| /* |
| * 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.polygene.api.constraint; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Objects; |
| import java.util.ResourceBundle; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| import org.apache.polygene.api.composite.CompositeDescriptor; |
| import org.apache.polygene.api.entity.EntityDescriptor; |
| import org.apache.polygene.api.identity.Identity; |
| import org.apache.polygene.api.service.ServiceDescriptor; |
| import org.apache.polygene.api.util.Classes; |
| |
| /** |
| * This Exception is thrown when there is one or more Constraint Violations in a method |
| * call. |
| * <p> |
| * The Constraint Violations are aggregated per method, and this exception will contain those |
| * violations, together with the Composite instance it happened on as well as the Method that |
| * was invoked. The Exception also has support for localized messages of these violations. |
| * </p> |
| */ |
| public class ConstraintViolationException extends IllegalArgumentException |
| { |
| private static final boolean longNames = Boolean.getBoolean( "polygene.constraints.longNames" ); |
| private static final String DEFAULT_PATTERN = "\n\tConstraint Violation(s) in {0} of types [{3}].\n"; |
| private static final String ENTITY_DEFAULT_PATTERN = "\n\tConstraint Violation(s) in entity {0} with id=[{2}].\n"; |
| private static final String SERVICE_DEFAULT_PATTERN = "\n\tConstraint Violation(s) in service {0} with id=[{2}].\n"; |
| private static final String MIXIN_DEFAULT_PATTERN = "\t\t@{2}({3}) on {0}.{1}(). Parameter [{4}] does not allow value [{5}].\n"; |
| |
| private String instanceToString; // arg {0} |
| private Class<?> primaryType; // arg {1} |
| private List<? extends Type> instanceTypes; // arg {2} |
| private Collection<ValueConstraintViolation> constraintViolations; // arg {4} and {5} |
| private String identity; // arg {6} |
| private boolean isService; |
| private boolean isEntity; |
| |
| public ConstraintViolationException( Collection<ValueConstraintViolation> violations ) |
| { |
| this.constraintViolations = new ArrayList<>(); |
| this.constraintViolations.addAll( violations ); |
| } |
| |
| public Collection<ValueConstraintViolation> constraintViolations() |
| { |
| return constraintViolations; |
| } |
| |
| /** |
| * Creates localized message of all the constraint violations that has occured. |
| * <p> |
| * Each ConstraintViolationException concerns one Composite instance, but may have many violations on that |
| * instance. For the composite instance related message following entries in the ResourceBundle will be searched |
| * for a pattern in the following order; |
| * </p> |
| * <ol> |
| * <li><code>polygene.constraint.<i><strong>CompositeType</strong></i></code></li> |
| * <li><code>polygene.constraint.composite</code></li> |
| * </ol> |
| * <p> |
| * where <strong><code><i>CompositeType</i></code></strong> is the |
| * class name of the Composite instance. If such key does not exist, or if the resourceBundle argument is null, |
| * then the default patterns will be used; |
| * </p> |
| * <table summary="Default localization of constraint violations for composite."> |
| * <tr><th>Type of Composite</th><th>Pattern used</th></tr> |
| * <tr><td>Composite</td> |
| * <td><code>\tConstraint Violation(s) in {0} with types {3}\n</code></td> |
| * </tr> |
| * <tr><td>EntityComposite</td> |
| * <td><code>Constraint Violation in {2}.{3} with constraint {4}, in entity {1}[id={0}]</code></td> |
| * </tr> |
| * <tr><td>ServiceComposite</td> |
| * <td><code>Constraint Violation in {2}.{3} with constraint {4}, in service {0}</code></td> |
| * </tr> |
| * </table> |
| * The ResourceBundle arguments are defined as; |
| * <p> |
| * <p> |
| * Then format each ConstraintViolation according to such pattern, where the following argument are passed; |
| * <table summary="List of arguments available."><tr><th>Arg</th><th>Value</th></tr> |
| * <tr> |
| * <td>{0}</td> |
| * <td>Primary Type of Composite</td> |
| * </tr> |
| * <tr> |
| * <td>{1}</td> |
| * <td>Composite instance toString()</td> |
| * </tr> |
| * <tr> |
| * <td>{2}</td> |
| * <td>Identity if composite implements HasIdentity</td> |
| * </tr> |
| * <tr> |
| * <td>{3}</td> |
| * <td>Comma-separeated list of types implemented by Composite</td> |
| * </tr> |
| * </table> |
| * <p> |
| * Once the message at the composite type level has been established, the message will contain each of the found |
| * violations. For each such violation, the resource bundle will be searched in the following order; |
| * <ol> |
| * <li><code>polygene.constraint.<i><strong>MixinType</strong></i>.<i><strong>member</strong></i></code></li> |
| * <li><code>polygene.constraint.<i><strong>MixinType</strong></i></code></li> |
| * <li><code>polygene.constraint.mixin</code></li> |
| * </ol> |
| * where <code><i><strong>MixinType</strong></i></code> refers to the mixin type of the member (method, field or |
| * constructor) and the <code><i><strong>member</strong></i></code> is the name of such Member. |
| * <table summary="Default localization of constraint violations for mixin."> |
| * <tr><th>Type of Composite</th><th>Pattern used</th></tr> |
| * <tr><td>Mixin</td> |
| * <td><code>\t\t@{2} {0}.{1} does not allow value [{4}]</code></td> |
| * </tr> |
| * </table> |
| * For these the ResourceBundle arguments are; |
| * <table summary="List of arguments available."><tr><th>Arg</th><th>Value</th></tr> |
| * <tr> |
| * <td>{0}</td> |
| * <td>Mixin Type Name</td> |
| * </tr> |
| * <tr> |
| * <td>{1}</td> |
| * <td>Mixin Member Name</td> |
| * </tr> |
| * <tr> |
| * <td>{2}</td> |
| * <td>Annotation type</td> |
| * </tr> |
| * <tr> |
| * <td>{3}</td> |
| * <td>Annotation toString</td> |
| * </tr> |
| * <tr> |
| * <td>{4}</td> |
| * <td>Name of the Member, see {@link Name}</td> |
| * </tr> |
| * <tr> |
| * <td>{5}</td> |
| * <td>Value attempted</td> |
| * </tr> |
| * </table> |
| * |
| * @param bundle The ResourceBundle for Localization, or null if default formatting and locale to be used. |
| * @return An array of localized messages of the violations incurred. |
| */ |
| public String localizedMessageFrom( ResourceBundle bundle ) |
| { |
| Locale locale; |
| if( bundle != null ) |
| { |
| locale = bundle.getLocale(); |
| } |
| else |
| { |
| locale = Locale.getDefault(); |
| } |
| StringBuffer message = new StringBuffer(); |
| { |
| String[] searchKeys = new String[]{ "polygene.constraint." + primaryType, "polygene.constraint.composite" }; |
| String compositePattern = findPattern( bundle, searchKeys, defaultPattern() ); |
| String types = instanceTypes == null |
| ? null |
| : instanceTypes.stream() |
| .map( this::nameOf ) |
| .collect( Collectors.joining( "," ) ); |
| String name; |
| if( longNames ) |
| { |
| name = primaryType.getName(); |
| } |
| else |
| { |
| name = primaryType.getSimpleName(); |
| } |
| Object[] args = new Object[]{ name, instanceToString, identity, types }; |
| MessageFormat formatter = new MessageFormat( compositePattern, locale ); |
| formatter.format( args, message, null ); |
| } |
| for( ValueConstraintViolation violation : constraintViolations ) |
| { |
| String[] searchKeys = new String[]{ "polygene.constraint." + primaryType, "polygene.constraint.composite" }; |
| String mixinPattern = findPattern( bundle, searchKeys, MIXIN_DEFAULT_PATTERN ); |
| |
| Annotation annotation = violation.constraint(); |
| Class<? extends Annotation> annotatioType = annotation.annotationType(); |
| Class<?> mixinType = violation.mixinType(); |
| Object[] args = new Object[] |
| { |
| longNames ? mixinType.getName() : mixinType.getSimpleName(), |
| violation.methodName(), |
| longNames ? annotatioType.getName() : annotatioType.getSimpleName(), |
| annotation.toString(), |
| violation.name(), |
| violation.value() |
| }; |
| MessageFormat formatter = new MessageFormat( mixinPattern, locale ); |
| formatter.format( args, message, null ); |
| } |
| String result = message.toString(); |
| message.setLength( 0 ); // TODO: is this still needed to avoid JVM memory leak?? |
| return result; |
| } |
| |
| private String nameOf( Type type ) |
| { |
| Class<?> clazz = Classes.RAW_CLASS.apply( type ); |
| if( longNames ) |
| { |
| return clazz.getName(); |
| } |
| else |
| { |
| return clazz.getSimpleName(); |
| } |
| } |
| |
| @Override |
| public String getMessage() |
| { |
| return localizedMessageFrom( null ); |
| } |
| |
| private String findPattern( ResourceBundle bundle, String[] searchKeys, String defaultPattern ) |
| { |
| String compositePattern; |
| if( bundle != null ) |
| { |
| compositePattern = Stream.of( searchKeys ) |
| .map( name -> findPattern( bundle, name ) ) |
| .filter( Objects::nonNull ) |
| .findFirst().orElse( defaultPattern ); |
| } |
| else |
| { |
| compositePattern = defaultPattern; |
| } |
| return compositePattern; |
| } |
| |
| private String findPattern( ResourceBundle bundle, String name ) |
| { |
| try |
| { |
| return bundle.getString( name ); |
| } |
| catch( Exception e ) |
| { |
| return null; |
| } |
| } |
| |
| private String defaultPattern() |
| { |
| if( isEntity ) |
| { |
| return ENTITY_DEFAULT_PATTERN; |
| } |
| if( isService ) |
| { |
| return SERVICE_DEFAULT_PATTERN; |
| } |
| return DEFAULT_PATTERN; |
| } |
| |
| public void setCompositeDescriptor( CompositeDescriptor descriptor ) |
| { |
| this.primaryType = descriptor.primaryType(); |
| this.instanceTypes = descriptor.mixinTypes().collect( Collectors.toList() ); |
| this.isEntity = descriptor instanceof EntityDescriptor; |
| this.isService = descriptor instanceof ServiceDescriptor; |
| } |
| |
| public void setIdentity( Identity identity ) |
| { |
| if( identity == null ) |
| { |
| return; |
| } |
| this.identity = identity.toString(); |
| } |
| |
| public void setInstanceString( String instanceString ) |
| { |
| instanceToString = instanceString; |
| } |
| } |