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/*
 * Copyright 2010-2011 Craig S. Dickson (http://craigsdickson.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.squeakysand.jcr;

import java.util.*;
import javax.jcr.AccessDeniedException;
import javax.jcr.ItemNotFoundException;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.PathNotFoundException;
import javax.jcr.Property;
import javax.jcr.PropertyIterator;
import javax.jcr.RepositoryException;
import javax.jcr.Value;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SimpleNode extends DelegatingNode implements Node {

    private static final String SLING_RESOURCE_TYPE = "sling:resourceType";

    private static final Logger LOG = LoggerFactory.getLogger(SimpleNode.class);

    public static SimpleNode asSimpleNode(Node node) {
        SimpleNode result = null;
        if (node != null) {
            if (node instanceof SimpleNode) {
                result = (SimpleNode) node;
            } else {
                result = new SimpleNode(node);
            }
        }
        return result;
    }

    public SimpleNode(Node node) {
        super(node);
    }

    public List getAllChildNodes() {
        return getChildNodes(ItemFilter.ACCEPT_ALL);
    }

    public List getAllProperties() {
        return getProperties(ItemFilter.ACCEPT_ALL);
    }

    public SimpleNode getAncestorByPropertyValue(String propertyName, Value value) {
        SimpleNode result = null;
        SimpleNode ancestor = getSimpleParent();
        while (ancestor != null) {
            try {
                if (ancestor.hasProperty(propertyName)) {
                    Property ancestorProperty = ancestor.getProperty(propertyName);
                    Value ancestorPropertyValue = ancestorProperty.getValue();
                    if (value == null && ancestorPropertyValue == null) {
                        result = ancestor;
                        break;
                    } else if (ancestorPropertyValue != null && ancestorPropertyValue.equals(value)) {
                        result = ancestor;
                        break;
                    }
                }
            } catch (RepositoryException e) {
                LOG.error(e.getMessage(), e);
            }
            ancestor = ancestor.getSimpleParent();
        }
        return result;
    }

    public boolean getBooleanProperty(String propertyName) {
        boolean result = Boolean.FALSE;
        try {
            if (hasProperty(propertyName)) {
                result = getProperty(propertyName).getBoolean();
            }
        } catch (PathNotFoundException e) {
            LOG.trace(e.getMessage(), e);
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
        }
        return result;
    }

    public List getChildNodes(ItemFilter filter) {
        List result = null;
        if (filter == null) {
            result = getAllChildNodes();
        } else {
            try {
                NodeIterator nodeIterator = getNodes();
                result = new ArrayList();
                while (nodeIterator.hasNext()) {
                    Node node = nodeIterator.nextNode();
                    if (filter.filter(node)) {
                        result.add(new SimpleNode(node));
                    }
                }
            } catch (RepositoryException e) {
                LOG.error(e.getMessage(), e);
            }
        }
        if (result == null) {
            result = Collections.emptyList();
        }
        return result;
    }

    public String getDescription() {
        return getStringProperty(Property.JCR_DESCRIPTION);
    }

    public Long getLongProperty(String propertyName) {
        Long result = null;
        try {
            Property property = getProperty(propertyName);
            result = property.getLong();
        } catch (PathNotFoundException e) {
            LOG.trace(e.getMessage(), e);
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
        }
        return result;
    }

    public List getMultiValuedStringProperty(String propertyName) {
        List result = new ArrayList();
        try {
            Property property = getProperty(propertyName);
            if (property.isMultiple()) {
                Value[] values = property.getValues();
                for (Value value : values) {
                    result.add(value.getString());
                }
            } else {
                result.add(property.getString());
            }
        } catch (PathNotFoundException e) {
            LOG.trace(e.getMessage(), e);
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
        }
        return result;
    }

    public List getProperties(ItemFilter filter) {
        List result = null;
        if (filter == null) {
            result = getAllProperties();
        } else {
            try {
                PropertyIterator propertyIterator = getProperties();
                result = new ArrayList();
                while (propertyIterator.hasNext()) {
                    Property property = propertyIterator.nextProperty();
                    if (filter.filter(property)) {
                        result.add(property);
                    }
                }
            } catch (RepositoryException e) {
                LOG.error(e.getMessage(), e);
            }
        }
        if (result == null) {
            result = Collections.emptyList();
        }
        return result;
    }

    public String getStringProperty(String propertyName) {
        String result = null;
        String simplePropertyName = null;
        try {
            simplePropertyName = new Name(propertyName, getSession().getWorkspace().getNamespaceRegistry()).getSimpleName();
            Property property = getProperty(simplePropertyName);
            result = property.getString();
        } catch (PathNotFoundException e) {
            LOG.trace(e.getMessage(), e);
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("property {} with simple name {} on node {} was {}", new Object[] {propertyName, simplePropertyName, this, result});
        }
	return result;
    }

    public List getStringPropertyValues(String propertyName) {
        throw new RuntimeException();

    }

    public String getTitle() {
        return getStringProperty(Property.JCR_TITLE);
    }

    @Override
    public String toString() {
        try {
            return "SimpleNode{" + getPath() + '}';
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
            return e.getMessage();
        }
    }

    public SimpleNode getSimpleParent() {
        Node parent = null;
        try {
            parent = getParent();
        } catch (ItemNotFoundException e) {
            LOG.error(e.getMessage(), e);
        } catch (AccessDeniedException e) {
            LOG.error(e.getMessage(), e);
        } catch (RepositoryException e) {
            LOG.error(e.getMessage(), e);
        }
        return asSimpleNode(parent);
    }

    public boolean isCreatedBefore(Node node) {
        throw new RuntimeException();
    }

    public boolean isCreatedBefore(Date date) {
        throw new RuntimeException();
    }

    public boolean isCreatedAfter(Node node) {
        throw new RuntimeException();
    }

    public boolean isCreatedAfter(Date date) {
        throw new RuntimeException();
    }

    public boolean isCreatedInRange(Date start, Date end) {
        throw new RuntimeException();
    }

    public boolean isModifiedBefore(Node node) {
        throw new RuntimeException();
    }

    public boolean isModifiedBefore(Date date) {
        throw new RuntimeException();
    }

    public boolean isModifiedAfter(Node node) {
        throw new RuntimeException();
    }

    public boolean isModifiedAfter(Date date) {
        throw new RuntimeException();
    }

    public boolean isModifiedInRange(Date start, Date end) {
        throw new RuntimeException();
    }

}