/*
* Copyright 1996-2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package java.sql;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
/**
* <P>An exception that provides information on a database access
* error or other errors.
*
* <P>Each <code>SQLException</code> provides several kinds of information:
* <UL>
* <LI> a string describing the error. This is used as the Java Exception
* message, available via the method <code>getMesasge</code>.
* <LI> a "SQLstate" string, which follows either the XOPEN SQLstate conventions
* or the SQL:2003 conventions.
* The values of the SQLState string are described in the appropriate spec.
* The <code>DatabaseMetaData</code> method <code>getSQLStateType</code>
* can be used to discover whether the driver returns the XOPEN type or
* the SQL:2003 type.
* <LI> an integer error code that is specific to each vendor. Normally this will
* be the actual error code returned by the underlying database.
* <LI> a chain to a next Exception. This can be used to provide additional
* error information.
* <LI> the causal relationship, if any for this <code>SQLException</code>.
* </UL>
*/
public class SQLException extends java.lang.Exception implements
Iterable<Throwable> {
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code>, <code>SQLState</code> and
* <code>vendorCode</code>.
*
* The <code>cause</code> is not initialized, and may subsequently be
* initialized by a call to the
* {@link Throwable#initCause(java.lang.Throwable)} method.
* <p>
* @param reason a description of the exception
* @param SQLState an XOPEN or SQL:2003 code identifying the exception
* @param vendorCode a database vendor-specific exception code
*/
public SQLException(String reason, String SQLState, int vendorCode) {
super (reason);
this .SQLState = SQLState;
this .vendorCode = vendorCode;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
DriverManager.println("SQLState(" + SQLState
+ ") vendor code(" + vendorCode + ")");
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code> and <code>SQLState</code>.
*
* The <code>cause</code> is not initialized, and may subsequently be
* initialized by a call to the
* {@link Throwable#initCause(java.lang.Throwable)} method. The vendor code
* is initialized to 0.
* <p>
* @param reason a description of the exception
* @param SQLState an XOPEN or SQL:2003 code identifying the exception
*/
public SQLException(String reason, String SQLState) {
super (reason);
this .SQLState = SQLState;
this .vendorCode = 0;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
DriverManager.println("SQLException: SQLState("
+ SQLState + ")");
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code>. The <code>SQLState</code> is initialized to
* <code>null</code> and the vender code is initialized to 0.
*
* The <code>cause</code> is not initialized, and may subsequently be
* initialized by a call to the
* {@link Throwable#initCause(java.lang.Throwable)} method.
* <p>
* @param reason a description of the exception
*/
public SQLException(String reason) {
super (reason);
this .SQLState = null;
this .vendorCode = 0;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Constructs a <code>SQLException</code> object.
* The <code>reason</code>, <code>SQLState</code> are initialized
* to <code>null</code> and the vendor code is initialized to 0.
*
* The <code>cause</code> is not initialized, and may subsequently be
* initialized by a call to the
* {@link Throwable#initCause(java.lang.Throwable)} method.
* <p>
*/
public SQLException() {
super ();
this .SQLState = null;
this .vendorCode = 0;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>cause</code>.
* The <code>SQLState</code> is initialized
* to <code>null</code> and the vendor code is initialized to 0.
* The <code>reason</code> is initialized to <code>null</code> if
* <code>cause==null</code> or to <code>cause.toString()</code> if
* <code>cause!=null</code>.
* <p>
* @param cause the underlying reason for this <code>SQLException</code>
* (which is saved for later retrieval by the <code>getCause()</code> method);
* may be null indicating the cause is non-existent or unknown.
* @since 1.6
*/
public SQLException(Throwable cause) {
super (cause);
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code> and <code>cause</code>.
* The <code>SQLState</code> is initialized to <code>null</code>
* and the vendor code is initialized to 0.
* <p>
* @param reason a description of the exception.
* @param cause the underlying reason for this <code>SQLException</code>
* (which is saved for later retrieval by the <code>getCause()</code> method);
* may be null indicating the cause is non-existent or unknown.
* @since 1.6
*/
public SQLException(String reason, Throwable cause) {
super (reason, cause);
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code>, <code>SQLState</code> and <code>cause</code>.
* The vendor code is initialized to 0.
* <p>
* @param reason a description of the exception.
* @param sqlState an XOPEN or SQL:2003 code identifying the exception
* @param cause the underlying reason for this <code>SQLException</code>
* (which is saved for later retrieval by the
* <code>getCause()</code> method); may be null indicating
* the cause is non-existent or unknown.
* @since 1.6
*/
public SQLException(String reason, String sqlState, Throwable cause) {
super (reason, cause);
this .SQLState = sqlState;
this .vendorCode = 0;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
printStackTrace(DriverManager.getLogWriter());
DriverManager.println("SQLState(" + SQLState + ")");
}
}
}
/**
* Constructs a <code>SQLException</code> object with a given
* <code>reason</code>, <code>SQLState</code>, <code>vendorCode</code>
* and <code>cause</code>.
* <p>
* @param reason a description of the exception
* @param sqlState an XOPEN or SQL:2003 code identifying the exception
* @param vendorCode a database vendor-specific exception code
* @param cause the underlying reason for this <code>SQLException</code>
* (which is saved for later retrieval by the <code>getCause()</code> method);
* may be null indicating the cause is non-existent or unknown.
* @since 1.6
*/
public SQLException(String reason, String sqlState, int vendorCode,
Throwable cause) {
super (reason, cause);
this .SQLState = sqlState;
this .vendorCode = vendorCode;
if (!(this instanceof SQLWarning)) {
if (DriverManager.getLogWriter() != null) {
DriverManager.println("SQLState(" + SQLState
+ ") vendor code(" + vendorCode + ")");
printStackTrace(DriverManager.getLogWriter());
}
}
}
/**
* Retrieves the SQLState for this <code>SQLException</code> object.
*
* @return the SQLState value
*/
public String getSQLState() {
return (SQLState);
}
/**
* Retrieves the vendor-specific exception code
* for this <code>SQLException</code> object.
*
* @return the vendor's error code
*/
public int getErrorCode() {
return (vendorCode);
}
/**
* Retrieves the exception chained to this
* <code>SQLException</code> object by setNextException(SQLException ex).
*
* @return the next <code>SQLException</code> object in the chain;
* <code>null</code> if there are none
* @see #setNextException
*/
public SQLException getNextException() {
return (next);
}
/**
* Adds an <code>SQLException</code> object to the end of the chain.
*
* @param ex the new exception that will be added to the end of
* the <code>SQLException</code> chain
* @see #getNextException
*/
public void setNextException(SQLException ex) {
SQLException current = this ;
for (;;) {
SQLException next = current.next;
if (next != null) {
current = next;
continue;
}
if (nextUpdater.compareAndSet(current, null, ex)) {
return;
}
current = current.next;
}
}
/**
* Returns an iterator over the chained SQLExceptions. The iterator will
* be used to iterate over each SQLException and its underlying cause
* (if any).
*
* @return an iterator over the chained SQLExceptions and causes in the proper
* order
*
* @since 1.6
*/
public Iterator<Throwable> iterator() {
return new Iterator<Throwable>() {
SQLException firstException = SQLException.this ;
SQLException nextException = firstException
.getNextException();
Throwable cause = firstException.getCause();
public boolean hasNext() {
if (firstException != null || nextException != null
|| cause != null)
return true;
return false;
}
public Throwable next() {
Throwable throwable = null;
if (firstException != null) {
throwable = firstException;
firstException = null;
} else if (cause != null) {
throwable = cause;
cause = cause.getCause();
} else if (nextException != null) {
throwable = nextException;
cause = nextException.getCause();
nextException = nextException.getNextException();
} else
throw new NoSuchElementException();
return throwable;
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
/**
* @serial
*/
private String SQLState;
/**
* @serial
*/
private int vendorCode;
/**
* @serial
*/
private volatile SQLException next;
private static final AtomicReferenceFieldUpdater<SQLException, SQLException> nextUpdater = AtomicReferenceFieldUpdater
.newUpdater(SQLException.class, SQLException.class, "next");
private static final long serialVersionUID = 2135244094396331484L;
}
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