01: package org.drools.spi;
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.io.Serializable;
20: import org.drools.reteoo.ReteTuple;
21: import org.drools.rule.Rule;
22:
23: public interface PropagationContext extends Serializable {
24:
25: public static final int ASSERTION = 0;
26: public static final int RETRACTION = 1;
27: public static final int MODIFICATION = 2;
28: public static final int RULE_ADDITION = 3;
29: public static final int RULE_REMOVAL = 4;
30:
31: public long getPropagationNumber();
32:
33: public Rule getRuleOrigin();
34:
35: public Activation getActivationOrigin();
36:
37: public int getType();
38:
39: public int getActiveActivations();
40:
41: public int getDormantActivations();
42:
43: public void addRetractedTuple(Rule rule, Activation activation);
44:
45: public Activation removeRetractedTuple(Rule rule, ReteTuple tuple);
46:
47: public void clearRetractedTuples();
48:
49: public void releaseResources();
50:
51: }
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