EDOBE XDOM PMML Manual do Utilizador descarregar pdf (Página 63)

These methods are similar to getPropAsInt, etc., except that they can

interpret the objects representing pointers to

CNKBuf and CNKProc

objects. For

getPropAsCNKBuf/getPropAsCNKProc, if the argument is

not a valid

CNKBuf/CNKProc, they return NULL.

CNKPropertyInfo::

virtual CNKPropertyInfo* getNextProp();

Some code will store a series of properties in an array or linked list.

When this is the case,

getNextProp() can be used to get the next

property in the list.

CNKPropertyInfo::

void* getPropAsObject();

virtual void* getPropAsObjectEnv();

const char* getPropAsObjectType();

void setPropAsObject(void* object);

These methods can be used to set and get a C pointer to some

unknown object. With Java, this would be a Java JNI object.They are

passed as

void* pointers, and the calling C code must be able to cast

these pointers and interpret them correctly.

getPropAsObjectType()

returns a string specifying the particular type of object system that the

properties come from: in the case of Java, this would be the string

"java". Other systems such as Spotfire S+ that may communicate

with this library may pass other types of objects.

getPropAsObjectEnv() returns an environment variable associated

with the object, if the system has such a variable. In Java, this would

be a

JNIEnv object.

CNKPropertyInfo::

void setPropToUnknownPropertyFlag();

This method sets the argument value to a special value that can be

used to detect that a property name has not been found. This is called

CNKObj::setProperty and CNKObj::getProperty when none of the

properties match.

The normal way to implement

setProperty is with code such as the

following:

void CNKProcRandomReader::setProperty(

CNKPropertyInfo* propInfo) {

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EDOBE XDOM PMML Manual do Utilizador Página 63