blob: c2d312b56d7a56ad09b347d7d6b7d013bf7223b3 (
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
|
/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.das.rdb.generator.impl;
import java.util.Collection;
import java.util.Iterator;
import org.apache.tuscany.das.rdb.Converter;
import org.apache.tuscany.das.rdb.Parameter;
import org.apache.tuscany.das.rdb.SDODataTypes;
import org.apache.tuscany.das.rdb.config.Table;
import org.apache.tuscany.das.rdb.config.wrapper.TableWrapper;
import org.apache.tuscany.das.rdb.impl.DeleteCommandImpl;
import org.apache.tuscany.das.rdb.impl.ParameterImpl;
import org.apache.tuscany.das.rdb.util.DebugUtil;
public class DeleteGenerator {
public static final DeleteGenerator instance = new DeleteGenerator();
private static final boolean debug = false;
public DeleteGenerator() {
super();
}
public String getDeleteStatement(Table t) {
TableWrapper table = new TableWrapper(t);
StringBuffer statement = new StringBuffer();
statement.append("delete from ");
statement.append(t.getName());
statement.append(" where ");
Iterator names = table.getPrimaryKeyNames().iterator();
Iterator properties = table.getPrimaryKeyProperties().iterator();
while (names.hasNext() && properties.hasNext()) {
String name = (String) names.next();
statement.append(name);
statement.append(" = ?");
if (names.hasNext() && properties.hasNext())
statement.append(" and ");
}
DebugUtil.debugln(getClass(), debug, statement.toString());
return statement.toString();
}
public Collection getDeleteParameters(Table table) {
TableWrapper wrapper = new TableWrapper(table);
return wrapper.getPrimaryKeyProperties();
}
public DeleteCommandImpl getDeleteCommand(Table t) {
DeleteCommandImpl deleteCommand = new DeleteCommandImpl(getDeleteStatement(t));
Iterator i = getDeleteParameters(t).iterator();
for(int idx=1; i.hasNext(); idx++) {
String property = (String) i.next();
Parameter p = new ParameterImpl();
p.setName(property);
p.setType(SDODataTypes.OBJECT);
p.setConverter(getConverter(t, property));
p.setIndex(idx);
deleteCommand.addParameter(p);
}
return deleteCommand;
}
private Converter getConverter(Table t, String name) {
TableWrapper tw = new TableWrapper(t);
String converter = tw.getConverter(name);
if ( converter != null ) {
try {
return (Converter) Class.forName(converter).newInstance();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
return null;
}
}
|
