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Jackson and generic type reference
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It works : I did the following: JavaType topMost = mapper.getTypeFactory().constructParametricType(MyWrapper.class, ActualClassRuntime.class); and then did the readValue and it finally worked :)
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What's the best way to send a signal to all members of a process group?
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kill -74313 -bash: kill: 74313: invalid signal specification If i add the kill -15 -GPID it worked perfectly.
– Adam Peck
Dec 24 '08 at 20:17
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Oracle: how to UPSERT (update or insert into a table?)
... and the update where another process could successfully fire a delete. I did however use this pattern on a table that never has deletes fired against it.
– chotchki
Sep 29 '11 at 22:50
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PostgreSQL delete all content
....3/static/sql-delete.html
TRUNCATE is a PostgreSQL extension that provides a faster mechanism to
remove all rows from a table. TRUNCATE quickly removes all rows from a
set of tables. It has the same effect as an unqualified DELETE on each
table, but since it does not actually scan the tab...
How to have an automatic timestamp in SQLite?
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Just declare a default value for a field:
CREATE TABLE MyTable(
ID INTEGER PRIMARY KEY,
Name TEXT,
Other STUFF,
Timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
);
However, if your INSERT command explicitly sets this field to NULL, it will be set to NULL.
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How do I make and use a Queue in Objective-C?
...tableArray+QueueAdditions.h
@interface NSMutableArray (QueueAdditions)
- (id) dequeue;
- (void) enqueue:(id)obj;
@end
NSMutableArray+QueueAdditions.m
@implementation NSMutableArray (QueueAdditions)
// Queues are first-in-first-out, so we remove objects from the head
- (id) dequeue {
// if ([...
Differences between cookies and sessions?
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Sessions are server-side files that contain user information, while Cookies are client-side files that contain user information. Sessions have a unique identifier that maps them to specific users. This identifier can be passed in the URL or saved...
Check if a temporary table exists and delete if it exists before creating a temporary table
...e the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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jQuery - getting custom attribute from selected option
... answered Feb 9 '10 at 16:41
Davide GualanoDavide Gualano
11.8k99 gold badges4242 silver badges6161 bronze badges
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How to change max_allowed_packet size
...on. He made a mistake of putting it at the bottom of the file first so it did not work.
6) Control + O (save) then ENTER (confirm) then Control + X (exit file)
7) service mysqld restart
8) You can check the change in the variables section on phpmyadmin
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