001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.server.cache;
030:
031: import com.caucho.config.types.Bytes;
032: import com.caucho.server.webapp.WebApp;
033: import com.caucho.vfs.Path;
034:
035: import javax.servlet.FilterChain;
036:
037: /**
038: * Cached response.
039: */
040: abstract public class AbstractCache {
041: /**
042: * Sets the path to the cache directory.
043: */
044: abstract public void setPath(Path path);
045:
046: /**
047: * Returns the path from the cache directory.
048: */
049: abstract public Path getPath();
050:
051: /**
052: * Sets the disk size of the cache
053: */
054: abstract public void setDiskSize(Bytes size);
055:
056: /**
057: * Sets the max entry size of the cache
058: */
059: abstract public int getMaxEntrySize();
060:
061: /**
062: * Set true if enabled.
063: */
064: abstract public void setEnable(boolean isEnabled);
065:
066: /**
067: * Return true if enabled.
068: */
069: abstract public boolean isEnable();
070:
071: /**
072: * Sets the max number of entries.
073: */
074: abstract public void setEntries(int entries);
075:
076: /**
077: * Sets the path to the cache directory (backwards compatibility).
078: */
079: abstract public void setDir(Path path);
080:
081: /**
082: * Sets the size of the the cache (backwards compatibility).
083: */
084: abstract public void setSize(Bytes size);
085:
086: /**
087: * Creates the filter.
088: */
089: abstract public FilterChain createFilterChain(FilterChain next,
090: WebApp app);
091:
092: /**
093: * Clears the cache.
094: */
095: abstract public void clear();
096:
097: /**
098: * Returns the hit count.
099: */
100: abstract public long getHitCount();
101:
102: /**
103: * Returns the miss count.
104: */
105: abstract public long getMissCount();
106:
107: /**
108: * Returns the memory block hit count.
109: */
110: abstract public long getMemoryBlockHitCount();
111:
112: /**
113: * Returns the memory block miss count.
114: */
115: abstract public long getMemoryBlockMissCount();
116: }
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