {@link #getCause()} method). (A null value is
* permitted, and indicates that the cause is nonexistent or
* unknown.)
* @return a reference to this Throwable instance.
* @throws IllegalArgumentException if cause is this
* throwable. (A throwable cannot
* be its own cause.)
* @throws IllegalStateException if this throwable was
* created with {@link #TransformerException(Throwable)} or
* {@link #TransformerException(String,Throwable)}, or this method has already
* been called on this throwable.
*/
public synchronized Throwable initCause(Throwable cause) {
if (this.containedException != null) {
throw new IllegalStateException("Can't overwrite cause");
}
if (cause == this) {
throw new IllegalArgumentException(
"Self-causation not permitted");
}
this.containedException = cause;
return this;
}
/**
* Create a new TransformerException.
*
* @param message The error or warning message.
*/
public TransformerException(String message) {
super(message);
this.containedException = null;
this.locator = null;
}
/**
* Create a new TransformerException wrapping an existing exception.
*
* @param e The exception to be wrapped.
*/
public TransformerException(Throwable e) {
super(e.toString());
this.containedException = e;
this.locator = null;
}
/**
* Wrap an existing exception in a TransformerException.
*
*
This is used for throwing processor exceptions before * the processing has started.
* * @param message The error or warning message, or null to * use the message from the embedded exception. * @param e Any exception */ public TransformerException(String message, Throwable e) { super(((message == null) || (message.length() == 0)) ? e.toString() : message); this.containedException = e; this.locator = null; } /** * Create a new TransformerException from a message and a Locator. * *This constructor is especially useful when an application is * creating its own exception from within a DocumentHandler * callback.
* * @param message The error or warning message. * @param locator The locator object for the error or warning. */ public TransformerException(String message, SourceLocator locator) { super(message); this.containedException = null; this.locator = locator; } /** * Wrap an existing exception in a TransformerException. * * @param message The error or warning message, or null to * use the message from the embedded exception. * @param locator The locator object for the error or warning. * @param e Any exception */ public TransformerException(String message, SourceLocator locator, Throwable e) { super(message); this.containedException = e; this.locator = locator; } /** * Get the error message with location information * appended. * * @return AString representing the error message with
* location information appended.
*/
public String getMessageAndLocation() {
StringBuilder sbuffer = new StringBuilder();
String message = super.getMessage();
if (null != message) {
sbuffer.append(message);
}
if (null != locator) {
String systemID = locator.getSystemId();
int line = locator.getLineNumber();
int column = locator.getColumnNumber();
if (null != systemID) {
sbuffer.append("; SystemID: ");
sbuffer.append(systemID);
}
if (0 != line) {
sbuffer.append("; Line#: ");
sbuffer.append(line);
}
if (0 != column) {
sbuffer.append("; Column#: ");
sbuffer.append(column);
}
}
return sbuffer.toString();
}
/**
* Get the location information as a string.
*
* @return A string with location info, or null
* if there is no location information.
*/
public String getLocationAsString() {
if (null != locator) {
StringBuilder sbuffer = new StringBuilder();
String systemID = locator.getSystemId();
int line = locator.getLineNumber();
int column = locator.getColumnNumber();
if (null != systemID) {
sbuffer.append("; SystemID: ");
sbuffer.append(systemID);
}
if (0 != line) {
sbuffer.append("; Line#: ");
sbuffer.append(line);
}
if (0 != column) {
sbuffer.append("; Column#: ");
sbuffer.append(column);
}
return sbuffer.toString();
} else {
return null;
}
}
/**
* Print the the trace of methods from where the error
* originated. This will trace all nested exception
* objects, as well as this object.
*/
public void printStackTrace() {
printStackTrace(new java.io.PrintWriter(System.err, true));
}
/**
* Print the the trace of methods from where the error
* originated. This will trace all nested exception
* objects, as well as this object.
* @param s The stream where the dump will be sent to.
*/
public void printStackTrace(java.io.PrintStream s) {
printStackTrace(new java.io.PrintWriter(s));
}
/**
* Print the the trace of methods from where the error
* originated. This will trace all nested exception
* objects, as well as this object.
* @param s The writer where the dump will be sent to.
*/
public void printStackTrace(java.io.PrintWriter s) {
if (s == null) {
s = new java.io.PrintWriter(System.err, true);
}
try {
String locInfo = getLocationAsString();
if (null != locInfo) {
s.println(locInfo);
}
super.printStackTrace(s);
} catch (Throwable e) {}
}
}