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From ste...@apache.org
Subject svn commit: r232308 [2/2] - in /incubator/jackrabbit/trunk/contrib/db-persistence: ./ applications/ applications/test/ applications/test/repository/ applications/test/repository/nodetypes/ applications/test/workspaces/ applications/test/workspaces/defa...
Date Fri, 12 Aug 2005 15:18:22 GMT
Added: incubator/jackrabbit/trunk/contrib/db-persistence/project.xml
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/project.xml?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/project.xml (added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/project.xml Fri Aug 12 08:18:07 2005
@@ -0,0 +1,164 @@
+<?xml version="1.0"?>
+
+<!--
+   Copyright 2004-2005 The Apache Software Foundation or its licensors,
+                       as applicable.
+
+   Licensed 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.
+  -->
+
+<project>
+    <!-- ====================================================================== -->
+    <!-- P R O J E C T  D E S C R I P T I O N                                   -->
+    <!-- ====================================================================== -->
+    <groupId>jackrabbit</groupId>
+    <artifactId>jackrabbit-db</artifactId>
+    <currentVersion>1.0-SNAPSHOT</currentVersion>
+    <name>Jackrabbit Simple JDBC-based Persistence</name>
+
+    <!-- ====================================================================== -->
+    <!-- D E P E N D E N C I E S                                                -->
+    <!-- ====================================================================== -->
+
+    <dependencies>
+        <!--
+          compile-time dependencies of the db persistence manager
+        -->
+        <dependency>
+            <groupId>jackrabbit</groupId>
+            <artifactId>jackrabbit-core</artifactId>
+            <version>${pom.currentVersion}</version>
+            <properties>
+                <eclipse.dependency>true</eclipse.dependency>
+            </properties>
+        </dependency>
+        <dependency>
+            <groupId>jackrabbit</groupId>
+            <artifactId>jackrabbit-commons</artifactId>
+            <version>${pom.currentVersion}</version>
+            <properties>
+                <eclipse.dependency>true</eclipse.dependency>
+            </properties>
+        </dependency>
+        <dependency>
+            <groupId>jsr170</groupId>
+            <artifactId>jcr</artifactId>
+            <version>1.0</version>
+            <url>http://jcp.org/en/jsr/detail?id=170</url>
+        </dependency>
+
+        <!--
+          compile-time dependencies of the jUnit test-cases 
+          in the core subproject	
+        -->
+        <dependency>
+            <id>concurrent</id>
+            <version>1.3.4</version>
+        </dependency>
+        <dependency>
+            <groupId>geronimo-spec</groupId>
+            <artifactId>geronimo-spec-jta</artifactId>
+            <version>1.0-M1</version>
+        </dependency>
+        <dependency>
+            <id>log4j</id>
+            <version>1.2.8</version>
+        </dependency>
+        
+        <!--
+          runtime dependencies of jackrabbit/jUnit test-cases 
+        -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>3.0.10</version>
+        </dependency>
+        <dependency>
+            <id>commons-collections</id>
+            <version>3.1</version>
+        </dependency>
+        <dependency>
+            <groupId>lucene</groupId>
+            <artifactId>lucene</artifactId>
+            <version>1.4.3</version>
+        </dependency>
+        <dependency>
+            <groupId>xerces</groupId>
+            <artifactId>xercesImpl</artifactId>
+            <version>2.6.2</version>
+        </dependency>
+        <dependency>
+            <groupId>xml-apis</groupId>
+            <artifactId>xmlParserAPIs</artifactId>
+            <version>2.0.2</version>
+        </dependency>
+    </dependencies>
+
+    <!-- ====================================================================== -->
+    <!-- B U I L D  D E S C R I P T I O N                                       -->
+    <!-- ====================================================================== -->
+    <build>
+        <sourceDirectory>src/java</sourceDirectory>
+        <unitTestSourceDirectory>../../core/src/test</unitTestSourceDirectory>
+        <unitTest>
+            <includes>
+                <include>**/*TestAll.java</include>
+            </includes>
+            <excludes>
+                <exclude>**/init/*</exclude>
+            </excludes>
+            <resources>
+                <resource>
+                    <directory>applications/test</directory>
+                    <includes>
+                        <include>*.properties</include>
+                        <include>*.xml</include>
+                    </includes>
+                </resource>
+                <resource>
+                    <directory>../../core/src/test</directory>
+                    <includes>
+                        <include>**/*.xml</include>
+                        <include>**/*.txt</include>
+                    </includes>
+                </resource>
+            </resources>
+        </unitTest>
+        
+        <!-- J A R  R E S O U R C E S -->
+        <!-- Resources that are packaged up inside the JAR file -->
+        <resources>
+            <resource>
+                <directory>src/java</directory>
+                <includes>
+                    <include>**/*.ddl</include>
+                </includes>
+            </resource>
+        </resources>
+    </build>
+
+    <!-- ====================================================================== -->
+    <!-- R E P O R T S                                                          -->
+    <!-- ====================================================================== -->
+    <reports>
+        <report>maven-changelog-plugin</report>
+        <report>maven-changes-plugin</report>
+        <report>maven-checkstyle-plugin</report>
+        <report>maven-javadoc-plugin</report>
+        <report>maven-junit-report-plugin</report>
+        <report>maven-jxr-plugin</report>
+        <report>maven-license-plugin</report>
+        <report>maven-tasklist-plugin</report>
+    </reports>
+
+</project>

Propchange: incubator/jackrabbit/trunk/contrib/db-persistence/project.xml
------------------------------------------------------------------------------
    svn:eol-style = native

Added: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/SimpleDbPersistenceManager.java
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/SimpleDbPersistenceManager.java?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/SimpleDbPersistenceManager.java
(added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/SimpleDbPersistenceManager.java
Fri Aug 12 08:18:07 2005
@@ -0,0 +1,919 @@
+/*
+ * Copyright 2004-2005 The Apache Software Foundation or its licensors,
+ *                     as applicable.
+ *
+ * Licensed 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.jackrabbit.core.state.db;
+
+import org.apache.jackrabbit.core.NodeId;
+import org.apache.jackrabbit.core.PropertyId;
+import org.apache.jackrabbit.core.fs.FileSystem;
+import org.apache.jackrabbit.core.fs.FileSystemPathUtil;
+import org.apache.jackrabbit.core.fs.FileSystemResource;
+import org.apache.jackrabbit.core.fs.local.LocalFileSystem;
+import org.apache.jackrabbit.core.state.AbstractPersistenceManager;
+import org.apache.jackrabbit.core.state.ChangeLog;
+import org.apache.jackrabbit.core.state.ItemState;
+import org.apache.jackrabbit.core.state.ItemStateException;
+import org.apache.jackrabbit.core.state.NoSuchItemStateException;
+import org.apache.jackrabbit.core.state.NodeReferences;
+import org.apache.jackrabbit.core.state.NodeReferencesId;
+import org.apache.jackrabbit.core.state.NodeState;
+import org.apache.jackrabbit.core.state.PMContext;
+import org.apache.jackrabbit.core.state.PropertyState;
+import org.apache.jackrabbit.core.state.obj.BLOBStore;
+import org.apache.jackrabbit.core.state.obj.ObjectPersistenceManager;
+import org.apache.jackrabbit.core.value.BLOBFileValue;
+import org.apache.jackrabbit.core.value.InternalValue;
+import org.apache.jackrabbit.name.QName;
+import org.apache.jackrabbit.util.Text;
+import org.apache.log4j.Logger;
+
+import javax.jcr.PropertyType;
+import javax.jcr.RepositoryException;
+import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.InputStreamReader;
+import java.io.BufferedReader;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+/**
+ * <code>SimpleDbPersistenceManager</code> is a generic JDBC-based
+ * <code>PersistenceManager</code> for Jackrabbit that persists
+ * <code>ItemState</code> and <code>NodeReferences</code> objects
using a
+ * simple custom serialization format and a very basic non-normalized database
+ * schema (in essence tables with one 'key' and one 'data' column).
+ * <p/>
+ * It is configured through the following properties:
+ * <ul>
+ * <li><code>driver</code>: the FQN name of the JDBC driver class</li>
+ * <li><code>url</code>: the database url of the form <code>jdbc:subprotocol:subname</code></li>
+ * <li><code>user</code>: the database user</li>
+ * <li><code>password</code>: the user's password</li>
+ * <li><code>schema</code>: type of schema to be used
+ * (e.g. <code>mysql</code>, <code>mssql</code>, etc.); </li>
+ * <li><code>schemaObjectPrefix</code>: prefix to be prepended to schema
objects</li>
+ * </ul>
+ * The required schema objects are automatically created by executing the DDL
+ * statements read from the [schema].ddl file. The .ddl file is read from the
+ * resources by calling <code>getClass().getResourceAsStream(schema + ".ddl")</code>.
+ * Every line in the specified .ddl file is executed separatly by calling
+ * <code>java.sql.Statement.execute(String)</code> where every occurence of the
+ * the string <code>"${schemaObjectPrefix}"</code> has been replaced with the
+ * value of the property <code>schemaObjectPrefix</code>.
+ * <p/>
+ * The following is a fragment from a sample configuration:
+ * <pre>
+ *   &lt;PersistenceManager class="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager"&gt;
+ *       &lt;param name="driver" value="com.mysql.jdbc.Driver"/&gt;
+ *       &lt;param name="url" value="jdbc:mysql:///test"/&gt;
+ *       &lt;param name="schema" value="mysql"/&gt;
+ *       &lt;param name="schemaObjectPrefix" value="${wsp.name}_"/&gt;
+ *  &lt;/PersistenceManager&gt;
+ * </pre>
+ */
+public class SimpleDbPersistenceManager extends AbstractPersistenceManager
+        implements BLOBStore {
+
+    /** Logger instance */
+    private static Logger log = Logger.getLogger(SimpleDbPersistenceManager.class);
+
+    protected static final String SCHEMA_OBJECT_PREFIX_VARIABLE =
+            "${schemaObjectPrefix}";
+
+    protected boolean initialized;
+
+    protected String driver;
+    protected String url;
+    protected String user;
+    protected String password;
+    protected String schema;
+    protected String schemaObjectPrefix;
+
+    // initial size of buffer used to serialize objects
+    protected static final int INITIAL_BUFFER_SIZE = 1024;
+
+    // jdbc connection
+    protected Connection con;
+
+    // shared prepared statements for NodeState management
+    protected PreparedStatement nodeStateInsert;
+    protected PreparedStatement nodeStateUpdate;
+    protected PreparedStatement nodeStateSelect;
+    protected PreparedStatement nodeStateDelete;
+
+    // shared prepared statements for PropertyState management
+    protected PreparedStatement propertyStateInsert;
+    protected PreparedStatement propertyStateUpdate;
+    protected PreparedStatement propertyStateSelect;
+    protected PreparedStatement propertyStateDelete;
+
+    // shared prepared statements for NodeReference management
+    protected PreparedStatement nodeReferenceInsert;
+    protected PreparedStatement nodeReferenceUpdate;
+    protected PreparedStatement nodeReferenceSelect;
+    protected PreparedStatement nodeReferenceDelete;
+
+    /** file system where BLOB data is stored */
+    protected FileSystem blobFS;
+
+    /**
+     * Creates a new <code>SimpleDbPersistenceManager</code> instance.
+     */
+    public SimpleDbPersistenceManager() {
+        schema = "default";
+        schemaObjectPrefix = "";
+        initialized = false;
+    }
+
+    //----------------------------------------------------< setters & getters >
+    public String getUrl() {
+        return url;
+    }
+
+    public void setUrl(String url) {
+        this.url = url;
+    }
+
+    public String getUser() {
+        return user;
+    }
+
+    public void setUser(String user) {
+        this.user = user;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getDriver() {
+        return driver;
+    }
+
+    public void setDriver(String driver) {
+        this.driver = driver;
+    }
+
+    public String getSchemaObjectPrefix() {
+        return schemaObjectPrefix;
+    }
+
+    public void setSchemaObjectPrefix(String schemaObjectPrefix) {
+        // make sure prefix is all uppercase
+        this.schemaObjectPrefix = schemaObjectPrefix.toUpperCase();
+    }
+
+    public String getSchema() {
+        return schema;
+    }
+
+    public void setSchema(String schema) {
+        this.schema = schema;
+    }
+
+    //------------------------------------------------------------< BLOBStore >
+    /**
+     * {@inheritDoc}
+     */
+    public FileSystemResource get(String blobId) throws Exception {
+        return new FileSystemResource(blobFS, blobId);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public String put(PropertyId id, int index, InputStream in, long size)
+            throws Exception {
+        String path = buildBlobFilePath(id.getParentUUID(), id.getName(), index);
+        OutputStream out = null;
+        FileSystemResource internalBlobFile = new FileSystemResource(blobFS, path);
+        internalBlobFile.makeParentDirs();
+        try {
+            out = new BufferedOutputStream(internalBlobFile.getOutputStream());
+            byte[] buffer = new byte[8192];
+            int read;
+            while ((read = in.read(buffer)) > 0) {
+                out.write(buffer, 0, read);
+            }
+        } finally {
+            out.close();
+        }
+        return path;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean remove(String blobId) throws Exception {
+        FileSystemResource res = new FileSystemResource(blobFS, blobId);
+        if (!res.exists()) {
+            return false;
+        }
+        // delete resource and prune empty parent folders
+        res.delete(true);
+        return true;
+    }
+
+    //---------------------------------------------------< PersistenceManager >
+    /**
+     * {@inheritDoc}
+     */
+    public void init(PMContext context) throws Exception {
+        if (initialized) {
+            throw new IllegalStateException("already initialized");
+        }
+
+        // setup jdbc connection
+        Class.forName(driver);
+        con = DriverManager.getConnection(url, user, password);
+        con.setAutoCommit(false);
+
+        // check if schema objects exist and create them if necessary
+        checkSchema();
+
+        /**
+         * store blob's in local file system in a sub directory
+         * of the workspace home directory
+         */
+        LocalFileSystem blobFS = new LocalFileSystem();
+        blobFS.setRoot(new File(context.getHomeDir(), "blobs"));
+        blobFS.init();
+        this.blobFS = blobFS;
+
+        // prepare statements
+        nodeStateInsert =
+                con.prepareStatement("insert into "
+                + schemaObjectPrefix + "NODE (NODE_DATA, NODE_ID) values (?, ?)");
+        nodeStateUpdate =
+                con.prepareStatement("update "
+                + schemaObjectPrefix + "NODE set NODE_DATA = ? where NODE_ID = ?");
+        nodeStateSelect =
+                con.prepareStatement("select NODE_DATA from "
+                + schemaObjectPrefix + "NODE where NODE_ID = ?");
+        nodeStateDelete =
+                con.prepareStatement("delete from "
+                + schemaObjectPrefix + "NODE where NODE_ID = ?");
+
+        propertyStateInsert =
+                con.prepareStatement("insert into "
+                + schemaObjectPrefix + "PROP (PROP_DATA, PROP_ID) values (?, ?)");
+        propertyStateUpdate =
+                con.prepareStatement("update "
+                + schemaObjectPrefix + "PROP set PROP_DATA = ? where PROP_ID = ?");
+        propertyStateSelect =
+                con.prepareStatement("select PROP_DATA from "
+                + schemaObjectPrefix + "PROP where PROP_ID = ?");
+        propertyStateDelete =
+                con.prepareStatement("delete from "
+                + schemaObjectPrefix + "PROP where PROP_ID = ?");
+
+        nodeReferenceInsert =
+                con.prepareStatement("insert into "
+                + schemaObjectPrefix + "REFS (REFS_DATA, NODE_ID) values (?, ?)");
+        nodeReferenceUpdate =
+                con.prepareStatement("update "
+                + schemaObjectPrefix + "REFS set REFS_DATA = ? where NODE_ID = ?");
+        nodeReferenceSelect =
+                con.prepareStatement("select REFS_DATA from "
+                + schemaObjectPrefix + "REFS where NODE_ID = ?");
+        nodeReferenceDelete =
+                con.prepareStatement("delete from "
+                + schemaObjectPrefix + "REFS where NODE_ID = ?");
+
+        initialized = true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized void close() throws Exception {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        try {
+            // close shared prepared statements
+            closeStatement(nodeStateInsert);
+            closeStatement(nodeStateUpdate);
+            closeStatement(nodeStateSelect);
+            closeStatement(nodeStateDelete);
+
+            closeStatement(propertyStateInsert);
+            closeStatement(propertyStateUpdate);
+            closeStatement(propertyStateSelect);
+            closeStatement(propertyStateDelete);
+
+            closeStatement(nodeReferenceInsert);
+            closeStatement(nodeReferenceUpdate);
+            closeStatement(nodeReferenceSelect);
+            closeStatement(nodeReferenceDelete);
+
+            // close jdbc connection
+            con.close();
+            // close blob store
+            blobFS.close();
+            blobFS = null;
+        } finally {
+            initialized = false;
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized void store(ChangeLog changeLog)
+            throws ItemStateException {
+        ItemStateException ise = null;
+        try {
+            super.store(changeLog);
+        } catch (ItemStateException e) {
+            ise = e;
+        } finally {
+            if (ise == null) {
+                // storing the changes succeeded, now commit the changes
+                try {
+                    con.commit();
+                } catch (SQLException e) {
+                    String msg = "committing change log failed";
+                    log.error(msg, e);
+                    throw new ItemStateException(msg, e);
+                }
+            } else {
+                // storing the changes failed, rollback changes
+                try {
+                    con.rollback();
+                } catch (SQLException e) {
+                    String msg = "rollback of change log failed";
+                    log.error(msg, e);
+                    // re-throw original exception
+                    throw ise;
+                }
+            }
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized NodeState load(NodeId id)
+            throws NoSuchItemStateException, ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeStateSelect;
+        ResultSet rs = null;
+        InputStream in = null;
+        try {
+            stmt.setString(1, id.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+            if (!rs.next()) {
+                throw new NoSuchItemStateException(id.toString());
+            }
+
+            in = rs.getBinaryStream(1);
+            NodeState state = createNew(id);
+            ObjectPersistenceManager.deserialize(state, in);
+
+            return state;
+        } catch (Exception e) {
+            if (e instanceof NoSuchItemStateException) {
+                throw (NoSuchItemStateException) e;
+            }
+            String msg = "failed to read node state: " + id;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeStream(in);
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized PropertyState load(PropertyId id)
+            throws NoSuchItemStateException, ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = propertyStateSelect;
+        ResultSet rs = null;
+        InputStream in = null;
+        try {
+            stmt.setString(1, id.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+            if (!rs.next()) {
+                throw new NoSuchItemStateException(id.toString());
+            }
+
+            in = rs.getBinaryStream(1);
+            PropertyState state = createNew(id);
+            ObjectPersistenceManager.deserialize(state, in, this);
+
+            return state;
+        } catch (Exception e) {
+            if (e instanceof NoSuchItemStateException) {
+                throw (NoSuchItemStateException) e;
+            }
+            String msg = "failed to read property state: " + id;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeStream(in);
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     * <p/>
+     * This method uses shared <code>PreparedStatement</code>s which must
+     * be executed strictly sequentially. Because this method synchronizes on
+     * the persistence manager instance there is no need to synchronize on the
+     * shared statement. If the method would not be sychronized the shared
+     * statements would have to be synchronized.
+     */
+    public synchronized void store(NodeState state) throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        // check if insert or update
+        //boolean update = exists((NodeId) state.getId());
+        boolean update = state.getStatus() != ItemState.STATUS_NEW;
+        PreparedStatement stmt = (update) ? nodeStateUpdate : nodeStateInsert;
+
+        try {
+            ByteArrayOutputStream out =
+                    new ByteArrayOutputStream(INITIAL_BUFFER_SIZE);
+            // serialize node state
+            ObjectPersistenceManager.serialize(state, out);
+
+            // we are synchronized on this instance, therefore we do not
+            // not have to additionally synchronize on the preparedStatement
+
+            stmt.setBytes(1, out.toByteArray());
+            stmt.setString(2, state.getId().toString());
+            stmt.execute();
+
+            // there's no need to close a ByteArrayOutputStream
+            //out.close();
+        } catch (Exception e) {
+            String msg = "failed to write node state: " + state.getId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     * <p/>
+     * This method uses shared <code>PreparedStatement</code>s which must
+     * be executed strictly sequentially. Because this method synchronizes on
+     * the persistence manager instance there is no need to synchronize on the
+     * shared statement. If the method would not be sychronized the shared
+     * statements would have to be synchronized.
+     */
+    public synchronized void store(PropertyState state)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        // check if insert or update
+        //boolean update = exists((PropertyId) state.getId());
+        boolean update = state.getStatus() != ItemState.STATUS_NEW;
+        PreparedStatement stmt = (update) ? propertyStateUpdate : propertyStateInsert;
+
+        try {
+            ByteArrayOutputStream out =
+                    new ByteArrayOutputStream(INITIAL_BUFFER_SIZE);
+            // serialize property state
+            ObjectPersistenceManager.serialize(state, out, this);
+
+            // we are synchronized on this instance, therefore we do not
+            // not have to additionally synchronize on the preparedStatement
+
+            stmt.setBytes(1, out.toByteArray());
+            stmt.setString(2, state.getId().toString());
+            stmt.execute();
+
+            // there's no need to close a ByteArrayOutputStream
+            //out.close();
+        } catch (Exception e) {
+            String msg = "failed to write property state: " + state.getId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized void destroy(NodeState state)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeStateDelete;
+        try {
+            stmt.setString(1, state.getId().toString());
+            stmt.execute();
+        } catch (Exception e) {
+            String msg = "failed to delete node state: " + state.getId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized void destroy(PropertyState state)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        // delete binary values (stored as files)
+        InternalValue[] values = state.getValues();
+        if (values != null) {
+            for (int i = 0; i < values.length; i++) {
+                InternalValue val = values[i];
+                if (val != null) {
+                    if (val.getType() == PropertyType.BINARY) {
+                        BLOBFileValue blobVal = (BLOBFileValue) val.internalValue();
+                        // delete blob file and prune empty parent folders
+                        blobVal.delete(true);
+                    }
+                }
+            }
+        }
+
+        PreparedStatement stmt = propertyStateDelete;
+        try {
+            stmt.setString(1, state.getId().toString());
+            stmt.execute();
+        } catch (Exception e) {
+            String msg = "failed to delete property state: " + state.getId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized NodeReferences load(NodeReferencesId targetId)
+            throws NoSuchItemStateException, ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeReferenceSelect;
+        ResultSet rs = null;
+        InputStream in = null;
+        try {
+            stmt.setString(1, targetId.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+            if (!rs.next()) {
+                throw new NoSuchItemStateException(targetId.toString());
+            }
+
+            in = rs.getBinaryStream(1);
+            NodeReferences refs = new NodeReferences(targetId);
+            ObjectPersistenceManager.deserialize(refs, in);
+
+            return refs;
+        } catch (Exception e) {
+            if (e instanceof NoSuchItemStateException) {
+                throw (NoSuchItemStateException) e;
+            }
+            String msg = "failed to read references: " + targetId;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeStream(in);
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     * <p/>
+     * This method uses shared <code>PreparedStatement</code>s which must
+     * be executed strictly sequentially. Because this method synchronizes on
+     * the persistence manager instance there is no need to synchronize on the
+     * shared statement. If the method would not be sychronized the shared
+     * statements would have to be synchronized.
+     */
+    public synchronized void store(NodeReferences refs)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        // check if insert or update
+        boolean update = exists(refs.getTargetId());
+        PreparedStatement stmt = (update) ? nodeReferenceUpdate : nodeReferenceInsert;
+
+        try {
+            ByteArrayOutputStream out =
+                    new ByteArrayOutputStream(INITIAL_BUFFER_SIZE);
+            // serialize references
+            ObjectPersistenceManager.serialize(refs, out);
+
+            // we are synchronized on this instance, therefore we do not
+            // not have to additionally synchronize on the preparedStatement
+
+            stmt.setBytes(1, out.toByteArray());
+            stmt.setString(2, refs.getTargetId().toString());
+            stmt.execute();
+
+            // there's no need to close a ByteArrayOutputStream
+            //out.close();
+        } catch (Exception e) {
+            String msg = "failed to write property state: " + refs.getTargetId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized void destroy(NodeReferences refs)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeReferenceDelete;
+        try {
+            stmt.setString(1, refs.getTargetId().toString());
+            stmt.execute();
+        } catch (Exception e) {
+            String msg = "failed to delete references: " + refs.getTargetId();
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean exists(NodeId id) throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeStateSelect;
+        ResultSet rs = null;
+        try {
+            stmt.setString(1, id.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+
+            // a node state exists if the result has at least one entry
+            return rs.next();
+        } catch (Exception e) {
+            String msg = "failed to check existence of node state: " + id;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean exists(PropertyId id) throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = propertyStateSelect;
+        ResultSet rs = null;
+        try {
+            stmt.setString(1, id.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+
+            // a property state exists if the result has at least one entry
+            return rs.next();
+        } catch (Exception e) {
+            String msg = "failed to check existence of property state: " + id;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public synchronized boolean exists(NodeReferencesId targetId)
+            throws ItemStateException {
+        if (!initialized) {
+            throw new IllegalStateException("not initialized");
+        }
+
+        PreparedStatement stmt = nodeReferenceSelect;
+        ResultSet rs = null;
+        try {
+            stmt.setString(1, targetId.toString());
+            stmt.execute();
+            rs = stmt.getResultSet();
+
+            // a reference exists if the result has at least one entry
+            return rs.next();
+        } catch (Exception e) {
+            String msg = "failed to check existence of node references: "
+                    + targetId;
+            log.error(msg, e);
+            throw new ItemStateException(msg, e);
+        } finally {
+            closeResultSet(rs);
+            resetStatement(stmt);
+        }
+    }
+
+    //-------------------------------------------------< misc. helper methods >
+    /**
+     * Resets the given <code>PreparedStatement</code> by clearing the parameters
+     * and warnings contained.
+     * <p/>
+     * NOTE: This method MUST be called in a synchronized context as neither
+     * this method nor the <code>PreparedStatement</code> instance on which it
+     * operates are thread safe.
+     *
+     * @param stmt The <code>PreparedStatement</code> to reset. If
+     *             <code>null</code> this method does nothing.
+     */
+    protected void resetStatement(PreparedStatement stmt) {
+        if (stmt != null) {
+            try {
+                stmt.clearParameters();
+                stmt.clearWarnings();
+            } catch (SQLException se) {
+                logException("failed resetting PreparedStatement", se);
+            }
+        }
+    }
+
+    protected void closeResultSet(ResultSet rs) {
+        if (rs != null) {
+            try {
+                rs.close();
+            } catch (SQLException se) {
+                logException("failed closing ResultSet", se);
+            }
+        }
+    }
+
+    protected void closeStream(InputStream in) {
+        if (in != null) {
+            try {
+                in.close();
+            } catch (IOException ignore) {
+            }
+        }
+    }
+
+    protected void closeStatement(Statement stmt) {
+        if (stmt != null) {
+            try {
+                stmt.close();
+            } catch (SQLException se) {
+                logException("failed closing Statement", se);
+            }
+        }
+    }
+
+    protected void logException(String message, SQLException se) {
+        if (message != null) {
+            log.error(message);
+        }
+        log.error("    reason: " + se.getMessage());
+        log.error("state/code: " + se.getSQLState() + "/" + se.getErrorCode());
+        log.debug("      dump:", se);
+    }
+
+    protected static String buildBlobFilePath(String parentUUID,
+                                              QName propName, int index) {
+        StringBuffer sb = new StringBuffer();
+        char[] chars = parentUUID.toCharArray();
+        int cnt = 0;
+        for (int i = 0; i < chars.length; i++) {
+            if (chars[i] == '-') {
+                continue;
+            }
+            //if (cnt > 0 && cnt % 4 == 0) {
+            if (cnt == 2 || cnt == 4) {
+                sb.append(FileSystem.SEPARATOR_CHAR);
+            }
+            sb.append(chars[i]);
+            cnt++;
+        }
+        sb.append(FileSystem.SEPARATOR_CHAR);
+        sb.append(FileSystemPathUtil.escapeName(propName.toString()));
+        sb.append('.');
+        sb.append(index);
+        sb.append(".bin");
+        return sb.toString();
+    }
+
+    /**
+     * Checks if the required schema objects exist and creates them if they
+     * don't exist yet.
+     * @throws Exception if an error occurs
+     */
+    protected void checkSchema() throws Exception {
+        ResultSet rs = con.getMetaData().getTables(null, null,
+                schemaObjectPrefix + "NODE", null);
+        boolean schemaExists;
+        try {
+            schemaExists = rs.next();
+        } finally {
+            rs.close();
+        }
+
+        if (!schemaExists) {
+            // read ddl from resources
+            InputStream in = getClass().getResourceAsStream(schema + ".ddl");
+            if (in == null) {
+                String msg = "Configuration error: unknown schema '" + schema + "'";
+                log.debug(msg);
+                throw new RepositoryException(msg);
+            }
+            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+            Statement stmt = con.createStatement();
+            try {
+                String sql = reader.readLine();
+                while (sql != null) {
+                    // replace prefix variable
+                    sql = Text.replace(sql, SCHEMA_OBJECT_PREFIX_VARIABLE, schemaObjectPrefix);
+                    // execute sql stmt
+                    stmt.execute(sql);
+                    // read next sql stmt
+                    sql = reader.readLine();
+                }
+                // commit the changes
+                con.commit();
+            } finally {
+                closeStream(in);
+                closeStatement(stmt);
+            }
+        }
+    }
+}

Propchange: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/SimpleDbPersistenceManager.java
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Added: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/default.ddl
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/default.ddl?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/default.ddl
(added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/default.ddl
Fri Aug 12 08:18:07 2005
@@ -0,0 +1,6 @@
+create table ${schemaObjectPrefix}NODE (NODE_ID char(36) not null, NODE_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}NODE_IDX on ${schemaObjectPrefix}NODE (NODE_ID)
+create table ${schemaObjectPrefix}PROP (PROP_ID varchar not null, PROP_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}PROP_IDX on ${schemaObjectPrefix}PROP (PROP_ID)
+create table ${schemaObjectPrefix}REFS (NODE_ID char(36) not null, REFS_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}REFS_IDX on ${schemaObjectPrefix}REFS (NODE_ID)

Added: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mssql.ddl
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mssql.ddl?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mssql.ddl
(added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mssql.ddl
Fri Aug 12 08:18:07 2005
@@ -0,0 +1,6 @@
+create table ${schemaObjectPrefix}NODE (NODE_ID char(36) not null, NODE_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}NODE_IDX on ${schemaObjectPrefix}NODE (NODE_ID)
+create table ${schemaObjectPrefix}PROP (PROP_ID varchar not null, PROP_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}PROP_IDX on ${schemaObjectPrefix}PROP (PROP_ID)
+create table ${schemaObjectPrefix}REFS (NODE_ID char(36) not null, REFS_DATA varbinary not
null)
+create unique index ${schemaObjectPrefix}REFS_IDX on ${schemaObjectPrefix}REFS (NODE_ID)

Added: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mysql.ddl
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mysql.ddl?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mysql.ddl
(added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/mysql.ddl
Fri Aug 12 08:18:07 2005
@@ -0,0 +1,6 @@
+create table ${schemaObjectPrefix}NODE (NODE_ID char(36) not null, NODE_DATA blob not null)
+create unique index ${schemaObjectPrefix}NODE_IDX on ${schemaObjectPrefix}NODE (NODE_ID)
+create table ${schemaObjectPrefix}PROP (PROP_ID varchar(255) not null, PROP_DATA blob not
null)
+create unique index ${schemaObjectPrefix}PROP_IDX on ${schemaObjectPrefix}PROP (PROP_ID)
+create table ${schemaObjectPrefix}REFS (NODE_ID char(36) not null, REFS_DATA blob not null)
+create unique index ${schemaObjectPrefix}REFS_IDX on ${schemaObjectPrefix}REFS (NODE_ID)

Added: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/package.html
URL: http://svn.apache.org/viewcvs/incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/package.html?rev=232308&view=auto
==============================================================================
--- incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/package.html
(added)
+++ incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/package.html
Fri Aug 12 08:18:07 2005
@@ -0,0 +1,16 @@
+<body>
+This package contains the class <code>{@link SimpleDbPersistenceManager}</code>,
+a simple generic JDBC-based <code>PersistenceManager</code> for Jackrabbit.
+<p/>
+It also contains [schemaName].ddl files which are read by
+<code>{@link SimpleDbPersistenceManager}</code>  in order to automatically
+create the required schema objects on the target database. Every line in a
+[schemaName].ddl file is executed separatly by calling
+<code>java.sql.Statement.execute(String)</code> where every occurence of the
+the string <code>"${schemaObjectPrefix}"</code> has been replaced with the
+value of the property <code>schemaObjectPrefix</code> (see
+ <code>{@link SimpleDbPersistenceManager#setSchemaObjectPrefix(String)}</code>).
+The schema name is either set programmtically by calling
+<code>{@link SimpleDbPersistenceManager#setSchema(String)}</code> or configured
+through the <code>schema</code> bean property.
+</body>

Propchange: incubator/jackrabbit/trunk/contrib/db-persistence/src/java/org/apache/jackrabbit/core/state/db/package.html
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