Examples of org.apache.isis.core.metamodel.adapter.version.Version

Package org.apache.isis.core.metamodel.adapter.version

Examples of org.apache.isis.core.metamodel.adapter.version.Version

org.apache.isis.core.metamodel.adapter.version.Version
An instance of this class is held by each {@link ObjectAdapter} and is usedto represent a particular version (at a point in time) of domain object wrapped by that adapter.
This is normally done using some form of incrementing number or timestamp, which would be held within the implementing class. The numbers, timestamps, etc should change for each changed object, and the different() method should indicate that the two Version objects are different.
The user's name and a timestamp should alos be kept so that when an message is passed to the user it can be of the form "user has change object at time"


        final CollectionFacet collectionFacet = field.getFacet(CollectionFacet.class);
        for (final ObjectAdapter element : collectionFacet.iterable(collection)) {
            final StringBuffer insert = new StringBuffer(sql);
            insert.append(values(connector, element));
            final Version version = SerialNumberVersion.create(0, "", new Date());
            insert.append(versionMapping.insertValues(connector, version));
            insert.append(") ");


            connector.insert(insert.toString());
            element.setVersion(version);

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    }


    @Override
    public void createObject(final DatabaseConnector connector, final ObjectAdapter object) {
        final int versionSequence = 1;
        final Version version = createVersion(versionSequence);


        final StringBuffer sql = new StringBuffer();
        sql.append("insert into " + table + " (");
        idMapping.appendColumnNames(sql);
        sql.append(", ");

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        }
    }


    @Override
    public void save(final DatabaseConnector connector, final ObjectAdapter adapter) {
        final Version version = adapter.getVersion();
        final long nextSequence;
        if (useVersioning) {
            nextSequence = version.getSequence() + 1;
        } else {
            nextSequence = version.getSequence();
        }


        final StringBuffer sql = new StringBuffer();
        sql.append("UPDATE " + table + " SET ");
        for (final FieldMapping mapping : fieldMappingByField.values()) {

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                    collection.addElement(oidFrom(attributes));
                }
            } else {
                if (tagName.equals("isis")) {
                    final RootOidDefault oid = oidFrom(attributes);
                    final Version fileVersion = fileVersionFrom(attributes);
                    
                    object = new ObjectData(oid, fileVersion);
                } else if (tagName.equals("collection")) {
                    
                    final RootOidDefault oid = oidFrom(attributes);
                    final Version fileVersion = fileVersionFrom(attributes);
                    
                    collection = new CollectionData(oid, fileVersion);
                } else {
                    throw new SAXException("Invalid data");
                }

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    }


    private static Version fileVersionFrom(final Attributes attributes) {
        final String user = attributes.getValue("user");
        final long version = Long.valueOf(attributes.getValue("ver"), 16).longValue();
        final Version fileVersion = FileVersion.create(user, version);
        return fileVersion;
    }

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    public Version getLock(final Results rs) {
        final long number = rs.getLong(versionColumn);
        final String user = rs.getString(lastActivityUserColumn);
        final Date time = rs.getJavaDateTime(lastActivityDateColumn, Defaults.getCalendar());
        final Version version = SerialNumberVersion.create(number, user, time);
        return version;
    }

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        final DomainObjectReprRenderer renderer = new DomainObjectReprRenderer(resourceContext, null, JsonRepresentation.newMap());
        renderer.with(objectAdapter).includesSelf();


        final ResponseBuilder responseBuilder = Responses.ofOk(renderer, Caching.NONE);


        final Version version = objectAdapter.getVersion();
        if (version != null && version.getTime() != null) {
            responseBuilder.tag(ETAG_FORMAT.format(version.getTime()));
        }
        return buildResponse(responseBuilder);
    }

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            try {
                if(concurrencyChecking.isChecking()) {
                    
                    // check for exception, but don't throw if suppressed through thread-local
                    final Version otherVersion = originalOid.getVersion();
                    final Version thisVersion = recreatedOid.getVersion();
                    if(thisVersion != null && 
                       otherVersion != null && 
                       thisVersion.different(otherVersion)) {
                        
                        if(isConcurrencyCheckingGloballyEnabled() && ConcurrencyChecking.isCurrentlyEnabled()) {
                            LOG.info("concurrency conflict detected on " + recreatedOid + " (" + otherVersion + ")");
                            final String currentUser = getAuthenticationSession().getUserName();
                            throw new ConcurrencyException(currentUser, recreatedOid, thisVersion, otherVersion);
                        } else {
                            LOG.warn("concurrency conflict detected but suppressed, on " + recreatedOid + " (" + otherVersion + ")");
                        }
                    }
                }
            } finally {
                final Version originalVersion = originalOid.getVersion();
                final Version recreatedVersion = recreatedOid.getVersion();
                if(recreatedVersion != null && (
                        originalVersion == null || 
                        recreatedVersion.different(originalVersion))
                    ) {
                    if(LOG.isDebugEnabled()) {
                        LOG.debug("updating version in oid, on " + originalOid + " (" + originalVersion + ") to (" + recreatedVersion +")");
                    }
                    originalOid.setVersion(recreatedVersion);

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            getAggregateRoot().checkLock(otherVersion);
            return;
        }
        
        Oid thisOid = getOid();
        final Version thisVersion = thisOid.getVersion();
        
        // check for exception, but don't throw if suppressed through thread-local
        if(thisVersion != null && 
           otherVersion != null && 
           thisVersion.different(otherVersion)) {
            
            if(ConcurrencyChecking.isCurrentlyEnabled()) {
                LOG.info("concurrency conflict detected on " + thisOid + " (" + otherVersion + ")");
                final String currentUser = getAuthenticationSession().getUserName();
                throw new ConcurrencyException(currentUser, thisOid, thisVersion, otherVersion);

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            rootOid.setVersion(version);
        }
    }


    private boolean shouldSetVersion(final Version otherVersion) {
        final Version version = getOid().getVersion();
        return version == null || otherVersion == null || otherVersion.different(version);
    }

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