Thursday, March 12, 2015

WriteAbortedException

java.io.WriteAbortedException

WriteAbortedException is described in the javadoc comments as:

Signals that one of the ObjectStreamExceptions was thrown during a write operation. Thrown during a read operation when one of the ObjectStreamExceptions was thrown during a write operation. The exception that terminated the write can be found in the detail field. The stream is reset to it's initial state and all references to objects already deserialized are discarded.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The 'exception causing the abort' that is provided at construction time and accessed via the public {link: #detail} field is now known as the cause, and may be accessed via the {link: Throwable#getCause()} method, as well as the aforementioned 'legacy field.'
author: unascribed version: 1.18, 12/19/03 since: JDK1.1

Where is this exception thrown?

Following, is a list of exception messages cross-referenced to the source code responsible for throwing them. Click on the method link to view the code and see how the exception is thrown.

How is this exception thrown?

The following sub-sections identify where this exception is thrown, and how (or why) the code is throwing the exception.

Any source code quoted in this section is subject to the Java Research License unless stated otherwise.

java.io.ObjectInputStream.readObject0(boolean)

/**
     * Underlying readObject implementation.
     */
private Object readObject0(boolean unshared) throws IOException {
    boolean oldMode = bin.getBlockDataMode();
    if (oldMode) {
        int remain = bin.currentBlockRemaining();
        if (remain > 0) {
            throw new OptionalDataException(remain);
        } else if (defaultDataEnd) {
            throw new OptionalDataException(true);
        }
        bin.setBlockDataMode(false);
    }
    byte tc;
    while ((tc = bin.peekByte()) == TC_RESET) {
        bin.readByte();
        handleReset();
    }
    depth++;
    try {
        switch(tc) {
            case TC_NULL:
                return readNull();
            case TC_REFERENCE:
                return readHandle(unshared);
            case TC_CLASS:
                return readClass(unshared);
            case TC_CLASSDESC:
            case TC_PROXYCLASSDESC:
                return readClassDesc(unshared);
            case TC_STRING:
            case TC_LONGSTRING:
                return checkResolve(readString(unshared));
            case TC_ARRAY:
                return checkResolve(readArray(unshared));
            case TC_ENUM:
                return checkResolve(readEnum(unshared));
            case TC_OBJECT:
                return checkResolve(readOrdinaryObject(unshared));
            case TC_EXCEPTION:
                IOException ex = readFatalException();
                throw new WriteAbortedException('writing aborted', ex);
            case TC_BLOCKDATA:
            case TC_BLOCKDATALONG:
                if (oldMode) {
                    bin.setBlockDataMode(true);
                    bin.peek();
                    throw new OptionalDataException(bin.currentBlockRemaining());
                } else {
                    throw new StreamCorruptedException('unexpected block data');
                }
            case TC_ENDBLOCKDATA:
                if (oldMode) {
                    throw new OptionalDataException(true);
                } else {
                    throw new StreamCorruptedException('unexpected end of block data');
                }
            default:
                throw new StreamCorruptedException();
        }
    } finally {
        depth--;
        bin.setBlockDataMode(oldMode);
    }
}

Source: "Java SE Downloads: Java SE 6 JDK Source Code", at: http://www.oracle.com/technetwork/java/javase/downloads/index.html

No comments:

Post a Comment