Source Code Cross Referenced for PoolEvent.java in  » ERP-CRM-Financial » SourceTap-CRM » org » ofbiz » minerva » pool » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » SourceTap CRM » org.ofbiz.minerva.pool 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * Licensed under the X license (see http://www.x.org/terms.htm)
03:         */
04:        package org.ofbiz.minerva.pool;
05:
06:        import java.util.EventObject;
07:
08:        /**
09:         * An event caused by an object in a pool.  The event indicates that the
10:         * object was used, closed, or had an error occur.  The typical response is
11:         * to update the last used time in the pool for used events, and return the
12:         * object to the pool for closed or error events.
13:         *
14:         * @author Aaron Mulder (ammulder@alumni.princeton.edu)
15:         */
16:        public class PoolEvent extends EventObject {
17:
18:            /**
19:             * The object has been closed and should be returned to the pool.  Note this
20:             * is not a final sort of closing - the object must still be able to be
21:             * returned to the pool and reused.
22:             */
23:            public final static int OBJECT_CLOSED = -8986432;
24:            /**
25:             * Indicates that an error occured with the object.  The object will be
26:             * returned to the pool, since there will presumably be an exception
27:             * thrown that precludes the client from closing it or returning it
28:             * normally.  This should not be used for final or destructive errors - the
29:             * object must stil be able to be returned to the pool and reused.
30:             */
31:            public final static int OBJECT_ERROR = -8986433;
32:            /**
33:             * Indicates that the object was used, and its timestamp should be updated
34:             * accordingly (if the pool tracks timestamps).
35:             */
36:            public final static int OBJECT_USED = -8986434;
37:
38:            private int type;
39:            private boolean catastrophic = false;
40:
41:            /**
42:             * Create a new event.
43:             * @param source The source must be the object that was returned from the
44:             *        getObject method of the pool - the pool will use the source for
45:             *        some purpose depending on the type, so it cannot be an arbitrary
46:             *        object.
47:             * @param type The event type.
48:             */
49:            public PoolEvent(Object source, int type) {
50:                super (source);
51:                if (type != OBJECT_CLOSED && type != OBJECT_ERROR
52:                        && type != OBJECT_USED)
53:                    throw new IllegalArgumentException("Invalid event type!");
54:                this .type = type;
55:            }
56:
57:            /**
58:             * Gets the event type.
59:             * @see #OBJECT_CLOSED
60:             * @see #OBJECT_USED
61:             * @see #OBJECT_ERROR
62:             */
63:            public int getType() {
64:                return type;
65:            }
66:
67:            /**
68:             * Gets whether an object error was so bad that the object should not
69:             * be reused by the pool.  This is meaningful for error events only.
70:             */
71:            public boolean isCatastrophic() {
72:                return catastrophic;
73:            }
74:
75:            /**
76:             * Marks this as an error so severe that the object should not be reused by
77:             * the pool.
78:             */
79:            public void setCatastrophic() {
80:                catastrophic = true;
81:            }
82:        }
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