01: package org.drools.lang.descr;
02:
03: /*
04: * Copyright 2005 JBoss Inc
05: *
06: * Licensed under the Apache License, Version 2.0 (the "License");
07: * you may not use this file except in compliance with the License.
08: * You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing, software
13: * distributed under the License is distributed on an "AS IS" BASIS,
14: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: * See the License for the specific language governing permissions and
16: * limitations under the License.
17: */
18:
19: import java.util.ArrayList;
20: import java.util.List;
21:
22: public class ExistsDescr extends BaseDescr implements
23: ConditionalElementDescr {
24:
25: /**
26: *
27: */
28: private static final long serialVersionUID = 400L;
29: private final List descrs = new ArrayList(1);
30:
31: public ExistsDescr() {
32: }
33:
34: public ExistsDescr(final BaseDescr baseDescr) {
35: addDescr(baseDescr);
36: }
37:
38: public void addDescr(final BaseDescr baseDescr) {
39: this .descrs.add(baseDescr);
40: }
41:
42: public void insertBeforeLast(final Class clazz,
43: final BaseDescr baseDescr) {
44: throw new UnsupportedOperationException(
45: "Can't add descriptors to " + this .getClass().getName());
46: }
47:
48: public List getDescrs() {
49: return this .descrs;
50: }
51:
52: public void addOrMerge(BaseDescr baseDescr) {
53: if (baseDescr instanceof ExistsDescr) {
54: this .descrs.addAll(((ExistsDescr) baseDescr).getDescrs());
55: } else {
56: this.descrs.add(baseDescr);
57: }
58: }
59:
60: }
|