EDOBE XDOM PMML Manual de usuario descargar pdf (Pagina 54)

enough rows available), but the proc writing to that buf cannot write

to it (because the buf doesn't have enough free rows for writing to). In

general, a buf needs to contain a number of rows equal to the

maximum number of rows the writing proc can request, plus the

maximum number of rows that any of the readers can ask for. To

avoid this problem, the default number of rows for a buf is 2000, and

for any of the procs is 1000 rows.

C++ Libraries The C++ pipeline classes used by Spotfire Miner are divided into five

libraries: cnkbase, cnkio, cnkjava, cnkmisc, and cnksp. These are

distributed as dynamic linked libraries (*.dll).

Header files for the cnkbase library are available in include/

cnkbase. Debug and Release versions of cnkbase.lib are available in

lib/cnkbase. As programmers are not expected to directly use or

extend the other libraries, these files are only provided for cnkbase.

User-written procs belong in a user-written library, as shown in the

example in section Simple C++ Version on page 32

Cnkbase Library

The cnkbase library provides the core pipeline implementation.

This includes classes for procs, bufs, and the pipeline.

Programmers implementing new procedures or doing pipeline

programming in general will use these classes.

Cnkio Library

The cnkio library provides file and database IO support. The

CNKProcFile class supports all of the file and database read/write

nodes in Spotfire Miner.

Cnkjava Library

The cnkjava library provides support for communicating between

C++ and Java. This includes the

CNKJava class with infrastructure for

passing information between C++ and Java, and the

CNKProcJavaTransform class used to call back into Java to perform

computations in Java.

Java programmers will use the Java side of this connection.

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EDOBE XDOM PMML Manual de usuario Pagina 54