mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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72af87e9c0
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5050 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
555 lines
18 KiB
Java
555 lines
18 KiB
Java
/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.repo.search;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import org.alfresco.model.ContentModel;
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import org.alfresco.service.cmr.dictionary.DictionaryService;
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import org.alfresco.service.cmr.repository.ChildAssociationRef;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.NodeService;
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import org.alfresco.service.cmr.repository.StoreRef;
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import org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter;
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import org.alfresco.service.cmr.search.SearchParameters;
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import org.alfresco.service.cmr.search.SearchService;
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import org.alfresco.service.namespace.NamespacePrefixResolver;
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import org.alfresco.service.namespace.QName;
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import org.alfresco.service.namespace.QNamePattern;
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import org.alfresco.service.namespace.RegexQNamePattern;
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import org.alfresco.util.ISO9075;
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import org.jaxen.DefaultNavigator;
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import org.jaxen.JaxenException;
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import org.jaxen.NamedAccessNavigator;
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import org.jaxen.UnsupportedAxisException;
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import org.jaxen.XPath;
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/**
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* An implementation of the Jaxen xpath against the node service API
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*
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* This means any node service can do xpath style navigation. Given any context
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* node we can navigate between nodes using xpath.
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*
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* This allows simple path navigation and much more.
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*
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* @author Andy Hind
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*
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*/
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public class DocumentNavigator extends DefaultNavigator implements NamedAccessNavigator
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{
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private static QName JCR_ROOT = QName.createQName("http://www.jcp.org/jcr/1.0", "root");
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private static QName JCR_PRIMARY_TYPE = QName.createQName("http://www.jcp.org/jcr/1.0", "primaryType");
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private static QName JCR_MIXIN_TYPES = QName.createQName("http://www.jcp.org/jcr/1.0", "mixinTypes");
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private static final long serialVersionUID = 3618984485740165427L;
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private DictionaryService dictionaryService;
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private NodeService nodeService;
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private SearchService searchService;
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private NamespacePrefixResolver nspr;
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// Support classes to encapsulate stuff more akin to xml
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public class Property
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{
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public final QName qname;
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public final Serializable value;
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public final NodeRef parent;
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public Property(QName qname, Serializable value, NodeRef parent)
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{
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this.qname = qname;
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this.value = value;
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this.parent = parent;
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}
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}
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public class Namespace
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{
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public final String prefix;
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public final String uri;
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public Namespace(String prefix, String uri)
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{
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this.prefix = prefix;
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this.uri = uri;
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}
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}
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public class JCRRootNodeChildAssociationRef extends ChildAssociationRef
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{
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/**
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* Comment for <code>serialVersionUID</code>
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*/
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private static final long serialVersionUID = -3890194577752476675L;
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public JCRRootNodeChildAssociationRef(QName assocTypeQName, NodeRef parentRef, QName childQName, NodeRef childRef)
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{
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super(assocTypeQName, parentRef, childQName, childRef);
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}
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public JCRRootNodeChildAssociationRef(QName assocTypeQName, NodeRef parentRef, QName childQName, NodeRef childRef, boolean isPrimary, int nthSibling)
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{
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super(assocTypeQName, parentRef, childQName, childRef, isPrimary, nthSibling);
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}
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}
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private boolean followAllParentLinks;
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private boolean useJCRRootNode;
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/**
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* @param dictionaryService
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* used to resolve the <b>subtypeOf</b> function and other
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* type-related functions
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* @param nodeService
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* the <tt>NodeService</tt> against which to execute
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* @param searchService
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* the service that helps resolve functions such as <b>like</b>
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* and <b>contains</b>
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* @param nspr
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* resolves namespaces in the xpath
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* @param followAllParentLinks
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* true if the XPath should traverse all parent associations when
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* going up the hierarchy; false if the only the primary
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* parent-child association should be traversed
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*/
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public DocumentNavigator(DictionaryService dictionaryService, NodeService nodeService, SearchService searchService,
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NamespacePrefixResolver nspr, boolean followAllParentLinks, boolean useJCRRootNode)
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{
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super();
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this.dictionaryService = dictionaryService;
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this.nodeService = nodeService;
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this.searchService = searchService;
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this.nspr = nspr;
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this.followAllParentLinks = followAllParentLinks;
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this.useJCRRootNode = useJCRRootNode;
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}
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public NamespacePrefixResolver getNamespacePrefixResolver()
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{
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return nspr;
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}
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/**
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* Allow this to be set as it commonly changes from one search to the next
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*
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* @param followAllParentLinks
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* true
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*/
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public void setFollowAllParentLinks(boolean followAllParentLinks)
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{
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this.followAllParentLinks = followAllParentLinks;
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}
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public String getAttributeName(Object o)
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{
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// Get the local name
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String escapedLocalName = ISO9075.encode(((Property) o).qname.getLocalName());
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if(escapedLocalName == ((Property) o).qname.getLocalName())
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{
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return escapedLocalName;
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}
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return escapedLocalName;
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}
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public String getAttributeNamespaceUri(Object o)
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{
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return ((Property) o).qname.getNamespaceURI();
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}
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public String getAttributeQName(Object o)
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{
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QName qName = ((Property) o).qname;
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String escapedLocalName = ISO9075.encode(qName.getLocalName());
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if(escapedLocalName == qName.getLocalName())
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{
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return qName.toString();
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}
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else
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{
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return QName.createQName(qName.getNamespaceURI(), escapedLocalName).toString();
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}
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}
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public String getAttributeStringValue(Object o)
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{
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// Only the first property of multi-valued properties is displayed
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// A multivalue attribute makes no sense in the xml world
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return DefaultTypeConverter.INSTANCE.convert(String.class, ((Property) o).value);
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}
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public String getCommentStringValue(Object o)
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{
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// There is no attribute that is a comment
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throw new UnsupportedOperationException("Comment string values are unsupported");
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}
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public String getElementName(Object o)
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{
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QName qName = ((ChildAssociationRef) o).getQName();
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if(qName == null)
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{
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return "";
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}
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return ISO9075.encode(qName.getLocalName());
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}
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public String getElementNamespaceUri(Object o)
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{
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QName qName = ((ChildAssociationRef) o).getQName();
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if(qName == null)
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{
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return "";
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}
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return (qName.getNamespaceURI());
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}
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public String getElementQName(Object o)
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{
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QName qName = ((ChildAssociationRef) o).getQName();
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if(qName == null)
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{
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return "";
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}
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String escapedLocalName = ISO9075.encode(qName.getLocalName());
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if(escapedLocalName == qName.getLocalName())
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{
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return qName.toString();
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}
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else
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{
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return QName.createQName(qName.getNamespaceURI(), escapedLocalName).toString();
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}
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}
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public String getElementStringValue(Object o)
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{
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throw new UnsupportedOperationException("Element string values are unsupported");
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}
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public String getNamespacePrefix(Object o)
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{
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return ((Namespace) o).prefix;
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}
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public String getNamespaceStringValue(Object o)
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{
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return ((Namespace) o).uri;
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}
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public String getTextStringValue(Object o)
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{
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throw new UnsupportedOperationException("Text nodes are unsupported");
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}
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public boolean isAttribute(Object o)
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{
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return (o instanceof Property);
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}
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public boolean isComment(Object o)
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{
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return false;
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}
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public boolean isDocument(Object o)
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{
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if (!(o instanceof ChildAssociationRef))
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{
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return false;
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}
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ChildAssociationRef car = (ChildAssociationRef) o;
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return (car.getParentRef() == null) && (car.getQName() == null);
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}
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public boolean isElement(Object o)
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{
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return (o instanceof ChildAssociationRef);
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}
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public boolean isNamespace(Object o)
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{
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return (o instanceof Namespace);
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}
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public boolean isProcessingInstruction(Object o)
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{
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return false;
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}
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public boolean isText(Object o)
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{
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return false;
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}
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public XPath parseXPath(String o) throws JaxenException
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{
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return new NodeServiceXPath(o, this, null);
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}
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// Basic navigation support
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public Iterator getAttributeAxisIterator(Object contextNode, String localName, String namespacePrefix, String namespaceURI) throws UnsupportedAxisException
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{
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// decode the localname
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localName = ISO9075.decode(localName);
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NodeRef nodeRef = ((ChildAssociationRef) contextNode).getChildRef();
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QName qName = QName.createQName(namespaceURI, localName);
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Serializable value = nodeService.getProperty(nodeRef, qName);
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List<Property> properties = null;
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if (value != null)
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{
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if (value instanceof Collection)
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{
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Collection<Serializable> values = (Collection<Serializable>) value;
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properties = new ArrayList<Property>(values.size());
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for(Serializable collectionValue : values)
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{
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Property property = new Property(qName, collectionValue, nodeRef);
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properties.add(property);
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}
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}
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else
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{
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Property property = new Property(qName, value, nodeRef);
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properties = Collections.singletonList(property);
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}
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}
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else
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{
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properties = Collections.emptyList();
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}
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// done
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return properties.iterator();
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}
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public Iterator getAttributeAxisIterator(Object o) throws UnsupportedAxisException
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{
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ArrayList<Property> properties = new ArrayList<Property>();
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NodeRef nodeRef = ((ChildAssociationRef) o).getChildRef();
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Map<QName, Serializable> map = nodeService.getProperties(nodeRef);
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for (QName qName : map.keySet())
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{
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if(map.get(qName) instanceof Collection)
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{
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for(Serializable ob : (Collection<Serializable>) map.get(qName))
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{
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Property property = new Property(qName, ob, nodeRef);
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properties.add(property);
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}
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}
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else
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{
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Property property = new Property(qName, map.get(qName), nodeRef);
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properties.add(property);
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}
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}
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if(useJCRRootNode)
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{
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properties.add(new Property(JCR_PRIMARY_TYPE, nodeService.getType(nodeRef), nodeRef));
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for(QName mixin : nodeService.getAspects(nodeRef))
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{
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properties.add(new Property(JCR_MIXIN_TYPES, mixin, nodeRef));
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}
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}
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return properties.iterator();
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}
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public Iterator getChildAxisIterator(Object contextNode, String localName, String namespacePrefix, String namespaceURI) throws UnsupportedAxisException
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{
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// decode the localname
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localName = ISO9075.decode(localName);
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ChildAssociationRef assocRef = (ChildAssociationRef) contextNode;
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NodeRef childRef = assocRef.getChildRef();
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QName qName = QName.createQName(namespaceURI, localName);
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List<? extends ChildAssociationRef> list = null;
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// Add compatability for JCR 170 by including the root node.
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if(isDocument(contextNode) && useJCRRootNode)
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{
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list = new ArrayList<ChildAssociationRef>(1);
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list = Collections.singletonList(
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new JCRRootNodeChildAssociationRef(
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ContentModel.ASSOC_CHILDREN, childRef, JCR_ROOT, childRef, true, 0));
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}
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else
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{
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list = nodeService.getChildAssocs(childRef, RegexQNamePattern.MATCH_ALL, qName);
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}
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// done
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return list.iterator();
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}
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public Iterator getChildAxisIterator(Object o) throws UnsupportedAxisException
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{
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// Iterator of ChildAxisRef
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ChildAssociationRef assocRef = (ChildAssociationRef) o;
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NodeRef childRef = assocRef.getChildRef();
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List<ChildAssociationRef> list;
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// Add compatability for JCR 170 by including the root node.
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if(isDocument(o) && useJCRRootNode)
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{
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list = new ArrayList<ChildAssociationRef>(1);
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list.add(new JCRRootNodeChildAssociationRef(ContentModel.ASSOC_CHILDREN, childRef, JCR_ROOT, childRef, true, 0));
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}
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else
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{
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list = nodeService.getChildAssocs(childRef);
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}
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return list.iterator();
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}
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/** Used to prevent crazy ordering code in from repeatedly getting child association */
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private static final UnsupportedAxisException EXCEPTION_NOT_SUPPORTED = new UnsupportedAxisException("");
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/**
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* @see #EXCEPTION_NOT_SUPPORTED always thrown
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*/
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@Override
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public Iterator getFollowingSiblingAxisIterator(Object arg0) throws UnsupportedAxisException
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{
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throw EXCEPTION_NOT_SUPPORTED;
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}
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/**
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* @see #EXCEPTION_NOT_SUPPORTED always thrown
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*/
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@Override
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public Iterator getFollowingAxisIterator(Object arg0) throws UnsupportedAxisException
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{
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throw EXCEPTION_NOT_SUPPORTED;
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}
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/**
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* @see #EXCEPTION_NOT_SUPPORTED always thrown
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*/
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@Override
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public Iterator getPrecedingAxisIterator(Object arg0) throws UnsupportedAxisException
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{
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throw EXCEPTION_NOT_SUPPORTED;
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}
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/**
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* @see #EXCEPTION_NOT_SUPPORTED always thrown
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*/
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@Override
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public Iterator getPrecedingSiblingAxisIterator(Object arg0) throws UnsupportedAxisException
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{
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throw EXCEPTION_NOT_SUPPORTED;
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}
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public Iterator getNamespaceAxisIterator(Object o) throws UnsupportedAxisException
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{
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// Iterator of Namespace
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ArrayList<Namespace> namespaces = new ArrayList<Namespace>();
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for (String prefix : nspr.getPrefixes())
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{
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String uri = nspr.getNamespaceURI(prefix);
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Namespace ns = new Namespace(prefix, uri);
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namespaces.add(ns);
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}
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return namespaces.iterator();
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}
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public Iterator getParentAxisIterator(Object o) throws UnsupportedAxisException
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{
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ArrayList<ChildAssociationRef> parents = new ArrayList<ChildAssociationRef>(1);
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// Iterator of ??
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if (o instanceof ChildAssociationRef)
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{
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ChildAssociationRef contextRef = (ChildAssociationRef) o;
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if (contextRef.getParentRef() != null)
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{
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if (followAllParentLinks)
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{
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for (ChildAssociationRef car : nodeService.getParentAssocs(contextRef.getChildRef()))
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{
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parents.add(nodeService.getPrimaryParent(car.getParentRef()));
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}
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}
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else
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{
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parents.add(nodeService.getPrimaryParent(contextRef.getParentRef()));
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}
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}
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}
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if (o instanceof Property)
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{
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Property p = (Property) o;
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parents.add(nodeService.getPrimaryParent(p.parent));
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}
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return parents.iterator();
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}
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public Object getDocumentNode(Object o)
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{
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ChildAssociationRef assocRef = (ChildAssociationRef) o;
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StoreRef storeRef = assocRef.getChildRef().getStoreRef();
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return new ChildAssociationRef(null, null, null, nodeService.getRootNode(storeRef));
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}
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public Object getNode(NodeRef nodeRef)
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{
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return nodeService.getPrimaryParent(nodeRef);
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}
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public List<ChildAssociationRef> getNode(NodeRef nodeRef, QNamePattern qNamePattern)
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{
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return nodeService.getParentAssocs(nodeRef, RegexQNamePattern.MATCH_ALL, qNamePattern);
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}
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public Boolean like(NodeRef childRef, QName qname, String sqlLikePattern, boolean includeFTS)
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{
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return searchService.like(childRef, qname, sqlLikePattern, includeFTS);
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}
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public Boolean contains(NodeRef childRef, QName qname, String sqlLikePattern, SearchParameters.Operator defaultOperator)
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{
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return searchService.contains(childRef, qname, sqlLikePattern, defaultOperator);
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}
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public Boolean isSubtypeOf(NodeRef nodeRef, QName typeQName)
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{
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// get the type of the node
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QName nodeTypeQName = nodeService.getType(nodeRef);
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return dictionaryService.isSubClass(nodeTypeQName, typeQName);
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}
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}
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