org.mgnlconfig.yaml.dependency.JcrNodeConfigDependency Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of light-yaml Show documentation
Enhances extension capabilities of Yaml configuration files (~ to JCR 'extends' property), provides connection to the JCR config workspace and to all the registries as well
The newest version!
/**
 * This file Copyright (c) 2016 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the Magnolia
 * Network Agreement and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or MNA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Magnolia Network Agreement (MNA), this file
 * and the accompanying materials are made available under the
 * terms of the MNA which accompanies this distribution, and
 * is available at http://www.magnolia-cms.com/mna.html
 *
 * Any modifications to this file must keep this entire header
 * intact.
 *
 */
package org.mgnlconfig.yaml.dependency;

import info.magnolia.context.Context;
import info.magnolia.jcr.decoration.ContentDecorator;
import info.magnolia.jcr.iterator.FilteringNodeIterator;
import info.magnolia.jcr.iterator.FilteringPropertyIterator;
import info.magnolia.jcr.predicate.AbstractPredicate;
import info.magnolia.jcr.util.NodeTypes;
import info.magnolia.jcr.util.PropertyUtil;
import info.magnolia.jcr.wrapper.ExtendingNodeWrapper;
import info.magnolia.repository.RepositoryConstants;

import java.util.Collections;
import java.util.Map;

import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Property;
import javax.jcr.PropertyIterator;
import javax.jcr.RepositoryException;

import com.google.common.collect.Maps;

public class JcrNodeConfigDependency implements ConfigDependency {

    private final String nodePath;

    private final Context context;

    private long lastResolved = -1;

    public JcrNodeConfigDependency(String nodePath, Context context) {
        this.nodePath = nodePath;
        this.context = context;
    }

    @Override
    public boolean needsUpdate() {
        try {
            return context.getJCRSession(RepositoryConstants.CONFIG).getNode(nodePath).getProperty("mgnl:lastResolved").getDate().getTimeInMillis() > lastResolved;
        } catch (RepositoryException e) {
            return true;
        }
    }

    @Override
    public Object getRawData() {
        try {
            lastResolved = System.currentTimeMillis();
            final Node node = context.getJCRSession(RepositoryConstants.CONFIG).getNode(nodePath);
            return toMap(node);
        } catch (RepositoryException e) {
            return Collections.emptyMap();
        }
    }

    private Map toMap(Node node) {
        node = new ExtendingNodeWrapper(node);
        final Map result = Maps.newHashMap();

        try {
            final PropertyIterator it = new FilteringPropertyIterator(node.getProperties(), new AbstractPredicate() {
                @Override
                public boolean evaluateTyped(Property t) {
                    try {
                        return !(t.getName().startsWith(NodeTypes.JCR_PREFIX) || t.getName().startsWith(NodeTypes.MGNL_PREFIX));
                    } catch (RepositoryException e) {
                        return false;
                    }
                }
            }, (ContentDecorator) null);

            while (it.hasNext()) {
                Property p = it.nextProperty();
                Object val = PropertyUtil.getValueObject(p.getValue());
                if (val != null) {
                    result.put(p.getName(), val);
                }
            }

            final NodeIterator nodes = new FilteringNodeIterator(node.getNodes(), new AbstractPredicate() {
                @Override
                public boolean evaluateTyped(Node t) {
                    try {
                        return !(t.getName().startsWith(NodeTypes.JCR_PREFIX) || t.isNodeType(NodeTypes.MetaData.NAME));
                    } catch (RepositoryException e) {
                        return false;
                    }
                }
            });

            while (nodes.hasNext()) {
                final Node child = nodes.nextNode();
                final Map childMap = toMap(child);
                result.put(child.getName(), childMap);
            }

            return result;
        } catch (RepositoryException e) {
            return Collections.emptyMap();
        }
    }
}