MetaStore folder to be used?

Hi All,

We are on Vignette Portal 8.0

We have a requirement to store a shared property(single property maintained across portlets and users) in form of a hash map in metastore.

Can you please let us know which meta store folder to be used along with the api to get and set the document. Have used below as sample code, not sure if storing objects in DefaultMetaStoreRootFolder is a good practice. Your suggestions are most welcome

Thanks & Regards

Ankur M Goyal

<%@page import="com.epicentric.metastore.MetaStoreDocument"%>
<%@page import="com.epicentric.metastore.MetaStoreFolder"%>
<%@page import="com.epicentric.metastore.MetaStore"%>

<%

    MetaStoreFolder    metaFolder = MetaStore.getDefaultMetaStoreRootFolder();
    Integer i = null ;
    if(metaFolder !=null){

        MetaStoreDocument document = metaFolder.getDocument("LIKE_LIST");
        if(document == null){
            document = metaFolder.createDocument("LIKE_LIST");
        }

        Object object = document.getObject();

        if(object == null){
            i = new Integer(0);
        } else{
            i = (Integer)object;
        }

        i+=1;

        document.delete();

        metaFolder.storeDocument("LIKE_LIST", i);
    }

%>

<script>
    alert('<%=i%>');
</script>

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Comments

Al_Daniel

Hello Ankur,

You can create a new folder to store the document. Storing it in the root folder can clutter the MetaStore filesystem.

Here is an example demonstrating the API calls:

    <%-- BEGIN metastoretest.jsp --%>

        <%@ page import="com.epicentric.metastore.*,
            java.util.*"
            contentType="text/html; charset=UTF-8"
        %>

        <html>
            <body>

        <%

            final String FOLDER = "/path/to/";
            final String DOCUMENT = "document";

            Map<String, String> hashMap = new HashMap<String, String>();
            hashMap.put("key", "value");

            // Create Document
            MetaStore metaStore = MetaStore.getDefaultMetaStore();
            if (!metaStore.pathExists(FOLDER)) {
                metaStore.createPath(FOLDER);
            }
            MetaStoreDocument document = metaStore.getDocument(FOLDER, DOCUMENT);
            if(document == null) {
                document = metaStore.createDocument(FOLDER, DOCUMENT);
            }

            // Store Map
            document.setContents(hashMap);

            // Retrieve Document
            MetaStoreDocument test_document = metaStore.getDocument(FOLDER, DOCUMENT);

            // Retrieve Map
            Map<String, String> test_hashMap = (HashMap<String, String>)test_document.getObject();

            out.println("test_hashMap.isEmpty(): " + test_hashMap.isEmpty() + ", test_hashMap.get(\"key\"): " + (String) test_hashMap.get("key"));

        %>

            </body>
        </html>

    <%-- END metastoretest.jsp --%>

Kind Regards

Alex

Vinay_Purohit

Thanks for you reply

I have a requirement wherein there would be multiple writes to meta store (persisting hashmap as global document object). To avoid frequent updates to meta store(in turn database) I was thinking of using caching strtergies provided by vignette (Broadcasting stratergy) and then persist data to meta store at once, had few queries around this
Does caching persist data in database to or is it in memory?
Also please let me know if you have any other options

Vinay_Purohit

Also do I need to create cache with same name(with broadcasting stratergy) on each server in cluster

Example in vignette doc

PortalInitialContext context = new PortalInitialContext();

CacheFactory factory = (CacheFactory)context.lookup(CacheFac

tory.CONTEXT_URI);

// Create the TimeToLiveStrategy

BroadcastingStrategy strategy = cacheFactory.createBroadcastingStrategy(); // Create a Cache try { Cache widgetCache = factory.createCache( "com.companyname.widget.widgetcache", strategies); } catch (CacheAlreadyExistsException caee) { // Handle error . . . }List strategies = Collections.singletonList(strategy);