001package org.nuxeo.ecm.core.api; 002 003import java.io.InvalidObjectException; 004import java.io.ObjectStreamException; 005import java.security.Principal; 006 007/** 008 * Document repository reference including the principal owner of the session. 009 * 010 * @since 7.10 011 * @author Stephane Lacoin at Nuxeo (aka matic) 012 */ 013public class InstanceRef implements DocumentRef { 014 015 private static final long serialVersionUID = 1L; 016 017 final String repositoryName; 018 019 final Principal principal; 020 021 final DocumentRef ref; 022 023 transient DocumentModel referent; 024 025 public InstanceRef(DocumentModel doc, Principal principal) { 026 if (doc.getRef() == null) { 027 throw new NullPointerException("document as no reference yet"); 028 } 029 referent = doc; 030 repositoryName = doc.getRepositoryName(); 031 this.principal = principal; 032 ref = doc.getRef(); 033 } 034 035 @Override 036 public int type() { 037 return -1; 038 } 039 040 @Override 041 public Object reference() { 042 return referent; 043 } 044 045 private Object readResolve() throws ObjectStreamException { 046 try { 047 try (CoreSession session = CoreInstance.openCoreSession(repositoryName, principal)) { 048 referent = session.getDocument(ref); 049 referent.detach(true); 050 return referent; 051 } 052 } catch (RuntimeException cause) { 053 InvalidObjectException error = new InvalidObjectException( 054 "Cannot refetch " + ref + " from " + repositoryName); 055 error.initCause(cause); 056 throw error; 057 } 058 } 059 060 @Override 061 public int hashCode() { 062 final int prime = 31; 063 int result = 1; 064 result = prime * result + ((repositoryName == null) ? 0 : repositoryName.hashCode()); 065 result = prime * result + ((ref == null) ? 0 : ref.hashCode()); 066 result = prime * result + ((principal == null) ? 0 : principal.hashCode()); 067 return result; 068 } 069 070 @Override 071 public boolean equals(Object obj) { 072 if (this == obj) { 073 return true; 074 } 075 if (obj == null) { 076 return false; 077 } 078 if (getClass() != obj.getClass()) { 079 return false; 080 } 081 InstanceRef other = (InstanceRef) obj; 082 if (repositoryName == null) { 083 if (other.repositoryName != null) { 084 return false; 085 } 086 } else if (!repositoryName.equals(other.repositoryName)) { 087 return false; 088 } 089 if (ref == null) { 090 if (other.ref != null) { 091 return false; 092 } 093 } else if (!ref.equals(other.ref)) { 094 return false; 095 } 096 if (principal == null) { 097 if (other.principal != null) { 098 return false; 099 } 100 } else if (!principal.equals(other.principal)) { 101 return false; 102 } 103 return true; 104 } 105}