Examples of org.apache.excalibur.store.Store

org.apache.excalibur.store.Store
A Store is an object managing arbitrary data. It holds data stored under a given key persistently. So if you put something in a store you can be sure that the next time (even if the application restarted) your data is in the store (of course unless noone else did remove it). In some cases (like for example a cache) the data needs not to be persistent. Therefore with the two role TRANSIENT_STORE and PERSISTENT_STORE you get a store with exactly that behaviour. @author Avalon Development Team @version CVS $Id: Store.java,v 1.5 2004/02/28 11:47:34 cziegeler Exp $

        // Obtain the fragmentID  (which is simply the filename portion of the source)
        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Retrieving fragment " + source + ".");
        }


        Store store = null;
        XMLDeserializer deserializer = null;
        Object fragment = null;
        try {
            store = (Store) this.manager.lookup(Store.TRANSIENT_STORE);
            fragment = store.get(source);
            if (fragment == null) {
                throw new ResourceNotFoundException("Could not find fragment " + source + " in store");
            }


            deserializer = (XMLDeserializer) this.manager.lookup(XMLDeserializer.ROLE);

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            startGroup("Store Janitor");


            // For each element in StoreJanitor
            Iterator i = this.storeJanitor.iterator();
            while (i.hasNext()) {
                Store store = (Store) i.next();
                startGroup(store.getClass().getName() + " (hash = 0x" + Integer.toHexString(store.hashCode()) + ")");
                int size = 0;
                int empty = 0;
                atts.clear();
                atts.addAttribute(NAMESPACE, "name", "name", "CDATA", "cached");
                super.contentHandler.startElement(NAMESPACE, "value", "value", atts);


                atts.clear();
                Enumeration e = store.keys();
                while (e.hasMoreElements()) {
                    size++;
                    Object key = e.nextElement();
                    Object val = store.get(key);
                    String line;
                    if (val == null) {
                        empty++;
                    } else {
                        line = key + " (class: " + val.getClass().getName() + ")";

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  public void setup(SourceResolver resolver, Map objectmodel, String src, Parameters parameters)
    throws ProcessingException, SAXException, IOException
  {
    this.resolver = resolver;


    Store store = null;


    try
    {
      this.lexicon = src;


      this.lexiconSource = resolver.resolveURI(this.lexicon);


      // Retrieve the lexical automaton from the transient store
      store = (Store)this.manager.lookup(Store.TRANSIENT_STORE);


      LexicalAutomatonEntry entry = (LexicalAutomatonEntry)store.get(this.lexiconSource.getURI());


      // If the lexicon has changed, rebuild the lexical automaton
      if ((entry==null) || (entry.getValidity()==null) ||
          (entry.getValidity().isValid(this.lexiconSource.getValidity())<=0))
      {
        this.logger.info("(Re)building the automaton from '"+this.lexiconSource.getURI()+"'");


        if (this.lexiconSource.getInputStream()==null)
          throw new ProcessingException("Source '"+this.lexiconSource.getURI()+"' not found");


        LexiconFactory factory = new LexiconFactory();
        SourceUtil.toSAX(this.manager, this.lexiconSource, null, factory);


        Lexicon lexicon = factory.getLexicon();


        LexicalAutomatonBuilder builder =
          new LexicalAutomatonBuilder(lexicon/*, new AvalonLogger(this.logger)*/);


        this.automaton = builder.getLexicalAutomaton();


        this.logger.info("Store automaton into store for '"+this.lexiconSource.getURI()+"'");
        store.store(this.lexiconSource.getURI(),
                    new LexicalAutomatonEntry(this.automaton, this.lexiconSource.getValidity()));
      }
      else
      {
        this.logger.info("Getting automaton from store for '"+this.lexiconSource.getURI()+"'");

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                            (String)entry.getKey()
                        );
                    }
                    this.serializer.endDocument();


                    Store store = null;
                    String id = Long.toHexString((hashCode()^HashUtil.hash(requestURI)) + fragmentID);
                    try {
                        store = (Store) this.manager.lookup(Store.TRANSIENT_STORE);
                        store.store(id, this.serializer.getSAXFragment());
                    } catch (ServiceException se) {
                        throw new SAXException("Could not lookup for transient store.", se);
                    } catch (IOException ioe) {
                        throw new SAXException("Could not store fragment.", ioe);
                    } finally {

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                }
                setIndex(0);
            }


            // Delete proportionate elements out of the store as configured.
            Store store = (Store)getStoreList().get(getIndex());
            int limit = calcToFree(store);
            if (getLogger().isDebugEnabled()) 
            {
                getLogger().debug("Freeing " + limit + " items from store N " + getIndex());
            }
            for (int i=0; i < limit; i++) 
            {
                try
                {
                    store.free();
                } 
                catch (OutOfMemoryError e) 
                {
                    getLogger().error("OutOfMemoryError in freeMemory()");
                }

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                      Parameters parameters)
                        throws ProcessingException, SAXException,
                               IOException {


        this.resolver = resolver;
        Store store = null;


        try {
            this.lexicon = src;


            this.lexiconSource = resolver.resolveURI(this.lexicon);


            // Retrieve the parser table from the transient store
            store = (Store) this.manager.lookup(Store.TRANSIENT_STORE);
            LexicalAutomatonEntry entry = (LexicalAutomatonEntry) store.get(this.lexiconSource.getURI());


            // If the parser table has changed, rebuild the parser table
            if ((entry==null) || (entry.getValidity()==null) ||
                (entry.getValidity().isValid(this.lexiconSource.getValidity())<=
                 0)) {


                this.logger.info("(Re)building the automaton from '"+
                                 this.lexiconSource.getURI()+"'");


                SAXConfigurationHandler confighandler = new SAXConfigurationHandler();


                if (this.lexiconSource.getInputStream()==null) {
                    throw new ProcessingException("Source '"+
                                                  this.lexiconSource.getURI()+
                                                  "' not found");
                }
                SourceUtil.toSAX(this.manager, this.lexiconSource, null, confighandler);


                Configuration config = confighandler.getConfiguration();
                Lexicon lexicon = LexiconFactory.createLexicon(config);


                LexicalAutomatonBuilder builder = new LexicalAutomatonBuilder(lexicon,
                                                      this.logger);


                this.automaton = builder.getLexicalAutomaton();


                this.logger.info("Store automaton into store for '"+
                                 this.lexiconSource.getURI()+"'");


                store.store(this.lexiconSource.getURI(),
                            new LexicalAutomatonEntry(this.automaton,
                                                      this.lexiconSource.getValidity()));
            } else {
                this.logger.info("Getting automaton from store for '"+
                                 this.lexiconSource.getURI()+"'");

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                      Parameters parameters)
                        throws ProcessingException, SAXException,
                               IOException {


        this.resolver = resolver;
        Store store = null;


        try {
            this.grammar = src;


            this.grammarSource = resolver.resolveURI(this.grammar);


            // Retrieve the parser automaton from the transient store
            store = (Store) this.manager.lookup(Store.TRANSIENT_STORE);
            ParserAutomatonEntry entry = (ParserAutomatonEntry) store.get(this.grammarSource.getURI());


            // If the parser automaton has changed, rebuild the parser automaton
            if ((entry==null) || (entry.getValidity()==null) ||
                (entry.getValidity().isValid(this.grammarSource.getValidity()))<=
                0) {
                this.logger.info("(Re)building the automaton from '"+
                                 this.grammarSource.getURI()+"'");


                SAXConfigurationHandler confighandler = new SAXConfigurationHandler();


                if (this.grammarSource.getInputStream()==null) {
                    throw new ProcessingException("Source '"+
                                                  this.grammarSource.getURI()+
                                                  "' not found");
                }
                SourceUtil.toSAX(this.manager, this.grammarSource, null, confighandler);


                Configuration config = confighandler.getConfiguration();
                Grammar grammar = GrammarFactory.createGrammar(config);


                ParserAutomatonBuilder builder = new ParserAutomatonBuilder(grammar,
                                                     this.logger);


                this.automaton = builder.getParserAutomaton();


                this.logger.info("Store automaton into store for '"+
                                 this.grammarSource.getURI()+"'");
                store.store(this.grammarSource.getURI(),
                            new ParserAutomatonEntry(this.automaton,
                                                     this.grammarSource.getValidity()));
            } else {
                this.logger.info("Getting automaton from store for '"+
                                 this.grammarSource.getURI()+"'");

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            // For each Cache Store in Cocoon's StoreJanitor
            Iterator i = this.storeJanitor.iterator();
            while(i.hasNext())
            {
                // get the Cache Store
                Store store = (Store) i.next();


                // Store name is just the className (remove the package info though, just to save space)
                String storeName = store.getClass().getName();
                storeName = storeName.substring(storeName.lastIndexOf(".")+1); 


                // display its size information
                cocoon.addLabel(T_COCOON_TRANS_CACHE_SIZE.parameterize(storeName + ", 0x" + Integer.toHexString(store.hashCode())));
                cocoon.addItem(String.valueOf(store.size()));
            }
        }
    }

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                            (String)entry.getKey()
                        );
                    }
                    this.serializer.endDocument();


                    Store store = null;
                    String id = Long.toHexString((hashCode()^HashUtil.hash(requestURI))+fragmentID);
                    try {
                        store = (Store) this.manager.lookup(Store.TRANSIENT_STORE);


                        store.store(id, this.serializer.getSAXFragment());
                    } catch (ComponentException ce) {
                        throw new SAXException("Could not lookup for transient store.", ce);
                    } catch (IOException ioe) {
                        throw new SAXException("Could not store fragment.", ioe);
                    } finally

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        try {
            if (configuration != null && !this.getIsAdminProfile(profileID)) {
                final String storePrefix = (String)configuration.get(PortalConstants.CONF_PROFILE_CACHE);
                if (storePrefix != null) {
                    final String key = profileID.substring(1);
                    final Store store = this.getProfileStore();
                    if (store.containsKey(key)) {
                        result = (Map)store.get(key);
                    }
                }
            }
        } catch (Exception local) {
            // local exceptions are ignored

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Related Classes of org.apache.excalibur.store.Store

org.apache.cocoon.acting.ClearPersistentStoreAction

org.apache.cocoon.components.store.impl.StoreJanitorImpl

org.apache.cocoon.generation.FragmentExtractorGenerator

org.apache.cocoon.generation.StatusGenerator

org.apache.cocoon.storejanitor.StoreJanitorImpl

org.apache.cocoon.transformation.ExtendedParserTransformer

org.apache.cocoon.transformation.FragmentExtractorTransformer

org.apache.cocoon.transformation.LexicalTransformer

org.apache.cocoon.transformation.ParserTransformer

org.apache.cocoon.transformation.PatternTransformer

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