Java Doc for GenericDriver.java in  » Rule-Engine » Mandarax » org » mandarax » xkb » framework » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Rule Engine » Mandarax » org.mandarax.xkb.framework   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.mandarax.xkb.framework.GenericDriver All known Subclasses:   org.mandarax.xkb.framework.XKBDriver_2_0,  org.mandarax.xkb.framework.XKBDriver_1_1,  org.mandarax.xkb.framework.XKBDriver_1_0,  org.mandarax.xkb.framework.XKBDriver_2_1, GenericDriver abstract public class GenericDriver implements XKBDriver(Code) A generic driver that uses XMLAdapter to map objects to XML. The driver can be more or less fault tolerant. The level of fault tolerance can be set using the respective constants. Furthermore, we can set a print writer that the adapter can use to report events or problems that do not lead to exceptions. The fault tolerance concepts applies in particular on the level of knowledge bases. Here the following guidelines should be used: If the fault tolerance level is medium, each problem should interrupt the export or import and the error should be "bubbled up" If the level is medium, the export or import can continue even id it fails for some clauses. But the log writer should be used to post a descriptive message, and (for export) a comment should be inserted into the document where the clause set is supposed to be. If the level is high, problems with export or import of single clauses are just ignored. The default fault tolerance level is medium. author:    Jens Dietrich version:    3.4 <7 March 05> since:    1.6 Field Summary final public static  String COMPARATOR      final public static  String COMPLEX_TERM      final public static  String CONSTANT_TERM      final public static  String DATA_SOURCE      final public static  int DEFAULT_FAULT_TOLERANCE      final public static  String DYNA_BEAN_FUNCTION      final public static  String FACT      final public static  int HIGH_FAULT_TOLERANCE      final public static  String JFUNCTION      final public static  String JPREDICATE      final public static  String KNOWLEDGE_BASE      final public static  int LOW_FAULT_TOLERANCE      final public static  String MANDARAX_LIB_FUNCTION      final public static  String MANDARAX_LIB_PREDICATE      final public static  int MEDIUM_FAULT_TOLERANCE      final public static  String METHOD      final public static  String OBJECT      final public static  String PREREQUISITE      final public static  String PROPERTIES      final public static  String PROPERTY      final public static  String PROPERTY_NAME      final public static  String PROPERTY_VALUE      final public static  String QUERY      final public static  String RULE      final public static  String SIMPLE_PREDICATE      final public static  String SQL_CLAUSE_SET      final public static  String SQL_FUNCTION      final public static  String SQL_PREDICATE      final public static  String TYPE      final public static  String VARIABLE_TERM      protected  int faultToleranceLevel      protected  PrintWriter out      Constructor Summary public   GenericDriver()      Constructor. Method Summary public  Document exportKnowledgeBase(KnowledgeBase kb)      Export a knowledge base, i.e., convert it into an xml document. public  XMLAdapter getAdapterByKindOfObject(String typeName)      Get an adapter by type, the type is a name as defined in static variables here. public  XMLAdapter getAdapterByTagName(String tagName)      Get an adapter by tag name. public  String getDTD()      Get the location (URL) of the associated DTD. public  String getDescription()      Get a short text describing the driver. public  int getFaultToleranceLevel()      Get the fault tolerance level. public  PrintWriter getLogWriter()      Get the log writer. public  String getName()      Get the name of the driver. public  KnowledgeBase importKnowledgeBase(Document doc)      Import a knowledge base, i.e., build it from an xml document. public  KnowledgeBase importKnowledgeBase(Element e)      Import a knowledge base. public  void install(XMLAdapter adapter)      Install an adapter. public  void setFaultToleranceLevel(int level)      Set the fault tolerance level. public  void setLogWriter(PrintWriter pw)      Set the log writer. public  boolean supportsAutoFacts()      Indicates whether the driver (and the underlying xml format (=dtd)) supports auto facts. public  boolean supportsClauseSets()      Indicates whether the driver (and the underlying xml format (=dtd)) supports clause sets. public  boolean supportsFacts()      Indicates whether the driver (and the underlying xml format (=dtd)) supports facts. public  boolean supportsFunctions()      Indicates whether the driver (and the underlying xml format (=dtd)) supports functions. public  boolean supportsJavaSemantics()      Indicates whether the driver (and the underlying xml format (=dtd)) supports the java semantics (e.g. public  boolean supportsMultiplePremises()      Indicates whether the driver (and the underlying xml format (=dtd)) supports multiple premises. public  boolean supportsNegationAsFailure()      Indicates whether the driver (and the underlying xml format (=dtd)) supports negation as failure. public  boolean supportsOrPremises()      Indicates whether the driver (and the underlying xml format (=dtd)) supports multiple premises connected by OR. public  boolean supportsQueries()      Indicates whether the driver (and the underlying xml format (=dtd)) supports queries. public  boolean supportsTypes()      Indicates whether the driver (and the underlying xml format (=dtd)) supports types. Field Detail COMPARATOR final public static String COMPARATOR(Code) COMPLEX_TERM final public static String COMPLEX_TERM(Code) CONSTANT_TERM final public static String CONSTANT_TERM(Code) DATA_SOURCE final public static String DATA_SOURCE(Code) DEFAULT_FAULT_TOLERANCE final public static int DEFAULT_FAULT_TOLERANCE(Code) DYNA_BEAN_FUNCTION final public static String DYNA_BEAN_FUNCTION(Code) FACT final public static String FACT(Code) HIGH_FAULT_TOLERANCE final public static int HIGH_FAULT_TOLERANCE(Code) JFUNCTION final public static String JFUNCTION(Code) JPREDICATE final public static String JPREDICATE(Code) KNOWLEDGE_BASE final public static String KNOWLEDGE_BASE(Code) LOW_FAULT_TOLERANCE final public static int LOW_FAULT_TOLERANCE(Code) MANDARAX_LIB_FUNCTION final public static String MANDARAX_LIB_FUNCTION(Code) MANDARAX_LIB_PREDICATE final public static String MANDARAX_LIB_PREDICATE(Code) MEDIUM_FAULT_TOLERANCE final public static int MEDIUM_FAULT_TOLERANCE(Code) METHOD final public static String METHOD(Code) OBJECT final public static String OBJECT(Code) PREREQUISITE final public static String PREREQUISITE(Code) PROPERTIES final public static String PROPERTIES(Code) PROPERTY final public static String PROPERTY(Code) PROPERTY_NAME final public static String PROPERTY_NAME(Code) PROPERTY_VALUE final public static String PROPERTY_VALUE(Code) QUERY final public static String QUERY(Code) RULE final public static String RULE(Code) SIMPLE_PREDICATE final public static String SIMPLE_PREDICATE(Code) SQL_CLAUSE_SET final public static String SQL_CLAUSE_SET(Code) SQL_FUNCTION final public static String SQL_FUNCTION(Code) SQL_PREDICATE final public static String SQL_PREDICATE(Code) TYPE final public static String TYPE(Code) VARIABLE_TERM final public static String VARIABLE_TERM(Code) faultToleranceLevel protected int faultToleranceLevel(Code) out protected PrintWriter out(Code) Constructor Detail GenericDriver public GenericDriver()(Code) Constructor. Method Detail exportKnowledgeBase public Document exportKnowledgeBase(KnowledgeBase kb) throws XKBException(Code) Export a knowledge base, i.e., convert it into an xml document. an xml document Parameters:   kb - a knowledge base exception:   an - XKBException is thrown if export fails getAdapterByKindOfObject public XMLAdapter getAdapterByKindOfObject(String typeName) throws XKBException(Code) Get an adapter by type, the type is a name as defined in static variables here. Parameters:   typeName - a text indicating the kind of object the adapter can export/import getAdapterByTagName public XMLAdapter getAdapterByTagName(String tagName) throws XKBException(Code) Get an adapter by tag name. Parameters:   tagName - a text indicating the name of an xml element getDTD public String getDTD()(Code) Get the location (URL) of the associated DTD. a text getDescription public String getDescription()(Code) Get a short text describing the driver. a text getFaultToleranceLevel public int getFaultToleranceLevel()(Code) Get the fault tolerance level. a number (see the constants defined in GenericDriver) getLogWriter public PrintWriter getLogWriter()(Code) Get the log writer. a print writer getName public String getName()(Code) Get the name of the driver. a text importKnowledgeBase public KnowledgeBase importKnowledgeBase(Document doc) throws XKBException(Code) Import a knowledge base, i.e., build it from an xml document. a knowledge base Parameters:   doc - an xml document exception:   an - XKBException is thrown if import fails importKnowledgeBase public KnowledgeBase importKnowledgeBase(Element e) throws XKBException(Code) Import a knowledge base. a knowledge base Parameters:   e - an xml element exception:   an - XKBException is thrown if import fails install public void install(XMLAdapter adapter)(Code) Install an adapter. Parameters:   adapter - an adapter setFaultToleranceLevel public void setFaultToleranceLevel(int level)(Code) Set the fault tolerance level. Parameters:   level - a number (see the constants defined in GenericDriver) setLogWriter public void setLogWriter(PrintWriter pw)(Code) Set the log writer. Parameters:   pw - a print writer supportsAutoFacts public boolean supportsAutoFacts()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports auto facts. a boolean supportsClauseSets public boolean supportsClauseSets()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports clause sets. a boolean supportsFacts public boolean supportsFacts()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports facts. (some formats might see facts as rules without body) a boolean supportsFunctions public boolean supportsFunctions()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports functions. a boolean supportsJavaSemantics public boolean supportsJavaSemantics()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports the java semantics (e.g. JFunctions, JPredicate). a boolean supportsMultiplePremises public boolean supportsMultiplePremises()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports multiple premises. a boolean supportsNegationAsFailure public boolean supportsNegationAsFailure()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports negation as failure. a boolean supportsOrPremises public boolean supportsOrPremises()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports multiple premises connected by OR. a boolean supportsQueries public boolean supportsQueries()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports queries. a boolean supportsTypes public boolean supportsTypes()(Code) Indicates whether the driver (and the underlying xml format (=dtd)) supports types. a boolean Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)