本文整理了Java中org.apache.commons.collections4.CollectionUtils.subtract()方法的一些代码示例，展示了CollectionUtils.subtract()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。CollectionUtils.subtract()方法的具体详情如下：
包路径：org.apache.commons.collections4.CollectionUtils
类名称：CollectionUtils
方法名：subtract

CollectionUtils.subtract介绍

[英]Returns a new Collection containing a - b. The cardinality of each element e in the returned Collectionwill be the cardinality of e in a minus the cardinality of e in b, or zero, whichever is greater.
[中]返回一个包含a-b的新集合。返回集合中每个元素e的基数将是a中e的基数减去b中e的基数，或零，以较大者为准。

代码示例

代码示例来源：origin: gocd/gocd

private void scheduleRecentlyAddedMaterialsForUpdate() {
  Collection<Material> materialsBeforeConfigChange = dependencyMaterials.values();
  this.dependencyMaterials = dependencyMaterials();
  Collection<Material> materialsAfterConfigChange = dependencyMaterials.values();
  Collection newMaterials = CollectionUtils.subtract(materialsAfterConfigChange, materialsBeforeConfigChange);
  for (Object material : newMaterials) {
    updateMaterial((Material) material);
  }
}

代码示例来源：origin: org.apache.commons/commons-collections4

/**
 * Returns a new {@link Collection} containing {@code <i>a</i> - <i>b</i>}.
 * The cardinality of each element <i>e</i> in the returned {@link Collection}
 * will be the cardinality of <i>e</i> in <i>a</i> minus the cardinality
 * of <i>e</i> in <i>b</i>, or zero, whichever is greater.
 *
 * @param a  the collection to subtract from, must not be null
 * @param b  the collection to subtract, must not be null
 * @param <O> the generic type that is able to represent the types contained
 *        in both input collections.
 * @return a new collection with the results
 * @see Collection#removeAll
 */
public static <O> Collection<O> subtract(final Iterable<? extends O> a, final Iterable<? extends O> b) {
  final Predicate<O> p = TruePredicate.truePredicate();
  return subtract(a, b, p);
}

代码示例来源：origin: gocd/gocd

public boolean shouldBeIgnoredByFilterIn(MaterialConfig materialConfig) {
  if (materialConfig.filter().shouldNeverIgnore()) {
    return false;
  }
  Set<ModifiedFile> allFiles = getAllFiles(this);
  Set<ModifiedFile> ignoredFiles = new HashSet<>();
  for (ModifiedFile file : allFiles) {
    appyIgnoreFilter(materialConfig, file, ignoredFiles);
  }
  LOG.debug("Checking ignore filters for {}", materialConfig);
  LOG.debug("Ignored files: {}", ignoredFiles);
  LOG.debug("Changed files: {}", CollectionUtils.subtract(allFiles, ignoredFiles));
  if (materialConfig.isInvertFilter()) {
    // return true (ignore) if we are inverting the filter, and the ignoredFiles and allFiles are disjoint sets
    return Collections.disjoint(allFiles, ignoredFiles);
  } else {
    return ignoredFiles.containsAll(allFiles);
  }
}

代码示例来源：origin: org.apache.bookkeeper/bookkeeper-server

@SuppressWarnings("unchecked")
public Collection<BookieSocketAddress> getPartialScanTargets() {
  return CollectionUtils.subtract(mostRecentlyReportedBookies, infoMap.keySet());
}

代码示例来源：origin: Evolveum/midpoint

private AccessCertificationResponseType extractStageOutcome(Set<AccessCertificationResponseType> stageOutcomes, Long caseId, int stage) {
    Collection<AccessCertificationResponseType> nonNullOutcomes = CollectionUtils.subtract(stageOutcomes, singleton(NO_RESPONSE));
    if (nonNullOutcomes.size() > 1) {
      throw new IllegalStateException("Contradictory outcomes for case " + caseId + " in stage " + stage + ": " + stageOutcomes);
    } else if (!nonNullOutcomes.isEmpty()) {
      return nonNullOutcomes.iterator().next();
    } else if (!stageOutcomes.isEmpty()) {
      return NO_RESPONSE;
    } else {
      return null;
    }
  }
}

代码示例来源：origin: com.github.wenweihu86.rpc/rpc-java

public void updateEndPoints(List<EndPoint> newEndPoints) {
  Collection<EndPoint> addList = CollectionUtils.subtract(newEndPoints, endPoints);
  Collection<EndPoint> deleteList = CollectionUtils.subtract(endPoints, newEndPoints);
  for (EndPoint endPoint : addList) {
    addEndPoint(endPoint);
  }
  for (EndPoint endPoint : deleteList) {
    deleteEndPoint(endPoint);
  }
}

代码示例来源：origin: com.baidu/brpc-java

public void updateEndPoints(List<EndPoint> newEndPoints) {
  Collection<EndPoint> addList = CollectionUtils.subtract(newEndPoints, endPoints);
  Collection<EndPoint> deleteList = CollectionUtils.subtract(endPoints, newEndPoints);
  for (EndPoint endPoint : addList) {
    addEndPoint(endPoint);
  }
  for (EndPoint endPoint : deleteList) {
    deleteEndPoint(endPoint);
  }
}

代码示例来源：origin: com.baidu/brpc-java

@Override
  public void run(Timeout timeout) throws Exception {
    try {
      List<EndPoint> currentEndPoints = lookup(null);
      Collection<EndPoint> addList = CollectionUtils.subtract(
          currentEndPoints, lastEndPoints);
      Collection<EndPoint> deleteList = CollectionUtils.subtract(
          lastEndPoints, currentEndPoints);
      listener.notify(addList, deleteList);
    } catch (Exception ex) {
      // ignore exception
    }
    namingServiceTimer.newTimeout(this, updateInterval, TimeUnit.MILLISECONDS);
  }
},

代码示例来源：origin: baidu/brpc-java

@Override
  public void run(Timeout timeout) throws Exception {
    try {
      List<EndPoint> currentEndPoints = lookup(null);
      Collection<EndPoint> addList = CollectionUtils.subtract(
          currentEndPoints, lastEndPoints);
      Collection<EndPoint> deleteList = CollectionUtils.subtract(
          lastEndPoints, currentEndPoints);
      listener.notify(addList, deleteList);
    } catch (Exception ex) {
      // ignore exception
    }
    namingServiceTimer.newTimeout(this, updateInterval, TimeUnit.MILLISECONDS);
  }
},

代码示例来源：origin: org.ligoj.plugin/plugin-id-ldap

@Override
public void updateMembership(final Collection<String> groups, final UserOrg user) {
  // Add new groups
  addUserToGroups(user, CollectionUtils.subtract(groups, user.getGroups()));
  // Remove old groups
  removeUserFromGroups(user, CollectionUtils.subtract(user.getGroups(), groups));
}

代码示例来源：origin: ontopia/ontopia

public void setScope(ScopedIF scoped, Collection<Topic> scope) {
  if (scope != null) {
    Collection<TopicIF> newScope = new HashSet<>(scope.size());
    for (Topic t : scope) {
      TopicIF resolved = topic.resolve(scoped.getTopicMap(), t);
      newScope.add(resolved);
      scoped.addTheme(resolved);
    }
    
    for (TopicIF remove : CollectionUtils.subtract(scoped.getScope(), newScope)) {
      scoped.removeTheme(remove);
    }
  }
}

代码示例来源：origin: Nepxion/Thunder

private void consistBatch(String interfaze, List<ApplicationEntity> remoteList) throws Exception {
  List<ApplicationEntity> localList = cacheContainer.getConnectionCacheEntity().getApplicationEntityList(interfaze);
  if (!CollectionUtils.isEqualCollection(localList, remoteList)) {
    List<ApplicationEntity> intersectedList = (List<ApplicationEntity>) CollectionUtils.intersection(localList, remoteList);
    List<ApplicationEntity> onlineList = (List<ApplicationEntity>) CollectionUtils.subtract(remoteList, intersectedList);
    List<ApplicationEntity> offlineList = (List<ApplicationEntity>) CollectionUtils.subtract(localList, intersectedList);
    consistBatchClient(interfaze, onlineList, true);
    consistBatchClient(interfaze, offlineList, false);
  }
}

代码示例来源：origin: ontopia/ontopia

public void setTypes(TopicIF object, Topic pojo) {
  if (pojo.getTypes() != null) {
    Collection<TopicIF> newTypes = new HashSet<>(pojo.getTypes().size());
    for (Topic t : pojo.getTypes()) {
      TopicIF resolved = resolve(object.getTopicMap(), t);
      newTypes.add(resolved);
    }
    
    for (TopicIF remove : CollectionUtils.subtract(object.getTypes(), newTypes)) {
      object.removeType(remove);
    }
    
    for (TopicIF add : newTypes) {
      object.addType(add);
    }
  }
}

代码示例来源：origin: info.magnolia.ui/magnolia-ui-api

@SuppressWarnings("unchecked")
@Override
public Set<DefinitionMetadata> unregisterAndRegister(Collection<DefinitionMetadata> metaDataToUnregister, Collection<DefinitionProvider<AppDescriptor>> providersToRegister) {
  Collection<DefinitionMetadata> metadataBefore = getRegistryMap().keySet();
  Collection<DefinitionProvider<AppDescriptor>> providersBefore = getRegistryMap().values();
  Set<DefinitionMetadata> registeredMetaData = super.unregisterAndRegister(metaDataToUnregister, providersToRegister);
  Collection<DefinitionMetadata> metadataAfter = getRegistryMap().keySet();
  Collection<DefinitionMetadata> added = CollectionUtils.subtract(metadataAfter, metadataBefore);
  Collection<DefinitionMetadata> removed = CollectionUtils.subtract(metadataBefore, metadataAfter);
  Collection<DefinitionMetadata> kept = CollectionUtils.subtract(metadataBefore, removed);
  Collection<DefinitionMetadata> changed = getAppsThatHaveChanged(kept, providersBefore, providersToRegister);
  sendEvent(AppRegistryEventType.REGISTERED, added);
  sendEvent(AppRegistryEventType.UNREGISTERED, removed);
  sendEvent(AppRegistryEventType.REREGISTERED, changed);
  return registeredMetaData;
}

代码示例来源：origin: org.opensingular/singular-requirement-commons

public DocumentationMetadataBuilder(SType<?> rootStype) {
  initTypeByNameCache(rootStype);
  tableRoots = identifyTablesRoots(rootStype);
  LinkedHashSet<SType<?>> tableRootsSTypes = tableRoots.stream().flatMap(d -> d.getRootSTypes().stream()).collect(LinkedHashSet::new, LinkedHashSet::add, LinkedHashSet::addAll);
  for (DocTable docTable : tableRoots) {
    LinkedHashSet<DocBlock> docBlocks = identifyBlocks(docTable.getRootSTypes(), tableRootsSTypes);
    docTable.addAllDocBlocks(docBlocks);
    LinkedHashSet<SType<?>> allTypesAssociatedToBlocks = gatherAllSTypesAssociatedToBlocks(docBlocks);
    allTypesAssociatedToBlocks.addAll(tableRootsSTypes);
    for (DocBlock docBlock : docBlocks) {
      LinkedHashSet<DocFieldMetadata> docFieldMetadata = identifyFields(rootStype, docBlock, CollectionUtils.subtract(allTypesAssociatedToBlocks, docBlock.getBlockTypes()));
      docBlock.addAllFieldsMetadata(docFieldMetadata);
    }
  }
}

代码示例来源：origin: org.opensingular/singular-requirement-module

public DocumentationMetadataBuilder(SType<?> rootStype) {
  initTypeByNameCache(rootStype);
  tableRoots = identifyTablesRoots(rootStype);
  LinkedHashSet<SType<?>> tableRootsSTypes = tableRoots.stream().flatMap(d -> d.getRootSTypes().stream()).collect(LinkedHashSet::new, LinkedHashSet::add, LinkedHashSet::addAll);
  for (DocTable docTable : tableRoots) {
    LinkedHashSet<DocBlock> docBlocks = identifyBlocks(docTable.getRootSTypes(), tableRootsSTypes);
    docTable.addAllDocBlocks(docBlocks);
    LinkedHashSet<SType<?>> allTypesAssociatedToBlocks = gatherAllSTypesAssociatedToBlocks(docBlocks);
    allTypesAssociatedToBlocks.addAll(tableRootsSTypes);
    for (DocBlock docBlock : docBlocks) {
      LinkedHashSet<DocFieldMetadata> docFieldMetadata = identifyFields(rootStype, docBlock, CollectionUtils.subtract(allTypesAssociatedToBlocks, docBlock.getBlockTypes()));
      docBlock.addAllFieldsMetadata(docFieldMetadata);
    }
  }
}

代码示例来源：origin: org.opensingular/singular-server-commons

public DocumentationMetadataBuilder(SType<?> rootStype) {
  initTypeByNameCache(rootStype);
  tableRoots = identifyTablesRoots(rootStype);
  LinkedHashSet<SType<?>> tableRootsSTypes = tableRoots.stream().flatMap(d -> d.getRootSTypes().stream()).collect(LinkedHashSet::new, LinkedHashSet::add, LinkedHashSet::addAll);
  for (DocTable docTable : tableRoots) {
    LinkedHashSet<DocBlock> docBlocks = identifyBlocks(docTable.getRootSTypes(), tableRootsSTypes);
    docTable.addAllDocBlocks(docBlocks);
    LinkedHashSet<SType<?>> allTypesAssociatedToBlocks = gatherAllSTypesAssociatedToBlocks(docBlocks);
    allTypesAssociatedToBlocks.addAll(tableRootsSTypes);
    for (DocBlock docBlock : docBlocks) {
      LinkedHashSet<DocFieldMetadata> docFieldMetadata = identifyFields(rootStype, docBlock, CollectionUtils.subtract(allTypesAssociatedToBlocks, docBlock.getBlockTypes()));
      docBlock.addAllFieldsMetadata(docFieldMetadata);
    }
  }
}

代码示例来源：origin: ontopia/ontopia

public void setSubjectLocators(TopicIF object, Topic pojo) {
  if (pojo.getSubjectLocators() != null) {
    Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getSubjectLocators(), pojo.getSubjectLocators());
    for (LocatorIF sl : pojo.getSubjectLocators()) {
      object.addSubjectLocator(sl);
    }
    for (LocatorIF sl : toRemove) {
      object.removeSubjectLocator(sl);
    }
  }
}

代码示例来源：origin: ontopia/ontopia

public void setItemIdentifiers(TMObjectIF object, TMObject pojo) {
  if (pojo.getItemIdentifiers() != null) {
    Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getItemIdentifiers(), pojo.getItemIdentifiers());
    for (LocatorIF ii : pojo.getItemIdentifiers()) {
      object.addItemIdentifier(ii);
    }
    for (LocatorIF ii : toRemove) {
      object.removeItemIdentifier(ii);
    }
  }
}

代码示例来源：origin: ontopia/ontopia

public void setSubjectIdentifiers(TopicIF object, Topic pojo) {
  if (pojo.getSubjectIdentifiers() != null) {
    Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getSubjectIdentifiers(), pojo.getSubjectIdentifiers());
    for (LocatorIF si : pojo.getSubjectIdentifiers()) {
      object.addSubjectIdentifier(si);
    }
    for (LocatorIF si : toRemove) {
      object.removeSubjectIdentifier(si);
    }
  }
}