public DRLInfo generateParsedResource(String content,
IResource resource,
boolean useCache,
boolean compile) throws DroolsParserException {
useCache = useCache && useCachePreference;
DrlParser parser = new DrlParser();
try {
Reader dslReader = DSLAdapter.getDSLContent( content,
resource );
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
ClassLoader newLoader = DroolsBuilder.class.getClassLoader();
String level = null;
// resource could be null when opening a read-only remote file
if ( resource != null && resource.getProject().getNature( "org.eclipse.jdt.core.javanature" ) != null ) {
IJavaProject project = JavaCore.create( resource.getProject() );
newLoader = ProjectClassLoader.getProjectClassLoader( project );
level = project.getOption( JavaCore.COMPILER_COMPLIANCE,
true );
}
try {
Thread.currentThread().setContextClassLoader( newLoader );
PackageBuilderConfiguration builder_configuration = new PackageBuilderConfiguration();
if ( level != null ) {
JavaDialectConfiguration javaConf = (JavaDialectConfiguration) builder_configuration.getDialectConfiguration( "java" );
javaConf.setJavaLanguageLevel( level );
}
builder_configuration.getClassLoader().addClassLoader( newLoader );
// first parse the source
PackageDescr packageDescr = null;
List<DroolsError> parserErrors = null;
if ( useCache && resource != null) {
DRLInfo cachedDrlInfo = (DRLInfo) parsedRules.get( resource );
if ( cachedDrlInfo != null ) {
packageDescr = cachedDrlInfo.getPackageDescr();
parserErrors = cachedDrlInfo.getParserErrors();
}
}
if ( packageDescr == null ) {
if ( dslReader != null ) {
packageDescr = parser.parse( true, content, dslReader );
} else {
packageDescr = parser.parse( true, content );
}
parserErrors = parser.getErrors();
}
PackageBuilder builder = new PackageBuilder( builder_configuration );
DRLInfo result = null;
// compile parsed rules if necessary
if ( packageDescr != null && compile && !parser.hasErrors()) {
// check whether a .package file exists and add it
if ( resource != null && resource.getParent() != null ) {
MyResourceVisitor visitor = new MyResourceVisitor();
resource.getParent().accept( visitor,
IResource.DEPTH_ONE,
IResource.NONE );
IResource packageDef = visitor.getPackageDef();
if ( packageDef != null ) {
PackageDescr desc = parseResource( packageDef,
false ).getPackageDescr();
if (desc != null){
builder.addPackage( desc);
}
}
}
builder.addPackage( packageDescr );
// make sure the namespace is set, use default if necessary, as this is used to build the DRLInfo
if ( StringUtils.isEmpty( packageDescr.getNamespace() ) ) {
packageDescr.setNamespace( builder.getPackageBuilderConfiguration().getDefaultPackageName() );
}
result = new DRLInfo( resource == null ? "" : resource.getProjectRelativePath().toString(),
packageDescr,
parserErrors,
builder.getPackageRegistry(packageDescr.getNamespace()).getPackage(),
builder.getErrors().getErrors(),
builder.getPackageRegistry( packageDescr.getNamespace() ).getDialectCompiletimeRegistry() );
} else {
result = new DRLInfo( resource == null ? "" : resource.getProjectRelativePath().toString(),
packageDescr,
parserErrors,
new PackageRegistry(builder, new Package("")).getDialectCompiletimeRegistry() );
}
// cache result
if ( useCache && resource != null) {
if ( compile && !parser.hasErrors() ) {
parsedRules.remove( resource );
compiledRules.put( resource,
result );
RuleInfo[] ruleInfos = result.getRuleInfos();
for ( int i = 0; i < ruleInfos.length; i++ ) {