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h2. Summary

| Project | DSpace ClientUI built on RESTful API |
| Student | [~tr4n2uil] |
| Mentors | * [~bojan] (lead)&nbsp;
* [~mdiggory] |
| Technologies | DSpace REST \\
JavaScript jQuery \\ |
| Proposal | [Melange|http://socghop.appspot.com/gsoc/proposal/review/google/gsoc2011/tr4n2uil/1] |
| Location for project | [https://github.com/tr4n2uil/restclient] |
| Notes | [jQuery|https://wiki.duraspace.org/display/GSOC/jQuery+Notes] |


h2. Requirements

# Client run interface
# Attractive look and feel
# Easy to customize

h2. Functional Specifications


h4. Features to be supported

# Respository Browsing
# Repository Manipulation
# Content Searching
# Statistics
# Administration

h4. Customizations to be supported

# Stylesheets (CSS)
# Layout
# Themes
# Internationalization

h2. Project Timeline

| (/) | Ready |
| (+) | Base done, Improvement phase |
| (y) | In Progress |


h4. Before May 24

# Obtain access to :
#* (/) Wiki
#* (/) Project repository
# (/) Download, build and install local DSpace instance
# (/) Download, build and install DSpace REST module
# (/) Test and verify the installation
# (/) Go through the functionality of DSpace and DSpace REST API
# (/) Compare possible JavaScript UI frameworks \-\- Ext JS preferred

{note}Mark: I would like to see a bit more dialog with Bojan concerning the REST API contracts and migration to Spring, mainly, are we happy with these API contracts and using them for the students project, or do we need to consider some possible changes int he API to adopt to using Spring REST instead of Entity Broker.  And if so, is there a timeline for providing those changes in scope of the 1.8 release?

Vibhaj: Confirmed that the possible migration shall not affect the REST interface and hence RestClient project.{note}

h4. May 25 - June 15

# (y) Get familiar with DSpace REST API
## collections,  communities, items and bitstreams
##* create
##* (/) view
##* edit
##* delete
## users and groups
##* (/) view
## search
## generating statistics
# (/) Decide the JavaScript Library to be used by discussing with the DSpace community: *jQuery* \[decided by community\]
# (+) Learn the jQuery JavaScript Library
#* (/) Selectors
#* (/) Actions and Methods
#* (/) Events
#* (y) UI Widgets
# (+) Design architecture for client run ServiceClient supported by RESTful (JSON) services
# (+) Design generic Views, Renderers, Templates and Modules for ServiceClient
# (y) Plan these extensions for RestClient

h4. June 15 - June 30

# (y) Implement extensions (Modules and Templates) to ServiceClient in RESTClient to provide support for :
## Repository Browsing
##* Communities
##** (+) All
##** (+) Single
##** (y) Subcommunities
##** Sort
##* Collections
##** (+) All
##** (+) Single
##** (y) Recent Submissions
##** Sort
##* Items
##** All
##** Single
##* Bitstreams
##** Download
## Repository Manupulation
##* Communities
##* Collections
##* Items
## Content Searching
## Administration
##* Groups
##* Users
##** Login
## Statistics
##* Reports
##* Charts and Visualization

h4. July 01 - July 15

# Testing
# Partial documentation
# GSoC Mid Term Evaluations

h4. July 16 - July 31

# Enhancing the look and feel
# Look into and improve scope for customizations
#* Stylesheets (CSS)
#* Layout
#* Themes
#* Internationalization (jQuery support required)
# Improve the architecture of RESTClient and ServiceClient


Timeline shall be completed as project progresses ...

h2. Recent Screenshots&nbsp;


h2. !v0.0.7-home.PNG|border=1!


h2. !v0.0.7.PNG|border=1!


h2. !v0.1.0-single-community-with-logo.PNG|border=1!


h2.


h2. !v0.0.9-all-collections.PNG|border=1!


h2.


h2. !v0.1.1-single-collection.PNG|border=1!


h2.


h2. Issues / Problems


h6. {color:#004697}{*}1. \[ 04 Jun 2011 \] I am not getting the community logo using the URL /communities/\{id\}/logo{*}{color}

{color:#004697}Solved : /bitstream/{color}{community.logo.id}{color:#004697}/receive{color}

h6. {color:#004697}{*}2. \[ 05 Jun 2011 \] While working with REST module, I found that after making many requests while testing for some time, I get the following exception and then the module does not give correct results for further requests. Kindly look into the issue and inform me if the error is occurring due to some mistake from my side.*{color}

{code}org.postgresql.util.PSQLException: This statement has been closed.
        at org.postgresql.jdbc2.AbstractJdbc2Statement.checkClosed(AbstractJdbc2Statement.java:2424)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.setInt(AbstractJdbc2Statement.java:1147)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.setInt(DelegatingPreparedStatement.java:120)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.setInt(DelegatingPreparedStatement.java:120)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.setInt(DelegatingPreparedStatement.java:120)
        at org.dspace.storage.rdbms.DatabaseManager.loadParameters(DatabaseManager.java:1558)
        at org.dspace.storage.rdbms.DatabaseManager.queryTable(DatabaseManager.java:223)
        at org.dspace.storage.rdbms.DatabaseManager.querySingleTable(DatabaseManager.java:366)
        at org.dspace.storage.rdbms.DatabaseManager.findByUnique(DatabaseManager.java:514)
        at org.dspace.storage.rdbms.DatabaseManager.find(DatabaseManager.java:476)
        at org.dspace.eperson.Group.find(Group.java:684)
        at org.dspace.content.Collection.groupFromColumn(Collection.java:1315)
        at org.dspace.content.Collection.<init>(Collection.java:134)
        at org.dspace.content.Collection.findAll(Collection.java:319)
        at org.dspace.rest.providers.CollectionsProvider.getEntities(CollectionsProvider.java:229)
        at org.sakaiproject.entitybus.impl.EntityBrokerManagerImpl.internalGetEntities(EntityBrokerManagerImpl.java:550)
        at org.sakaiproject.entitybus.impl.EntityBrokerManagerImpl.getEntitiesData(EntityBrokerManagerImpl.java:402)
        at org.sakaiproject.entitybus.rest.EntityHandlerImpl.handleEntityAccess(EntityHandlerImpl.java:563)
        at org.sakaiproject.entitybus.util.servlet.DirectServlet.dispatch(DirectServlet.java:186)
        at org.sakaiproject.entitybus.util.servlet.DirectServlet.handleRequest(DirectServlet.java:157)
        at org.sakaiproject.entitybus.util.servlet.DirectServlet.service(DirectServlet.java:130)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
        at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:306)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:323)
        at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1719)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
INFO: EntityEncodingManager: No entities to format (json) and output for ref (/collections)
WARN Could not process entity: /collections/2 (404)[null]: Attempted to access an entity URL path (/collections/2.json) for an entity (/collections/2) that does not exist
{code}