Examples of org.apache.stanbol.enhancer.servicesapi.EnhancementEngine.computeEnhancements()

Package org.apache.stanbol.enhancer.servicesapi

Class org.apache.stanbol.enhancer.servicesapi.EnhancementEngine

Examples of org.apache.stanbol.enhancer.servicesapi.EnhancementEngine.computeEnhancements()

org.apache.stanbol.enhancer.servicesapi.EnhancementEngine.computeEnhancements()
Compute enhancements for supplied ContentItem. The results of the process are expected to be stored in the {@link ContentItem#getMetadata() metadata of the content item} or by adding/modifying any contentPart.
Engines that do support {@link #ENHANCE_ASYNC} are required to use the{@link ContentItem#getLock()} to acquire read/write locks when reading/modifying information of the {@link ContentItem}. For Engines that that do use {@link #ENHANCE_SYNCHRONOUS} the {@link EnhancementJobManager}is responsible to acquire a write lock before calling this method.
NOTE: If an EnhancementEngine can not extract any information it is expected to return. In case an error is encountered during processing an {@link EngineException} need to be thrown. @param ci The ContentItem to enhance @throws EngineException if the underlying process failed to work asexpected

            if (engine.canEnhance(ci) == EnhancementEngine.CANNOT_ENHANCE) {
                log.debug("[{}] cannot be enhanced by engine [{}], skipping",
                        ci.getUri().getUnicodeString(), engine);
            } else {
                // TODO should handle sync/async enhancing. All sync for now.
                engine.computeEnhancements(ci);
                log.debug("ContentItem [{}] enhanced by engine [{}] in {}ms",
                        new Object[]{ci.getUri().getUnicodeString(), engine,System.currentTimeMillis()-startEngine});
            }
        }
        log.debug("ContentItem [{}] enhanced in {}ms",ci.getUri().getUnicodeString(),(System.currentTimeMillis()-start));

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                //ensure that this engine exclusively access the content item
                log.trace("++ w: {}: {}","start sync execution", engine.getName());
                job.getLock().writeLock().lock();
                log.trace(">> w: {}: {}","start sync execution", engine.getName());
                try {
                    engine.computeEnhancements(job.getContentItem());
                    job.setCompleted(execution);
                } catch (EngineException e){
                    log.warn(e.getMessage(),e);
                    job.setFailed(execution, engine, e);
                } catch (RuntimeException e){

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                    job.getLock().writeLock().unlock();
                }
            } else if(engineState == EnhancementEngine.ENHANCE_ASYNC){
                try {
                    log.trace("++ n: start async execution of Engine {}",engine.getName());
                    engine.computeEnhancements(job.getContentItem());
                    log.trace("++ n: finished async execution of Engine {}",engine.getName());
                    job.setCompleted(execution);
                } catch (EngineException e) {
                    log.warn(e.getMessage(),e);
                    job.setFailed(execution, engine, e);

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                //ensure that this engine exclusively access the content item
                log.trace("++ w: {}: {}","start sync execution", engine.getName());
                job.getLock().writeLock().lock();
                log.trace(">> w: {}: {}","start sync execution", engine.getName());
                try {
                    engine.computeEnhancements(job.getContentItem());
                    job.setCompleted(execution);
                } catch (EngineException e){
                    log.warn(e.getMessage(),e);
                    job.setFailed(execution, engine, e);
                } catch (RuntimeException e){

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                    job.getLock().writeLock().unlock();
                }
            } else if(engineState == EnhancementEngine.ENHANCE_ASYNC){
                try {
                    log.trace("++ n: start async execution of Engine {}",engine.getName());
                    engine.computeEnhancements(job.getContentItem());
                    log.trace("++ n: finished async execution of Engine {}",engine.getName());
                    job.setCompleted(execution);
                } catch (EngineException e) {
                    log.warn(e.getMessage(),e);
                    job.setFailed(execution, engine, e);

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                //ensure that this engine exclusively access the content item
                log.debug("++ w: {}: {}","start sync execution", engine.getName());
                job.getLock().writeLock().lock();
                log.debug(">> w: {}: {}","start sync execution", engine.getName());
                try {
                    engine.computeEnhancements(job.getContentItem());
                    job.setCompleted(execution);
                } catch (EngineException e){
                    job.setFailed(execution, engine, e);
                } finally{
                    log.debug("<< w: {}: {}","finished sync execution", engine.getName());

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                    job.getLock().writeLock().unlock();
                }
            } else if(engineState == EnhancementEngine.ENHANCE_ASYNC){
                try {
                    log.debug("++ n: start async execution of Engine {}",engine.getName());
                    engine.computeEnhancements(job.getContentItem());
                    log.debug("++ n: finished async execution of Engine {}",engine.getName());
                    job.setCompleted(execution);
                } catch (EngineException e) {
                    job.setFailed(execution, engine, e);
                }

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