Search Results

Search found 5 results on 1 pages for 'staxman'.

Page 1/1 | 1 

• ActiveMQ, timestamp for broker receiving the message to send

  - by StaxMan

  Ok, as per ActiveMQ docs, it appears that Message.getJMSTimestamp() returns time that client claims it sent the message (with its local clock). And that there is supposedly property "JMSActiveMQBrokerInTime" that is added to Message (see http://activemq.apache.org/activemq-message-properties.html). However, trying to access it on an ActiveMQ 4.1.2 installation gives an error. Does anyone know if this is something that was only added in 5.0 or later? Or is there some other explanation as to where it might have disappeared? Message.getPropertyNames() returns empty enumeration, which could indicate that nothing gets through.

  Read the article

• Jetty 6 to Jetty 7 upgrade: what happened to system property "jetty.lib"? (-Djetty.lib=my/lib/dir)

  - by StaxMan

  Looks like Jetty team wanted to do some spring cleaning between versions 6 and 7, and it looks as if one useful system property, "jetty.lib" either does not exist, does not work, or just has changed in an unspecified way so as to make my jetty 6 set up work easily with Jetty 7. I tried searching through Jetty 7 docs, but about the only reference I saw was that "some commonly used properties (such as "jetty.home") still work as they used to". So, what am I missing? I really would want to avoid messing with things within Jetty distribution dirs (otherwise I could -- and maybe I have to? -- just use JETTY_BASE/lib/ext), and that's what "jetty.lib" was useful for.

  Read the article

• Simplest distributed persistent key/value store that supports primary key range queries

  - by StaxMan

  I am looking for a properly distributed (i.e. not just sharded) and persisted (not bounded by available memory on single node, or cluster of nodes) key/value ("nosql") store that does support range queries by primary key. So far closest such system is Cassandra, which does above. However, it adds support for other features that are not essential for me. So while I like it (and will consider using it of course), I am trying to figure out if there might be other mature projects that implement what I need. Specifically, for me the only aspect of value I need is to access it as a blob. For key, however, I need range queries (as in, access values ordered, limited by start and/or end values). While values can have structures, there is no need to use that structure for anything on server side (can do client-side data binding, flexible value/content types etc). For added bonus, Cassandra style storage (journaled, all sequential writes) seems quite optimal for my use case. To help filter out answers, I have investigated some alternatives within general domain like: Voldemort (key/value, but no ordering) and CouchDB (just sharded, more batch-oriented); and am aware of systems that are not quite distributed while otherwise qualifying (bdb variants, tokyo cabinet itself (not sure if Tyrant might qualify), redis (in-memory store only)).

  Read the article

• What to call factory-like (java) methods used with immutable objects

  - by StaxMan

  When creating classes for "immutable objects" immutable meaning that state of instances can not be changed; all fields assigned in constructor) in Java (and similar languages), it is sometimes useful to still allow creation of modified instances. That is, using an instance as base, and creating a new instance that differs by just one property value; other values coming from the base instance. To give a simple example, one could have class like: public class Circle { final double x, y; // location final double radius; public Circle(double x, double y, double r) { this.x = x; this.y = y; this.r = r; } // method for creating a new instance, moved in x-axis by specified amount public Circle withOffset(double deltaX) { return new Circle(x+deltaX, y, radius); } } So: what should method "withOffset" be called? (note: NOT what its name ought to be -- but what is this class of methods called). Technically it is kind of a factory method, but somehow that does not seem quite right to me, since often factories are just given basic properties (and are either static methods, or are not members of the result type but factory type). So I am guessing there should be a better term for such methods. Since these methods can be used to implement "fluent interface", maybe they could be "fluent factory methods"? Better suggestions? EDIT: as suggested by one of answers, java.math.BigDecimal is a good example with its 'add', 'subtract' (etc) methods. Also: I noticed that there's this question (by Jon Skeet no less) that is sort of related (although it asks about specific name for method)

  Read the article

• Simple way to do SURBL lookup from Java?

  - by StaxMan

  I am reading about SURBLs (known spam hosts), for purpose of classifying spam, as a batch process. Main access method seems to be via DNS lookups. I was wondering what's the usual way to do such lookups from Java code. Since this is a batch process with no strict performance requirements, I think most important feature would just be simplicity.

  Read the article

1