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1 package org.hibernate.type;
3
4 import java.io.Serializable  ;
5 import java.lang.reflect.Array ;
6 import java.util.ArrayList ;
7 import java.util.Arrays ;
8 import java.util.Iterator ;
9 import java.util.List ;
10 import java.util.Map ;
11
12 import org.hibernate.EntityMode;
13 import org.hibernate.HibernateException;
14 import org.hibernate.collection.PersistentArrayHolder;
15 import org.hibernate.collection.PersistentCollection;
16 import org.hibernate.engine.SessionFactoryImplementor;
17 import org.hibernate.engine.SessionImplementor;
18 import org.hibernate.persister.collection.CollectionPersister;
19
20
24 public class ArrayType extends CollectionType {
25
26 private final Class elementClass;
27 private final Class arrayClass;
28
29 public ArrayType(String role, String propertyRef, Class elementClass, boolean isEmbeddedInXML) {
30 super(role, propertyRef, isEmbeddedInXML);
31 this.elementClass = elementClass;
32 arrayClass = Array.newInstance(elementClass, 0).getClass();
33 }
34
35 public Class getReturnedClass() {
36 return arrayClass;
37 }
38
39 public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister, Serializable key)
40 throws HibernateException {
41 return new PersistentArrayHolder(session, persister);
42 }
43
44
47 public Iterator getElementsIterator(Object collection) {
48 return Arrays.asList( (Object []) collection ).iterator();
49 }
50
51 public PersistentCollection wrap(SessionImplementor session, Object array) {
52 return new PersistentArrayHolder(session, array);
53 }
54
55 public boolean isArrayType() {
56 return true;
57 }
58
59 public String toLoggableString(Object value, SessionFactoryImplementor factory) throws HibernateException {
60 if (value==null) return "null";
61 int length = Array.getLength(value);
62 List list = new ArrayList (length);
63 Type elemType = getElementType(factory);
64 for ( int i=0; i<length; i++ ) {
65 list.add( elemType.toLoggableString( Array.get(value, i), factory ) );
66 }
67 return list.toString();
68 }
69
70 public Object instantiate(Object original) {
71 return Array.newInstance( elementClass, Array.getLength(original) );
72 }
73
74 public Object replaceElements(
75 Object original,
76 Object target,
77 Object owner,
78 Map copyCache,
79 SessionImplementor session)
80 throws HibernateException {
81
82 int length = Array.getLength(original);
83 if ( length!=Array.getLength(target) ) {
84 target=instantiate(original);
86 }
87
88 Type elemType = getElementType( session.getFactory() );
89 for ( int i=0; i<length; i++ ) {
90 Array.set( target, i, elemType.replace( Array.get(original, i), null, session, owner, copyCache ) );
91 }
92
93 return target;
94
95 }
96
97 public Object indexOf(Object array, Object element) {
98 int length = Array.getLength(array);
99 for ( int i=0; i<length; i++ ) {
100 if ( Array.get(array, i)==element ) return new Integer (i);
102 }
103 return null;
104 }
105
106 protected boolean initializeImmediately(EntityMode entityMode) {
107 return true;
108 }
109
110 public boolean hasHolder(EntityMode entityMode) {
111 return true;
112 }
113
114
115 }
116 |
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