01: // Copyright 2004, 2005 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // 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: private String _className;
30:
31: public CreateObjectRule() {
32: }
33:
34: public CreateObjectRule(String className) {
35: _className = className;
36: }
37:
38: /**
39: * Creates the new object and pushes it onto the processor's stack. If the object implement
40: * {@link org.apache.hivemind.LocationHolder} then the {@link org.apache.hivemind.Location} of
41: * the element is assigned to the object.
42: */
43: public void begin(SchemaProcessor processor, Element element) {
44: Object object = InstanceCreationUtils
45: .createInstance(processor.getDefiningModule(),
46: _className, element.getLocation());
47:
48: processor.push(object);
49: }
50:
51: /**
52: * Pops the object off of the processor's stack.
53: */
54: public void end(SchemaProcessor processor, Element element) {
55: processor.pop();
56: }
57:
58: public String getClassName() {
59: return _className;
60: }
61:
62: public void setClassName(String string) {
63: _className = string;
64: }
65:
66: }
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