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| Rev | Author | Line No. | Line |
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| 33 | PointedEar | 1 | /* |
| 2 | * Hibernate, Relational Persistence for Idiomatic Java |
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| 3 | * |
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| 4 | * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as |
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| 5 | * indicated by the @author tags or express copyright attribution |
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| 6 | * statements applied by the authors. All third-party contributions are |
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| 7 | * distributed under license by Red Hat Middleware LLC. |
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| 8 | * |
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| 9 | * This copyrighted material is made available to anyone wishing to use, modify, |
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| 10 | * copy, or redistribute it subject to the terms and conditions of the GNU |
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| 11 | * Lesser General Public License, as published by the Free Software Foundation. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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| 15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License |
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| 16 | * for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public License |
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| 19 | * along with this distribution; if not, write to: |
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| 20 | * Free Software Foundation, Inc. |
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| 21 | * 51 Franklin Street, Fifth Floor |
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| 22 | * Boston, MA 02110-1301 USA |
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| 23 | * |
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| 24 | */ |
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| 25 | package org.hibernate; |
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| 26 | |||
| 27 | import java.io.Serializable; |
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| 28 | import java.util.HashMap; |
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| 29 | import java.util.Map; |
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| 30 | |||
| 31 | /** |
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| 32 | * Controls how the session interacts with the second-level |
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| 33 | * cache and query cache. |
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| 34 | * |
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| 35 | * @see Session#setCacheMode(CacheMode) |
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| 36 | * @author Gavin King |
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| 37 | */ |
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| 38 | public final class CacheMode implements Serializable { |
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| 39 | private final String name; |
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| 40 | private final boolean isPutEnabled; |
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| 41 | private final boolean isGetEnabled; |
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| 42 | private static final Map INSTANCES = new HashMap(); |
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| 43 | |||
| 44 | private CacheMode(String name, boolean isPutEnabled, boolean isGetEnabled) { |
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| 45 | this.name=name; |
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| 46 | this.isPutEnabled = isPutEnabled; |
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| 47 | this.isGetEnabled = isGetEnabled; |
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| 48 | } |
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| 49 | public String toString() { |
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| 50 | return name; |
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| 51 | } |
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| 52 | public boolean isPutEnabled() { |
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| 53 | return isPutEnabled; |
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| 54 | } |
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| 55 | public boolean isGetEnabled() { |
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| 56 | return isGetEnabled; |
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| 57 | } |
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| 58 | /** |
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| 59 | * The session may read items from the cache, and add items to the cache |
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| 60 | */ |
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| 61 | public static final CacheMode NORMAL = new CacheMode("NORMAL", true, true); |
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| 62 | /** |
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| 63 | * The session will never interact with the cache, except to invalidate |
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| 64 | * cache items when updates occur |
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| 65 | */ |
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| 66 | public static final CacheMode IGNORE = new CacheMode("IGNORE", false, false); |
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| 67 | /** |
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| 68 | * The session may read items from the cache, but will not add items, |
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| 69 | * except to invalidate items when updates occur |
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| 70 | */ |
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| 71 | public static final CacheMode GET = new CacheMode("GET", false, true); |
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| 72 | /** |
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| 73 | * The session will never read items from the cache, but will add items |
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| 74 | * to the cache as it reads them from the database. |
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| 75 | */ |
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| 76 | public static final CacheMode PUT = new CacheMode("PUT", true, false); |
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| 77 | |||
| 78 | /** |
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| 79 | * The session will never read items from the cache, but will add items |
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| 80 | * to the cache as it reads them from the database. In this mode, the |
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| 81 | * effect of <tt>hibernate.cache.use_minimal_puts</tt> is bypassed, in |
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| 82 | * order to <em>force</em> a cache refresh |
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| 83 | */ |
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| 84 | public static final CacheMode REFRESH = new CacheMode("REFRESH", true, false); |
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| 85 | |||
| 86 | static { |
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| 87 | INSTANCES.put( NORMAL.name, NORMAL ); |
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| 88 | INSTANCES.put( IGNORE.name, IGNORE ); |
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| 89 | INSTANCES.put( GET.name, GET ); |
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| 90 | INSTANCES.put( PUT.name, PUT ); |
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| 91 | INSTANCES.put( REFRESH.name, REFRESH ); |
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| 92 | } |
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| 93 | |||
| 94 | private Object readResolve() { |
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| 95 | return INSTANCES.get( name ); |
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| 96 | } |
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| 97 | |||
| 98 | public static CacheMode parse(String name) { |
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| 99 | return ( CacheMode ) INSTANCES.get( name ); |
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| 100 | } |
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| 101 | } |