BibSonomy bookmarks for /user/jil/magichttps://www.bibsonomy.org/user/jil/magicBibSonomy RSS Feed for /user/jil/magicBug ID: JDK-6785441 Graphs with cycles and writeReplace()/readResole() fail based on instance namesWont't Fix
These potentially surprising behaviors are fairly baked into the
long-standing object serialization format and mechanisms.https://bugs.java.com/bugdatabase/view_bug.do?bug_id=6785441jil2020-02-06T11:11:57+01:00bug cycle cyclic graph java magic methods object reference serialization <span itemprop="description">Wont't Fix
These potentially surprising behaviors are fairly baked into the
long-standing object serialization format and mechanisms.</span>Bug ID: JDK-6842012 "writeReplace" and "readResolve" problem with cyclic objet graphThis is essentially the same issue as is described in 6785441-- please see the Evaluation for that bug report.https://bugs.java.com/bugdatabase/view_bug.do?bug_id=6842012jil2020-02-06T11:10:25+01:00bug cycle cyclic graph java magic methods object readResolve reference serialization writeReplace <span itemprop="description">This is essentially the same issue as is described in 6785441-- please see the Evaluation for that bug report.</span>What are the writeReplace() and readResolve() methods used for?public class Gender implements Serializable {
public final static Gender MALE = new Gender("Male");
public final static Gender FEMALE = new Gender("Female");
private String name;
private Gender(String name) {
this.name = name;
}
Object writeReplace() throws ObjectStreamException {
if (this.equals(MALE)) {
return SerializedForm.MALE_FORM;
} else {
return SerializedForm.FEMALE_FORM;
}
}
private static class SerializedForm implements Serializable {
final static SerializedForm MALE_FORM = new SerializedForm(0);
final static SerializedForm FEMALE_FORM = new SerializedForm(1);
private int value;
SerializedForm(int value) {
this.value = value;
}
Object readResolve() throws ObjectStreamException {
if (value == MALE_FORM.value) {
return Gender.MALE;
} else {
return Gender.FEMALE;
}
}
}
}http://www.jguru.com/faq/view.jsp?EID=44039jil2019-12-17T11:49:43+01:00java magic object replacement serialization writeReplace <span itemprop="description">public class Gender implements Serializable {
public final static Gender MALE = new Gender("Male");
public final static Gender FEMALE = new Gender("Female");
private String name;
private Gender(String name) {
this.name = name;
}
Object writeReplace() throws ObjectStreamException {
if (this.equals(MALE)) {
return SerializedForm.MALE_FORM;
} else {
return SerializedForm.FEMALE_FORM;
}
}
private static class SerializedForm implements Serializable {
final static SerializedForm MALE_FORM = new SerializedForm(0);
final static SerializedForm FEMALE_FORM = new SerializedForm(1);
private int value;
SerializedForm(int value) {
this.value = value;
}
Object readResolve() throws ObjectStreamException {
if (value == MALE_FORM.value) {
return Gender.MALE;
} else {
return Gender.FEMALE;
}
}
}
}</span>Linux Magic System Request Key Hacks — The Linux Kernel documentationhttps://www.kernel.org/doc/html/v5.2/admin-guide/sysrq.htmljil2019-07-10T11:03:24+02:00commands key linux magic sysrequest sysrq <a itemprop="url" data-versiondate="2019-07-10T11:03:24+02:00" href="https://www.kernel.org/doc/html/v5.2/admin-guide/sysrq.html" rel="nofollow" class="description-link">https://www.kernel.org/doc/html/v5.2/admin-guide/sysrq.html</a>TEXTAREA wrap "off" - a CSS alternative http://archivist.incutio.com/viewlist/css-discuss/66573jil2010-04-06T18:08:28+02:00attribute magic nowrap off textarea wrap <a itemprop="url" data-versiondate="2010-04-06T18:08:28+02:00" href="http://archivist.incutio.com/viewlist/css-discuss/66573" rel="nofollow" class="description-link">http://archivist.incutio.com/viewlist/css-discuss/66573</a>Shared Development: File type detectionhttp://fredeaker.blogspot.com/2006/12/file-type-mime-detection.htmljil2007-12-02T17:06:25+01:00detection file format java magic mime type vergleich <a itemprop="url" data-versiondate="2007-12-02T17:06:25+01:00" href="http://fredeaker.blogspot.com/2006/12/file-type-mime-detection.html" rel="nofollow" class="description-link">http://fredeaker.blogspot.com/2006/12/file-type-mime-detection.html</a>