org.alfresco.web.forms.xforms.Schema2XFormsProperties.java Source code

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Here is the source code for org.alfresco.web.forms.xforms.Schema2XFormsProperties.java

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/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>. */
package org.alfresco.web.forms.xforms;

import java.io.InputStream;
import java.util.*;
import org.alfresco.model.ContentModel;
import org.alfresco.service.cmr.repository.ContentService;
import org.alfresco.service.cmr.search.ResultSet;
import org.alfresco.service.cmr.search.SearchService;
import org.alfresco.service.namespace.NamespaceService;
import org.alfresco.service.cmr.repository.ContentReader;
import org.alfresco.service.cmr.repository.ContentService;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.web.bean.repository.Repository;
import org.alfresco.web.forms.Form;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author Ariel Backenroth
 */
public class Schema2XFormsProperties {
    /////////////////////////////////////////////////////////////////////////////

    private class ResourceBundleWrapper extends ResourceBundle {

        private final ResourceBundle bundle;
        private final ResourceBundle parent;

        public ResourceBundleWrapper(final ResourceBundle bundle, final ResourceBundle parent) {
            LOGGER.debug("creating bundle " + bundle + " with parent " + parent);
            this.bundle = bundle;
            this.parent = parent;
        }

        public Enumeration<String> getKeys() {
            final Enumeration<String> bk = bundle.getKeys();
            final Enumeration<String> pk = parent.getKeys();
            return new Enumeration<String>() {

                public boolean hasMoreElements() {
                    return bk.hasMoreElements() || pk.hasMoreElements();
                }

                public String nextElement() {
                    return (bk.hasMoreElements() ? bk.nextElement() : pk.nextElement());
                }
            };
        }

        protected Object handleGetObject(final String key) {
            try {
                return this.bundle.getObject(key);
            } catch (MissingResourceException mre1) {
                try {
                    return this.parent.getObject(key);
                } catch (MissingResourceException mre2) {
                    return null;
                }
            }
        }
    }

    /////////////////////////////////////////////////////////////////////////////

    private static final Log LOGGER = LogFactory.getLog(Schema2XFormsProperties.class);

    private final ContentService contentService;
    private final NamespaceService namespaceService;
    private final NodeService nodeService;
    private final SearchService searchService;
    private boolean formatCaption = true;
    private String[] locations;

    public Schema2XFormsProperties(final ContentService contentService, final NamespaceService namespaceService,
            final NodeService nodeService, final SearchService searchService) {
        this.contentService = contentService;
        this.namespaceService = namespaceService;
        this.nodeService = nodeService;
        this.searchService = searchService;
    }

    public ResourceBundle getResourceBundle(final Form form, final Locale locale) {
        final LinkedList<ResourceBundle> bundles = new LinkedList<ResourceBundle>();
        for (String location : this.locations) {
            ClassLoader loader = Thread.currentThread().getContextClassLoader();
            location = location.replace("${form.name}",
                    (NamespaceService.CONTENT_MODEL_PREFIX + ':' + form.getName()));
            if (location.startsWith("alfresco:")) {
                location = location.substring("alfresco:".length());
                loader = new ClassLoader(loader) {
                    public InputStream getResourceAsStream(String name) {
                        LOGGER.debug("loading resource " + name);
                        final ResultSet results = searchService.query(Repository.getStoreRef(),
                                SearchService.LANGUAGE_LUCENE, "PATH:\"" + name + "\"");
                        try {
                            LOGGER.debug("search returned " + results.length() + " results");
                            if (results.length() == 1) {
                                final NodeRef nr = results.getNodeRef(0);
                                final ContentReader reader = contentService.getReader(nr,
                                        ContentModel.PROP_CONTENT);
                                return reader.getContentInputStream();
                            } else {
                                return super.getResourceAsStream(name);
                            }
                        } finally {
                            results.close();
                        }
                    }
                };
            } else if (location.startsWith("classpath:")) {
                location = location.substring("classpath:".length());
            }

            LOGGER.debug("using loader " + loader + " for location " + location);
            try {
                final ResourceBundle rb = ResourceBundle.getBundle(location, locale, loader);
                LOGGER.debug("found bundle " + rb + " for location " + location);
                bundles.addFirst(rb);
            } catch (MissingResourceException mse) {
                LOGGER.debug("unable to located bundle at " + location + ": " + mse.getMessage());
            }
        }

        ResourceBundle result = null;
        for (ResourceBundle rb : bundles) {
            result = (result == null ? rb : new ResourceBundleWrapper(rb, result));
        }
        return result;
    }

    public void setLocations(final String[] locations) {
        this.locations = locations;
    }

    public boolean isFormatCaption() {
        return formatCaption;
    }

    public void setFormatCaption(boolean formatCaption) {
        this.formatCaption = formatCaption;
    }

    public String toString() {
        return (this.getClass().getName() + "{" + StringUtils.join(this.locations, ",") + "}");
    }
}