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 $


    public void generate() throws SAXException {
        // Obtain the fragmentID  (which is simply the filename portion of the source)
        getLogger().debug("FragmentExtractorGenerator retrieving document " + 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 SAXException("Could not find frament with id " + source + " in store");


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

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        try {
            if (configuration != null && this.getIsAdminProfile(profileID) == false) {
                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) == true) {
                        result = (Map)store.get(key);
                    }
                }
            }
        } catch (Exception local) {
            // local exceptions are ignored

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        if (configuration != null
            && type != null
            && type.equals(PortalManager.BUILDTYPE_VALUE_ID) == false) {
            String storePrefix = (String)configuration.get(PortalConstants.CONF_PROFILE_CACHE);
            if (storePrefix != null) {
                Store store = this.getProfileStore();
                Enumeration keys = store.keys();
                String   currentKey;
                String  deleteGlobal = null;
                String  deleteRole = null;
                String  deleteUser = null;


                if (type.equals(PortalManager.BUILDTYPE_VALUE_BASIC) == true ||
                    type.equals(PortalManager.BUILDTYPE_VALUE_GLOBAL) == true) {
                    if (type.equals(PortalManager.BUILDTYPE_VALUE_BASIC) == true) {
                        deleteGlobal = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false).substring(1);
                    }
                    deleteRole = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                    deleteRole = deleteRole.substring(1, deleteRole.lastIndexOf(':')+1) + PortalManager.BUILDTYPE_VALUE_ROLE;
                    deleteUser = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                    deleteUser = deleteUser.substring(1, deleteUser.lastIndexOf(':')+1) + PortalManager.BUILDTYPE_VALUE_ID;
                } else { // role
                    deleteGlobal = this.getProfileID(PortalManager.BUILDTYPE_VALUE_ROLE, role, null, false).substring(1);
                    deleteUser = this.getProfileID(PortalManager.BUILDTYPE_VALUE_ID, role, "a", false);
                    deleteUser = deleteUser.substring(1, deleteUser.length()-1);
                }


                while (keys.hasMoreElements() == true) {
                    currentKey = (String)keys.nextElement();
                    if (deleteGlobal != null && currentKey.equals(deleteGlobal) == true) {
                        store.remove(currentKey);
                    } else if (deleteRole != null && currentKey.startsWith(deleteRole) == true) {
                        store.remove(currentKey);
                    } else if (deleteUser != null && currentKey.startsWith(deleteUser) == true) {
                        store.remove(currentKey);
                    }
                }
            }
        } else if (configuration != null && type == null) {
            // clean whole cache
            String storePrefix = (String)configuration.get(PortalConstants.CONF_PROFILE_CACHE);
            if (storePrefix != null) {
                Store store = this.getProfileStore();
                Enumeration keys = store.keys();
                String currentKey;
                String delete;


                delete = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                delete = delete.substring(1, delete.lastIndexOf(':') + 1);
                while (keys.hasMoreElements() == true) {
                    currentKey = (String)keys.nextElement();
                    if (currentKey.startsWith(delete) == true) {
                        store.remove(currentKey);
                    }
                }
            }
        }

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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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     *@param  remove  The number of items to be removed.
     *@return         the remaining count of items, that could not be removed.
     *@since
     */
    private int reduceStoreBy(int remove) {
        Store store = (Store) storelist.get(index);
        int sizeBefore = countSize(store);
        for (int i = 0; i < sizeBefore & remove > 0; i++, remove--) {
            store.free();
        }
        int sizeAfter = countSize(store);
        debug("store index=" + index + ", size before=" + sizeBefore + ",  size after=" + sizeAfter + ", removed=" + (sizeBefore - sizeAfter));
        return remove;
    }

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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 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()+"'");


                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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                }
                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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        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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        if (configuration != null
            && type != null
            && !type.equals(PortalManager.BUILDTYPE_VALUE_ID)) {
            String storePrefix = (String)configuration.get(PortalConstants.CONF_PROFILE_CACHE);
            if (storePrefix != null) {
                Store store = this.getProfileStore();
                Enumeration keys = store.keys();
                String   currentKey;
                String  deleteGlobal = null;
                String  deleteRole = null;
                String  deleteUser = null;


                if (type.equals(PortalManager.BUILDTYPE_VALUE_BASIC) ||
                    type.equals(PortalManager.BUILDTYPE_VALUE_GLOBAL)) {
                    if (type.equals(PortalManager.BUILDTYPE_VALUE_BASIC)) {
                        deleteGlobal = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false).substring(1);
                    }
                    deleteRole = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                    deleteRole = deleteRole.substring(1, deleteRole.lastIndexOf(':')+1) + PortalManager.BUILDTYPE_VALUE_ROLE;
                    deleteUser = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                    deleteUser = deleteUser.substring(1, deleteUser.lastIndexOf(':')+1) + PortalManager.BUILDTYPE_VALUE_ID;
                } else { // role
                    deleteGlobal = this.getProfileID(PortalManager.BUILDTYPE_VALUE_ROLE, role, null, false).substring(1);
                    deleteUser = this.getProfileID(PortalManager.BUILDTYPE_VALUE_ID, role, "a", false);
                    deleteUser = deleteUser.substring(1, deleteUser.length()-1);
                }


                while (keys.hasMoreElements()) {
                    currentKey = (String)keys.nextElement();
                    if (deleteGlobal != null && currentKey.equals(deleteGlobal)) {
                        store.remove(currentKey);
                    } else if (deleteRole != null && currentKey.startsWith(deleteRole)) {
                        store.remove(currentKey);
                    } else if (deleteUser != null && currentKey.startsWith(deleteUser)) {
                        store.remove(currentKey);
                    }
                }
            }
        } else if (configuration != null && type == null) {
            // clean whole cache
            String storePrefix = (String)configuration.get(PortalConstants.CONF_PROFILE_CACHE);
            if (storePrefix != null) {
                Store store = this.getProfileStore();
                Enumeration keys = store.keys();
                String currentKey;
                String delete;


                delete = this.getProfileID(PortalManager.BUILDTYPE_VALUE_GLOBAL, null, null, false);
                delete = delete.substring(1, delete.lastIndexOf(':') + 1);
                while (keys.hasMoreElements()) {
                    currentKey = (String)keys.nextElement();
                    if (currentKey.startsWith(delete)) {
                        store.remove(currentKey);
                    }
                }
            }
        }

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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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