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Rating Service. Now limited to one rating scheme per user per node.

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Without an explicit requirement for multiple rating schemes being applied to a node by a user and in order to simplify
the code and ease maintenance, the RatingService now only supports one rating scheme per node per user.
A rating can be applied, removed and a new rating in another scheme applied. But if the first is not removed, an exception will be thrown by the service.

This change was a simple edit in the model with changes to the service implementation and test code.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@21585 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Neil McErlean
2010-08-04 07:44:07 +00:00
parent f2c0221855
commit 87a95e7e8d
7 changed files with 150 additions and 604 deletions
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294
source/java/org/alfresco/repo/rating/RatingNodeProperties.java
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@@ -1,294 +0,0 @@
/*
* 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.repo.rating;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.alfresco.model.ContentModel;
import org.alfresco.service.cmr.rating.RatingServiceException;
import org.alfresco.service.namespace.QName;
/**
* The <code>cm:rating</code> content type defines the properties which are used in
* managing user-applied ratings. See <code>contentModel.xml</code> for details.
* <p/>
* Briefly, these properties are multi-valued where a 'slice' through the property
* set constitutes an individual user-applied rating. So if we were to take the value
* at index <em>n</em> of each multi-valued property, that would represent the
* score, appliedAt and scheme for one rating.
* <p/>
* This class simplifies and centralises the handling of these property sets.
*
* @author Neil McErlean
* @since 3.4
*/
public class RatingNodeProperties
{
// These lists are declared as the concrete type 'ArrayList' as they must implement Serializable
private final ArrayList<String> schemes;
private final ArrayList<Float> scores;
private final ArrayList<Date> dates;
public RatingNodeProperties(List<String> schemes, List<Float> scores, List<Date> dates)
{
// No null lists.
if (schemes == null) schemes = new ArrayList<String>();
if (scores == null) scores = new ArrayList<Float>();
if (dates == null) dates = new ArrayList<Date>();
// All lists must be the same length.
if (scores.size() != schemes.size() || dates.size() != schemes.size())
{
throw new RatingServiceException("Rating node properties have unequal list lengths: "
+ schemes.size() + " " + scores.size() + " " + dates.size());
}
// Copy all these data to ensure no leakage of this class' state into the original properties.
this.schemes = new ArrayList<String>(schemes.size());
for (String s : schemes)
this.schemes.add(s);
this.scores = new ArrayList<Float>(scores.size());
for (Float i : scores)
this.scores.add(i);
this.dates = new ArrayList<Date>(dates.size());
// We can't copy Dates straight over as Date objects are mutable, so clone.
for (Date d : dates)
this.dates.add((Date)d.clone());
}
/**
* This factory method creates a new {@link RatingNodeProperties} from the specified
* properties map.
* @param props
* @return
*/
@SuppressWarnings("unchecked")
public static RatingNodeProperties createFrom(Map<QName, Serializable> props)
{
List<String> schemes = (List<String>) props.get(ContentModel.PROP_RATING_SCHEME);
List<Float> scores = (List<Float>)props.get(ContentModel.PROP_RATING_SCORE);
List<Date> dates = (List<Date>) props.get(ContentModel.PROP_RATED_AT);
return new RatingNodeProperties(schemes, scores, dates);
}
/**
* This method returns the number of ratings currently held by the multivalued properties.
* @return the number of ratings.
*/
public int size()
{
return this.schemes.size();
}
/**
* This method gets the {@link Rating} for the specified index.
* @param index
* @return
*/
public RatingStruct getRatingAt(int index)
{
String scheme = this.schemes.get(index);
float score = this.scores.get(index);
Date d = this.dates.get(index);
return new RatingStruct(scheme, score, d);
}
/**
* This method appends a new rating in the specified schemeName. The ratedAt date
* will be set to 'now'.
*
* @param schemeName the scheme name.
* @param score the score.
*/
public void appendRating(String schemeName, float score)
{
this.schemes.add(schemeName);
this.scores.add(score);
this.dates.add(new Date());
}
/**
* This method sets the rating at the specified index.
* Note that to persist these changes, {@link RatingNodeProperties#toNodeProperties()}
* can be called to retrieve a property map which should then be saved via the
* {@link NodeService} in the usual way.
* <p/>
* The ratedAt property will be automatically set to 'now'.
* @param index the index at which the change is to be made.
* @param scheme the new rating scheme name.
* @param score the new rating score.
*/
public void setRatingAt(int index, String scheme, float score)
{
this.schemes.set(index, scheme);
this.scores.set(index, score);
this.dates.set(index, new Date());
}
/**
* This method removes the rating at the specified index.
* @param index
* @return the removed rating data.
*/
public RatingStruct removeRatingAt(int index)
{
String removedScheme = this.schemes.remove(index);
float removedScore = this.scores.remove(index);
Date removedDate = this.dates.remove(index);
return new RatingStruct(removedScheme, removedScore, removedDate);
}
/**
* This method returns all ratings as a List of {@link RatingStruct} objects.
* @return
*/
public List<RatingStruct> getAllRatings()
{
List<RatingStruct> result = new ArrayList<RatingStruct>(schemes.size());
for (int i = 0; i < schemes.size(); i++)
{
result.add(new RatingStruct(schemes.get(i), scores.get(i), dates.get(i)));
}
return result;
}
/**
* This method gets the rating which has the specified schemeName. There should only
* be one such rating.
* @param schemeName
* @return the requested {@link RatingStruct} if there is one, else <code>null</code>.
*/
public RatingStruct getRating(String schemeName)
{
for (int i = 0; i < schemes.size(); i ++)
{
if (schemes.get(i).equals(schemeName))
{
return new RatingStruct(schemes.get(i), scores.get(i), dates.get(i));
}
}
return null;
}
/**
* This method returns the index of the rating with the specified scheme name, if there
* is such a rating.
* @param schemeName
* @return the index of the specified rating if there is one, else -1.
*/
public int getIndexOfRating(String schemeName)
{
for (int i = 0; i < schemes.size(); i ++)
{
if (schemes.get(i).equals(schemeName))
{
return i;
}
}
return -1;
}
/**
* This method converts this {@link RatingNodeProperties} object into a Map of
* properties consistent with the Alfresco ratings content model. See contentModel.xml.
* These can then be set in the database via the {@link NodeService} in the usual way.
* @return
*/
public Map<QName, Serializable> toNodeProperties()
{
Map<QName, Serializable> results = new HashMap<QName, Serializable>();
results.put(ContentModel.PROP_RATING_SCHEME, this.schemes);
results.put(ContentModel.PROP_RATING_SCORE, this.scores);
results.put(ContentModel.PROP_RATED_AT, this.dates);
return results;
}
/**
* A simple struct class to help in handling the related properties within a cm:rating.
* @author Neil Mc Erlean.
*
*/
public class RatingStruct
{
private String scheme;
private float score;
private Date date;
public RatingStruct(String scheme, float score, Date d)
{
RatingStruct.this.scheme = scheme;
RatingStruct.this.score = score;
RatingStruct.this.date = d;
}
public String getScheme()
{
return scheme;
}
public float getScore()
{
return score;
}
public Date getDate()
{
return date;
}
@Override
public boolean equals(Object thatObj)
{
if (thatObj == null || thatObj.getClass().equals(RatingStruct.this.getClass()) == false)
{
return false;
}
RatingStruct that = (RatingStruct)thatObj;
return RatingStruct.this.scheme.equals(that.scheme) &&
RatingStruct.this.score == that.score &&
RatingStruct.this.date.equals(that.date);
}
@Override
public int hashCode()
{
return scheme.hashCode() + (int)(7 * score) + 11 * date.hashCode();
}
@Override
public String toString()
{
StringBuilder msg = new StringBuilder();
msg.append(RatingStruct.this.getClass().getSimpleName())
.append(" '").append(scheme).append("' ")
.append(score).append(" ").append(date);
return msg.toString();
}
}
}

189
source/java/org/alfresco/repo/rating/RatingNodePropertiesTest.java
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@@ -1,189 +0,0 @@
/*
* 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.repo.rating;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.rating.RatingNodeProperties.RatingStruct;
import org.alfresco.service.namespace.QName;
import org.junit.Before;
import org.junit.Test;
/**
* Unit Test class for {@link RatingNodeProperties}.
*
* @author Neil Mc Erlean
* @since 3.4
*/
public class RatingNodePropertiesTest
{
private static final String LIKE = "like";
private static final String FIVESTAR = "fivestar";
// These are declared as ArrayLists in order to be Serializable.
private ArrayList<String> testSchemes;
private ArrayList<Float> testScores;
private ArrayList<Date> testDates;
private RatingNodeProperties testProps;
@Before public void initTestData()
{
testSchemes = new ArrayList<String>();
testScores = new ArrayList<Float>();
testDates = new ArrayList<Date>();
// These correspond to two ratings:
// '1' in the 'like' scheme at 'now'.
// '5' in the 'fivestar' scheme at 'now'.
testSchemes.add(LIKE);
testSchemes.add(FIVESTAR);
testScores.add(1.0f);
testScores.add(5.0f);
testDates.add(new Date());
testDates.add(new Date());
Map<QName, Serializable> alfrescoStyleProps = new HashMap<QName, Serializable>();
alfrescoStyleProps.put(ContentModel.PROP_RATING_SCHEME, testSchemes);
alfrescoStyleProps.put(ContentModel.PROP_RATING_SCORE, testScores);
alfrescoStyleProps.put(ContentModel.PROP_RATED_AT, testDates);
testProps = RatingNodeProperties.createFrom(alfrescoStyleProps);
}
/**
* This test method checks that constructing a RatingNodeProperties with null-valued
* property lists works.
*/
@Test public void noNullPropertyLists() throws Exception
{
List<String> schemes = null;
List<Float> scores = null;
List<Date> dates = null;
RatingNodeProperties nullProps = new RatingNodeProperties(schemes, scores, dates);
assertEquals(0, nullProps.size());
}
@Test public void constructAndAccessRatings() throws Exception
{
assertEquals(2, testProps.size());
assertEquals(2, testProps.getAllRatings().size());
assertEquals(0, testProps.getIndexOfRating(LIKE));
assertEquals(-1, testProps.getIndexOfRating("noSuchScheme"));
final RatingStruct firstRating = testProps.getRatingAt(0);
assertEquals(LIKE, firstRating.getScheme());
assertEquals(1.0f, firstRating.getScore(), 0.1f);
final Date recoveredLikeDate = firstRating.getDate();
assertNotNull(recoveredLikeDate);
final RatingStruct secondRating = testProps.getRatingAt(1);
assertEquals(FIVESTAR, secondRating.getScheme());
assertEquals(5, secondRating.getScore(), 0.1f);
final Date recoveredSecondDate = secondRating.getDate();
assertNotNull(recoveredSecondDate);
RatingStruct l = testProps.getRating(LIKE);
assertNotNull(l);
assertEquals(LIKE, l.getScheme());
assertEquals(1, l.getScore(), 0.1f);
assertEquals(recoveredLikeDate, l.getDate());
}
@Test public void appendRating()
{
// Check all is right before we start
assertEquals(2, testProps.size());
testProps.appendRating("appended", 10);
assertEquals(3, testProps.size());
assertNotNull(testProps.getRating(LIKE));
assertNotNull(testProps.getRating(FIVESTAR));
assertNotNull(testProps.getRating("appended"));
}
@Test public void removeRating()
{
// Check all is right before we start
assertEquals(2, testProps.size());
// Remove the first rating - should be 'like'
testProps.removeRatingAt(0);
assertEquals(1, testProps.size());
// Now 'like' should be gone, but 'fivestar' should still be there.
assertNull(testProps.getRating(LIKE));
assertNotNull(testProps.getRating(FIVESTAR));
}
@Test public void replaceRating()
{
// Check all is right before we start
assertEquals(2, testProps.size());
// Replace the first rating - should be 'like'
// There's no such rating scheme as 'foo' but for this unit test it doesn't matter.
testProps.setRatingAt(0, "foo", 42);
assertEquals(2, testProps.size());
// Now 'like' should be replaced by 'foo'.
assertNull(testProps.getRating(LIKE));
assertNotNull(testProps.getRating(FIVESTAR));
final RatingStruct fooRating = testProps.getRating("foo");
assertNotNull(fooRating);
assertEquals(42, fooRating.getScore(), 0.1f);
}
@SuppressWarnings("unchecked")
@Test public void extractAlfrescoNodeProperties()
{
Map<QName, Serializable> alfProps = this.testProps.toNodeProperties();
assertNotNull(alfProps);
final int numberOfProperties = 3;
assertEquals(numberOfProperties, alfProps.size());
final List<String> ratingSchemes = (List<String>)alfProps.get(ContentModel.PROP_RATING_SCHEME);
final List<Float> ratingScores = (List<Float>)alfProps.get(ContentModel.PROP_RATING_SCORE);
final List<Date> ratingDates = (List<Date>)alfProps.get(ContentModel.PROP_RATED_AT);
final int numberOfRatings = 2;
assertEquals(numberOfRatings, ratingSchemes.size());
assertEquals(numberOfRatings, ratingScores.size());
assertEquals(numberOfRatings, ratingDates.size());
assertEquals(Arrays.asList(new String[]{LIKE, FIVESTAR}), ratingSchemes);
assertEquals(Arrays.asList(new Float[]{1.0f, 5.0f}), ratingScores);
// No Date checks
}
}

154
source/java/org/alfresco/repo/rating/RatingServiceImpl.java
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@@ -20,15 +20,12 @@
package org.alfresco.repo.rating;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.rating.RatingNodeProperties.RatingStruct;
import org.alfresco.repo.security.authentication.AuthenticationUtil;
import org.alfresco.service.cmr.rating.Rating;
import org.alfresco.service.cmr.rating.RatingScheme;
@@ -148,17 +145,16 @@ public class RatingServiceImpl implements RatingService
{
// There are no previous ratings from this user, so we create a new cm:rating child node.
// These are multivalued properties.
Map<QName, Serializable> ratingProps = new HashMap<QName, Serializable>();
ratingProps.put(ContentModel.PROP_RATING_SCORE, toSerializableList(new Float[]{rating}));
ratingProps.put(ContentModel.PROP_RATED_AT, toSerializableList(new Date[]{new Date()}));
ratingProps.put(ContentModel.PROP_RATING_SCHEME, toSerializableList(new String[]{ratingSchemeName}));
ratingProps.put(ContentModel.PROP_RATING_SCORE, rating);
ratingProps.put(ContentModel.PROP_RATED_AT, new Date());
ratingProps.put(ContentModel.PROP_RATING_SCHEME, ratingSchemeName);
nodeService.createNode(targetNode, ContentModel.ASSOC_RATINGS, assocQName, ContentModel.TYPE_RATING, ratingProps);
}
else
{
// There are previous ratings by this user. Things are a little more complex.
// There are previous ratings by this user.
if (myRatingChildren.size() > 1 && log.isDebugEnabled())
{
log.debug("");
@@ -166,27 +162,33 @@ public class RatingServiceImpl implements RatingService
NodeRef myPreviousRatingsNode = myRatingChildren.get(0).getChildRef();
Map<QName, Serializable> existingProps = nodeService.getProperties(myPreviousRatingsNode);
RatingNodeProperties ratingProps = RatingNodeProperties.createFrom(existingProps);
String existingRatingScheme = (String)existingProps.get(ContentModel.PROP_RATING_SCHEME);
// If the schemes list already contains an entry matching the rating we're setting
// we need to delete it and then delete the score and date at the corresponding indexes.
int indexOfExistingRating = ratingProps.getIndexOfRating(ratingSchemeName);
if (indexOfExistingRating != -1)
// If it's a re-rating in the existing scheme, replace.
if (ratingScheme.getName().equals(existingRatingScheme))
{
ratingProps.removeRatingAt(indexOfExistingRating);
Map<QName, Serializable> ratingProps = new HashMap<QName, Serializable>();
ratingProps.put(ContentModel.PROP_RATING_SCHEME, ratingSchemeName);
ratingProps.put(ContentModel.PROP_RATING_SCORE, rating);
ratingProps.put(ContentModel.PROP_RATED_AT, new Date());
nodeService.setProperties(myPreviousRatingsNode, ratingProps);
}
// But if it's a new rating in a different scheme, we don't support this scenario.
else
{
StringBuilder msg = new StringBuilder();
msg.append("Cannot apply rating ")
.append(rating).append(" [")
.append(ratingSchemeName).append("] to node ")
.append(targetNode).append(". Already rated in ")
.append(existingRatingScheme);
throw new RatingServiceException(msg.toString());
}
ratingProps.appendRating(ratingSchemeName, rating);
nodeService.setProperties(myPreviousRatingsNode, ratingProps.toNodeProperties());
}
}
private Serializable toSerializableList(Object[] array)
{
return (Serializable)Arrays.asList(array);
}
/*
* (non-Javadoc)
* @see org.alfresco.service.cmr.rating.RatingService#getRatingByCurrentUser(org.alfresco.service.cmr.repository.NodeRef, java.lang.String)
@@ -207,27 +209,26 @@ public class RatingServiceImpl implements RatingService
return null;
}
// Take the last node pertaining to the current user.
ChildAssociationRef lastChild = ratingChildren.get(ratingChildren.size() - 1);
Map<QName, Serializable> properties = nodeService.getProperties(lastChild.getChildRef());
// Take the node pertaining to the current user.
ChildAssociationRef ratingNodeAssoc = ratingChildren.get(0);
Map<QName, Serializable> properties = nodeService.getProperties(ratingNodeAssoc.getChildRef());
// Find the index of the rating scheme we're interested in.
RatingNodeProperties ratingProps = RatingNodeProperties.createFrom(properties);
int index = ratingProps.getIndexOfRating(ratingSchemeName);
if (index == -1)
String existingRatingScheme = (String)properties.get(ContentModel.PROP_RATING_SCHEME);
if (existingRatingScheme.equals(ratingSchemeName) == false)
{
// There is no rating in this scheme by the specified user.
return null;
}
else
{
// There is a rating and the associated data are at the index'th place in each multivalued property.
RatingStruct ratingStruct = ratingProps.getRatingAt(index);
Float existingRatingScore = (Float)properties.get(ContentModel.PROP_RATING_SCORE);
Date existingRatingDate = (Date)properties.get(ContentModel.PROP_RATED_AT);
Rating result = new Rating(getRatingScheme(ratingStruct.getScheme()),
ratingStruct.getScore(),
Rating result = new Rating(getRatingScheme(existingRatingScheme),
existingRatingScore,
user,
ratingStruct.getDate());
existingRatingDate);
return result;
}
}
@@ -243,39 +244,29 @@ public class RatingServiceImpl implements RatingService
return removeRating(targetNode, ratingScheme, currentUser);
}
private Rating removeRating(NodeRef targetNode, String ratingSchemeName, String user)
private Rating removeRating(NodeRef targetNode, String ratingSchemeName, final String user)
{
List<ChildAssociationRef> ratingChildren = getRatingNodeChildren(targetNode, user);
if (ratingChildren.isEmpty())
{
// There are no ratings by any user.
return null;
}
// Take the last node pertaining to the specified user.
ChildAssociationRef lastChild = ratingChildren.get(ratingChildren.size() - 1);
ChildAssociationRef lastChild = ratingChildren.get(0);
Map<QName, Serializable> properties = nodeService.getProperties(lastChild.getChildRef());
// Find the index of the rating scheme we're interested in.
RatingNodeProperties ratingProps = RatingNodeProperties.createFrom(properties);
int index = ratingProps.getIndexOfRating(ratingSchemeName);
if (index == -1)
Rating result = null;
// If the rating is for the specified scheme delete it.
// Get the scheme name and check it.
if (ratingSchemeName.equals(properties.get(ContentModel.PROP_RATING_SCHEME)))
{
// There is no rating in this scheme by the specified user.
return null;
}
else
{
// There is a rating and the associated data are at the index'th place in each property.
RatingStruct removed = ratingProps.removeRatingAt(index);
// Now apply the properties with one deleted.
Map<QName, Serializable> props = ratingProps.toNodeProperties();
nodeService.setProperties(lastChild.getChildRef(), props);
Float score = (Float) properties.get(ContentModel.PROP_RATING_SCORE);
Date date = (Date)properties.get(ContentModel.PROP_RATED_AT);
return new Rating(this.getRatingScheme(removed.getScheme()),
removed.getScore(), user, removed.getDate());
nodeService.deleteNode(lastChild.getChildRef());
result = new Rating(getRatingScheme(ratingSchemeName), score, user, date);
}
return result;
}
/*
@@ -284,7 +275,7 @@ public class RatingServiceImpl implements RatingService
*/
public float getTotalRating(NodeRef targetNode, String ratingSchemeName)
{
//TODO Performance improvement? : put node rating total/count/average into a multi-valued
//TODO Performance improvement? : put node rating total/count/average into a
// property in the db.
List<ChildAssociationRef> ratingsNodes = this.getRatingNodeChildren(targetNode, null);
@@ -295,13 +286,10 @@ public class RatingServiceImpl implements RatingService
float result = 0;
for (ChildAssociationRef ratingsNode : ratingsNodes)
{
List<Rating> ratings = getRatingsFrom(ratingsNode.getChildRef());
for (Rating rating : ratings)
Rating rating = getRatingFrom(ratingsNode.getChildRef());
if (rating.getScheme().getName().equals(ratingSchemeName))
{
if (rating.getScheme().getName().equals(ratingSchemeName))
{
result += rating.getScore();
}
result += rating.getScore();
}
}
return result;
@@ -319,14 +307,11 @@ public class RatingServiceImpl implements RatingService
float ratingTotal = 0;
for (ChildAssociationRef ratingsNode : ratingsNodes)
{
List<Rating> ratings = getRatingsFrom(ratingsNode.getChildRef());
for (Rating rating : ratings)
Rating rating = getRatingFrom(ratingsNode.getChildRef());
if (rating.getScheme().getName().equals(ratingSchemeName))
{
if (rating.getScheme().getName().equals(ratingSchemeName))
{
ratingCount++;
ratingTotal += rating.getScore();
}
ratingCount++;
ratingTotal += rating.getScore();
}
}
if (ratingCount == 0)
@@ -350,13 +335,10 @@ public class RatingServiceImpl implements RatingService
int result = 0;
for (ChildAssociationRef ratingsNode : ratingsNodes)
{
List<Rating> ratings = getRatingsFrom(ratingsNode.getChildRef());
for (Rating rating : ratings)
Rating rating = getRatingFrom(ratingsNode.getChildRef());
if (rating.getScheme().getName().equals(ratingSchemeName))
{
if (rating.getScheme().getName().equals(ratingSchemeName))
{
result++;
}
result++;
}
}
return result;
@@ -390,13 +372,11 @@ public class RatingServiceImpl implements RatingService
}
/**
* This method returns a List of {@link Rating} objects for the specified cm:rating
* node. As it's one ratingNode the results will be form one user, but will represent
* 0..n schemes.
* This method returns a {@link Rating} object for the specified cm:rating node.
* @param ratingNode
* @return
*/
private List<Rating> getRatingsFrom(NodeRef ratingNode)
private Rating getRatingFrom(NodeRef ratingNode)
{
// The appliedBy is encoded in the parent assoc qname.
// It will be the same user for all ratings in this node.
@@ -404,16 +384,12 @@ public class RatingServiceImpl implements RatingService
String appliedBy = parentAssoc.getQName().getLocalName();
Map<QName, Serializable> properties = nodeService.getProperties(ratingNode);
RatingNodeProperties ratingProps = RatingNodeProperties.createFrom(properties);
List<Rating> result = new ArrayList<Rating>(ratingProps.size());
for (int i = 0; i < ratingProps.size(); i++)
{
final String schemeName = ratingProps.getRatingAt(i).getScheme();
RatingScheme scheme = getRatingScheme(schemeName);
result.add(new Rating(scheme, ratingProps.getRatingAt(i).getScore(),
appliedBy, ratingProps.getRatingAt(i).getDate()));
}
final String schemeName = (String)properties.get(ContentModel.PROP_RATING_SCHEME);
final Float score = (Float)properties.get(ContentModel.PROP_RATING_SCORE);
final Date ratedAt = (Date)properties.get(ContentModel.PROP_RATED_AT);
RatingScheme scheme = getRatingScheme(schemeName);
Rating result = new Rating(scheme, score, appliedBy, ratedAt);
return result;
}
}

88
source/java/org/alfresco/repo/rating/RatingServiceIntegrationTest.java
View File

@@ -20,7 +20,6 @@
package org.alfresco.repo.rating;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
@@ -179,7 +178,7 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
fail("Illegal rating " + illegalRating + " should have caused exception.");
}
public void testApplyUpdateDeleteRatings_SingleUserMultipleSchemes() throws Exception
public void testApplyUpdateDeleteRatings() throws Exception
{
// We'll do all this as user 'UserOne'.
AuthenticationUtil.setFullyAuthenticatedUser(USER_TWO);
@@ -189,10 +188,8 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
assertNull("Expected a null rating,", nullRating);
assertNull("Expected a null remove result.", ratingService.removeRatingByCurrentUser(testDoc_Admin, LIKES_SCHEME_NAME));
final float likesScore = 1;
final float fiveStarScore = 5;
ratingService.applyRating(testDoc_Admin, likesScore, LIKES_SCHEME_NAME);
ratingService.applyRating(testDoc_Admin, fiveStarScore, FIVE_STAR_SCHEME_NAME);
// Some basic node structure tests.
@@ -213,16 +210,8 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
// Now to check the persisted ratings data are ok.
Rating likeRating = ratingService.getRatingByCurrentUser(testDoc_Admin, LIKES_SCHEME_NAME);
Rating fiveStarRating = ratingService.getRatingByCurrentUser(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertNotNull("'like' rating was null.", likeRating);
assertEquals("Wrong score for rating", likesScore, likeRating.getScore());
assertEquals("Wrong user for rating", AuthenticationUtil.getFullyAuthenticatedUser(), likeRating.getAppliedBy());
final Date likeRatingAppliedAt = likeRating.getAppliedAt();
assertDateIsCloseToNow(likeRatingAppliedAt);
assertNotNull("'5*' rating was null.", fiveStarRating);
assertEquals("Wrong score for rating", fiveStarScore, fiveStarRating.getScore());
assertEquals("Wrong user for rating", AuthenticationUtil.getFullyAuthenticatedUser(), fiveStarRating.getAppliedBy());
@@ -248,27 +237,13 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
// Now to check the updated ratings data are ok.
Rating updatedFiveStarRating = ratingService.getRatingByCurrentUser(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
// 'like' rating data should be unchanged.
assertNotNull("'like' rating was null.", likeRating);
assertEquals("Wrong score for rating", likesScore, likeRating.getScore());
assertEquals("Wrong user for rating", AuthenticationUtil.getFullyAuthenticatedUser(), likeRating.getAppliedBy());
assertEquals("Wrong date for rating", likeRatingAppliedAt, likeRating.getAppliedAt());
// But these 'five star' data should be changed - new score, new date
// 'five star' data should be changed - new score, new date
assertNotNull("'5*' rating was null.", updatedFiveStarRating);
assertEquals("Wrong score for rating", updatedFiveStarScore, updatedFiveStarRating.getScore());
assertEquals("Wrong user for rating", AuthenticationUtil.getFullyAuthenticatedUser(), updatedFiveStarRating.getAppliedBy());
assertTrue("five star rating date was unchanged.", fiveStarRatingAppliedAt.equals(updatedFiveStarRating.getAppliedAt()) == false);
assertDateIsCloseToNow(updatedFiveStarRating.getAppliedAt());
// Now we'll delete the 'likes' rating.
Rating deletedLikesRating = ratingService.removeRatingByCurrentUser(testDoc_Admin, LIKES_SCHEME_NAME);
// 'like' rating data should be unchanged.
assertNotNull("'like' rating was null.", deletedLikesRating);
assertEquals("Wrong score for rating", likesScore, deletedLikesRating.getScore());
assertEquals("Wrong user for rating", AuthenticationUtil.getFullyAuthenticatedUser(), deletedLikesRating.getAppliedBy());
assertEquals("Wrong date for rating", likeRatingAppliedAt, deletedLikesRating.getAppliedAt());
// And delete the 'five star' rating.
Rating deletedStarRating = ratingService.removeRatingByCurrentUser(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
// 'five star' rating data should be unchanged.
@@ -279,7 +254,6 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
// And the deleted ratings should be gone.
assertNull("5* rating not null.", ratingService.getRatingByCurrentUser(testDoc_Admin, FIVE_STAR_SCHEME_NAME));
assertNull("likes rating not null", ratingService.getRatingByCurrentUser(testDoc_Admin, LIKES_SCHEME_NAME));
}
/**
@@ -299,6 +273,64 @@ public class RatingServiceIntegrationTest extends BaseAlfrescoSpringTest
// assertTrue("Date was not within " + millisTolerance + "ms of 'now'.", now.getTime() - d.getTime() < millisTolerance);
}
public void testOneUserRatesAndRerates() throws Exception
{
AuthenticationUtil.setFullyAuthenticatedUser(USER_ONE);
ratingService.applyRating(testDoc_Admin, 1.0f, FIVE_STAR_SCHEME_NAME);
// A new score in the same rating scheme by the same user should replace the previous score.
ratingService.applyRating(testDoc_Admin, 2.0f, FIVE_STAR_SCHEME_NAME);
float meanRating = ratingService.getAverageRating(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong mean rating.", 2f, meanRating);
float totalRating = ratingService.getTotalRating(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong total rating.", 2.0f, totalRating);
int ratingsCount = ratingService.getRatingsCount(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong ratings count.", 1, ratingsCount);
// There should only be one rating child node under the rated node.
assertEquals("Wrong number of child nodes", 1 , nodeService.getChildAssocs(testDoc_Admin).size());
}
/**
* This test method ensures that if a single user attempts to rate a piece of content in two
* different rating schemes, then an exception should be thrown.
* @throws Exception
*/
public void testOneUserRatesInTwoSchemes() throws Exception
{
AuthenticationUtil.setFullyAuthenticatedUser(USER_ONE);
ratingService.applyRating(testDoc_Admin, 1.0f, FIVE_STAR_SCHEME_NAME);
// A new score in a different rating scheme by the same user should fail.
boolean correctExceptionThrown = false;
try
{
ratingService.applyRating(testDoc_Admin, 2.0f, LIKES_SCHEME_NAME);
} catch (RatingServiceException expected)
{
correctExceptionThrown = true;
}
if (correctExceptionThrown == false)
{
fail("Expected exception not thrown.");
}
float meanRating = ratingService.getAverageRating(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong mean rating.", 1f, meanRating);
float totalRating = ratingService.getTotalRating(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong total rating.", 1f, totalRating);
int ratingsCount = ratingService.getRatingsCount(testDoc_Admin, FIVE_STAR_SCHEME_NAME);
assertEquals("Document had wrong ratings count.", 1, ratingsCount);
// There should only be one rating child node under the rated node.
assertEquals("Wrong number of child nodes", 1 , nodeService.getChildAssocs(testDoc_Admin).size());
}
public void testApplyRating_MultipleUsers() throws Exception
{
// 2 different users rating the same piece of content in the same rating scheme

4
source/java/org/alfresco/repo/rating/script/ScriptRatingService.java
View File

@@ -26,6 +26,7 @@ import org.alfresco.repo.jscript.ScriptNode;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.rating.Rating;
import org.alfresco.service.cmr.rating.RatingService;
import org.alfresco.service.cmr.rating.RatingServiceException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -92,10 +93,13 @@ public class ScriptRatingService extends BaseScopableProcessorExtension
* Applies the given rating to the specified node using the specified ratingScheme.
* It is the responsibility of the caller to ensure that the rating scheme exists
* and that the rating is within the limits defined for that scheme.
* <p/>Furthermore, only one rating scheme per user per target node is supported. Any attempt
* by one user to apply a second rating in a different scheme will result in a {@link RatingServiceException}.
*
* @param node
* @param rating
* @param ratingSchemeName
* @throws RatingServiceException
* @see ScriptRatingService#getMin(String)
* @see ScriptRatingService#getMax(String)
*/

22
source/java/org/alfresco/service/cmr/rating/RatingService.java
View File

@@ -64,13 +64,18 @@ public interface RatingService
/**
* This method applies the given rating to the specified target node. If a rating
* from the current user in the specified scheme already exists, it will be replaced.
* <p/>
* Note that only one rating scheme per user per targetNode is supported at present.
* If a user attempts to apply a second rating in a different rating scheme to any given
* target node, a {@link RatingServiceException} will be thrown.
*
* @param targetNode the node to which the rating is to be applied.
* @param rating the rating which is to be applied.
* @param ratingSchemeName the name of the rating scheme to use.
*
* @throws RatingServiceException if the rating is not within the range defined by the named scheme
* or if the named scheme is not registered.
* or if the named scheme is not registered or if the rating would result
* in multiple ratings by the same user.
* @see RatingService#getRatingSchemes()
* @see RatingScheme
*/
@@ -91,6 +96,20 @@ public interface RatingService
@NotAuditable
int getRatingsCount(NodeRef targetNode, String ratingSchemeName);
/**
* This method gets the total accumulated rating score for
* the specified node in the specified {@link RatingScheme}.
* That is, the rating scores for all users for the specified
* node are summed to give the result.
*
* @param targetNode the node on which the rating total is sought.
* @param ratingScheme the rating scheme to use.
*
* @return the sum of all individual ratings applied to this node in the specified scheme.
* @see RatingService#getRatingSchemes()
* @see RatingScheme
*/
@NotAuditable
float getTotalRating(NodeRef targetNode, String ratingSchemeName);
/**
@@ -100,6 +119,7 @@ public interface RatingService
* @param ratingSchemeName the rating scheme name in which the average is defined.
* @return the average (mean) value if there is one, else -1.
*/
@NotAuditable
float getAverageRating(NodeRef targetNode, String ratingSchemeName);
/**