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Java > Open Source Codes > spoon > support > query > FilteringOperator


1 package spoon.support.query;
2
3 /**
4  * This enumeration defines the possible composition operators for filters. It
5  * is used in {@link spoon.support.query.CompositeFilter}.
6  *
7  * @see spoon.reflect.visitor.Filter
8  */
9 public enum FilteringOperator {
10
11     /**
12      * Defines the union of several filters: it matches if one of the filters
13      * matches.
14      */
15     UNION,
16     /**
17      * Defines the intersection of several filters: it matches if all the
18      * filters match.
19      */
20     INTERSECTION,
21     /**
22      * Defines the substraction of several filters to one filter: it matches if
23      * the first filter matches and all the others do not match.
24      */
25     SUBSTRACTION
26
27 }
28
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