Author: elecharny
Date: Thu Aug 9 17:32:04 2012
New Revision: 1371327
URL: http://svn.apache.org/viewvc?rev=1371327&view=rev
Log:
Added the BTreeConfiguration so that we can create a BTree with more options.
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/BTreeConfiguration.java
Added:
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/BTreeConfiguration.java
URL:
http://svn.apache.org/viewvc/labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/BTreeConfiguration.java?rev=1371327&view=auto
==============================================================================
---
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/BTreeConfiguration.java
(added)
+++
labs/mavibot/trunk/mavibot/src/main/java/org/apache/mavibot/btree/BTreeConfiguration.java
Thu Aug 9 17:32:04 2012
@@ -0,0 +1,316 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.mavibot.btree;
+
+
+import java.util.Comparator;
+
+import org.apache.mavibot.btree.serializer.Serializer;
+
+
+/**
+ * The B+Tree Configuration. This class can be used to store all the
configurable
+ * parameters used by the BTree class
+ *
+ * @author <a href="mailto:[email protected]";>Mavibot labs Project</a>
+ *
+ * @param <K> The type for the keys
+ * @param <V> The type for the stored values
+ */
+public class BTreeConfiguration<K, V>
+{
+ /** Number of entries in each Page. */
+ private int pageSize = BTree.DEFAULT_PAGE_SIZE;
+
+ /** Comparator used to order entries. */
+ private Comparator<K> comparator;
+
+ /** The Key and Value serializer used for this tree. If none is provided,
+ * the BTree will deduce the serializer to use from the generic type, and
+ * use the default Java serialization */
+ private Serializer<K, V> serializer;
+
+ /** The path where the BTree file will be stored. Default to the local
+ * temporary directory.
+ */
+ private String filePath;
+
+ /**
+ * The BTree file's name. Default to "mavibot".
+ */
+ private String filePrefix = "mavibot";
+
+ /**
+ * The BTree file's suffix. Default to "data".
+ */
+ private String fileSuffix = "data";
+
+ /**
+ * The maximum delay to wait before a revision is considered as unused.
+ * This delay is necessary so that a read that does not ends does not
+ * hold a revision in memory forever.
+ * The default value is 10000 (10 seconds). If the value is 0 or below,
+ * the delay is considered as infinite
+ */
+ private long readTimeOut = 10 * 1000L;
+
+ /** The maximal size of the journal. When this size is reached, the tree
is
+ * flushed on disk.
+ * The default size is 10 Mb
+ */
+ private long journalSize = 10 * 1024 * 1024L;
+
+ /** The path where the journal will be stored. Default to the local
+ * temporary directory.
+ */
+ private String journalPath;
+
+ /**
+ * The journal's name. Default to "mavibot".
+ */
+ private String journalPrefix = "mavibot";
+
+ /**
+ * The journal's suffix. Default to "log".
+ */
+ private String journalSuffix = "log";
+
+ /** The delay between two checkpoints. When we reach the maximum delay,
+ * the BTree is flushed on disk, but only if we have had some
modifications.
+ * The default value is 60 seconds.
+ */
+ private long checkPointDelay = 60 * 1000L;
+
+
+ /**
+ * @return the comparator
+ */
+ public Comparator<K> getComparator()
+ {
+ return comparator;
+ }
+
+
+ /**
+ * @param comparator the comparator to set
+ */
+ public void setComparator( Comparator<K> comparator )
+ {
+ this.comparator = comparator;
+ }
+
+
+ /**
+ * @return the pageSize
+ */
+ public int getPageSize()
+ {
+ return pageSize;
+ }
+
+
+ /**
+ * @param pageSize the pageSize to set
+ */
+ public void setPageSize( int pageSize )
+ {
+ this.pageSize = pageSize;
+ }
+
+
+ /**
+ * @return the serializer
+ */
+ public Serializer<K, V> getSerializer()
+ {
+ return serializer;
+ }
+
+
+ /**
+ * @param serializer the serializer to set
+ */
+ public void setSerializer( Serializer<K, V> serializer )
+ {
+ this.serializer = serializer;
+ }
+
+
+ /**
+ * @return the readTimeOut
+ */
+ public long getReadTimeOut()
+ {
+ return readTimeOut;
+ }
+
+
+ /**
+ * @param readTimeOut the readTimeOut to set
+ */
+ public void setReadTimeOut( long readTimeOut )
+ {
+ this.readTimeOut = readTimeOut;
+ }
+
+
+ /**
+ * @return the journalSize
+ */
+ public long getJournalSize()
+ {
+ return journalSize;
+ }
+
+
+ /**
+ * @param journalSize the journalSize to set
+ */
+ public void setJournalSize( long journalSize )
+ {
+ this.journalSize = journalSize;
+ }
+
+
+ /**
+ * @return the checkPointDelay
+ */
+ public long getCheckPointDelay()
+ {
+ return checkPointDelay;
+ }
+
+
+ /**
+ * @param checkPointDelay the checkPointDelay to set
+ */
+ public void setCheckPointDelay( long checkPointDelay )
+ {
+ this.checkPointDelay = checkPointDelay;
+ }
+
+
+ /**
+ * @return the filePath
+ */
+ public String getFilePath()
+ {
+ return filePath;
+ }
+
+
+ /**
+ * @param filePath the filePath to set
+ */
+ public void setFilePath( String filePath )
+ {
+ this.filePath = filePath;
+ }
+
+
+ /**
+ * @return the filePrefix
+ */
+ public String getFilePrefix()
+ {
+ return filePrefix;
+ }
+
+
+ /**
+ * @param filePrefix the filePrefix to set
+ */
+ public void setFilePrefix( String filePrefix )
+ {
+ this.filePrefix = filePrefix;
+ }
+
+
+ /**
+ * @return the fileSuffix
+ */
+ public String getFileSuffix()
+ {
+ return fileSuffix;
+ }
+
+
+ /**
+ * @param fileSuffix the fileSuffix to set
+ */
+ public void setFileSuffix( String fileSuffix )
+ {
+ this.fileSuffix = fileSuffix;
+ }
+
+
+ /**
+ * @return the journalPath
+ */
+ public String getJournalPath()
+ {
+ return journalPath;
+ }
+
+
+ /**
+ * @param journalPath the journalPath to set
+ */
+ public void setJournalPath( String journalPath )
+ {
+ this.journalPath = journalPath;
+ }
+
+
+ /**
+ * @return the journalPrefix
+ */
+ public String getJournalPrefix()
+ {
+ return journalPrefix;
+ }
+
+
+ /**
+ * @param journalPrefix the journalPrefix to set
+ */
+ public void setJournalPrefix( String journalPrefix )
+ {
+ this.journalPrefix = journalPrefix;
+ }
+
+
+ /**
+ * @return the journalSuffix
+ */
+ public String getJournalSuffix()
+ {
+ return journalSuffix;
+ }
+
+
+ /**
+ * @param journalSuffix the journalSuffix to set
+ */
+ public void setJournalSuffix( String journalSuffix )
+ {
+ this.journalSuffix = journalSuffix;
+ }
+}
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