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Moving to root below branch label
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Derek Hulley
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/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.repo.policy;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Set;
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import org.alfresco.service.cmr.dictionary.AssociationDefinition;
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import org.alfresco.service.cmr.dictionary.DictionaryService;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.namespace.QName;
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/**
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* Delegate for a Class Feature-level (Property and Association) Policies. Provides
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* access to Policy Interface implementations which invoke the appropriate bound behaviours.
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*
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* @author David Caruana
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*
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* @param <P> the policy interface
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*/
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public class AssociationPolicyDelegate<P extends AssociationPolicy>
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{
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private DictionaryService dictionary;
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private CachedPolicyFactory<ClassFeatureBehaviourBinding, P> factory;
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/**
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* Construct.
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*
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* @param dictionary the dictionary service
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* @param policyClass the policy interface class
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* @param index the behaviour index to query against
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*/
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@SuppressWarnings("unchecked")
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/*package*/ AssociationPolicyDelegate(DictionaryService dictionary, Class<P> policyClass, BehaviourIndex<ClassFeatureBehaviourBinding> index)
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{
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// Get list of all pre-registered behaviours for the policy and
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// ensure they are valid.
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Collection<BehaviourDefinition> definitions = index.getAll();
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for (BehaviourDefinition definition : definitions)
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{
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definition.getBehaviour().getInterface(policyClass);
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}
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// Rely on cached implementation of policy factory
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// Note: Could also use PolicyFactory (without caching)
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this.factory = new CachedPolicyFactory<ClassFeatureBehaviourBinding, P>(policyClass, index);
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this.dictionary = dictionary;
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}
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/**
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* Ensures the validity of the given assoc type
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*
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* @param assocTypeQName
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* @throws IllegalArgumentException
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*/
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private void checkAssocType(QName assocTypeQName) throws IllegalArgumentException
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{
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AssociationDefinition assocDef = dictionary.getAssociation(assocTypeQName);
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if (assocDef == null)
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{
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throw new IllegalArgumentException("Association " + assocTypeQName + " has not been defined in the data dictionary");
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}
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}
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/**
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* Gets the Policy implementation for the specified Class and Association
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*
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* When multiple behaviours are bound to the policy for the class feature, an
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* aggregate policy implementation is returned which invokes each policy
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* in turn.
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*
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* @param classQName the class qualified name
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* @param assocTypeQName the association type qualified name
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* @return the policy
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*/
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public P get(QName classQName, QName assocTypeQName)
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{
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return get(null, classQName, assocTypeQName);
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}
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/**
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* Gets the Policy implementation for the specified Class and Association
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*
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* When multiple behaviours are bound to the policy for the class feature, an
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* aggregate policy implementation is returned which invokes each policy
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* in turn.
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*
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* @param nodeRef the node reference
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* @param classQName the class qualified name
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* @param assocTypeQName the association type qualified name
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* @return the policy
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*/
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public P get(NodeRef nodeRef, QName classQName, QName assocTypeQName)
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{
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checkAssocType(assocTypeQName);
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return factory.create(new ClassFeatureBehaviourBinding(dictionary, nodeRef, classQName, assocTypeQName));
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}
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/**
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* Gets the collection of Policy implementations for the specified Class and Association
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*
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* @param classQName the class qualified name
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* @param assocTypeQName the association type qualified name
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* @return the collection of policies
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*/
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public Collection<P> getList(QName classQName, QName assocTypeQName)
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{
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return getList(null, classQName, assocTypeQName);
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}
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/**
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* Gets the collection of Policy implementations for the specified Class and Association
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*
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* @param nodeRef the node reference
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* @param classQName the class qualified name
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* @param assocTypeQName the association type qualified name
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* @return the collection of policies
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*/
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public Collection<P> getList(NodeRef nodeRef, QName classQName, QName assocTypeQName)
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{
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checkAssocType(assocTypeQName);
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return factory.createList(new ClassFeatureBehaviourBinding(dictionary, nodeRef, classQName, assocTypeQName));
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}
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/**
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* Gets a <tt>Policy</tt> for all the given Class and Association
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*
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* @param classQNames the class qualified names
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* @param assocTypeQName the association type qualified name
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* @return Return the policy
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*/
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public P get(Set<QName> classQNames, QName assocTypeQName)
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{
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return get(null, classQNames, assocTypeQName);
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}
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/**
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* Gets a <tt>Policy</tt> for all the given Class and Association
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*
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* @param nodeRef the node reference
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* @param classQNames the class qualified names
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* @param assocTypeQName the association type qualified name
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* @return Return the policy
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*/
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public P get(NodeRef nodeRef, Set<QName> classQNames, QName assocTypeQName)
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{
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checkAssocType(assocTypeQName);
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return factory.toPolicy(getList(nodeRef, classQNames, assocTypeQName));
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}
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/**
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* Gets the <tt>Policy</tt> instances for all the given Classes and Associations
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*
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* @param classQNames the class qualified names
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* @param assocTypeQName the association type qualified name
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* @return Return the policies
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*/
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public Collection<P> getList(Set<QName> classQNames, QName assocTypeQName)
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{
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return getList(null, classQNames, assocTypeQName);
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}
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/**
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* Gets the <tt>Policy</tt> instances for all the given Classes and Associations
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*
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* @param nodeRef the node reference
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* @param classQNames the class qualified names
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* @param assocTypeQName the association type qualified name
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* @return Return the policies
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*/
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public Collection<P> getList(NodeRef nodeRef, Set<QName> classQNames, QName assocTypeQName)
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{
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checkAssocType(assocTypeQName);
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Collection<P> policies = new HashSet<P>();
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for (QName classQName : classQNames)
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{
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P policy = factory.create(new ClassFeatureBehaviourBinding(dictionary, nodeRef, classQName, assocTypeQName));
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if (policy instanceof PolicyList)
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{
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policies.addAll(((PolicyList<P>)policy).getPolicies());
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}
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else
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{
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policies.add(policy);
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}
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}
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return policies;
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}
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}
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