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1 package org.hibernate.type;
3
4 import java.sql.PreparedStatement  ;
5 import java.sql.ResultSet ;
6 import java.sql.SQLException ;
7
8 import org.apache.commons.logging.LogFactory;
9 import org.dom4j.Node;
10
11 import org.hibernate.EntityMode;
12 import org.hibernate.HibernateException;
13 import org.hibernate.engine.Mapping;
14 import org.hibernate.engine.SessionFactoryImplementor;
15 import org.hibernate.engine.SessionImplementor;
16 import org.hibernate.util.ArrayHelper;
17 import org.hibernate.util.EqualsHelper;
18 import org.hibernate.util.StringHelper;
19
20
24 public abstract class NullableType extends AbstractType {
25
26 private static final boolean IS_TRACE_ENABLED;
27 static {
28 IS_TRACE_ENABLED = LogFactory.getLog( StringHelper.qualifier( Type.class.getName() ) ).isTraceEnabled();
30 }
31
32 public abstract Object get(ResultSet rs, String name) throws HibernateException, SQLException ;
33 public abstract void set(PreparedStatement st, Object value, int index) throws HibernateException, SQLException ;
34 public abstract int sqlType();
35 public abstract String toString(Object value) throws HibernateException;
36 public abstract Object fromStringValue(String xml) throws HibernateException;
37
38 public final void nullSafeSet(PreparedStatement st, Object value, int index, boolean[] settable, SessionImplementor session)
39 throws HibernateException, SQLException {
40 if ( settable[0] ) nullSafeSet(st, value, index);
41 }
42
43 public final void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
44 throws HibernateException, SQLException {
45 nullSafeSet(st, value, index);
46 }
47
48 public final void nullSafeSet(PreparedStatement st, Object value, int index)
49 throws HibernateException, SQLException {
50
51 if (value==null) {
52 if (IS_TRACE_ENABLED) {
53 LogFactory.getLog( getClass() ).trace("binding null to parameter: " + index);
54 }
55
56 st.setNull( index, sqlType() );
57 }
58 else {
59 if (IS_TRACE_ENABLED) {
60 LogFactory.getLog( getClass() ).trace("binding '" + toString(value) + "' to parameter: " + index);
61 }
62
63 set(st, value, index);
64 }
65 }
66
67 public final Object nullSafeGet(ResultSet rs, String [] names, SessionImplementor session, Object owner)
68 throws HibernateException, SQLException {
69 return nullSafeGet(rs, names[0]);
70 }
71
72 public final Object nullSafeGet(ResultSet rs, String [] names) throws HibernateException, SQLException {
73 return nullSafeGet(rs, names[0]);
74 }
75
76 public final Object nullSafeGet(ResultSet rs, String name) throws HibernateException, SQLException {
77
78 Object value = get(rs, name);
79 if ( value==null || rs.wasNull() ) {
80 if (IS_TRACE_ENABLED) {
81 LogFactory.getLog( getClass() ).trace("returning null as column: " + name);
82 }
83 return null;
84 }
85 else {
86 if (IS_TRACE_ENABLED) {
87 LogFactory.getLog( getClass() ).trace( "returning '" + toString(value) + "' as column: " + name);
88 }
89 return value;
90 }
91 }
92
93 public final Object nullSafeGet(ResultSet rs, String name, SessionImplementor session, Object owner)
94 throws HibernateException, SQLException {
95 return nullSafeGet(rs, name);
96 }
97
98 public final String toXMLString(Object value, SessionFactoryImplementor pc) throws HibernateException {
99 return toString(value);
100 }
101
102 public final Object fromXMLString(String xml, Mapping factory) throws HibernateException {
103 return xml==null || xml.length()==0 ? null : fromStringValue(xml);
104 }
105
106 public final int getColumnSpan(Mapping session) {
107 return 1;
108 }
109
110 public final int[] sqlTypes(Mapping session) {
111 return new int[] { sqlType() };
112 }
113
114 public final boolean isEqual(Object x, Object y, EntityMode entityMode) {
115 return isEqual(x, y);
116 }
117
118 public boolean isEqual(Object x, Object y) {
119 return EqualsHelper.equals(x, y);
120 }
121
122 public String toLoggableString(Object value, SessionFactoryImplementor factory) {
123 return value==null ? "null" : toString(value);
124 }
125
126 public Object fromXMLNode(Node xml, Mapping factory) throws HibernateException {
127 return fromXMLString( xml.getText(), factory );
128 }
129
130 public void setToXMLNode(Node xml, Object value, SessionFactoryImplementor factory) throws HibernateException {
131 xml.setText( toXMLString(value, factory) );
132 }
133
134 public boolean[] toColumnNullness(Object value, Mapping mapping) {
135 return value==null ? ArrayHelper.FALSE : ArrayHelper.TRUE;
136 }
137
138 }
139 |
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