Each annotation contains a name attribute, which can be given a string providing the name of the XML attribute or element. This ensures that should the object have unusable field or method names they can be overridden, also if your code is obfuscated explicit naming. 1. Not using okoker data recovery 6.0 crack (serial) appropriate indices. This is a relatively easy one but still it happens all the time. Foreign keys should have indexes on them. If you re using a field. Reading a list of elements: In XML configuration and in Java objects there is often a one to many relationship from a parent to a child object. Serializing a simple object Deserializing a simple object Nested object serialization. Optional elements and attributes Reading a list of elements Overriding an annotated type. Dealing with an inline list of elements. Constructor injection Reading an array of elements Adding text and attributes to elements. Using utility collections Object substitution Serializing Java language types Styling serialized XML. Version tolerant serialization Serializing static final fields Overriding serialization with converters. Intercepting the serialization process Mapping with XPath expressions Dynamic serialization with unions. Or there may be some critical condition like an out of memory condition (if the server is configured to have a memory limit using the maxmemory directive). A command may fail after EXEC is called, for instance since we performed an operation against a key. For instance if a query increments a key by 2 instead of 1, or increments the wrong key, there is no way for a rollback mechanism to help. Given that no one can save the programmer from his errors, and that the kind of errors. More on this.) Otherwise the transaction is not entered at all. (Note that if you WATCH a volatile key and Redis expires the key after you WATCH ed it, EXEC will still work. More on this.) WATCH can be called multiple times. In the following example one command will fail when executed even if the syntax is right: Trying. Connected to localhost. Escape character is '. MULTI OK SET a 3 abc QUEUED LPOP a QUEUED EXEC 2 OK -ERR Operation against a key holding the wrong. @Root public class PropertyList @ElementList private List Entry list; @Attribute private String name; public String getName return name; public List getProperties return list; @Root public class Entry @Attribute private String key; @Element private String value; public String getName return name; public String getValue return value;. Another example, again using the wire protocol with telnet, shows how syntax errors are reported ASAP instead: MULTI OK INCR a b c -ERR wrong number of arguments for 'incr' command This time due to the syntax error the bad INCR command is not queued. We just have to repeat the operation hoping this time we'll not get a new race. This form of locking is called optimistic locking and is a very powerful form of locking. In many use cases, multiple clients will be accessing different keys, so collisions. MULTI command none of the operations are performed, instead if the EXEC command is called, all the operations are performed. When using the append-only file Redis makes sure to use a single write(2) syscall to write the transaction on disk. Either all of the commands or none are processed, so a Redis transaction is also atomic. The EXEC command triggers the execution of all the commands in the transaction, so if a client loses the connection to the server in the context of a transaction.