ALF-9156 Start on the calendar entry canned query, with date filtering, based on the Blog one

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@28998 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

config/alfresco/calendar-services-context.xml

@@ -52,11 +52,20 @@
        <property name="methodSecurity" ref="CalendarService_security_listCalendarEntries"/>
    </bean>
 
+   <!-- The multiple site, Date filtering GetChildren Canned Query Factory -->
+   <bean name="calendarGetCalendarEntriesCannedQueryFactory" class="org.alfresco.repo.calendar.cannedqueries.GetCalendarEntriesCannedQueryFactory">
+       <property name="registry" ref="calendarCannedQueryRegistry"/>
+       <property name="tenantService" ref="tenantService"/>
+       <property name="nodeDAO" ref="nodeDAO"/>
+       <property name="qnameDAO" ref="qnameDAO"/>
+       <property name="cannedQueryDAO" ref="cannedQueryDAO"/>
+       <property name="methodSecurity" ref="CalendarService_security_listCalendarEntries"/>
+   </bean>
+
    <!-- Calendar Service base bean -->
 	<bean id="calendarService" class="org.alfresco.repo.calendar.CalendarServiceImpl">
         <property name="nodeService" ref="NodeService"/>
         <property name="siteService" ref="SiteService"/>
-        <property name="searchService" ref="SearchService" /> <!-- TODO Temp -->
         <property name="taggingService" ref="TaggingService"/>
         <property name="permissionService" ref="PermissionService"/>
         <property name="transactionService" ref="transactionService" />

source/java/org/alfresco/repo/calendar/CalendarServiceImpl.java

@@ -32,6 +32,8 @@ import org.alfresco.query.CannedQueryFactory;
 import org.alfresco.query.CannedQueryResults;
 import org.alfresco.query.PagingRequest;
 import org.alfresco.query.PagingResults;
+import org.alfresco.repo.calendar.cannedqueries.GetCalendarEntriesCannedQuery;
+import org.alfresco.repo.calendar.cannedqueries.GetCalendarEntriesCannedQueryFactory;
 import org.alfresco.repo.node.getchildren.GetChildrenCannedQuery;
 import org.alfresco.repo.node.getchildren.GetChildrenCannedQueryFactory;
 import org.alfresco.repo.security.authentication.AuthenticationUtil;
@@ -67,6 +69,7 @@ public class CalendarServiceImpl implements CalendarService
     private static final int MAX_QUERY_ENTRY_COUNT = 10000;
 
     private static final String CANNED_QUERY_GET_CHILDREN = "calendarGetChildrenCannedQueryFactory";
+    private static final String CANNED_QUERY_GET_ENTRIES = "calendarGetCalendarEntriesCannedQueryFactory";
     
     /**
      * The logger
@@ -75,11 +78,10 @@ public class CalendarServiceImpl implements CalendarService
     
     private NodeService nodeService;
     private SiteService siteService;
-    private SearchService searchService; // TODO Temp only
     private TaggingService taggingService;
     private PermissionService permissionService;
     private TransactionService transactionService;
-    private NamedObjectRegistry<CannedQueryFactory<NodeRef>> cannedQueryRegistry;
+    private NamedObjectRegistry<CannedQueryFactory<? extends Object>> cannedQueryRegistry;
     
     public void setNodeService(NodeService nodeService)
     {
@@ -91,14 +93,6 @@ public class CalendarServiceImpl implements CalendarService
         this.siteService = siteService;
     }
     
-    /**
-     * TODO Temp only
-     */
-    public void setSearchService(SearchService searchService)
-    {
-        this.searchService = searchService;
-    }
-    
     public void setTaggingService(TaggingService taggingService)
     {
         this.taggingService = taggingService;
@@ -117,7 +111,7 @@ public class CalendarServiceImpl implements CalendarService
     /**
      * Set the registry of {@link CannedQueryFactory canned queries}
      */
-    public void setCannedQueryRegistry(NamedObjectRegistry<CannedQueryFactory<NodeRef>> cannedQueryRegistry)
+    public void setCannedQueryRegistry(NamedObjectRegistry<CannedQueryFactory<? extends Object>> cannedQueryRegistry)
     {
         this.cannedQueryRegistry = cannedQueryRegistry;
     }
@@ -360,9 +354,6 @@ public class CalendarServiceImpl implements CalendarService
        nodeService.deleteNode(entry.getNodeRef());
     }
 
-    /**
-     * TODO Switch to delegating 
-     */
     @Override
     public PagingResults<CalendarEntry> listCalendarEntries(
           String siteShortName, PagingRequest paging) 
@@ -403,16 +394,34 @@ public class CalendarServiceImpl implements CalendarService
           return listCalendarEntries(siteShortNames[0], paging);
        }
 
-       // TODO Use search for now
-       return null;
+       // Use the date one with no dates
+       return listCalendarEntries(siteShortNames, null, null, paging);
     }
     
     @Override
     public PagingResults<CalendarEntry> listCalendarEntries(
           String[] siteShortNames, Date from, Date to, PagingRequest paging) 
     {
-       // TODO Use search for now
-       return null;
+       // Get the containers
+       List<NodeRef> containersL = new ArrayList<NodeRef>();
+       for(String siteShortName : siteShortNames)
+       {
+          NodeRef container = getSiteCalendarContainer(siteShortName, false);
+          if(container != null)
+          {
+             containersL.add(container);
+          }
+       }
+       NodeRef[] containers = containersL.toArray(new NodeRef[containersL.size()]);
+       
+       // Run the canned query
+       GetCalendarEntriesCannedQueryFactory cqFactory = (GetCalendarEntriesCannedQueryFactory)cannedQueryRegistry.getNamedObject(CANNED_QUERY_GET_ENTRIES);
+       GetCalendarEntriesCannedQuery cq = (GetCalendarEntriesCannedQuery)cqFactory.getCannedQuery(
+             containers, from, to, paging
+       );
+       
+       // Execute the canned query
+       return cq.execute();
     }
     
     /**

source/java/org/alfresco/repo/calendar/cannedqueries/CalendarEntity.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2005-2011 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.repo.calendar.cannedqueries;
+
+import org.alfresco.repo.domain.node.NodeEntity;
+import org.alfresco.service.cmr.calendar.CalendarEntry;
+import org.alfresco.service.cmr.repository.NodeRef;
+
+/**
+ * Calendar Entity - low level representation of parts of a 
+ *  {@link CalendarEntry} - used by GetCalendarEntries Canned Query
+ *
+ * @author Nick Burch
+ * @since 4.0
+ */
+public class CalendarEntity
+{
+    private Long id; // node id
+    
+    private NodeEntity node;
+    
+    private String name;
+    
+    private String fromDate;
+    private String toDate;
+    
+    // Supplemental query-related parameters
+    private Long parentNodeId;
+    private Long nameQNameId;
+    
+    /**
+     * Default constructor
+     */
+    public CalendarEntity()
+    {
+    }
+    
+    public CalendarEntity(Long parentNodeId, Long nameQNameId)
+    {
+        this.parentNodeId = parentNodeId;
+        this.nameQNameId = nameQNameId;
+    }
+    
+    public Long getId()
+    {
+        return id;
+    }
+    
+    public void setId(Long id)
+    {
+        this.id = id;
+    }
+    
+    // helper
+    public NodeRef getNodeRef()
+    {
+        return (node != null ? node.getNodeRef() : null);
+    }
+    
+    // helper (ISO 8061)
+    public String getCreatedDate()
+    {
+        return ((node != null && node.getAuditableProperties() != null) ? node.getAuditableProperties().getAuditCreated() : null);
+    }
+    
+    // helper
+    public String getCreator()
+    {
+        return ((node != null && node.getAuditableProperties() != null) ? node.getAuditableProperties().getAuditCreator() : null);
+    }
+    
+    public NodeEntity getNode()
+    {
+        return node;
+    }
+    
+    public void setNode(NodeEntity childNode)
+    {
+        this.node = childNode;
+    }
+    
+    public String getName()
+    {
+        return name;
+    }
+    
+    public void setName(String name)
+    {
+        this.name = name;
+    }
+    
+    // (ISO-8061)
+    public String getFromDate()
+    {
+        return fromDate;
+    }
+    
+    public void setFromDate(String fromISO8601)
+    {
+        this.fromDate = fromISO8601;
+    }
+    
+    // (ISO-8061)
+    public String getToDate()
+    {
+        return toDate;
+    }
+    
+    public void setToDate(String toISO8061)
+    {
+        this.toDate = toISO8061;
+    }
+    
+    // Supplemental query-related parameters
+    
+    public Long getParentNodeId()
+    {
+        return parentNodeId;
+    }
+    
+    public Long getNameQNameId()
+    {
+        return nameQNameId;
+    }
+}

source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQuery.java

@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2005-2011 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.repo.calendar.cannedqueries;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Date;
+import java.util.List;
+
+import org.alfresco.model.ContentModel;
+import org.alfresco.query.CannedQuery;
+import org.alfresco.query.CannedQueryParameters;
+import org.alfresco.query.CannedQuerySortDetails.SortOrder;
+import org.alfresco.repo.calendar.CalendarModel;
+import org.alfresco.repo.domain.query.CannedQueryDAO;
+import org.alfresco.repo.security.permissions.impl.acegi.AbstractCannedQueryPermissions;
+import org.alfresco.repo.security.permissions.impl.acegi.MethodSecurityBean;
+import org.alfresco.service.cmr.calendar.CalendarEntry;
+import org.alfresco.service.cmr.calendar.CalendarService;
+import org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter;
+import org.alfresco.service.namespace.QName;
+import org.alfresco.util.Pair;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * This class provides support for {@link CannedQuery canned queries} used by the
+ * {@link CalendarService}.
+ * 
+ * @author Nick Burch
+ * @since 4.0
+ */
+public class GetCalendarEntriesCannedQuery extends AbstractCannedQueryPermissions<CalendarEntry>
+{
+    private Log logger = LogFactory.getLog(getClass());
+    
+    private static final String QUERY_NAMESPACE = "alfresco.query.calendar";
+    private static final String QUERY_SELECT_GET_BLOGS = "select_GetCalendarEntriesCannedQuery";
+    
+    private final CannedQueryDAO cannedQueryDAO;
+    
+    public GetCalendarEntriesCannedQuery(
+            CannedQueryDAO cannedQueryDAO,
+            MethodSecurityBean<CalendarEntry> methodSecurity,
+            CannedQueryParameters params)
+    {
+        super(params, methodSecurity);
+        this.cannedQueryDAO = cannedQueryDAO;
+    }
+    
+    @Override
+    protected List<CalendarEntry> queryAndFilter(CannedQueryParameters parameters)
+    {
+        Long start = (logger.isDebugEnabled() ? System.currentTimeMillis() : null);
+        
+        Object paramBeanObj = parameters.getParameterBean();
+        if (paramBeanObj == null)
+            throw new NullPointerException("Null GetCalendarEntries query params");
+        
+        GetCalendarEntriesCannedQueryParams paramBean = (GetCalendarEntriesCannedQueryParams) paramBeanObj;
+        Date entriesFromDate = paramBean.getEntriesFromDate();
+        Date entriesToDate = paramBean.getEntriesToDate();
+        
+        // note: refer to SQL for specific DB filtering (eg.parent nodes etc)
+        List<CalendarEntity> results = cannedQueryDAO.executeQuery(QUERY_NAMESPACE, QUERY_SELECT_GET_BLOGS, paramBean, 0, Integer.MAX_VALUE);
+        
+        List<CalendarEntity> filtered = new ArrayList<CalendarEntity>(results.size());
+        for (CalendarEntity result : results)
+        {
+            boolean nextNodeIsAcceptable = true;
+            
+            Date fromDate = DefaultTypeConverter.INSTANCE.convert(Date.class, result.getFromDate()); 
+            Date toDate = DefaultTypeConverter.INSTANCE.convert(Date.class, result.getToDate());
+            if(toDate == null)
+            {
+               toDate = fromDate;
+            }
+            
+            // Only return entries in the right period
+            if(entriesFromDate != null)
+            {
+               // Needs to end on or after the Filter From date
+               if(toDate == null || toDate.before(entriesFromDate))
+               {
+                  nextNodeIsAcceptable = false;
+               }
+            }
+            if(entriesToDate != null)
+            {
+               // Needs to start on or after the Filter End date
+               if(fromDate == null || fromDate.after(entriesToDate))
+               {
+                  nextNodeIsAcceptable = false;
+               }
+            }
+            
+            if (nextNodeIsAcceptable)
+            {
+                filtered.add(result);
+            }
+        }
+        
+        List<Pair<? extends Object, SortOrder>> sortPairs = parameters.getSortDetails().getSortPairs();
+        
+        // For now, the BlogService only sorts by a single property.
+        if (sortPairs != null && !sortPairs.isEmpty())
+        {
+            List<Pair<Comparator<CalendarEntity>, SortOrder>> comparators =
+               new ArrayList<Pair<Comparator<CalendarEntity>,SortOrder>>();
+            for(Pair<? extends Object, SortOrder> sortPair : sortPairs)
+            {
+               QName sortProperty = (QName) sortPair.getFirst();
+               final PropertyBasedComparator comparator = new PropertyBasedComparator(sortProperty);
+               comparators.add(new Pair<Comparator<CalendarEntity>, SortOrder>(comparator, sortPair.getSecond()));
+            }
+            NestedComparator comparator = new NestedComparator(comparators);
+            
+            // Sort
+            Collections.sort(filtered, comparator); 
+        }
+        
+        List<CalendarEntry> calendarEntries = new ArrayList<CalendarEntry>(filtered.size());
+        for (CalendarEntity result : filtered)
+        {
+            calendarEntries.add(new CalendarEntryImpl(result));
+        }
+        
+        if (start != null)
+        {
+            logger.debug("Base query: "+calendarEntries.size()+" in "+(System.currentTimeMillis()-start)+" msecs");
+        }
+        
+        return calendarEntries;
+    }
+    
+    @Override
+    protected boolean isApplyPostQuerySorting()
+    {
+        // No post-query sorting. It's done within the queryAndFilter() method above.
+        return false;
+    }
+    
+    private class CalendarEntryImpl extends org.alfresco.repo.calendar.CalendarEntryImpl
+    {
+       private CalendarEntryImpl(CalendarEntity entity)
+       {
+          super(entity.getNodeRef(), entity.getName());
+       }
+    }
+    
+    /**
+     * Utility class to sort {@link CalendarEntry}s on the basis of a Comparable property.
+     * Comparisons of two null properties are considered 'equal' by this comparator.
+     * Comparisons involving one null and one non-null property will return the null property as
+     * being 'before' the non-null property.
+     * 
+     * Note that it is the responsibility of the calling code to ensure that the specified
+     * property values actually implement Comparable themselves.
+     */
+    protected static class PropertyBasedComparator implements Comparator<CalendarEntity>
+    {
+        private QName comparableProperty;
+        
+        public PropertyBasedComparator(QName comparableProperty)
+        {
+            this.comparableProperty = comparableProperty;
+        }
+        
+        @SuppressWarnings("unchecked")
+        @Override
+        public int compare(CalendarEntity nr1, CalendarEntity nr2)
+        {
+            Comparable prop1 = null;
+            Comparable prop2 = null;
+            if (comparableProperty.equals(CalendarModel.PROP_FROM_DATE))
+            {
+                prop1 = nr1.getFromDate();
+                prop2 = nr2.getFromDate();
+            }
+            else if (comparableProperty.equals(CalendarModel.PROP_TO_DATE))
+            {
+                prop1 = nr1.getToDate();
+                prop2 = nr2.getToDate();
+            }
+            else if (comparableProperty.equals(ContentModel.PROP_CREATED))
+            {
+                prop1 = nr1.getCreatedDate();
+                prop2 = nr2.getCreatedDate();
+            }
+            else
+            {
+                throw new IllegalArgumentException("Unsupported calendar sort property: "+comparableProperty);
+            }
+            
+            if (prop1 == null && prop2 == null)
+            {
+                return 0;
+            }
+            else if (prop1 == null && prop2 != null)
+            {
+                return -1;
+            }
+            else if (prop1 != null && prop2 == null)
+            {
+                return 1;
+            }
+            else
+            {
+                return prop1.compareTo(prop2);
+            }
+        }
+    }
+    
+    protected static class NestedComparator implements Comparator<CalendarEntity>
+    {
+        private List<Pair<Comparator<CalendarEntity>, SortOrder>> comparators;
+        
+        private NestedComparator(List<Pair<Comparator<CalendarEntity>, SortOrder>> comparators)
+        {
+           this.comparators = comparators;
+        }
+
+        @Override
+        public int compare(CalendarEntity entry1, CalendarEntity entry2) {
+           for(Pair<Comparator<CalendarEntity>, SortOrder> pc : comparators)
+           {
+              int result = pc.getFirst().compare(entry1, entry2);
+              if(result != 0)
+              {
+                 // Sorts differ, return
+                 if(pc.getSecond() == SortOrder.ASCENDING)
+                 {
+                    return result;
+                 }
+                 else
+                 {
+                    return 0 - result;
+                 }
+              }
+              else
+              {
+                 // Sorts are the same, try the next along
+              }
+           }
+           // No difference on any
+           return 0;
+        }
+    }
+}

source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQueryFactory.java

@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2005-2011 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.repo.calendar.cannedqueries;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.alfresco.model.ContentModel;
+import org.alfresco.query.AbstractCannedQueryFactory;
+import org.alfresco.query.CannedQuery;
+import org.alfresco.query.CannedQueryFactory;
+import org.alfresco.query.CannedQueryPageDetails;
+import org.alfresco.query.CannedQueryParameters;
+import org.alfresco.query.CannedQuerySortDetails;
+import org.alfresco.query.PagingRequest;
+import org.alfresco.query.CannedQuerySortDetails.SortOrder;
+import org.alfresco.repo.calendar.CalendarModel;
+import org.alfresco.repo.domain.node.NodeDAO;
+import org.alfresco.repo.domain.qname.QNameDAO;
+import org.alfresco.repo.domain.query.CannedQueryDAO;
+import org.alfresco.repo.security.permissions.impl.acegi.MethodSecurityBean;
+import org.alfresco.repo.tenant.TenantService;
+import org.alfresco.service.cmr.calendar.CalendarEntry;
+import org.alfresco.service.cmr.calendar.CalendarService;
+import org.alfresco.service.cmr.repository.InvalidNodeRefException;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.namespace.QName;
+import org.alfresco.util.Pair;
+import org.alfresco.util.ParameterCheck;
+import org.alfresco.util.PropertyCheck;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * A {@link CannedQueryFactory} for various queries relating to {@link CalendarEntry calendar entries}.
+ * 
+ * @author Nick Burch
+ * @since 4.0
+ * 
+ * @see CalendarService#listCalendarEntries(String, PagingRequest)
+ * @see CalendarService#listCalendarEntries(String[], PagingRequest)
+ * @see CalendarService#listCalendarEntries(String[], Date, Date, PagingRequest)
+ */
+public class GetCalendarEntriesCannedQueryFactory extends AbstractCannedQueryFactory<CalendarEntry>
+{
+    private Log logger = LogFactory.getLog(getClass());
+
+    protected MethodSecurityBean<CalendarEntry> methodSecurity;
+    protected NodeDAO nodeDAO;
+    protected QNameDAO qnameDAO;
+    protected CannedQueryDAO cannedQueryDAO;
+    protected TenantService tenantService;
+
+    public void setNodeDAO(NodeDAO nodeDAO)
+    {
+       this.nodeDAO = nodeDAO;
+    }
+
+    public void setQnameDAO(QNameDAO qnameDAO)
+    {
+       this.qnameDAO = qnameDAO;
+    }
+
+    public void setCannedQueryDAO(CannedQueryDAO cannedQueryDAO)
+    {
+       this.cannedQueryDAO = cannedQueryDAO;
+    }
+
+    public void setTenantService(TenantService tenantService)
+    {
+       this.tenantService = tenantService;
+    }
+
+    public void setMethodSecurity(MethodSecurityBean<CalendarEntry> methodSecurity)
+    {
+       this.methodSecurity = methodSecurity;
+    }
+   
+    @Override
+    public void afterPropertiesSet() throws Exception
+    {
+        super.afterPropertiesSet();
+        
+        PropertyCheck.mandatory(this, "methodSecurity", methodSecurity);
+        PropertyCheck.mandatory(this, "nodeDAO", nodeDAO);
+        PropertyCheck.mandatory(this, "qnameDAO", qnameDAO);
+        PropertyCheck.mandatory(this, "cannedQueryDAO", cannedQueryDAO);
+        PropertyCheck.mandatory(this, "tenantService", tenantService);
+    }
+    
+    @Override
+    public CannedQuery<CalendarEntry> getCannedQuery(CannedQueryParameters parameters)
+    {
+        final GetCalendarEntriesCannedQuery cq = new GetCalendarEntriesCannedQuery(cannedQueryDAO, methodSecurity, parameters);
+        
+        return (CannedQuery<CalendarEntry>) cq;
+    }
+    
+    public CannedQuery<CalendarEntry> getCannedQuery(NodeRef[] containerNodes, Date fromDate, Date toDate, PagingRequest pagingReq)
+    {
+        ParameterCheck.mandatory("containerNodes", containerNodes);
+        ParameterCheck.mandatory("pagingReq", pagingReq);
+        
+        int requestTotalCountMax = pagingReq.getRequestTotalCountMax();
+        
+        Long[] containerIds = new Long[containerNodes.length];
+        for(int i=0; i<containerIds.length; i++)
+        {
+           containerIds[i] = getNodeId(containerNodes[i]);
+        }
+        
+        //FIXME Need tenant service like for GetChildren?
+        GetCalendarEntriesCannedQueryParams paramBean = new GetCalendarEntriesCannedQueryParams(
+              containerIds, getQNameId(ContentModel.PROP_NAME), fromDate, toDate
+        );
+        
+        CannedQueryPageDetails cqpd = createCQPageDetails(pagingReq);
+        CannedQuerySortDetails cqsd = createCQSortDetails();
+        
+        // create query params holder
+        CannedQueryParameters params = new CannedQueryParameters(paramBean, cqpd, cqsd, requestTotalCountMax, pagingReq.getQueryExecutionId());
+        
+        // return canned query instance
+        return getCannedQuery(params);
+    }
+    
+    protected CannedQuerySortDetails createCQSortDetails()
+    {
+        List<Pair<? extends Object,SortOrder>> sort = new ArrayList<Pair<? extends Object, SortOrder>>();
+        sort.add(new Pair<QName, SortOrder>(CalendarModel.PROP_FROM_DATE, SortOrder.DESCENDING)); 
+        sort.add(new Pair<QName, SortOrder>(CalendarModel.PROP_TO_DATE, SortOrder.DESCENDING));
+        
+        return new CannedQuerySortDetails(sort);
+    }
+    
+    protected CannedQueryPageDetails createCQPageDetails(PagingRequest pagingReq)
+    {
+        int skipCount = pagingReq.getSkipCount();
+        if (skipCount == -1)
+        {
+            skipCount = CannedQueryPageDetails.DEFAULT_SKIP_RESULTS;
+        }
+        
+        int maxItems = pagingReq.getMaxItems();
+        if (maxItems == -1)
+        {
+            maxItems  = CannedQueryPageDetails.DEFAULT_PAGE_SIZE;
+        }
+        
+        // page details
+        CannedQueryPageDetails cqpd = new CannedQueryPageDetails(skipCount, maxItems);
+        return cqpd;
+    }
+    
+    protected Long getQNameId(QName qname)
+    {
+        Pair<Long, QName> qnamePair = qnameDAO.getQName(qname);
+        if (qnamePair == null)
+        {
+            if (logger.isTraceEnabled())
+            {
+                logger.trace("QName does not exist: " + qname); // possible ... eg. blg:blogPost if a blog has never been posted externally
+            }
+            return null;
+        }
+        return qnamePair.getFirst();
+    }
+    
+    protected Long getNodeId(NodeRef nodeRef)
+    {
+        Pair<Long, NodeRef> nodePair = nodeDAO.getNodePair(tenantService.getName(nodeRef));
+        if (nodePair == null)
+        {
+            throw new InvalidNodeRefException("Node ref does not exist: " + nodeRef, nodeRef);
+        }
+        return nodePair.getFirst();
+    }
+}

source/java/org/alfresco/repo/calendar/cannedqueries/GetCalendarEntriesCannedQueryParams.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2005-2011 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.repo.calendar.cannedqueries;
+
+import java.util.Date;
+
+/**
+ * Parameter objects for {@link GetCalendarEntriesCannedQuery}.
+ * 
+ * @author Nick Burch
+ * @since 4.0
+ */
+public class GetCalendarEntriesCannedQueryParams extends CalendarEntity
+{
+    private final Long[] siteContainerNodeIds;
+    private final Date entriesFromDate;
+    private final Date entriesToDate;
+    
+    public GetCalendarEntriesCannedQueryParams(Long[] siteContainerNodeIds,
+                                         Long nameQNameId,
+                                         Date entriesFromDate,
+                                         Date entriesToDate)
+    {
+        super(null, nameQNameId);
+        
+        this.siteContainerNodeIds = siteContainerNodeIds;
+        this.entriesFromDate = entriesFromDate;
+        this.entriesToDate = entriesToDate;
+    }
+    
+    public Long[] getSiteContainerNodeIds()
+    {
+        return siteContainerNodeIds;
+    }
+    
+    public Date getEntriesFromDate()
+    {
+        return entriesFromDate;
+    }
+
+    public Date getEntriesToDate()
+    {
+        return entriesToDate;
+    }
+}