Small refactor for comming converters

vasc-backend/vasc-backend-jdbc/.classpath

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java"/>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources"/>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java"/>
+	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

vasc-backend/vasc-backend-jdbc/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>vasc-backend-jdbc</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

vasc-backend/vasc-backend-jdbc/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,7 @@
+#Sat Dec 31 04:21:23 CET 2011
+eclipse.preferences.version=1
+encoding//src/main/java=UTF-8
+encoding//src/main/resources=UTF-8
+encoding//src/test/java=UTF-8
+encoding//src/test/resources=UTF-8
+encoding/<project>=UTF-8

vasc-backend/vasc-backend-jdbc/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,6 @@
+#Sat Dec 31 04:21:23 CET 2011
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.source=1.5

vasc-backend/vasc-backend-jdbc/.settings/org.eclipse.m2e.core.prefs

@@ -0,0 +1,5 @@
+#Sat Dec 31 04:21:23 CET 2011
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

vasc-backend/vasc-backend-jdbc/pom.xml

@@ -0,0 +1,19 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>vasc-backend</artifactId>
+    <groupId>net.forwardfire.vasc</groupId>
+    <version>0.3.5-SNAPSHOT</version>
+    <relativePath>..</relativePath>
+  </parent>
+  <artifactId>vasc-backend-jdbc</artifactId>
+  <name>vasc-backend-jdbc</name>
+  <description>vasc-backend-jdbc</description>
+  <dependencies>
+  	<dependency>
+		<groupId>net.forwardfire.vasc</groupId>
+		<artifactId>vasc-core</artifactId>
+		<version>${project.version}</version>
+    </dependency>
+  </dependencies>
+</project>

vasc-backend/vasc-backend-jdbc/src/main/java/net/forwardfire/vasc/backend/jdbc/JdbcConnectionProvider.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2007-2012 forwardfire.net All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted provided
+ * that the following conditions are met:
+ * 
+ * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+ *   following disclaimer.
+ * * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ */
+
+package net.forwardfire.vasc.backend.jdbc;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+
+/**
+ * 
+ * @author Willem Cazander
+ * @version 1.0 Sep 5, 2008
+ */
+public interface JdbcConnectionProvider {
+	
+	public Connection getJdbcConnection() throws SQLException;
+}

vasc-backend/vasc-backend-jdbc/src/main/java/net/forwardfire/vasc/backend/jdbc/JdbcConnectionProviderImpl.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-2012 forwardfire.net All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted provided
+ * that the following conditions are met:
+ * 
+ * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+ *   following disclaimer.
+ * * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ */
+
+package net.forwardfire.vasc.backend.jdbc;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+
+/**
+ * 
+ * @author Willem Cazander
+ * @version 1.0 Mar 15, 2009
+ */
+public class JdbcConnectionProviderImpl implements JdbcConnectionProvider {
+
+	private String driverClassName = null;
+	private String dbUrl = null;
+	private String dbUser = null;
+	private String dbPassword = null;
+	private boolean loadedDriver = false;
+	
+	/**
+	 * @see net.forwardfire.vasc.backend.jdbc.JdbcConnectionProvider#getJdbcConnection()
+	 */
+	public Connection getJdbcConnection() throws SQLException {
+		if (loadedDriver==false) { 
+			try {
+				Class.forName(driverClassName);
+				loadedDriver = true;
+			} catch (ClassNotFoundException e) {
+				throw new SQLException("Could not load driver: "+driverClassName+" error: "+e.getMessage(),e);
+			}
+		}
+		Connection connection = DriverManager.getConnection(dbUrl, dbUser, dbPassword);
+		return connection;
+	}
+
+	/**
+	 * @return the driverClassName
+	 */
+	public String getDriverClassName() {
+		return driverClassName;
+	}
+
+	/**
+	 * @param driverClassName the driverClassName to set
+	 */
+	public void setDriverClassName(String driverClassName) {
+		this.driverClassName = driverClassName;
+	}
+
+	/**
+	 * @return the dbUrl
+	 */
+	public String getDbUrl() {
+		return dbUrl;
+	}
+
+	/**
+	 * @param dbUrl the dbUrl to set
+	 */
+	public void setDbUrl(String dbUrl) {
+		this.dbUrl = dbUrl;
+	}
+
+	/**
+	 * @return the dbUser
+	 */
+	public String getDbUser() {
+		return dbUser;
+	}
+
+	/**
+	 * @param dbUser the dbUser to set
+	 */
+	public void setDbUser(String dbUser) {
+		this.dbUser = dbUser;
+	}
+
+	/**
+	 * @return the dbPassword
+	 */
+	public String getDbPassword() {
+		return dbPassword;
+	}
+
+	/**
+	 * @param dbPassword the dbPassword to set
+	 */
+	public void setDbPassword(String dbPassword) {
+		this.dbPassword = dbPassword;
+	}
+	
+	
+	
+}

vasc-backend/vasc-backend-jdbc/src/main/java/net/forwardfire/vasc/backend/jdbc/JdbcConnectionProviderJdniImpl.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright 2007-2012 forwardfire.net All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted provided
+ * that the following conditions are met:
+ * 
+ * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+ *   following disclaimer.
+ * * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ */
+
+package net.forwardfire.vasc.backend.jdbc;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+import javax.sql.DataSource;
+
+/**
+ * 
+ * @author Willem Cazander
+ * @version 1.0 Mar 15, 2009
+ */
+public class JdbcConnectionProviderJdniImpl implements JdbcConnectionProvider {
+
+	/** The context in which database data sources are found. */
+	private String dataSourceContext = "java:/";
+	
+	private String dataSourceName = null;
+	
+	/**
+	 * @see net.forwardfire.vasc.backend.jdbc.JdbcConnectionProvider#getJdbcConnection()
+	 */
+	public Connection getJdbcConnection() throws SQLException {
+		Connection connection = getDataSource(dataSourceName).getConnection();
+		return connection;
+	}
+	
+
+	/**
+	 * Gets a DataSource out of the JNDI context.
+	 * <p>
+	 * @param name	The name of the data source in the JDNI context.
+	 * @return	The data source.
+	 */
+	private DataSource getDataSource(String name) throws SQLException {
+
+		try {
+			Context initialContext = new InitialContext();
+			if ( initialContext == null ) {
+				throw new SQLException("Cannot get Initial Context");
+			}
+			DataSource datasource = (DataSource)initialContext.lookup(dataSourceContext+name);
+			if ( datasource == null ) {
+				throw new SQLException("Cannot lookup datasource: "+name);
+			}
+			return datasource;
+		} catch ( NamingException e ) {
+			throw new SQLException("Cannot get connection " + e,e);
+		}
+	}
+
+
+	/**
+	 * @return the dataSourceContext
+	 */
+	public String getDataSourceContext() {
+		return dataSourceContext;
+	}
+
+
+	/**
+	 * @param dataSourceContext the dataSourceContext to set
+	 */
+	public void setDataSourceContext(String dataSourceContext) {
+		this.dataSourceContext = dataSourceContext;
+	}
+
+
+	/**
+	 * @return the dataSourceName
+	 */
+	public String getDataSourceName() {
+		return dataSourceName;
+	}
+
+
+	/**
+	 * @param dataSourceName the dataSourceName to set
+	 */
+	public void setDataSourceName(String dataSourceName) {
+		this.dataSourceName = dataSourceName;
+	}
+}

vasc-backend/vasc-backend-jdbc/src/main/java/net/forwardfire/vasc/backend/jdbc/JdbcVascBackend.java

@@ -0,0 +1,157 @@
+/*
+ * Copyright 2007-2012 forwardfire.net All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted provided
+ * that the following conditions are met:
+ * 
+ * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+ *   following disclaimer.
+ * * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ */
+
+package net.forwardfire.vasc.backend.jdbc;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import net.forwardfire.vasc.backend.AbstractVascBackend;
+import net.forwardfire.vasc.backend.VascBackendState;
+import net.forwardfire.vasc.backend.data.MapVascEntryFieldValue;
+import net.forwardfire.vasc.backend.data.MapVascEntryRecordCreator;
+import net.forwardfire.vasc.core.VascEntry;
+import net.forwardfire.vasc.core.VascEntryField;
+import net.forwardfire.vasc.core.VascException;
+import net.forwardfire.vasc.core.entry.VascEntryFieldValue;
+import net.forwardfire.vasc.core.entry.VascEntryRecordCreator;
+
+
+
+/**
+ * 
+ * @author Willem Cazander
+ * @version 1.0 Sep 5, 2008
+ */
+public class JdbcVascBackend extends AbstractVascBackend  {
+
+	private JdbcConnectionProvider jdbcConnectionProvider = null;
+	private String sqlList = null;
+	private String idColumn = null;
+	private String sqlDelete = null;
+	private String sqlUpdate = null;
+	private String sqlInsert = null;
+	
+	/**
+	 * @return the JdbcConnectionProvider
+	 */
+	public JdbcConnectionProvider getJdbcConnectionProvider() {
+		return jdbcConnectionProvider;
+	}
+
+	/**
+	 * @param JdbcConnectionProvider the JdbcConnectionProvider to set
+	 */
+	public void setJdbcConnectionProvider(JdbcConnectionProvider jdbcConnectionProvider) {
+		this.jdbcConnectionProvider = jdbcConnectionProvider;
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#execute(VascBackendState state)
+	 */
+	public List<Object> execute(VascBackendState state) throws VascException {
+		JdbcConnectionProvider prov = getJdbcConnectionProvider();
+		List<Object> result = new ArrayList<Object>(50);
+		Connection connection = null;
+		try {
+			connection = prov.getJdbcConnection();
+			Statement s = connection.createStatement();
+			s.execute(getSqlList());
+			ResultSet rs = s.getResultSet();
+			int cols = rs.getMetaData().getColumnCount();
+			while (rs.next()) {
+				Map<String,Object> map = new HashMap<String,Object>(cols);
+				for (int i=1;i<=cols;i++) {
+					String columnName = rs.getMetaData().getColumnName(i);
+					Object columnObject = rs.getObject(i);
+					map.put(columnName, columnObject);
+				}
+				result.add(map);
+			}
+		} catch (Exception e) {
+			throw new VascException(e);
+		} finally {
+			if (connection!=null) {
+				try {
+					connection.close();
+				} catch (Exception e) {
+				}
+			}
+		}
+		return result;
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#merge(java.lang.Object)
+	 */
+	public Object merge(Object object) throws VascException {
+		return object;
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#persist(java.lang.Object)
+	 */
+	public void persist(Object object) throws VascException {	
+	}
+	
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#delete(java.lang.Object)
+	 */
+	public void delete(Object object) throws VascException {
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#provideVascEntryFieldValue(net.forwardfire.vasc.core.VascEntryField)
+	 */
+	public VascEntryFieldValue provideVascEntryFieldValue(VascEntryField field) {
+		return new MapVascEntryFieldValue();
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#provideVascEntryRecordCreator(net.forwardfire.vasc.core.VascEntry)
+	 */
+	public VascEntryRecordCreator provideVascEntryRecordCreator(VascEntry vascEntry) {
+		return new MapVascEntryRecordCreator();
+	}
+
+	/**
+	 * @return the sqlList
+	 */
+	public String getSqlList() {
+		return sqlList;
+	}
+
+	/**
+	 * @param sqlList the sqlList to set
+	 */
+	public void setSqlList(String sqlList) {
+		this.sqlList = sqlList;
+	}
+	
+	
+	
+}

vasc-backend/vasc-backend-jdbc/src/main/java/net/forwardfire/vasc/backend/jdbc/JdbcVascBackendXpql.java

@@ -0,0 +1,163 @@
+/*
+ * Copyright 2007-2012 forwardfire.net All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted provided
+ * that the following conditions are met:
+ * 
+ * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+ *   following disclaimer.
+ * * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ */
+
+package net.forwardfire.vasc.backend.jdbc;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import net.forwardfire.vasc.backend.AbstractVascBackend;
+import net.forwardfire.vasc.backend.VascBackendState;
+import net.forwardfire.vasc.backend.data.MapVascEntryFieldValue;
+import net.forwardfire.vasc.backend.data.MapVascEntryRecordCreator;
+import net.forwardfire.vasc.core.VascEntry;
+import net.forwardfire.vasc.core.VascEntryField;
+import net.forwardfire.vasc.core.VascException;
+import net.forwardfire.vasc.core.entry.VascEntryFieldValue;
+import net.forwardfire.vasc.core.entry.VascEntryRecordCreator;
+import net.forwardfire.vasc.xpql.query.QueryParameterValue;
+
+
+
+/**
+ * 
+ * @author Willem Cazander
+ * @version 1.0 Sep 5, 2008
+ */
+public class JdbcVascBackendXpql extends AbstractVascBackend  {
+
+	private JdbcConnectionProvider jdbcConnectionProvider = null;
+	
+	private net.forwardfire.vasc.xpql.query.Query query = null;
+	
+	/**
+	 * @return the JdbcConnectionProvider
+	 */
+	public JdbcConnectionProvider getJdbcConnectionProvider() {
+		return jdbcConnectionProvider;
+	}
+
+	/**
+	 * @param JdbcConnectionProvider the JdbcConnectionProvider to set
+	 */
+	public void setJdbcConnectionProvider(JdbcConnectionProvider jdbcConnectionProvider) {
+		this.jdbcConnectionProvider = jdbcConnectionProvider;
+	}
+	
+	/**
+	 * @return the query
+	 */
+	public net.forwardfire.vasc.xpql.query.Query getQuery() {
+		return query;
+	}
+
+	/**
+	 * @param query the query to set
+	 */
+	public void setQuery(net.forwardfire.vasc.xpql.query.Query query) {
+		this.query = query;
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#execute(VascBackendState state)
+	 */
+	public List<Object> execute(VascBackendState state) throws VascException {
+        // Copy parameters
+        for (String key:state.getDataParameterKeys()) {
+        	Object value = state.getDataParameter(key);
+        	query.setQueryParameter(key, value);
+        }
+		Connection c = null;
+		try {
+			c = getJdbcConnectionProvider().getJdbcConnection();;
+			PreparedStatement q = c.prepareStatement(query.toPreparedSQL(query));
+            
+            List<QueryParameterValue> values = query.getOrderQueryParameterValues();
+            int ii = 1;
+            for (QueryParameterValue value:values) {
+            	q.setObject(ii,value.getValue());          	
+            	ii++;
+            }
+            q.execute();
+            ResultSet rs = q.getResultSet();
+			int cols = rs.getMetaData().getColumnCount();
+			List<Object> result = new ArrayList<Object>(50); 
+			while (rs.next()) {
+				Map<String,Object> map = new HashMap<String,Object>(cols);
+				for (int i=1;i<=cols;i++) {
+					String columnName = rs.getMetaData().getColumnName(i);
+					Object columnObject = rs.getObject(i);
+					map.put(columnName, columnObject);
+				}
+				result.add(map);
+			}
+			return result;
+		} catch (Exception e) {
+			throw new VascException(e);
+        } finally {
+            if (c!=null) {
+            	try {
+            		c.close();
+            	} catch (Exception e) {
+            	}
+            }
+        }
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#merge(java.lang.Object)
+	 */
+	public Object merge(Object object) throws VascException {
+		return object;
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#persist(java.lang.Object)
+	 */
+	public void persist(Object object) throws VascException {	
+	}
+	
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#delete(java.lang.Object)
+	 */
+	public void delete(Object object) throws VascException {
+	}
+	
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#provideVascEntryFieldValue(net.forwardfire.vasc.core.VascEntryField)
+	 */
+	public VascEntryFieldValue provideVascEntryFieldValue(VascEntryField field) {
+		return new MapVascEntryFieldValue();
+	}
+
+	/**
+	 * @see net.forwardfire.vasc.backend.VascBackend#provideVascEntryRecordCreator(net.forwardfire.vasc.core.VascEntry)
+	 */
+	public VascEntryRecordCreator provideVascEntryRecordCreator(VascEntry vascEntry) {
+		return new MapVascEntryRecordCreator();
+	}
+}

vasc-backend/vasc-backend-jdbc/src/main/resources/META-INF/vasc/vasc-backend-jdbc.eld

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<eld:root xmlns:eld="http://eld.x4o.org/eld/eld-lang.eld">	
+
+	<eld:elementClass tag="jdbcBackend"						objectClassName="net.forwardfire.vasc.backend.jdbc.JdbcVascBackend">
+		<eld:elementConfigurator  bean.class="net.forwardfire.vasc.impl.x4o.VascBackendElementConfigurator" configAction="true"/>
+	</eld:elementClass>
+	<eld:elementClass tag="jdbcConnectionProvider"			objectClassName="net.forwardfire.vasc.backend.jdbc.JdbcConnectionProviderImpl"/>
+	<eld:elementClass tag="jdbcConnectionProviderJndi"		objectClassName="net.forwardfire.vasc.backend.jdbc.JdbcConnectionProviderJdniImpl"/>
+	
+	<eld:elementClass tag="jdbcBackendXpql"					objectClassName="net.forwardfire.vasc.backend.jdbc.JdbcVascBackendXpql">
+		<eld:elementConfigurator  bean.class="net.forwardfire.vasc.impl.x4o.VascBackendElementConfigurator" configAction="true"/>
+	</eld:elementClass>
+	
+</eld:root>

vasc-backend/vasc-backend-jdbc/src/main/resources/META-INF/vasc/vasc-namespaces.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
+<properties>
+	<comment>
+		Vasc namespace for the jdbc backend
+	</comment>
+	<entry key="eld.http://vasc.forwardfire.net/eld/vasc-backend-jdbc.eld">vasc-backend-jdbc.eld</entry>
+</properties>