[tmp/jakarta-migration.git] /

/**
 *  This document is a part of the source code and related artifacts
 *  for CollectionSpace, an open source collections management system
 *  for museums and related institutions:

 *  http://www.collectionspace.org
 *  http://wiki.collectionspace.org

 *  Copyright 2009 University of California at Berkeley

 *  Licensed under the Educational Community License (ECL), Version 2.0.
 *  You may not use this file except in compliance with this License.

 *  You may obtain a copy of the ECL 2.0 License at

 *  https://source.collectionspace.org/collection-space/LICENSE.txt

 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.collectionspace.services.common.vocabulary.nuxeo;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.ws.rs.core.Response;

import org.collectionspace.services.client.AbstractCommonListUtils;
import org.collectionspace.services.client.AuthorityClient;
import org.collectionspace.services.client.CollectionSpaceClient;
import org.collectionspace.services.client.PayloadInputPart;
import org.collectionspace.services.client.VocabularyClient;
import org.collectionspace.services.client.PoxPayloadIn;
import org.collectionspace.services.client.PoxPayloadOut;
import org.collectionspace.services.client.XmlTools;
import org.collectionspace.services.client.workflow.WorkflowClient;
import org.collectionspace.services.common.ResourceMap;
import org.collectionspace.services.common.api.RefName;
import org.collectionspace.services.common.api.RefName.Authority;
import org.collectionspace.services.common.api.RefNameUtils;
import org.collectionspace.services.common.api.RefNameUtils.AuthorityInfo;
import org.collectionspace.services.common.api.RefNameUtils.AuthorityTermInfo;
import org.collectionspace.services.common.api.Tools;
import org.collectionspace.services.common.context.ServiceContext;
import org.collectionspace.services.common.document.DocumentException;
import org.collectionspace.services.common.document.DocumentHandler;
import org.collectionspace.services.common.document.DocumentNotFoundException;
import org.collectionspace.services.common.document.DocumentReferenceException;
import org.collectionspace.services.common.document.DocumentWrapper;
import org.collectionspace.services.common.vocabulary.AuthorityItemJAXBSchema;
import org.collectionspace.services.common.vocabulary.AuthorityJAXBSchema;
import org.collectionspace.services.common.vocabulary.AuthorityResource;
import org.collectionspace.services.common.vocabulary.AuthorityServiceUtils;
import org.collectionspace.services.common.vocabulary.RefNameServiceUtils.AuthorityItemSpecifier;
import org.collectionspace.services.common.vocabulary.RefNameServiceUtils.Specifier;
import org.collectionspace.services.common.vocabulary.RefNameServiceUtils.SpecifierForm;
import org.collectionspace.services.config.service.ObjectPartType;
import org.collectionspace.services.jaxb.AbstractCommonList;
import org.collectionspace.services.jaxb.AbstractCommonList.ListItem;
import org.collectionspace.services.lifecycle.TransitionDef;
import org.collectionspace.services.nuxeo.client.java.NuxeoDocumentModelHandler;
import org.collectionspace.services.nuxeo.client.java.CoreSessionInterface;
import org.collectionspace.services.nuxeo.client.java.RepositoryClientImpl;
import org.collectionspace.services.nuxeo.util.NuxeoUtils;
import org.dom4j.Document;
import org.dom4j.Element;
import org.nuxeo.ecm.core.api.ClientException;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * AuthorityDocumentModelHandler
 *
 * $LastChangedRevision: $
 * $LastChangedDate: $
 */
public abstract class AuthorityDocumentModelHandler<AuthCommon>
        extends NuxeoDocumentModelHandler<AuthCommon> {
    
        private final Logger logger = LoggerFactory.getLogger(AuthorityDocumentModelHandler.class);     
    
        protected String authorityCommonSchemaName;
    protected String authorityItemCommonSchemaName;
    protected boolean shouldUpdateRevNumber = true; // default to updating the revision number

    public AuthorityDocumentModelHandler(String authorityCommonSchemaName, String authorityItemCommonSchemaName) {
        this.authorityCommonSchemaName = authorityCommonSchemaName;
        this.authorityItemCommonSchemaName = authorityItemCommonSchemaName;
    }
    
    public void setShouldUpdateRevNumber(boolean flag) {
        this.shouldUpdateRevNumber = flag;
    }
    
    public boolean getShouldUpdateRevNumber() {
        return this.shouldUpdateRevNumber;
    }
    
    /**
     * The entity type expected from the JAX-RS Response object
     */
    public Class<String> getEntityResponseType() {
        return String.class;
    }
    
    @Override
    public void prepareSync() throws Exception {
        this.setShouldUpdateRevNumber(AuthorityServiceUtils.DONT_UPDATE_REV);  // Never update rev nums on sync operations
    }

    protected PayloadInputPart extractPart(Response res, String partLabel)
            throws Exception {
            PoxPayloadIn input = new PoxPayloadIn((String)res.readEntity(getEntityResponseType()));
            PayloadInputPart payloadInputPart = input.getPart(partLabel);
            if (payloadInputPart == null) {
                logger.error("Part " + partLabel + " was unexpectedly null.");
            }
            return payloadInputPart;
    }
    
    @Override
    public boolean handleSync(DocumentWrapper<Object> wrapDoc) throws Exception {
        boolean result = false;
        ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = getServiceContext();
        Specifier specifier = (Specifier) wrapDoc.getWrappedObject();
        //
        // Get the rev number of the authority so we can compare with rev number of shared authority
        //
        DocumentModel docModel = NuxeoUtils.getDocFromSpecifier(ctx, getRepositorySession(), authorityCommonSchemaName, specifier);
        String authorityCsid = docModel.getName();
        Long localRev = (Long) NuxeoUtils.getProperyValue(docModel, AuthorityJAXBSchema.REV);
        String shortId = (String) NuxeoUtils.getProperyValue(docModel, AuthorityJAXBSchema.SHORT_IDENTIFIER);
        //
        // Using the short ID of the local authority, create a URN specifier to retrieve the SAS authority
        //
        Specifier sasSpecifier = new Specifier(SpecifierForm.URN_NAME, shortId);
        PoxPayloadIn sasPayloadIn = AuthorityServiceUtils.requestPayloadIn(ctx, sasSpecifier, getEntityResponseType());
        //
        // If the authority on the SAS is newer, synch all the items and then the authority record as well
        //
        //
        Long sasRev = getRevision(sasPayloadIn);
        if (sasRev > localRev) {
                //
                // First, sync all the authority items
                //
                syncAllItems(ctx, sasSpecifier);
                //
                // Next, sync the authority resource/record itself
                //
                AuthorityResource authorityResource = (AuthorityResource) ctx.getResource();
                ctx.setProperty(AuthorityServiceUtils.SHOULD_UPDATE_REV_PROPERTY, AuthorityServiceUtils.DONT_UPDATE_REV); // Don't update the rev number, use the rev number for the SAS instance instead
                PoxPayloadOut payloadOut = authorityResource.update(ctx, ctx.getResourceMap(), ctx.getUriInfo(), docModel.getName(), 
                                sasPayloadIn);
                if (payloadOut != null) {
                        ctx.setOutput(payloadOut);
                        result = true;
                }
                //
                // We need to transition the authority into a replicated state now that we've sync'd it.
                //
                authorityResource.updateWorkflowWithTransition(ctx, authorityCsid, WorkflowClient.WORKFLOWTRANSITION_REPLICATE);
        }
        
        return result;
    }
    
    /*
     * Get the list of authority items from the remote shared authority server (SAS) and try
     * to synchronize them with the local items.  If items exist on the remote but not the local, we'll create them.
     */
    protected int syncAllItems(ServiceContext ctx, Specifier sasAuthoritySpecifier) throws Exception {
        int result = -1;
        int created = 0;
        int synched = 0;
        int alreadySynched = 0;
        int deprecated = 0;
        int totalItemsProcessed = 0;
        ArrayList<String> itemsInRemoteAuthority = new ArrayList<String>();
        //
        // Iterate over the list of items/terms in the remote authority
        //
        PoxPayloadIn sasPayloadInItemList = requestPayloadInItemList(ctx, sasAuthoritySpecifier);
        List<Element> itemList = getItemList(sasPayloadInItemList);
        if (itemList != null) {
                for (Element e:itemList) {
                        String remoteRefName = XmlTools.getElementValue(e, AuthorityItemJAXBSchema.REF_NAME);
                        itemsInRemoteAuthority.add(XmlTools.getElementValue(e, AuthorityItemJAXBSchema.SHORT_IDENTIFIER));
                        long status = syncRemoteItemWithLocalItem(ctx, remoteRefName);
                        if (status == 1) {
                                created++;
                        } else if (status == 0) {
                                synched++;
                        } else {
                                alreadySynched++;
                        }
                        totalItemsProcessed++;
                }
        }
        //
        // Now see if we need to deprecate or delete items that have been hard-deleted from the SAS but still exist
        // locally.  Subtract (remove) the list of remote items from the list of local items to determine which
        // of the remote items have been hard deleted.
        //
        ArrayList<String> itemsInLocalAuthority = getItemsInLocalAuthority(ctx, sasAuthoritySpecifier);
        itemsInLocalAuthority.removeAll(itemsInRemoteAuthority);
        if (itemsInLocalAuthority.size() > 0) {
                ArrayList<String> remainingItems = itemsInLocalAuthority; // now a subset of local items that no longer exist on the SAS, so we need to try to delete them (or mark them as deprecated if they still have records referencing them)
                //
                // We now need to either hard-deleted or deprecate the remaining authorities
                //
                long processed = deleteOrDeprecateItems(ctx, remainingItems);
                if (processed != remainingItems.size()) {
                        throw new Exception("Encountered unexpected exception trying to delete or deprecated authority items during synchronization.");
                }
        }
        //
        // We need to synchronize the hierarchy relationships
        //
        itemList = getItemList(sasPayloadInItemList); // Really need to re-request the sasPayload?  I don't think so.
        if (itemList != null) {
                for (Element e:itemList) {
                        String remoteRefName = XmlTools.getElementValue(e, "refName");
                        itemsInRemoteAuthority.add(remoteRefName);
                        long status = syncRemoteItemRelationshipsWithLocalItem(ctx, remoteRefName);
                        if (status == 1) {
                                created++;
                        } else if (status == 0) {
                                synched++;
                        } else {
                                alreadySynched++;
                        }
                        totalItemsProcessed++;
                }
        }       
        
        logger.info(String.format("Total number of items processed during sync: %d", totalItemsProcessed));
        logger.info(String.format("Number of items synchronized: %d", synched));
        logger.info(String.format("Number of items created during sync: %d", created));
        logger.info(String.format("Number not needing synchronization: %d", alreadySynched));

        return result;
    }

    /**
     * This method should only be used as part of a SAS synch operation.
     * @param ctx
     * @param refNameList
     * @return
     * @throws Exception
     */
    private long deleteOrDeprecateItems(ServiceContext ctx, ArrayList<String> refNameList) throws Exception {
        long result = 0;
        
        ctx.setProperty(AuthorityServiceUtils.SHOULD_UPDATE_REV_PROPERTY, false); // Don't update the revision number when we delete or deprecate the item
        for (String itemRefName:refNameList) {
                AuthorityTermInfo authorityTermInfo = RefNameUtils.parseAuthorityTermInfo(itemRefName);
            AuthorityItemSpecifier authorityItemSpecificer = new AuthorityItemSpecifier(SpecifierForm.URN_NAME, authorityTermInfo.inAuthority.name,
                        authorityTermInfo.name);
                        
                AuthorityResource authorityResource = (AuthorityResource) ctx.getResource();
                try {
                        authorityResource.deleteAuthorityItem(ctx,
                                        Specifier.createShortIdURNValue(authorityTermInfo.inAuthority.name),
                                        Specifier.createShortIdURNValue(authorityTermInfo.name),
                                        AuthorityServiceUtils.DONT_UPDATE_REV); // Since we're sync'ing, we shouldn't update the revision number (obviously this only applies to soft-deletes since hard-deletes destroy the record)
                        result++;
                } catch (DocumentReferenceException de) {
                        logger.info(String.format("Authority item '%s' has existing references and cannot be removed during sync.",
                                        itemRefName), de);
                        boolean marked = AuthorityServiceUtils.markAuthorityItemAsDeprecated(ctx, authorityItemCommonSchemaName,
                                        authorityItemSpecificer);
                        if (marked == true) {
                                result++;
                        }
                } catch (Exception e) {
                        logger.warn(String.format("Unable to delete authority item '%s'", itemRefName), e);
                        throw e;
                }
        }

        if (logger.isWarnEnabled() == true) {
                if (result != refNameList.size()) {
                        logger.warn(String.format("Unable to delete or deprecate some authority items during synchronization with SAS.  Deleted or deprecated %d of %d.  See the services log file for details.",
                                        result, refNameList.size()));
                }
        }
        
        return result;
    }
    
    /**
     * Gets the list of SAS related items in the local authority.  We exlude items with the "proposed" flags because
     * we want a list with only SAS created items.
     * 
     * We need to add pagination support to this call!!!
     * 
     * @param ctx
     * @param authoritySpecifier
     * @return
     * @throws Exception
     */
    private ArrayList<String> getItemsInLocalAuthority(ServiceContext ctx, Specifier authoritySpecifier) throws Exception {
        ArrayList<String> result = new ArrayList<String>();
        
        ResourceMap resourceMap = ctx.getResourceMap();
        String resourceName = ctx.getClient().getServiceName();
        AuthorityResource authorityResource = (AuthorityResource) resourceMap.get(resourceName);
        AbstractCommonList acl = authorityResource.getAuthorityItemList(ctx, authoritySpecifier.getURNValue(), ctx.getUriInfo());
        
        List<ListItem> listItemList = acl.getListItem();
        for (ListItem listItem:listItemList) {
                Boolean proposed = getBooleanValue(listItem, AuthorityItemJAXBSchema.PROPOSED);
                if (proposed == false) { // exclude "proposed" (i.e., local-only items)
                        result.add(AbstractCommonListUtils.ListItemGetElementValue(listItem, AuthorityItemJAXBSchema.SHORT_IDENTIFIER));
                }
        }
        
        return result;
    }
    
    private Boolean getBooleanValue(ListItem listItem, String name) {
        Boolean result = null;
        
                String value = AbstractCommonListUtils.ListItemGetElementValue(listItem, name);
                if (value != null) {
                        result = Boolean.valueOf(value);
                }
                
                return result;
    }
    
    private String getStringValue(ListItem listItem, String name) {
        return AbstractCommonListUtils.ListItemGetElementValue(listItem, AuthorityItemJAXBSchema.REF_NAME);
    }
    
    /**
     * This method should only be used during a SAS synchronization request.
     * 
     * @param ctx
     * @param parentIdentifier - Must be in short-id-refname form -i.e., urn:cspace:name(shortid)
     * @param itemIdentifier   - Must be in short-id-refname form -i.e., urn:cspace:name(shortid)
     * @throws Exception 
     */
    protected void createLocalItem(ServiceContext ctx, String parentIdentifier, String itemIdentifier) throws Exception {
        //
        // Create a URN short ID specifier for the getting a copy of the remote authority item
        //
        Specifier authoritySpecifier = Specifier.getSpecifier(parentIdentifier);
        Specifier itemSpecifier = Specifier.getSpecifier(itemIdentifier);
        AuthorityItemSpecifier sasAuthorityItemSpecifier = new AuthorityItemSpecifier(authoritySpecifier, itemSpecifier);
        //
        // Get the remote payload
        //
        PoxPayloadIn sasPayloadIn = AuthorityServiceUtils.requestPayloadIn(sasAuthorityItemSpecifier, 
                        ctx.getServiceName(), getEntityResponseType());
        sasPayloadIn = AuthorityServiceUtils.filterRefnameDomains(ctx, sasPayloadIn); // We need to filter domain name part of any and all refnames in the payload
        //
        // Using the payload from the remote server, create a local copy of the item
        //
        AuthorityResource authorityResource = (AuthorityResource) ctx.getResource();
        Response response = authorityResource.createAuthorityItemWithParentContext(ctx, authoritySpecifier.getURNValue(),
                        sasPayloadIn, AuthorityServiceUtils.DONT_UPDATE_REV, AuthorityServiceUtils.NOT_PROPOSED, AuthorityServiceUtils.SAS_ITEM);
        //
        // Check the response for successful POST result
        //
        if (response.getStatus() != Response.Status.CREATED.getStatusCode()) {
                throw new DocumentException(String.format("Could not create new authority item '%s' during synchronization of the '%s' authority.",
                                itemIdentifier, parentIdentifier));
        }
        //
        // Since we're creating an item that was sourced from the replication server, we need to replicate it locally.
        //
        authorityResource.updateItemWorkflowWithTransition(ctx, parentIdentifier, itemIdentifier, 
                        WorkflowClient.WORKFLOWTRANSITION_REPLICATE, AuthorityServiceUtils.DONT_UPDATE_REV); // don't update the rev number of the new replicated item (use the rev number of the sourced item)
        }
    
    /**
     * Try to synchronize a remote item (using its refName) with a local item.  If the local doesn't yet
     * exist, we'll create it.
     * Result values:
     *  -1 = sync not needed; i.e., already in sync
     *   0 = sync succeeded
     *   1 = local item was missing so we created it
     * @param ctx
     * @param refName
     * @return
     * @throws Exception
     */
    protected long syncRemoteItemWithLocalItem(ServiceContext ctx, String itemRefName) throws Exception {
        long result = -1;
        //
        // Using the item refname (with no local CSID), create specifiers that we'll use to find the local versions
        //
        AuthorityTermInfo authorityTermInfo = RefNameUtils.parseAuthorityTermInfo(itemRefName);
        String parentIdentifier = Specifier.createShortIdURNValue(authorityTermInfo.inAuthority.name);
        String itemIdentifier = Specifier.createShortIdURNValue(authorityTermInfo.name);
        //
        // We'll use the Authority JAX-RS resource to peform sync operations (creates and updates)
        //
        AuthorityResource authorityResource = (AuthorityResource) ctx.getResource();            
        PoxPayloadOut localItemPayloadOut;
        try {
                localItemPayloadOut = authorityResource.getAuthorityItemWithExistingContext(ctx, parentIdentifier, itemIdentifier);
        } catch (DocumentNotFoundException dnf) {
                //
                // Document not found, means we need to create an item/term that exists only on the SAS
                //
                logger.info(String.format("Remote item with refname='%s' doesn't exist locally, so we'll create it.", itemRefName));
                createLocalItem(ctx, parentIdentifier, itemIdentifier);
                return 1; // exit with status of 1 means we created a new authority item
        }
        //
        // If we get here, we know the item exists both locally and remotely, so we need to synchronize them.
        //
        //
        try {
                PoxPayloadOut theUpdate = authorityResource.synchronizeItemWithExistingContext(ctx, parentIdentifier, itemIdentifier);
                if (theUpdate != null) {
                        result = 0; // means we needed to sync this item with SAS
                        logger.debug(String.format("Sync'd authority item parent='%s' id='%s with SAS.  Updated payload is: \n%s",
                                        parentIdentifier, itemIdentifier, theUpdate.getXmlPayload()));
                }
        } catch (DocumentReferenceException de) { // Exception for items that still have records/resource referencing them.
                result = -1;
                logger.error(String.format("Could not sync authority item = '%s' because it has existing records referencing it.",
                                itemIdentifier));
        }
        
        return result; // -1 = no sync needed/possible, 0 = sync'd, 1 = created new item
    }
    
    /**
     * Ensure the local items relationships look the same as the remote items' by synchronizing the hierarchy relationship records
     * of the SAS item with the local item.
     * 
     * @param ctx
     * @param refName
     * @return
     * @throws Exception
     */
    protected long syncRemoteItemRelationshipsWithLocalItem(ServiceContext ctx, String itemRefName) throws Exception {
        long result = -1;
        //
        // WARNING: THIS CODE IS NOT IMPLEMENTED YET
        //
        return result;
        //
        // Using the item refname (with no local CSID), create specifiers that we'll use to find the local versions
        //
        
        /*
        AuthorityTermInfo authorityTermInfo = RefNameUtils.parseAuthorityTermInfo(itemRefName);
        String parentIdentifier = Specifier.createShortIdURNValue(authorityTermInfo.inAuthority.name);
        String itemIdentifier = Specifier.createShortIdURNValue(authorityTermInfo.name);
        //
        // We'll use the Authority JAX-RS resource to peform sync operations (creates and updates)
        //
        AuthorityResource authorityResource = (AuthorityResource) ctx.getResource();            
        PoxPayloadOut localItemPayloadOut;
        try {
                localItemPayloadOut = authorityResource.getAuthorityItemWithExistingContext(ctx, parentIdentifier, itemIdentifier);
        } catch (DocumentNotFoundException dnf) {
                //
                // Document not found, means we need to create an item/term that exists only on the SAS
                //
                logger.info(String.format("Remote item with refname='%s' doesn't exist locally, so we'll create it.", itemRefName));
                createLocalItem(ctx, parentIdentifier, itemIdentifier);
                return 1; // exit with status of 1 means we created a new authority item
        }
        //
        // If we get here, we know the item exists both locally and remotely, so we need to synchronize them.
        //
        //
        try {
                PoxPayloadOut theUpdate = authorityResource.synchronizeItemWithExistingContext(ctx, parentIdentifier, itemIdentifier);
                if (theUpdate != null) {
                        result = 0; // means we needed to sync this item with SAS
                        logger.debug(String.format("Sync'd authority item parent='%s' id='%s with SAS.  Updated payload is: \n%s",
                                        parentIdentifier, itemIdentifier, theUpdate.getXmlPayload()));
                }
        } catch (DocumentReferenceException de) { // Exception for items that still have records/resource referencing them.
                result = -1;
                logger.error(String.format("Could not sync authority item = '%s' because it has existing records referencing it.",
                                itemIdentifier));
        }
        
        return result; // -1 = no sync needed/possible, 0 = sync'd, 1 = created new item
        */
        
    }    
    
    /**
     * Request an authority item list payload from the SAS server.
     * 
     * @param ctx
     * @param specifier
     * @return
     * @throws Exception
     */
    private PoxPayloadIn requestPayloadInItemList(ServiceContext ctx, Specifier specifier) throws Exception {
        PoxPayloadIn result = null;
        
        AuthorityClient client = (AuthorityClient) ctx.getClient();
        Response res = client.readItemList(specifier.getURNValue(),
                        null,   // partial term string
                        null    // keyword string
                        );
        try {
                int statusCode = res.getStatus();
        
                // Check the status code of the response: does it match
                // the expected response(s)?
                if (logger.isDebugEnabled()) {
                    logger.debug(client.getClass().getCanonicalName() + ": status = " + statusCode);
                }
                
            result = new PoxPayloadIn((String)res.readEntity(getEntityResponseType())); // Get the entire response!             
        } finally {
                res.close();
        }
        
        return result;
    }
    

    /*
     * Non standard injection of CSID into common part, since caller may access through
     * shortId, and not know the CSID.
     * @see org.collectionspace.services.nuxeo.client.java.RemoteDocumentModelHandlerImpl#extractPart(org.nuxeo.ecm.core.api.DocumentModel, java.lang.String, org.collectionspace.services.common.service.ObjectPartType)
     */
    @Override
    protected Map<String, Object> extractPart(DocumentModel docModel, String schema, ObjectPartType partMeta)
            throws Exception {
        Map<String, Object> unQObjectProperties = super.extractPart(docModel, schema, partMeta);

        // Add the CSID to the common part
        if (partMeta.getLabel().equalsIgnoreCase(authorityCommonSchemaName)) {
            String csid = getCsid(docModel);//NuxeoUtils.extractId(docModel.getPathAsString());
            unQObjectProperties.put("csid", csid);
        }

        return unQObjectProperties;
    }
    
    public void fillAllParts(DocumentWrapper<DocumentModel> wrapDoc, Action action) throws Exception {
        super.fillAllParts(wrapDoc, action);
        //
        // Update the record's revision number on both CREATE and UPDATE actions, but not on SYNC
        //
        if (this.getShouldUpdateRevNumber() == true) { // We won't update rev numbers on synchronization with SAS
                updateRevNumbers(wrapDoc);
        }
    }
    
    protected void updateRevNumbers(DocumentWrapper<DocumentModel> wrapDoc) {
        DocumentModel documentModel = wrapDoc.getWrappedObject();
        Long rev = (Long)documentModel.getProperty(authorityCommonSchemaName, AuthorityJAXBSchema.REV);
        if (rev == null) {
                rev = (long)0;
        } else {
                rev++;
        }
        documentModel.setProperty(authorityCommonSchemaName, AuthorityJAXBSchema.REV, rev);
    }
    
    /*
     * We consider workflow state changes as changes that should bump the revision number
     * (non-Javadoc)
     * @see org.collectionspace.services.nuxeo.client.java.RemoteDocumentModelHandlerImpl#handleWorkflowTransition(org.collectionspace.services.common.document.DocumentWrapper, org.collectionspace.services.lifecycle.TransitionDef)
     */
    @Override
    public void handleWorkflowTransition(ServiceContext ctx, DocumentWrapper<DocumentModel> wrapDoc, TransitionDef transitionDef) throws Exception {
        if (this.getShouldUpdateRevNumber() == true) { // We don't update the rev number of synchronization requests
                updateRevNumbers(wrapDoc);
        }
    }
    
    @Override
    public void handleCreate(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
        super.handleCreate(wrapDoc);
        // CSPACE-3178:
        // Uncomment once debugged and App layer is read to integrate
        // Experimenting with this uncommented now ...
        handleDisplayNameAsShortIdentifier(wrapDoc.getWrappedObject(), authorityCommonSchemaName);
        updateRefnameForAuthority(wrapDoc, authorityCommonSchemaName);//CSPACE-3178
    }
    
    protected String buildWhereForShortId(String name) {
        return authorityCommonSchemaName
                + ":" + AuthorityJAXBSchema.SHORT_IDENTIFIER
                + "='" + name + "'";
    }
    
    private boolean isUnique(DocumentModel docModel, String schemaName) throws DocumentException {
        return true;
    }
    
    private boolean temp_isUnique(DocumentModel docModel, String schemaName) throws DocumentException {
        boolean result = true;
        
        ServiceContext ctx = this.getServiceContext();
        String shortIdentifier = (String) docModel.getProperty(schemaName, AuthorityJAXBSchema.SHORT_IDENTIFIER);
        String nxqlWhereClause = buildWhereForShortId(shortIdentifier);
        try {
                        DocumentWrapper<DocumentModel> searchResultWrapper = getRepositoryClient(ctx).findDoc(ctx, nxqlWhereClause);
                        if (searchResultWrapper != null) {
                                result = false;
                                if (logger.isInfoEnabled() == true) {
                                        DocumentModel searchResult = searchResultWrapper.getWrappedObject();
                                        String debugMsg = String.format("Could not create a new authority with a short identifier of '%s', because one already exists with the same short identifer: CSID = '%s'",
                                                        shortIdentifier, searchResult.getName());
                                        logger.trace(debugMsg);
                                }
                        }
                } catch (DocumentNotFoundException e) {
                        // Not a problem, just means we couldn't find another authority with that short ID
                }
        
        return result;
    }

    /**
     * If no short identifier was provided in the input payload,
     * generate a short identifier from the display name. Either way though,
     * the short identifier needs to be unique.
     */
    private void handleDisplayNameAsShortIdentifier(DocumentModel docModel, String schemaName) throws Exception {
        String shortIdentifier = (String) docModel.getProperty(schemaName, AuthorityJAXBSchema.SHORT_IDENTIFIER);
        String displayName = (String) docModel.getProperty(schemaName, AuthorityJAXBSchema.DISPLAY_NAME);
        String shortDisplayName = "";
        String generateShortIdentifier = null;
        if (Tools.isEmpty(shortIdentifier)) {
                generateShortIdentifier = AuthorityIdentifierUtils.generateShortIdentifierFromDisplayName(displayName, shortDisplayName);
            docModel.setProperty(schemaName, AuthorityJAXBSchema.SHORT_IDENTIFIER, shortIdentifier);
        }
        
        if (isUnique(docModel, schemaName) == false) {
                String shortId = generateShortIdentifier == null ? shortIdentifier : generateShortIdentifier;
                String errMsgVerb = generateShortIdentifier == null ? "supplied" : "generated";
                String errMsg = String.format("The %s short identifier '%s' was not unique, so the new authority could not be created.",
                                errMsgVerb, shortId);
                throw new DocumentException(errMsg);
        }
    }
 
    /**
     * Generate a refName for the authority from the short identifier
     * and display name.
     * 
     * All refNames for authorities are generated.  If a client supplies
     * a refName, it will be overwritten during create (per this method) 
     * or discarded during update (per filterReadOnlyPropertiesForPart).
     * 
     * @see #filterReadOnlyPropertiesForPart(Map<String, Object>, org.collectionspace.services.common.service.ObjectPartType)
     * 
     */
    protected void updateRefnameForAuthority(DocumentWrapper<DocumentModel> wrapDoc, String schemaName) throws Exception {
        DocumentModel docModel = wrapDoc.getWrappedObject();
        RefName.Authority authority = (Authority) getRefName(getServiceContext(), docModel);
        String refName = authority.toString();
        docModel.setProperty(schemaName, AuthorityJAXBSchema.REF_NAME, refName);
    }
    
    @Override
    public RefName.RefNameInterface getRefName(ServiceContext ctx,
                DocumentModel docModel) {
        RefName.RefNameInterface refname = null;

        try {
                String shortIdentifier = (String) docModel.getProperty(authorityCommonSchemaName, AuthorityJAXBSchema.SHORT_IDENTIFIER);
                String displayName = (String) docModel.getProperty(authorityCommonSchemaName, AuthorityJAXBSchema.DISPLAY_NAME);
                RefName.Authority authority = RefName.Authority.buildAuthority(ctx.getTenantName(),
                        ctx.getServiceName(),
                        null,   // Only use shortId form!!!
                        shortIdentifier,
                        displayName);
                refname = authority;
        } catch (Exception e) {
                logger.error(e.getMessage(), e);
        }
        
        return refname;
    }
    
    @Override
    protected String getRefnameDisplayName(DocumentWrapper<DocumentModel> docWrapper) {
        String result = null;
        
        DocumentModel docModel = docWrapper.getWrappedObject();
        ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
        RefName.Authority refname = (RefName.Authority)getRefName(ctx, docModel);
        result = refname.getDisplayName();
        
        return result;
    }    
    
    public String getShortIdentifier(ServiceContext ctx, String authCSID, String schemaName) throws Exception {
        String shortIdentifier = null;
        CoreSessionInterface repoSession = null;
        boolean releaseSession = false;

        RepositoryClientImpl nuxeoRepoClient = (RepositoryClientImpl)this.getRepositoryClient(ctx);
        try {
                repoSession = nuxeoRepoClient.getRepositorySession(ctx);
            DocumentWrapper<DocumentModel> wrapDoc = nuxeoRepoClient.getDocFromCsid(ctx, repoSession, authCSID);
            DocumentModel docModel = wrapDoc.getWrappedObject();
            if (docModel == null) {
                throw new DocumentNotFoundException(String.format("Could not find authority resource with CSID='%s'.", authCSID));
            }
            shortIdentifier = (String) docModel.getProperty(schemaName, AuthorityJAXBSchema.SHORT_IDENTIFIER);
        } catch (ClientException ce) {
            throw new RuntimeException("AuthorityDocHandler Internal Error: cannot get shortId!", ce);
        } finally {
                if (repoSession != null) {
                        nuxeoRepoClient.releaseRepositorySession(ctx, repoSession);
                }
        }
        
        return shortIdentifier;
    }

    /**
     * Filters out selected values supplied in an update request.
     * 
     * @param objectProps the properties filtered out from the update payload
     * @param partMeta metadata for the object to fill
     */
    @Override
    public void filterReadOnlyPropertiesForPart(
            Map<String, Object> objectProps, ObjectPartType partMeta) {
        super.filterReadOnlyPropertiesForPart(objectProps, partMeta);
        String commonPartLabel = getServiceContext().getCommonPartLabel();
        if (partMeta.getLabel().equalsIgnoreCase(commonPartLabel)) {
            objectProps.remove(AuthorityJAXBSchema.CSID);
            objectProps.remove(AuthorityJAXBSchema.SHORT_IDENTIFIER);
            objectProps.remove(AuthorityJAXBSchema.REF_NAME);
        }
    }    
}