... applications.The latter use ofXML is much discussed and heralded in particular as a great benefit in connectinglegacy applications to modern Web- based applications.Within aWeb application, passing ... in data-display tasks, except in two tasks (displayingchat subject categories to a user starting a chat, and displaying the messages ina chat).TransformTagwas so useful that we were able to ... value=“<tree><topic>Chess PlayersChat</topic><moderator>HarveyWilkinson</moderator></tree>”>Notice...
... store!).When a visitor chooses a chat to join, the selection includes both a chat subjectand a chat topic.The chat subject gives the complete path to the correct chat subjectelement in the XML database. ... to touchthe existing scaffolding. Much can be done to change the appearance of the userinterface, while still incorporating the fundamental message communication function-ality that allows ... Selecting Chat SubjectsAs you have read, our implementation began as a system involving many JSP docu-ments, which used custom tags to access an XML data-interface object and an XSLTprocessor. At...
... Chat Subject and Topic■Performing thread synchronization■Synchronizing the XML database■Finding the chat and actor status in Chat■ Rejoining existing chats■Starting a chat■Adding a ... false;boolean actorIsGuestInChat = false;boolean chatExistsForSubjectAndTopic = false;boolean actorRestartingCurrentChat = false;Getting Chat Subject and TopicThe chat subject and topic, chosen by a ... request,which can be associated with a particular destination and bonForumCommandprocessing.That will help create more complex combinations of the bonForum chat logic, bymaking one more variable available...
... sufficientthat the data storage be capable of containing a tree of elements ina hierarchy. Eachelement optionally contains a list of name=valueattribute pairs and can have contentcorresponding to ... source:if(haveSubject && haveTopic) {String fakeChatItem = chatSubject + “_[“;fakeChatItem = fakeChatItem + chatTopic + “]”;// ‘_’ is separator ina chatItem// ‘.’ is separator in pathNameHashtable ... );if(actorIsHostInChat) {bonForumCommand = “host_executes_chat”;actorWillRejoinChat = true;haveChatItem = false;}else if(actorIsGuestInChat) {actorWillRejoinChat = true;haveChatItem = false;}08...
... place it as a JAR file in the TOMCAT_HOME\lib folder. A JSP container, such as Tomcat, canalso use tag libraries by finding the appropriate implementing classes in its default orother class ... TagAttributeInfo,TagData,TagExtraInfo,TagInfo,TagLibraryInfo, andVariableInfo.The doStartTag( ) MethodImplementing the Taginterface implies defining a doStartTag()method. A tag ... is a mechanism of choice in the nested-tag arsenal of the JSPtaglib API:ConnectionTag connectionTag = (ConnectionTag) TagSupport.findAncestorWithClass(➥this, org.apache.taglibs.sql.ConnectionTag.class...
... Note that if you have Xalan-Java-2,you can also set xalanVersionto Xalan Java 1, as long as the compatibility JAR fileis accessible, for example, as TOMCAT_HOME\lib\xalanj1compat.jar.Let’s ... Xalan1Transformerclass,which encapsulates the steps necessary to carry out an XSLT process using the Xalan-Java 1 processor from the Apache XML project.package de.tarent.forum;import java.text.*;import ... XSLT couldwait until later to display a list of available chats. In the original XML-based design, connections between data items were maintainedby matching key values in related elements.The connection...
... their source code, as well as Chapter 8.The addNode() Method’s nodeKeyHashtable Cache In the ForestHashtableclass, the public classes that add data nodes all call a privateclass called addNode().The ... bonForumcontains actors,actions, and thingsnodes. At initialization, one child of actors, called system, is added. A bonForum’sXML database also contains initially a list of links to ... searchthrough a much smaller data set that is guaranteed to contain all the new child nodesthat we must find instead of making many new requests from a database.Climbing Up the Hierarchy In...
... typesStyle and tone of contentOptional Web Site Components DetailsBlogStreaming mediaOnline chattingSearch engineSearch engine optimization planInteractive applicationsElectronic shopping cart(List ... architec-ture defines the physical organization components(such as applications and databases) and content. Siteadministration, manageability, and security will greatlyinfluence your architecture.Content: ... streaming media, onlinechatting, search engine, search engine optimizationplan, interactive applications, electronic shopping cart(for e-commerce sites), just to name a few.The following checklist...
... you'll see how to test your Web service. Testing aWebService To test your Web service, point your browser to the following URL: http://localhost/NorthwindWebService/Customers.asmx Click ... whereClause and click the Invoke button: CustomerID IS NOT NULL This causes the RetrieveCustomers() method to return a DataSet with a DataTable containing all the rows from the Customers table ... 17.6). Notice that the space characters in the whereClause parameter value have been converted to plus (+) characters. You'll need to scroll down the page to see the other customers. ...
... SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText = selectString; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand ... IContainer components = null; Creating aWebService In this section, you'll create aWebservice that contains a method that returns a DataSet containing rows from the Customers table. Start ... Customers class is derived from the System .Web. Services.WebService class, which indicates that the Customers class forms part of aWeb service. Near the end of Listing 1.1, you'll notice a method...