crossley 2003/12/11 18:01:16
Modified: src/blocks/scratchpad/java/org/apache/cocoon/util
SoftSourceCache.java
Log:
Fix dos2unix line-endings.
Revision Changes Path
1.2 +160 -160
cocoon-2.1/src/blocks/scratchpad/java/org/apache/cocoon/util/SoftSourceCache.java
Index: SoftSourceCache.java
===================================================================
RCS file:
/home/cvs/cocoon-2.1/src/blocks/scratchpad/java/org/apache/cocoon/util/SoftSourceCache.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- SoftSourceCache.java 9 Nov 2003 13:33:24 -0000 1.1
+++ SoftSourceCache.java 12 Dec 2003 02:01:16 -0000 1.2
@@ -1,160 +1,160 @@
-/*
-
- ============================================================================
- The Apache Software License, Version 1.1
- ============================================================================
-
- Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without modifica-
- tion, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the
documentation
- and/or other materials provided with the distribution.
-
- 3. The end-user documentation included with the redistribution, if any, must
- include the following acknowledgment: "This product includes
software
- developed by the Apache Software Foundation
(http://www.apache.org/)."
- Alternately, this acknowledgment may appear in the software itself,
if
- and wherever such third-party acknowledgments normally appear.
-
- 4. The names "Apache Cocoon" and "Apache Software Foundation" must not be
- used to endorse or promote products derived from this software
without
- prior written permission. For written permission, please contact
- [EMAIL PROTECTED]
-
- 5. Products derived from this software may not be called "Apache", nor may
- "Apache" appear in their name, without prior written permission of
the
- Apache Software Foundation.
-
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- This software consists of voluntary contributions made by many individuals
- on behalf of the Apache Software Foundation and was originally created by
- Stefano Mazzocchi <[EMAIL PROTECTED]>. For more information on the Apache
- Software Foundation, please see <http://www.apache.org/>.
-
-*/
-package org.apache.cocoon.util;
-
-import java.io.IOException;
-import java.net.MalformedURLException;
-import java.util.Collections;
-import java.util.Map;
-
-import org.apache.commons.collections.ReferenceMap;
-import org.apache.excalibur.source.Source;
-import org.apache.excalibur.source.SourceResolver;
-import org.apache.excalibur.source.SourceValidity;
-
-/**
- * Cache for objects created from a source. Objects and keys
- * are held using [EMAIL PROTECTED] java.lang.ref.SoftReference} and are
- * thus cleanable by the garbage collector if the VM is low on
- * memory. If an object cannot be found in the cache or the
- * source's validity has expired, the source is reread and the
- * object is recreated using the registered
- * [EMAIL PROTECTED] org.apache.cocoon.util.SourceReloader}.
- *
- * @since 2.1.4
- * @author <a href="mailto:[EMAIL PROTECTED]">Christian Haul</a>
- * @version CVS $Id$
- */
-public class SoftSourceCache implements SourceCache {
-
- /** Object cache. */
- Map objectCache = null;
- /** Callback for object reloading. */
- SourceReloader reloader = null;
-
- /**
- * Initialize this instance. Create a new cache.
- */
- private synchronized void init() {
- if (this.objectCache == null)
- this.objectCache =
- Collections.synchronizedMap(
- new ReferenceMap(ReferenceMap.SOFT,
ReferenceMap.SOFT));
- }
-
- /*
- * (non-Javadoc)
- * @see
org.apache.cocoon.util.SourceCache#register(org.apache.cocoon.util.SourceReloader)
- */
- public void register(SourceReloader reloader) {
- this.reloader = reloader;
- }
-
- /*
- * (non-Javadoc)
- * @see
org.apache.cocoon.util.SourceCache#getObject(org.apache.excalibur.source.SourceResolver,
java.lang.String, java.lang.Object)
- */
- public Object getObject(SourceResolver resolver, Object key, String
uri, Object parameter)
- throws MalformedURLException, IOException {
-
- Object result = null;
- if (this.objectCache == null)
- init();
- CacheEntry cacheEntry = (CacheEntry) this.objectCache.get(key);
- if (cacheEntry != null) {
- SourceValidity previous = cacheEntry.validity;
- Source source = null;
- switch (previous.isValid()) {
- case SourceValidity.VALID:
- result = cacheEntry.object;
- break;
- case SourceValidity.UNKNOWN:
- source = resolver.resolveURI(uri);
- SourceValidity fresh =
source.getValidity();
- switch (previous.isValid(fresh)){
- case SourceValidity.VALID:
- result =
cacheEntry.object;
- break;
- case SourceValidity.UNKNOWN:
- case SourceValidity.INVALID:
- result =
this.reloader.reload(source, parameter);
-
this.objectCache.put(key, new CacheEntry(fresh, result));
- break;
- }
- resolver.release(source);
- break;
- case SourceValidity.INVALID:
- source = resolver.resolveURI(uri);
- result = this.reloader.reload(source,
parameter);
- this.objectCache.put(uri, new
CacheEntry(source.getValidity(), result));
- resolver.release(source);
- break;
- }
- }
- return result;
- }
-
- /**
- * Private helper to hold source validities and cached objects.
- * @author <a href="mailto:[EMAIL PROTECTED]">Christian Haul</a>
- */
- private class CacheEntry {
- public SourceValidity validity = null;
- public Object object = null;
-
- public CacheEntry(SourceValidity val, Object obj) {
- this.validity = val;
- this.object = obj;
- }
-
- }
-
-}
+/*
+
+ ============================================================================
+ The Apache Software License, Version 1.1
+ ============================================================================
+
+ Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modifica-
+ tion, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the
documentation
+ and/or other materials provided with the distribution.
+
+ 3. The end-user documentation included with the redistribution, if any, must
+ include the following acknowledgment: "This product includes
software
+ developed by the Apache Software Foundation
(http://www.apache.org/)."
+ Alternately, this acknowledgment may appear in the software itself,
if
+ and wherever such third-party acknowledgments normally appear.
+
+ 4. The names "Apache Cocoon" and "Apache Software Foundation" must not be
+ used to endorse or promote products derived from this software
without
+ prior written permission. For written permission, please contact
+ [EMAIL PROTECTED]
+
+ 5. Products derived from this software may not be called "Apache", nor may
+ "Apache" appear in their name, without prior written permission of
the
+ Apache Software Foundation.
+
+ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
+ DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ This software consists of voluntary contributions made by many individuals
+ on behalf of the Apache Software Foundation and was originally created by
+ Stefano Mazzocchi <[EMAIL PROTECTED]>. For more information on the Apache
+ Software Foundation, please see <http://www.apache.org/>.
+
+*/
+package org.apache.cocoon.util;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.util.Collections;
+import java.util.Map;
+
+import org.apache.commons.collections.ReferenceMap;
+import org.apache.excalibur.source.Source;
+import org.apache.excalibur.source.SourceResolver;
+import org.apache.excalibur.source.SourceValidity;
+
+/**
+ * Cache for objects created from a source. Objects and keys
+ * are held using [EMAIL PROTECTED] java.lang.ref.SoftReference} and are
+ * thus cleanable by the garbage collector if the VM is low on
+ * memory. If an object cannot be found in the cache or the
+ * source's validity has expired, the source is reread and the
+ * object is recreated using the registered
+ * [EMAIL PROTECTED] org.apache.cocoon.util.SourceReloader}.
+ *
+ * @since 2.1.4
+ * @author <a href="mailto:[EMAIL PROTECTED]">Christian Haul</a>
+ * @version CVS $Id$
+ */
+public class SoftSourceCache implements SourceCache {
+
+ /** Object cache. */
+ Map objectCache = null;
+ /** Callback for object reloading. */
+ SourceReloader reloader = null;
+
+ /**
+ * Initialize this instance. Create a new cache.
+ */
+ private synchronized void init() {
+ if (this.objectCache == null)
+ this.objectCache =
+ Collections.synchronizedMap(
+ new ReferenceMap(ReferenceMap.SOFT,
ReferenceMap.SOFT));
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see
org.apache.cocoon.util.SourceCache#register(org.apache.cocoon.util.SourceReloader)
+ */
+ public void register(SourceReloader reloader) {
+ this.reloader = reloader;
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see
org.apache.cocoon.util.SourceCache#getObject(org.apache.excalibur.source.SourceResolver,
java.lang.String, java.lang.Object)
+ */
+ public Object getObject(SourceResolver resolver, Object key, String
uri, Object parameter)
+ throws MalformedURLException, IOException {
+
+ Object result = null;
+ if (this.objectCache == null)
+ init();
+ CacheEntry cacheEntry = (CacheEntry) this.objectCache.get(key);
+ if (cacheEntry != null) {
+ SourceValidity previous = cacheEntry.validity;
+ Source source = null;
+ switch (previous.isValid()) {
+ case SourceValidity.VALID:
+ result = cacheEntry.object;
+ break;
+ case SourceValidity.UNKNOWN:
+ source = resolver.resolveURI(uri);
+ SourceValidity fresh =
source.getValidity();
+ switch (previous.isValid(fresh)){
+ case SourceValidity.VALID:
+ result =
cacheEntry.object;
+ break;
+ case SourceValidity.UNKNOWN:
+ case SourceValidity.INVALID:
+ result =
this.reloader.reload(source, parameter);
+
this.objectCache.put(key, new CacheEntry(fresh, result));
+ break;
+ }
+ resolver.release(source);
+ break;
+ case SourceValidity.INVALID:
+ source = resolver.resolveURI(uri);
+ result = this.reloader.reload(source,
parameter);
+ this.objectCache.put(uri, new
CacheEntry(source.getValidity(), result));
+ resolver.release(source);
+ break;
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Private helper to hold source validities and cached objects.
+ * @author <a href="mailto:[EMAIL PROTECTED]">Christian Haul</a>
+ */
+ private class CacheEntry {
+ public SourceValidity validity = null;
+ public Object object = null;
+
+ public CacheEntry(SourceValidity val, Object obj) {
+ this.validity = val;
+ this.object = obj;
+ }
+
+ }
+
+}
