01: package org.drools.base;
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 org.drools.base.evaluators.Operator;
20: import org.drools.spi.Evaluator;
21:
22: /**
23: * BaseEvaluator is an Object Comparator that is operator aware
24: *
25: * @author mproctor
26: *
27: */
28: public abstract class BaseEvaluator implements Evaluator {
29:
30: private final Operator operator;
31:
32: private final ValueType type;
33:
34: public BaseEvaluator(final ValueType type, final Operator operator) {
35: this .type = type;
36: this .operator = operator;
37: }
38:
39: public Operator getOperator() {
40: return this .operator;
41: }
42:
43: public ValueType getValueType() {
44: return this .type;
45: }
46:
47: public boolean equals(final Object object) {
48: if (this == object) {
49: return true;
50: }
51: if (object == null || !(object instanceof BaseEvaluator)) {
52: return false;
53: }
54:
55: final Evaluator other = (Evaluator) object;
56: return this .getOperator() == other.getOperator()
57: && this .getValueType() == other.getValueType();
58: }
59:
60: public int hashCode() {
61: return (this.getValueType().hashCode())
62: ^ (this.getOperator().hashCode())
63: ^ (this.getClass().hashCode());
64: }
65:
66: }
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