| /* |
| * Copyright (c) 2007, Rickard Öberg. All Rights Reserved. |
| * |
| * Licensed 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.zest.spi.entity; |
| |
| import java.io.Serializable; |
| import org.apache.zest.api.Qi4j; |
| import org.apache.zest.api.entity.EntityComposite; |
| import org.apache.zest.api.util.Classes; |
| |
| import static org.apache.zest.functional.Iterables.first; |
| |
| /** |
| * A Qualified Identity is the combination of the Composite type name and the identity of a specific |
| * Entity instance. When stringified, these two are separated by the ":" character. Example: |
| * <pre> |
| * com.mycompany.mydomain.SomeEntity:123456 |
| * </pre> |
| * where "com.mycompany.mydomain.SomeEntity" is the Composite type, and "123456" is the identity. |
| */ |
| public final class QualifiedIdentity |
| implements Serializable |
| { |
| public static QualifiedIdentity parseURI( String uri ) |
| { |
| String str = uri.substring( "urn:qi4j:entity:".length() ); |
| int idx = str.indexOf( "/" ); |
| String type = str.substring( 0, idx ).replace( "-", "$" ); |
| String identity = str.substring( idx + 1 ); |
| return new QualifiedIdentity( identity, type ); |
| } |
| |
| public static QualifiedIdentity parseQualifiedIdentity( String id ) |
| { |
| return new QualifiedIdentity( id ); |
| } |
| |
| public static QualifiedIdentity qualifiedIdentityOf( Object o ) |
| { |
| return new QualifiedIdentity( (EntityComposite) o ); |
| } |
| |
| private static final long serialVersionUID = 1L; |
| |
| // Associations who have been set to "null" should use this as the representation in the EntityState |
| public static final QualifiedIdentity NULL = new QualifiedIdentity( "null", "none" ); |
| |
| private String identity; |
| private String compositeType; |
| |
| public QualifiedIdentity( EntityComposite entityComposite ) |
| { |
| this( entityComposite.identity().get(), first( Qi4j.FUNCTION_DESCRIPTOR_FOR |
| .map( entityComposite ) |
| .types() ).getName() ); |
| } |
| |
| public QualifiedIdentity( String identity, Class<?> clazz ) |
| { |
| this.identity = identity; |
| this.compositeType = clazz.getName(); |
| } |
| |
| public QualifiedIdentity( String identity, String clazz ) |
| { |
| this.identity = identity; |
| this.compositeType = clazz; |
| } |
| |
| protected QualifiedIdentity( String qualifiedIdentity ) |
| { |
| int separatorIndex = qualifiedIdentity.indexOf( ":" ); |
| if( separatorIndex == -1 ) |
| { |
| throw new IllegalArgumentException( "Supplied string is not a qualified identity: " + qualifiedIdentity ); |
| } |
| this.compositeType = qualifiedIdentity.substring( 0, separatorIndex ); |
| this.identity = qualifiedIdentity.substring( separatorIndex + 1 ); |
| } |
| |
| public final String identity() |
| { |
| return identity; |
| } |
| |
| public final String type() |
| { |
| return compositeType; |
| } |
| |
| public final String toURI() |
| { |
| return "urn:qi4j:entity:" + Classes.normalizeClassToURI( compositeType ) + "/" + identity; |
| } |
| |
| @Override |
| @SuppressWarnings( "AccessingNonPublicFieldOfAnotherObject" ) |
| public boolean equals( Object o ) |
| { |
| if( this == o ) |
| { |
| return true; |
| } |
| if( o == null || getClass() != o.getClass() ) |
| { |
| return false; |
| } |
| QualifiedIdentity that = (QualifiedIdentity) o; |
| return compositeType.equals( that.compositeType ) && identity.equals( that.identity ); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int result; |
| result = identity.hashCode(); |
| result = 31 * result + compositeType.hashCode(); |
| return result; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return compositeType + ":" + identity; |
| } |
| } |