Source code: org/apache/hivemind/schema/rules/CreateObjectRule.java
1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.schema.rules;
16
17 import org.apache.hivemind.Element;
18 import org.apache.hivemind.schema.SchemaProcessor;
19 import org.apache.hivemind.util.InstanceCreationUtils;
20
21 /**
22 * Basic {@link org.apache.hivemind.schema.Rule} for creating a new object. Created from the the
23 * <code><create-object></code> element. Generally, this is the first rule in a sequence of
24 * rules.
25 *
26 * @author Howard Lewis Ship
27 */
28 public class CreateObjectRule extends BaseRule
29 {
30 private String _className;
31
32 public CreateObjectRule()
33 {
34 }
35
36 public CreateObjectRule(String className)
37 {
38 _className = className;
39 }
40
41 /**
42 * Creates the new object and pushes it onto the processor's stack. If the object implement
43 * {@link org.apache.hivemind.LocationHolder} then the {@link org.apache.hivemind.Location} of
44 * the element is assigned to the object.
45 */
46 public void begin(SchemaProcessor processor, Element element)
47 {
48 Object object = InstanceCreationUtils.createInstance(
49 processor.getDefiningModule(),
50 _className,
51 element.getLocation());
52
53 processor.push(object);
54 }
55
56 /**
57 * Pops the object off of the processor's stack.
58 */
59 public void end(SchemaProcessor processor, Element element)
60 {
61 processor.pop();
62 }
63
64 public String getClassName()
65 {
66 return _className;
67 }
68
69 public void setClassName(String string)
70 {
71 _className = string;
72 }
73
74 }