Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * 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.apache.syncope.common.util; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.lang3.SerializationUtils; import org.apache.syncope.common.mod.AbstractAttributableMod; import org.apache.syncope.common.mod.AbstractSubjectMod; import org.apache.syncope.common.mod.AttributeMod; import org.apache.syncope.common.mod.MembershipMod; import org.apache.syncope.common.mod.ReferenceMod; import org.apache.syncope.common.mod.RoleMod; import org.apache.syncope.common.mod.UserMod; import org.apache.syncope.common.to.AbstractAttributableTO; import org.apache.syncope.common.to.AbstractSubjectTO; import org.apache.syncope.common.to.AttributeTO; import org.apache.syncope.common.to.MembershipTO; import org.apache.syncope.common.to.RoleTO; import org.apache.syncope.common.to.UserTO; /** * Utility class for manipulating classes extending AbstractAttributableTO and AbstractAttributableMod. * * @see AbstractAttributableTO * @see AbstractAttributableMod */ public final class AttributableOperations { private AttributableOperations() { // empty constructor for static utility classes } private static void populate(final Map<String, AttributeTO> updatedAttrs, final Map<String, AttributeTO> originalAttrs, final AbstractAttributableMod result) { populate(updatedAttrs, originalAttrs, result, false); } private static void populate(final Map<String, AttributeTO> updatedAttrs, final Map<String, AttributeTO> originalAttrs, final AbstractAttributableMod result, final boolean virtuals) { for (Map.Entry<String, AttributeTO> entry : updatedAttrs.entrySet()) { AttributeMod mod = new AttributeMod(); mod.setSchema(entry.getKey()); Set<String> updatedValues = new HashSet<String>(entry.getValue().getValues()); Set<String> originalValues = originalAttrs.containsKey(entry.getKey()) ? new HashSet<String>(originalAttrs.get(entry.getKey()).getValues()) : Collections.<String>emptySet(); if (!originalAttrs.containsKey(entry.getKey())) { // SYNCOPE-459: take care of user virtual attributes without any value updatedValues.remove(""); mod.getValuesToBeAdded().addAll(new ArrayList<String>(updatedValues)); if (virtuals) { result.getVirAttrsToUpdate().add(mod); } else { result.getAttrsToUpdate().add(mod); } } else if (!updatedValues.equals(originalValues)) { // avoid unwanted inputs updatedValues.remove(""); if (!entry.getValue().isReadonly()) { mod.getValuesToBeAdded().addAll(updatedValues); if (!mod.isEmpty()) { if (virtuals) { result.getVirAttrsToRemove().add(mod.getSchema()); } else { result.getAttrsToRemove().add(mod.getSchema()); } } } mod.getValuesToBeRemoved().addAll(originalValues); if (!mod.isEmpty()) { if (virtuals) { result.getVirAttrsToUpdate().add(mod); } else { result.getAttrsToUpdate().add(mod); } } } } } private static void diff(final AbstractAttributableTO updated, final AbstractAttributableTO original, final AbstractAttributableMod result, final boolean incremental) { // 1. check same id if (updated.getId() != original.getId()) { throw new IllegalArgumentException("AttributableTO's id must be the same"); } result.setId(updated.getId()); // 2. attributes Map<String, AttributeTO> updatedAttrs = new HashMap<String, AttributeTO>(updated.getAttrMap()); Map<String, AttributeTO> originalAttrs = new HashMap<String, AttributeTO>(original.getAttrMap()); Set<String> originalAttrNames = new HashSet<String>(originalAttrs.keySet()); originalAttrNames.removeAll(updatedAttrs.keySet()); if (!incremental) { result.getAttrsToRemove().clear(); result.getAttrsToRemove().addAll(originalAttrNames); } Set<String> emptyUpdatedAttrs = new HashSet<String>(); for (Map.Entry<String, AttributeTO> entry : updatedAttrs.entrySet()) { if (entry.getValue().getValues() == null || entry.getValue().getValues().isEmpty()) { emptyUpdatedAttrs.add(entry.getKey()); } } for (String emptyUpdatedAttr : emptyUpdatedAttrs) { updatedAttrs.remove(emptyUpdatedAttr); result.getAttrsToRemove().add(emptyUpdatedAttr); } populate(updatedAttrs, originalAttrs, result); // 3. derived attributes updatedAttrs = updated.getDerAttrMap(); originalAttrs = original.getDerAttrMap(); originalAttrNames = new HashSet<String>(originalAttrs.keySet()); originalAttrNames.removeAll(updatedAttrs.keySet()); if (!incremental) { result.getDerAttrsToRemove().clear(); result.getDerAttrsToRemove().addAll(originalAttrNames); } Set<String> updatedAttrNames = new HashSet<String>(updatedAttrs.keySet()); updatedAttrNames.removeAll(originalAttrs.keySet()); result.getDerAttrsToAdd().clear(); result.getDerAttrsToAdd().addAll(updatedAttrNames); // 4. virtual attributes updatedAttrs = updated.getVirAttrMap(); originalAttrs = original.getVirAttrMap(); originalAttrNames = new HashSet<String>(originalAttrs.keySet()); originalAttrNames.removeAll(updatedAttrs.keySet()); if (!incremental) { result.getVirAttrsToRemove().clear(); result.getVirAttrsToRemove().addAll(originalAttrNames); } populate(updatedAttrs, originalAttrs, result, true); // 5. resources if (original instanceof AbstractSubjectTO && updated instanceof AbstractSubjectTO && result instanceof AbstractSubjectMod) { Set<String> updatedRes = new HashSet<String>(((AbstractSubjectTO) updated).getResources()); Set<String> originalRes = new HashSet<String>(((AbstractSubjectTO) original).getResources()); updatedRes.removeAll(originalRes); ((AbstractSubjectMod) result).getResourcesToAdd().clear(); ((AbstractSubjectMod) result).getResourcesToAdd().addAll(updatedRes); originalRes.removeAll(((AbstractSubjectTO) updated).getResources()); if (!incremental) { ((AbstractSubjectMod) result).getResourcesToRemove().clear(); ((AbstractSubjectMod) result).getResourcesToRemove().addAll(originalRes); } } } /** * Calculate modifications needed by first in order to be equal to second. * * @param updated updated UserTO * @param original original UserTO * @return UserMod containing differences */ public static UserMod diff(final UserTO updated, final UserTO original) { return diff(updated, original, false); } /** * Calculate modifications needed by first in order to be equal to second. * * @param updated updated UserTO * @param original original UserTO * @param incremental perform incremental diff (without removing existing info) * @return UserMod containing differences */ public static UserMod diff(final UserTO updated, final UserTO original, final boolean incremental) { UserMod result = new UserMod(); diff(updated, original, result, incremental); // 1. password if (original.getPassword() != null && !original.getPassword().equals(updated.getPassword())) { result.setPassword(updated.getPassword()); } // 2. username if (original.getUsername() != null && !original.getUsername().equals(updated.getUsername())) { result.setUsername(updated.getUsername()); } // 3. memberships Map<Long, MembershipTO> updatedMembs = updated.getMembershipMap(); Map<Long, MembershipTO> originalMembs = original.getMembershipMap(); for (Map.Entry<Long, MembershipTO> entry : updatedMembs.entrySet()) { MembershipMod membMod = new MembershipMod(); membMod.setRole(entry.getValue().getRoleId()); if (originalMembs.containsKey(entry.getKey())) { // if memberships are actually same, just make the isEmpty() call below succeed if (entry.getValue().equals(originalMembs.get(entry.getKey()))) { membMod.setRole(0); } else { diff(entry.getValue(), originalMembs.get(entry.getKey()), membMod, false); } } else { for (AttributeTO attr : entry.getValue().getAttrs()) { AttributeMod attrMod = new AttributeMod(); attrMod.setSchema(attr.getSchema()); attrMod.getValuesToBeAdded().addAll(attr.getValues()); if (!attrMod.isEmpty()) { membMod.getAttrsToUpdate().add(attrMod); membMod.getAttrsToRemove().add(attrMod.getSchema()); } } for (AttributeTO attr : entry.getValue().getDerAttrs()) { membMod.getDerAttrsToAdd().add(attr.getSchema()); } for (AttributeTO attr : entry.getValue().getVirAttrs()) { AttributeMod attrMod = new AttributeMod(); attrMod.setSchema(attr.getSchema()); attrMod.getValuesToBeAdded().addAll(attr.getValues()); if (!attrMod.isEmpty()) { membMod.getVirAttrsToUpdate().add(attrMod); membMod.getAttrsToRemove().add(attrMod.getSchema()); } } } if (!membMod.isEmpty()) { result.getMembershipsToAdd().add(membMod); } } if (!incremental) { Set<Long> originalRoles = new HashSet<Long>(originalMembs.keySet()); originalRoles.removeAll(updatedMembs.keySet()); for (Long roleId : originalRoles) { result.getMembershipsToRemove().add(originalMembs.get(roleId).getId()); } } return result; } /** * Calculate modifications needed by first in order to be equal to second. * * @param updated updated RoleTO * @param original original RoleTO * @return RoleMod containing differences */ public static RoleMod diff(final RoleTO updated, final RoleTO original) { return diff(updated, original, false); } /** * Calculate modifications needed by first in order to be equal to second. * * @param updated updated RoleTO * @param original original RoleTO * @param incremental perform incremental diff (without removing existing info) * @return RoleMod containing differences */ public static RoleMod diff(final RoleTO updated, final RoleTO original, final boolean incremental) { RoleMod result = new RoleMod(); diff(updated, original, result, incremental); // 1. inheritance result.setInheritOwner(updated.isInheritOwner()); result.setInheritTemplates(updated.isInheritTemplates()); result.setInheritAccountPolicy(updated.isInheritAccountPolicy()); result.setInheritPasswordPolicy(updated.isInheritPasswordPolicy()); result.setInheritAttributes(updated.isInheritAttrs()); result.setInheritDerAttrs(updated.isInheritDerAttrs()); result.setInheritVirAttrs(updated.isInheritVirAttrs()); // 2. policies result.setAccountPolicy(new ReferenceMod(updated.getAccountPolicy())); result.setPasswordPolicy(new ReferenceMod(updated.getPasswordPolicy())); // 3. name if (!original.getName().equals(updated.getName())) { result.setName(updated.getName()); } // 4. entitlements Set<String> updatedEnts = new HashSet<String>(updated.getEntitlements()); Set<String> originalEnts = new HashSet<String>(original.getEntitlements()); if (updatedEnts.equals(originalEnts)) { result.setModEntitlements(false); result.getEntitlements().clear(); } else { result.setModEntitlements(true); result.getEntitlements().addAll(updated.getEntitlements()); } // 5. templates Set<String> updatedTemplates = new HashSet<String>(updated.getRAttrTemplates()); Set<String> originalTemplates = new HashSet<String>(original.getRAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModRAttrTemplates(false); result.getRAttrTemplates().clear(); } else { result.setModRAttrTemplates(true); result.getRAttrTemplates().addAll(updated.getRAttrTemplates()); } updatedTemplates = new HashSet<String>(updated.getRDerAttrTemplates()); originalTemplates = new HashSet<String>(original.getRDerAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModRDerAttrTemplates(false); result.getRDerAttrTemplates().clear(); } else { result.setModRDerAttrTemplates(true); result.getRDerAttrTemplates().addAll(updated.getRDerAttrTemplates()); } updatedTemplates = new HashSet<String>(updated.getRVirAttrTemplates()); originalTemplates = new HashSet<String>(original.getRVirAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModRVirAttrTemplates(false); result.getRVirAttrTemplates().clear(); } else { result.setModRVirAttrTemplates(true); result.getRVirAttrTemplates().addAll(updated.getRVirAttrTemplates()); } updatedTemplates = new HashSet<String>(updated.getMAttrTemplates()); originalTemplates = new HashSet<String>(original.getMAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModMAttrTemplates(false); result.getMAttrTemplates().clear(); } else { result.setModMAttrTemplates(true); result.getMAttrTemplates().addAll(updated.getMAttrTemplates()); } updatedTemplates = new HashSet<String>(updated.getMDerAttrTemplates()); originalTemplates = new HashSet<String>(original.getMDerAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModMDerAttrTemplates(false); result.getMDerAttrTemplates().clear(); } else { result.setModMDerAttrTemplates(true); result.getMDerAttrTemplates().addAll(updated.getMDerAttrTemplates()); } updatedTemplates = new HashSet<String>(updated.getMVirAttrTemplates()); originalTemplates = new HashSet<String>(original.getMVirAttrTemplates()); if (updatedTemplates.equals(originalTemplates)) { result.setModMVirAttrTemplates(false); result.getMVirAttrTemplates().clear(); } else { result.setModMVirAttrTemplates(true); result.getMVirAttrTemplates().addAll(updated.getMVirAttrTemplates()); } // 6. owner result.setUserOwner(new ReferenceMod(updated.getUserOwner())); result.setRoleOwner(new ReferenceMod(updated.getRoleOwner())); return result; } private static List<AttributeTO> getUpdateValues(final Map<String, AttributeTO> attrs, final Set<String> attrsToBeRemoved, final Set<AttributeMod> attrsToBeUpdated) { Map<String, AttributeTO> rwattrs = new HashMap<String, AttributeTO>(attrs); for (String attrName : attrsToBeRemoved) { rwattrs.remove(attrName); } for (AttributeMod attrMod : attrsToBeUpdated) { if (rwattrs.containsKey(attrMod.getSchema())) { AttributeTO attrTO = rwattrs.get(attrMod.getSchema()); attrTO.getValues().removeAll(attrMod.getValuesToBeRemoved()); attrTO.getValues().addAll(attrMod.getValuesToBeAdded()); } else { AttributeTO attrTO = new AttributeTO(); attrTO.setSchema(attrMod.getSchema()); attrTO.getValues().addAll(attrMod.getValuesToBeAdded()); rwattrs.put(attrMod.getSchema(), attrTO); } } return new ArrayList<AttributeTO>(rwattrs.values()); } private static <T extends AbstractAttributableTO, K extends AbstractAttributableMod> void apply(final T to, final K mod, final T result) { // 1. attributes result.getAttrs().addAll(getUpdateValues(to.getAttrMap(), mod.getAttrsToRemove(), mod.getAttrsToUpdate())); // 2. derived attributes Map<String, AttributeTO> attrs = to.getDerAttrMap(); for (String attrName : mod.getDerAttrsToRemove()) { attrs.remove(attrName); } for (String attrName : mod.getDerAttrsToAdd()) { AttributeTO attrTO = new AttributeTO(); attrTO.setSchema(attrName); attrs.put(attrName, attrTO); } result.getDerAttrs().addAll(attrs.values()); // 3. virtual attributes result.getVirAttrs() .addAll(getUpdateValues(to.getVirAttrMap(), mod.getVirAttrsToRemove(), mod.getVirAttrsToUpdate())); // 4. resources if (result instanceof AbstractSubjectTO && mod instanceof AbstractSubjectMod) { ((AbstractSubjectTO) result).getResources() .removeAll(((AbstractSubjectMod) mod).getResourcesToRemove()); ((AbstractSubjectTO) result).getResources().addAll(((AbstractSubjectMod) mod).getResourcesToAdd()); } } public static UserTO apply(final UserTO userTO, final UserMod userMod) { // 1. check same id if (userTO.getId() != userMod.getId()) { throw new IllegalArgumentException("UserTO and UserMod ids must be the same"); } UserTO result = SerializationUtils.clone(userTO); apply(userTO, userMod, result); // 1. password result.setPassword(userMod.getPassword()); // 2. username if (userMod.getUsername() != null) { result.setUsername(userMod.getUsername()); } // 3. memberships Map<Long, MembershipTO> membs = result.getMembershipMap(); for (Long membId : userMod.getMembershipsToRemove()) { result.getMemberships().remove(membs.get(membId)); } for (MembershipMod membMod : userMod.getMembershipsToAdd()) { MembershipTO membTO = new MembershipTO(); membTO.setRoleId(membMod.getRole()); apply(membTO, membMod, membTO); } return result; } }