D

DAMPS (Digital Advanced Mobile Phone Service), 520

data binding, Java-XML, 485

benefits, 487

deterministic coding, applying, 485

issues, 486

overview, XML message parsing, 485

tools, 487

databases

shared databases, cluster shared storage architecture, 399

debugging

logging service example, 448

Delegator message handler class, EJB, 327

delivery modes, messages, 155

delivery order, PTP clustering, 391

NON_PERSISTENT, 192

PERSISTENT, 193

guaranteed delivery for message consumers, 195

guaranteed delivery for message producers, 194

deployment descriptors, XML

helpdesk ticket system, EJB examples, 361

destinations, 52

class hierarchy, 54

creating, interface methods, 65

definition, 52

queues, PTP messaging, 52

topics, Pub/Sub messaging, 53

Digital Advanced Mobile Phone Service, see DAMPS.

Distributed Shared Memory, see DSM.

distributed systems architecture

global flowers delivery example, 24

loose coupling, 367

stock price distribution example, 28

tight coupling, 21

DOM (Document Object Model), 473

overview, XML message parsing, 473

tree-based parsing, XML messaging

example, 473

analyze() method, 475

casting nodes to elements, 478

extra white space, processing, 477

limitations, 479

navigating the tree, coding, 474

node tree example, 473

parse() method, 474

testing, 479

unserializing objects, 478

domains, 9

DSM (Distributed Shared Memory)

shared storage architecture, clusters, 399

durability

creating durable subscribers, interface methods, 67

persistence and, Pub/Sub messaging, 15