gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dataTypes / impl / DefaultDataType.java @ 630
History | View | Annotate | Download (2.56 KB)
1 |
package org.gvsig.tools.dataTypes.impl; |
---|---|
2 |
|
3 |
import java.text.MessageFormat; |
4 |
|
5 |
import org.slf4j.Logger; |
6 |
import org.slf4j.LoggerFactory; |
7 |
|
8 |
import org.gvsig.tools.dataTypes.CoercionException; |
9 |
import org.gvsig.tools.dataTypes.DataType; |
10 |
import org.gvsig.tools.dataTypes.DataTypes; |
11 |
import org.gvsig.tools.dataTypes.DataTypesManager.Coercion; |
12 |
|
13 |
public class DefaultDataType implements DataType { |
14 |
|
15 |
private static final Logger LOG = LoggerFactory.getLogger(DefaultDataTypesManager.class); |
16 |
|
17 |
private Coercion coercion;
|
18 |
private Class defaultClass; |
19 |
private String subtype; |
20 |
private int type; |
21 |
private String name; |
22 |
|
23 |
DefaultDataType(int type, String subtype, String name, Class defaultClass, Coercion coercion) { |
24 |
|
25 |
if( name == null ) { |
26 |
LOG.trace("Can't register null type name for type {}.", new Object[] { Integer.toHexString(type).toUpperCase()}); |
27 |
throw new IllegalArgumentException(); |
28 |
} |
29 |
this.type = type;
|
30 |
this.subtype = subtype;
|
31 |
this.name = name;
|
32 |
this.defaultClass = defaultClass;
|
33 |
this.coercion = coercion;
|
34 |
} |
35 |
|
36 |
public Object coerce(Object value) throws CoercionException { |
37 |
// http://en.wikipedia.org/wiki/Type_conversion#Implicit_type_conversion
|
38 |
|
39 |
if( this.coercion != null ) { |
40 |
return this.coercion.coerce(value); |
41 |
} |
42 |
if( defaultClass == null ) { |
43 |
return value; // ?? |
44 |
} |
45 |
if( defaultClass.isInstance(value) ) {
|
46 |
return value;
|
47 |
} |
48 |
throw new CoercionException(); |
49 |
} |
50 |
|
51 |
public Coercion getCoercion() {
|
52 |
return this.coercion; |
53 |
} |
54 |
|
55 |
public Class getDefaultClass() { |
56 |
return this.defaultClass; |
57 |
} |
58 |
|
59 |
public String getSubtype() { |
60 |
return this.subtype; |
61 |
} |
62 |
|
63 |
public int getType() { |
64 |
return this.type; |
65 |
} |
66 |
|
67 |
public String getName() { |
68 |
return this.name; |
69 |
} |
70 |
|
71 |
public boolean isContainer() { |
72 |
return (type & DataTypes.CONTAINER) == DataTypes.CONTAINER;
|
73 |
} |
74 |
|
75 |
public boolean isObject() { |
76 |
return (type & DataTypes.OBJECT) == DataTypes.OBJECT;
|
77 |
} |
78 |
|
79 |
public boolean isDynObject() { |
80 |
return type == DataTypes.DYNOBJECT;
|
81 |
} |
82 |
|
83 |
public void setCoercion(Coercion coercion) { |
84 |
this.coercion = coercion;
|
85 |
LOG.trace("Add coercion operation for data type {}.", new Object[] { name }); |
86 |
} |
87 |
|
88 |
public String toString() { |
89 |
return MessageFormat.format( |
90 |
"type=0x{0};subtype={1};name={2};class={3};coercion={4}",
|
91 |
new Object[] { |
92 |
Integer.toHexString(type).toUpperCase(),
|
93 |
subtype, |
94 |
name, |
95 |
defaultClass==null? null:defaultClass.getName(), |
96 |
coercion==null? null:coercion.getClass().getName() |
97 |
} |
98 |
); |
99 |
} |
100 |
|
101 |
public boolean isNumeric() { |
102 |
if( type == DataTypes.DOUBLE ||
|
103 |
type == DataTypes.FLOAT || |
104 |
type == DataTypes.INT || |
105 |
type == DataTypes.LONG){ |
106 |
return true; |
107 |
} |
108 |
return false; |
109 |
} |
110 |
|
111 |
} |