summaryrefslogtreecommitdiffstats
path: root/branches/sca-java-1.2.1/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseDataBinding.java
blob: 87b4a79450fa97e20df9dc659da0ea329451b3a0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.    
 */
package org.apache.tuscany.sca.databinding.impl;

import java.lang.annotation.Annotation;

import org.apache.tuscany.sca.databinding.DataBinding;
import org.apache.tuscany.sca.databinding.SimpleTypeMapper;
import org.apache.tuscany.sca.databinding.WrapperHandler;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import org.apache.tuscany.sca.interfacedef.util.XMLType;

/**
 * Base Implementation of DataBinding
 * 
 * @version $Rev$ $Date$
 */
public abstract class BaseDataBinding implements DataBinding {

    private Class<?> baseType;

    private String name;
    private String[] aliases;

    /**
     * Create a databinding with the base java type whose name will be used as
     * the name of the databinding
     * 
     * @param baseType The base java class or interface representing the
     *            databinding, for example, org.w3c.dom.Node
     */
    protected BaseDataBinding(Class<?> baseType) {
        this(baseType.getName(), null, baseType);
    }

    /**
     * Create a databinding with the name and base java type
     * 
     * @param name The name of the databinding
     * @param baseType The base java class or interface representing the
     *            databinding, for example, org.w3c.dom.Node
     */
    protected BaseDataBinding(String name, Class<?> baseType) {
        this(name, null, baseType);
    }

    /**
     * Create a databinding with the name and base java type
     * 
     * @param name The name of the databinding
     * @param aliases The aliases of the databinding
     * @param baseType The base java class or interface representing the
     *            databinding, for example, org.w3c.dom.Node
     */
    protected BaseDataBinding(String name, String[] aliases, Class<?> baseType) {
        this.name = name;
        this.baseType = baseType;
        this.aliases = aliases;
    }

    @SuppressWarnings("unchecked")
    public boolean introspect(DataType type, Annotation[] annotations) {
        assert type != null;
        Class cls = type.getPhysical();
        if (baseType != null && baseType.isAssignableFrom(cls)) {
            type.setDataBinding(getName());
            if (type.getLogical() == null) {
                type.setLogical(XMLType.UNKNOWN);
            }
            return true;
        }
        return false;
    }

    public DataType introspect(Object value) {
        if (value == null) {
            return null;
        } else {
            DataType<Class> dataType = new DataTypeImpl<Class>(value.getClass(), value.getClass());
            if (introspect(dataType, null)) {
                return dataType;
            } else {
                return null;
            }
        }
    }

    public final String getName() {
        return name;
    }

    /**
     * @see org.apache.tuscany.sca.databinding.DataBinding#getWrapperHandler()
     */
    public WrapperHandler getWrapperHandler() {
        return null;
    }

    public Object copy(Object object) {
        return object;
    }

    public SimpleTypeMapper getSimpleTypeMapper() {
        return new SimpleTypeMapperImpl();
    }

    public String[] getAliases() {
        return aliases;
    }

}