|
1 package org.hibernate.type;
3
4 import java.io.Serializable  ;
5 import java.sql.Blob ;
6 import java.sql.PreparedStatement ;
7 import java.sql.ResultSet ;
8 import java.sql.SQLException ;
9 import java.sql.Types ;
10 import java.util.Map ;
11
12 import org.dom4j.Node;
13 import org.hibernate.EntityMode;
14 import org.hibernate.HibernateException;
15 import org.hibernate.MappingException;
16 import org.hibernate.engine.Mapping;
17 import org.hibernate.engine.SessionFactoryImplementor;
18 import org.hibernate.engine.SessionImplementor;
19 import org.hibernate.lob.BlobImpl;
20 import org.hibernate.lob.SerializableBlob;
21 import org.hibernate.util.ArrayHelper;
22
23
27 public class BlobType extends AbstractType {
28
29 public void set(PreparedStatement st, Object value, int index, SessionImplementor session)
30 throws HibernateException, SQLException {
31
32 if (value==null) {
33 st.setNull(index, Types.BLOB);
34 }
35 else {
36
37 if (value instanceof SerializableBlob) {
38 value = ( (SerializableBlob) value ).getWrappedBlob();
39 }
40
41 final boolean useInputStream = session.getFactory().getDialect().useInputStreamToInsertBlob() &&
42 (value instanceof BlobImpl);
43
44 if ( useInputStream ) {
45 BlobImpl blob = (BlobImpl) value;
46 st.setBinaryStream( index, blob.getBinaryStream(), (int) blob.length() );
47 }
48 else {
49 st.setBlob(index, (Blob ) value);
50 }
51
52 }
53
54 }
55
56 public Object get(ResultSet rs, String name) throws HibernateException, SQLException {
57 Blob value = rs.getBlob(name);
58 return rs.wasNull() ? null : new SerializableBlob(value);
59 }
60
61 public Class getReturnedClass() {
62 return Blob .class;
63 }
64
65 public boolean isEqual(Object x, Object y, EntityMode entityMode) {
66 return x == y;
67 }
68
69 public int getHashCode(Object x, EntityMode entityMode) {
70 return System.identityHashCode(x);
71 }
72
73 public int compare(Object x, Object y, EntityMode entityMode) {
74 return 0; }
76
77 public String getName() {
78 return "blob";
79 }
80
81 public Serializable disassemble(Object value, SessionImplementor session, Object owner)
82 throws HibernateException {
83 throw new UnsupportedOperationException ("Blobs are not cacheable");
84 }
85
86 public Object deepCopy(Object value, EntityMode entityMode, SessionFactoryImplementor factory) {
87 return value;
88 }
89
90 public Object fromXMLNode(Node xml, Mapping factory) {
91 throw new UnsupportedOperationException ("todo");
92 }
93
94 public int getColumnSpan(Mapping mapping) {
95 return 1;
96 }
97
98 public boolean isMutable() {
99 return false;
100 }
101
102 public Object nullSafeGet(ResultSet rs, String name,
103 SessionImplementor session, Object owner)
104 throws HibernateException, SQLException {
105 return get(rs, name);
106 }
107
108 public Object nullSafeGet(ResultSet rs, String [] names,
109 SessionImplementor session, Object owner)
110 throws HibernateException, SQLException {
111 return get( rs, names[0] );
112 }
113
114 public void nullSafeSet(PreparedStatement st, Object value, int index,
115 boolean[] settable, SessionImplementor session)
116 throws HibernateException, SQLException {
117 if ( settable[0] ) set(st, value, index, session);
118 }
119
120 public void nullSafeSet(PreparedStatement st, Object value, int index,
121 SessionImplementor session) throws HibernateException, SQLException {
122 set(st, value, index, session);
123 }
124
125 public Object replace(Object original, Object target,
126 SessionImplementor session, Object owner, Map copyCache)
127 throws HibernateException {
128 return target;
130 }
131
132 public int[] sqlTypes(Mapping mapping) throws MappingException {
133 return new int[] { Types.BLOB };
134 }
135
136 public void setToXMLNode(Node node, Object value, SessionFactoryImplementor factory) {
137 throw new UnsupportedOperationException ("todo");
138 }
139
140 public String toLoggableString(Object value, SessionFactoryImplementor factory)
141 throws HibernateException {
142 return value==null ? "null" : value.toString();
143 }
144
145 public boolean[] toColumnNullness(Object value, Mapping mapping) {
146 return value==null ? ArrayHelper.FALSE : ArrayHelper.TRUE;
147 }
148
149 }
150
151
152
153
154
155
156 |
Popular Tags |
Java API By Example, From Geeks To Geeks.