Melaka- One high level comment. I think it will be better to have update-index take a single argument as we discussed (just the index folder). The collection location can be saved as part of the metadata information in the collection folder. Steven
On Wed, Jun 22, 2016 at 2:04 PM, Menaka Madushanka <[email protected]> wrote: > Hello, > > This is the summary of the implementation. (Included in Pull Request > message as well) > > *Update Index Query* > The update-index query takes two arguments, collection directory and index > directory. > It shares some of the functionalities from build-index-on-collection query > so, some changes were done to the following classes in order to use them in > updating index process and to maximize code reuse > > > 1. IndexConstructorUtil.java : Created a new function to get an > instance of IndexDocumentBuilder which can be used in IndexUpdater.java > class. > 2. IndexDocumentBuilder.java : Added a new string filed containing the > corresponding file path which is needed to retrieve a document related to > an XML file. > > > *Metadata handling* > Here a POJO is created to properly manage the metadata for a file. > (XmlMetadata.java) > Currently it contains following fields. > > > 1. File path > 2. File Name (Not used) > 3. Checksum String > > When storing metadata, a HashMap is created with file path as the key and > XmlMetadata object. This map is then serialized and written to a file named > metadata.file and stored in the same directory where the index is stored. > > *Update Index process* > > - If a file is detected as modified, the current index document > related to that file is deleted and newly created index document is added. > - If a new file is detected, a new index document will be created and > added to the existing index. > - If the file is deleted, delete the index document related to that > file. > - After every task, update the metadata object and after all processes > completed, write the new metadata map to the file. > > Please review the pull request and merge. > > https://github.com/apache/vxquery/pull/62 > > Thank you > Menaka > > > -- > *Menaka Madushanka Jayawardena* > Faculty of Engineering, <http://www.pdn.ac.lk/eng> > University of Peradeniyaya. > LinkedIn <http://lk.linkedin.com/in/menakajayawardena> > TP:- 071 885 1183/ 071 350 5470 >
