/**
* The Semantic-Bridging method. Check the service-description file and see which method has the
* user chosen for the semantic bridging. Then fetch method-related supplementary info from the
* property file and hand over control to the appropriate component.
*/
public void semanticBridging() throws Exception {
SemanticBridging cimp = null;
String bridgingMethod = sProps.getProperty(BRIDGING_METHOD);
if (bridgingMethod.equalsIgnoreCase(GENERIC)) {
cimp = new GenericBridger();
} else if (bridgingMethod.equalsIgnoreCase(JAVA)) {
String customJavaClass = sProps.getProperty(CLASS_NAME);
cimp = new JavaComponent(customJavaClass);
} else {
throw new Exception("Not supported");
}
/*print("DefaultComponentImplFactory === semanticBridging -> sourceOntology=[" + sourceOntology + "]");
print("DefaultComponentImplFactory === semanticBridging -> targetOntology=[" + targetOntology + "]");
print("DefaultComponentImplFactory === semanticBridging -> bridgeOntology=[" + bridgeOntology + "]");
print("DefaultComponentImplFactory === semanticBridging -> bridgeRepository=[" + bridgeRepository + "]");*/
cimp.semanticBridging(
sourceOntology,
targetOntology,
bridgeOntology,
bridgeRepository,
otherOntologies,
bridgingResultFilepath);
}
/**
* The Semantic-Grounding method. Check the service-description file and see which method has the
* user chosen for the semantic grounding. Then fetch method-related supplementary info from the
* property file and hand over control to the appropriate component.
*/
public MessageExchange semanticGrounding(MessageExchange msgExchange) throws Exception {
SemanticGrounding cimp = null;
String groundingMethod = sProps.getProperty(GROUNDING_METHOD);
if (groundingMethod.equalsIgnoreCase(XLST)) {
// LIFTING_CUSTOM_FILE may be null, but we need only the grounding
String customLiftingFile = null;
String customGroundingFile = stylesheetsDir + sProps.getProperty(GROUNDING_CUSTOM_FILE);
try {
customLiftingFile = sProps.getProperty(GROUNDING_CUSTOM_FILE);
customLiftingFile = stylesheetsDir + customGroundingFile;
} catch (Exception ex) {
}
cimp = new XSLTComponent(customLiftingFile, customGroundingFile);
} else if (groundingMethod.equalsIgnoreCase(JAVA)) {
String customJavaClass = sProps.getProperty(CLASS_NAME);
cimp = new JavaComponent(customJavaClass);
} else {
throw new Exception("Not supported");
}
return cimp.semanticGrounding(msgExchange, bridgingResultFilepath);
}
/**
* The Semantic-Lifting method. Check the service-description file and see which method has the
* user chosen for the semantic lifting. Then fetch method-related supplementary info from the
* property file and hand over control to the appropriate component.
*/
public void semanticLifting(MessageExchange msgExchange) throws Exception {
SemanticLifting cimp = null;
/** decide here which class_method to call */
String liftingMethod = sProps.getProperty(LIFTING_METHOD);
if (liftingMethod.equalsIgnoreCase(XLST)) {
String customLiftingFile = stylesheetsDir + sProps.getProperty(LIFTING_CUSTOM_FILE);
// GROUNDING_CUSTOM_FILE may be null; don't care. but add the path only if not null
print("DefaultComponentImplFactory === semanticLifting -> XSLT");
String customGroundingFile = null;
try {
customGroundingFile = sProps.getProperty(LIFTING_CUSTOM_FILE);
customGroundingFile = stylesheetsDir + customGroundingFile;
} catch (Exception ex) {
}
cimp = new XSLTComponent(customLiftingFile, customLiftingFile);
} else if (liftingMethod.equalsIgnoreCase(JAVA)) {
String customJavaClass = sProps.getProperty(CLASS_NAME);
cimp = new JavaComponent(customJavaClass);
print("DefaultComponentImplFactory === semanticLifting -> JAVA");
} else {
throw new Exception("Not supported");
}
cimp.semanticLifting(msgExchange, sourceOntology, sourceInstance);
/** set the source_Ontology path to the created source+instance */
sourceOntology = sourceInstance;
}
/**
* Initializes the class members. It creates the instance runtime-directory of the mapping, set
* the ontologies and XSLT stylesheets directory and the file paths to the ontology (source,
* bridge etc.) files. Finally, it copies the necessary ontology files to the instance-directory.
*/
public void init() throws Exception {
String serviceName = sProps.getProperty(SERVICE_NAME);
serviceWorkingDir =
CredentialsTranslator.RUNTIME_DIR + File.separator + serviceName + File.separator;
instanceDir =
CredentialsTranslator.ONTOLOGY_FOLDER
+ "Results_"
+ String.valueOf(System.currentTimeMillis())
+ File.separator;
stylesheetsDir = serviceWorkingDir + CredentialsTranslator.XSLT_FOLDER + File.separator;
(new File(serviceWorkingDir + instanceDir)).mkdirs();
// set file paths accordingly
String sourceOntFromProp = sProps.getProperty(SOURCE_ONTOLOGY);
String targetOntFromProp = sProps.getProperty(TARGET_ONTOLOGY);
String bridgeOntFromProp = sProps.getProperty(BRIDGE_ONTOLOGY);
String bridgeOntRepository =
bridgeOntFromProp.substring(0, bridgeOntFromProp.lastIndexOf(".")) + "." + "repository";
/** set class variables that will be used from here on */
sourceInstance = serviceWorkingDir + instanceDir + sourceOntFromProp;
sourceOntology = serviceWorkingDir + CredentialsTranslator.ONTOLOGY_FOLDER + sourceOntFromProp;
targetOntology = serviceWorkingDir + CredentialsTranslator.ONTOLOGY_FOLDER + targetOntFromProp;
bridgeOntology = serviceWorkingDir + instanceDir + bridgeOntFromProp;
bridgeRepository = serviceWorkingDir + instanceDir + bridgeOntRepository;
// this will be used within the xslt document() and must be fullpath.
File dir = new File(".");
bridgingResultFilepath =
dir.getCanonicalPath()
+ File.separator
+ serviceWorkingDir
+ instanceDir
+ "resultOfBridging.owl";
String otherOntFromProp = null;
try {
otherOntFromProp = sProps.getProperty(OTHER_ONTOLOGIES);
} catch (Exception e) {
// Property not found
}
if (otherOntFromProp != null) {
String[] onts = otherOntFromProp.split(",");
otherOntologies = new ArrayList<String>(onts.length);
for (int i = 0; i < onts.length; i++) {
otherOntologies.add(
serviceWorkingDir + CredentialsTranslator.ONTOLOGY_FOLDER + onts[i].trim());
}
}
// copy files to the instance directory
CredentialsTranslator.copyFile(
serviceWorkingDir + CredentialsTranslator.ONTOLOGY_FOLDER + bridgeOntFromProp,
serviceWorkingDir + instanceDir + bridgeOntFromProp);
}