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   1 package org.collectionspace.services.listener;
   2
   3 import java.io.Serializable;
   4 import org.apache.commons.logging.Log;
   5 import org.apache.commons.logging.LogFactory;
   6 import org.collectionspace.services.common.api.RefNameUtils;
   7 import org.collectionspace.services.common.api.Tools;
   8 import org.nuxeo.ecm.core.api.ClientException;
   9 import org.nuxeo.ecm.core.api.DocumentModel;
  10
  11 public class UpdateObjectLocationAndCrateOnMove extends UpdateObjectLocationOnMove {
  12
  13     // FIXME: We might experiment here with using log4j instead of Apache Commons Logging;
  14     // am using the latter to follow Ray's pattern for now
  15     private final Log logger = LogFactory.getLog(UpdateObjectLocationAndCrateOnMove.class);
  16     // FIXME: Get values below from external constants
  17     private final static String COLLECTIONOBJECTS_ANTHROPOLOGY_SCHEMA = "collectionobjects_anthropology";
  18     private final static String MOVEMENTS_ANTHROPOLOGY_SCHEMA = "movements_anthropology";
  19     private final static String CRATE_PROPERTY = "crate";
  20     private final static String COMPUTED_CRATE_PROPERTY = "computedCrate";
  21
  22     @Override
  23     protected boolean updateCollectionObjectLocation(DocumentModel collectionObjectDocModel,
  24             DocumentModel movementDocModel,
  25             String mostRecentLocation) throws ClientException {
  26         boolean flag = super.updateCollectionObjectLocation(collectionObjectDocModel, movementDocModel, mostRecentLocation);
  27         collectionObjectDocModel = updateComputedCrateValue(collectionObjectDocModel, movementDocModel);
  28
  29         return flag;
  30     }
  31
  32     private DocumentModel updateComputedCrateValue(DocumentModel collectionObjectDocModel,
  33             DocumentModel movementDocModel)
  34             throws ClientException {
  35
  36         // Get the current crate value from the Movement (the "new" value)
  37         String crateRefName =
  38                 (String) movementDocModel.getProperty(MOVEMENTS_ANTHROPOLOGY_SCHEMA, CRATE_PROPERTY);
  39
  40         // Check that the value returned, which is expected to be a
  41         // reference (refName) to an authority term:
  42         //
  43         // * If it is not blank ...
  44         // * Is then capable of being successfully parsed by an authority item parser.
  45         if (Tools.notBlank(crateRefName)
  46                 && RefNameUtils.parseAuthorityTermInfo(crateRefName) == null) {
  47             logger.warn("Could not parse crate refName '" + crateRefName + "'");
  48             return collectionObjectDocModel;
  49         } else {
  50             if (logger.isTraceEnabled()) {
  51                 logger.trace("crate refName passes basic validation tests.");
  52                 logger.trace("crate refName=" + crateRefName);
  53             }
  54         }
  55         // Get the computed crate value of the CollectionObject
  56         // (the "existing" value)
  57         String existingCrateRefName =
  58                 (String) collectionObjectDocModel.getProperty(COLLECTIONOBJECTS_ANTHROPOLOGY_SCHEMA,
  59                 COMPUTED_CRATE_PROPERTY);
  60         if (logger.isTraceEnabled()) {
  61             logger.trace("Existing crate refName=" + existingCrateRefName);
  62         }
  63
  64         // If the new value is blank, any non-blank existing value should always
  65         // be overwritten ('nulled out') with a blank value.
  66         if (Tools.isBlank(crateRefName) && Tools.notBlank(existingCrateRefName)) {
  67             collectionObjectDocModel.setProperty(COLLECTIONOBJECTS_ANTHROPOLOGY_SCHEMA,
  68                     COMPUTED_CRATE_PROPERTY, (Serializable) null);
  69             // Otherwise, if the new value is not blank, and
  70             // * the existing value is blank, or
  71             // * the new value is different than the existing value ...
  72         } else if (Tools.notBlank(crateRefName) &&
  73                     (Tools.isBlank(existingCrateRefName)
  74                     || !crateRefName.equals(existingCrateRefName))) {
  75             if (logger.isTraceEnabled()) {
  76                 logger.trace("crate refName requires updating.");
  77             }
  78             // ... update the existing value in the CollectionObject with the
  79             // new value from the Movement.
  80             collectionObjectDocModel.setProperty(COLLECTIONOBJECTS_ANTHROPOLOGY_SCHEMA,
  81                     COMPUTED_CRATE_PROPERTY, crateRefName);
  82         } else {
  83             if (logger.isTraceEnabled()) {
  84                 logger.trace("crate refName does NOT require updating.");
  85             }
  86         }
  87
  88         return collectionObjectDocModel;
  89     }
  90 }