XCC Client Libraries Communicate With an XDBC Server
XCC has a set of client libraries that you use to build applications that communicate with MarkLogic Server. XCC requires that an XDBC server is configured in MarkLogic Server.
An XDBC server responds to XDBC and XCC requests. XDBC and XCC use the same wire protocol to communicate with MarkLogic Server. You can write applications either as standalone applications or ones that run in an application server environment. Your XCC-enabled application connects to a specified port on a system that is running MarkLogic Server, and communicates with MarkLogic Server by submitting requests (for example, XQuery statements) and processing the results returned by those programs. These XQuery programs can incorporate calls to XQuery functions stored and accessible by MarkLogic Server, and accessible from any XDBC-enabled application. The XQuery programs can perform the full suite of XQuery functionality, including loading, querying, updating and deleting content.
XQuery requests submitted via XCC return results as specified by the XQuery code. These results can include XML and a variety of other datatypes. It is the XCC application's responsibility to parse, process and interpret these results in a manner appropriate to the variety of datatypes available. There are a number of publicly available libraries for assisting with this task, or you may write your own code. In order to accept connections from XCC-enabled applications, MarkLogic Server must be configured with an XDBC Server listening on the designated port. Each XDBC Server connects by default to a specific database within MarkLogic Server, but XCC provides the ability to communicate with any database in the MarkLogic Server cluster to which your application connects (and for which you have the necessary permissions and privileges).