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1 package net.sf.saxon.value;
2 import net.sf.saxon.expr.XPathContext;
3 import net.sf.saxon.trans.DynamicError;
4 import net.sf.saxon.trans.XPathException;
5 import net.sf.saxon.type.BuiltInAtomicType;
6 import net.sf.saxon.type.ExternalObjectType;
7 import net.sf.saxon.type.ItemType;
8 import net.sf.saxon.type.Type;
9 import net.sf.saxon.ConversionContext;
10
11
12
16
17 public class ObjectValue extends AtomicValue {
18 private Object  value;
19
20
23
24 public ObjectValue() {}
25
26
30
31 public ObjectValue(Object object) {
32 this.value = object;
33 }
34
35
38
39 public void setValue(Object value) {
40 this.value = value;
41 }
42
43
46
47 public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, ConversionContext conversion) {
48 switch(requiredType.getPrimitiveType()) {
49 case Type.ATOMIC:
50 case Type.OBJECT:
51 case Type.ITEM:
52 return this;
53 case Type.BOOLEAN:
54 return BooleanValue.get(
55 (value==null ? false : value.toString().length() > 0));
56 case Type.STRING:
57 return new StringValue(getStringValue());
58 case Type.UNTYPED_ATOMIC:
59 return new UntypedAtomicValue(getStringValue());
60 default:
61 return new StringValue(getStringValue()).convertPrimitive(requiredType, validate, conversion);
62 }
63 }
64
65
69
70 public String getStringValue() {
71 return (value==null ? "" : value.toString());
72 }
73
74
78
79 public ItemType getItemType() {
80 return new ExternalObjectType(value.getClass());
81 }
82
83
86
87 public Object getObject() {
88 return value;
89 }
90
91
95
96 public boolean equals(Object other) {
97 return this.value.equals(((ObjectValue)other).value);
98 }
99
100 public int hashCode() {
101 return value.hashCode();
102 }
103
104
107
108 public Object convertToJava(Class target, XPathContext context) throws XPathException {
109
110 if (value==null) return null;
111
112 if (target.isAssignableFrom(value.getClass())) {
113 return value;
114 } else if (target==Value.class || target==ObjectValue.class) {
115 return this;
116 } else if (target==boolean.class || target==Boolean .class) {
117 BooleanValue bval = (BooleanValue)convert(Type.BOOLEAN, context);
118 return Boolean.valueOf(bval.getBooleanValue());
119 } else if (target==String .class || target==CharSequence .class) {
120 return getStringValue();
121 } else if (target==double.class || target==Double .class) {
122 DoubleValue bval = (DoubleValue)convert(Type.DOUBLE, context);
123 return new Double (bval.getDoubleValue());
124 } else if (target==float.class || target==Float .class) {
125 DoubleValue bval = (DoubleValue)convert(Type.FLOAT, context);
126 return new Float (bval.getDoubleValue());
127 } else if (target==long.class || target==Long .class) {
128 IntegerValue bval = (IntegerValue)convert(Type.INTEGER, context);
129 return new Long (bval.longValue());
130 } else if (target==int.class || target==Integer .class) {
131 IntegerValue bval = (IntegerValue)convert(Type.INTEGER, context);
132 return new Integer ((int)bval.longValue());
133 } else if (target==short.class || target==Short .class) {
134 IntegerValue bval = (IntegerValue)convert(Type.INTEGER, context);
135 return new Short ((short)bval.longValue());
136 } else if (target==byte.class || target==Byte .class) {
137 IntegerValue bval = (IntegerValue)convert(Type.INTEGER, context);
138 return new Byte ((byte)bval.longValue());
139 } else if (target==char.class || target==Character .class) {
140 String s = getStringValue();
141 if (s.length()==1) {
142 return new Character (s.charAt(0));
143 } else {
144 throw new DynamicError("Cannot convert string to Java char unless length is 1");
145 }
146 } else {
147 throw new DynamicError("Conversion of external object to " + target.getName() +
148 " is not supported");
149 }
150 }
151
152 }
153
154
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