diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnListParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnListParameter.java
new file mode 100644
index 0000000..be50bd7
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnListParameter.java
@@ -0,0 +1,68 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+
+
+/**
+ * @author ceras
+ *
+ */
+public class ColumnListParameter extends Parameter implements Serializable {
+
+	private static final long serialVersionUID = -6743494426144267089L;
+	String referredTabularParameterName;
+	List<String> columnNames = new ArrayList<String>();
+	String value;
+	private String separator;
+	
+	public ColumnListParameter() {
+		super();
+		this.typology = ParameterTypology.COLUMN_LIST;
+	}
+	
+	public ColumnListParameter(String name, String description, String referredTabularParameterName, String separator) {
+		super(name, ParameterTypology.COLUMN_LIST, description);
+		this.referredTabularParameterName = referredTabularParameterName;
+		this.separator = separator;
+	}
+
+	/**
+	 * @param referredTabularParameterName the referredTabularParameterName to set
+	 */
+	public void setReferredTabularParameterName(String referredTabularParameterName) {
+		this.referredTabularParameterName = referredTabularParameterName;
+	}
+	
+	/**
+	 * @return the referredTabularParameterName
+	 */
+	public String getReferredTabularParameterName() {
+		return referredTabularParameterName;
+	}
+
+	/**
+	 * @return the value
+	 */
+	public String getValue() {
+		return value;
+	}
+	
+	
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+	
+	/**
+	 * @return the separator
+	 */
+	public String getSeparator() {
+		return separator;
+	}
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnParameter.java
new file mode 100644
index 0000000..f9c0b9b
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ColumnParameter.java
@@ -0,0 +1,82 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.io.Serializable;
+
+
+/**
+ * @author ceras
+ *
+ */
+public class ColumnParameter extends Parameter implements Serializable {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -5084557326770554659L;
+	String referredTabularParameterName;
+	String defaultColumn;
+	String value;
+
+	/**
+	 * 
+	 */
+	public ColumnParameter() {
+		super();
+		this.typology = ParameterTypology.COLUMN;
+	}
+
+	/**
+	 * 
+	 */
+	public ColumnParameter(String name, String description, String referredTabularParameterName, String defaultColumn) {
+		super(name, ParameterTypology.COLUMN, description);
+		this.referredTabularParameterName = referredTabularParameterName;
+		this.defaultColumn = defaultColumn;
+	}
+
+	/**
+	 * @param referredTabularParameterName the referredTabularParameterName to set
+	 */
+	public void setReferredTabularParameterName(
+			String referredTabularParameterName) {
+		this.referredTabularParameterName = referredTabularParameterName;
+	}
+	
+	/**
+	 * @return the referredTabularParameterName
+	 */
+	public String getReferredTabularParameterName() {
+		return referredTabularParameterName;
+	}
+
+	/**
+	 * @return the defaultValue
+	 */
+	public String getDefaultColumn() {
+		return defaultColumn;
+	}
+	
+	/**
+	 * @param defaultValue the defaultValue to set
+	 */
+	public void setDefaultColumn(String defaultColumn) {
+		this.defaultColumn = defaultColumn;
+	}
+	
+	/**
+	 * @return the value
+	 */
+	public String getValue() {
+		return value;
+	}
+	
+	
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/EnumParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/EnumParameter.java
new file mode 100644
index 0000000..546538c
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/EnumParameter.java
@@ -0,0 +1,89 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.google.gwt.user.client.rpc.IsSerializable;
+
+/**
+ * @author ceras
+ *
+ */
+public class EnumParameter extends Parameter implements IsSerializable {
+
+	private static final long serialVersionUID = 1673874854501249519L;
+	List<String> values = new ArrayList<String>();
+	String defaultValue;
+	String value;
+	
+
+	/**
+	 * 
+	 */
+	public EnumParameter() {
+		super();
+		this.typology = ParameterTypology.ENUM;
+	}
+	
+	/**
+	 * @param type
+	 * @param defaultValue
+	 * @param value
+	 */
+	public EnumParameter(String name, String description, List<String> values, String defaultValue) {
+		super(name, ParameterTypology.ENUM, description);
+		this.values = values;
+		this.defaultValue = defaultValue;
+	}
+
+
+	/**
+	 * @return the defaultValue
+	 */
+	public String getDefaultValue() {
+		return defaultValue;
+	}
+	
+	/**
+	 * @param defaultValue the defaultValue to set
+	 */
+	public void setDefaultValue(String defaultValue) {
+		this.defaultValue = defaultValue;
+	}
+	
+	/**
+	 * @param values the values to set
+	 */
+	public void setValues(List<String> values) {
+		this.values = values;
+	}
+	
+	/**
+	 * @return the values
+	 */
+	public List<String> getValues() {
+		return values;
+	}
+	
+	public void addValue(String value) {
+		this.values.add(value);
+	}
+	
+	/**
+	 * @return the value
+	 */
+	@Override
+	public String getValue() {
+		return value;
+	}
+	
+	
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/FileParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/FileParameter.java
new file mode 100644
index 0000000..4b31bcc
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/FileParameter.java
@@ -0,0 +1,81 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.util.ArrayList;
+
+import com.google.gwt.user.client.rpc.IsSerializable;
+
+/**
+ * @author ceras
+ *
+ */
+public class FileParameter extends Parameter implements IsSerializable {
+
+	private static final long serialVersionUID = -2967577990287112937L;
+	private String value;
+	private String defaultMimeType;
+	private ArrayList<String> supportedMimeTypes;
+	/**
+	 * 
+	 */
+	public FileParameter() {
+		super();
+		this.typology = ParameterTypology.FILE;
+	}
+	
+	/**
+	 * 
+	 * @param name
+	 * @param description
+	 * @param fileName
+	 * @param mimeType
+	 */
+	public FileParameter(String name, String description, String defaultMimeType, ArrayList<String> supportedMimeTypes) {
+		super(name, ParameterTypology.FILE, description);
+		this.defaultMimeType = defaultMimeType;
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	public String getDefaultMimeType() {
+		return defaultMimeType;
+	}
+
+	public void setDefaultMimeType(String defaultMimeType) {
+		this.defaultMimeType = defaultMimeType;
+	}
+
+	public ArrayList<String> getSupportedMimeTypes() {
+		return supportedMimeTypes;
+	}
+
+	public void setSupportedMimeTypes(ArrayList<String> supportedMimeTypes) {
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	/**
+	 * 
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * 
+	 */
+	@Override
+	public void setValue(String value) {
+		this.value=value;
+	}
+
+	@Override
+	public String toString() {
+		return "FileParameter [value=" + value + ", defaultMimeType="
+				+ defaultMimeType + ", supportedMimeTypes="
+				+ supportedMimeTypes + "]";
+	}
+
+	
+	
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ListParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ListParameter.java
new file mode 100644
index 0000000..e36d8aa
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ListParameter.java
@@ -0,0 +1,81 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import com.google.gwt.user.client.rpc.IsSerializable;
+
+
+/**
+ * @author ceras
+ *
+ */
+public class ListParameter extends Parameter implements IsSerializable {
+
+	private static final long serialVersionUID = 5405965026753332225L;
+	private String type;
+	private String value;
+	private String separator;
+
+	/**
+	 * 
+	 */
+	public ListParameter() {
+		super();
+		this.typology = ParameterTypology.LIST;
+	}
+
+	/**
+	 * @param defaultValue
+	 * @param value
+	 */
+	public ListParameter(String name, String description, String type, String separator) {
+		super(name, ParameterTypology.LIST, description);
+		this.type = type;
+		this.separator = separator;
+	}
+	
+	/**
+	 * @return the type
+	 */
+	public String getType() {
+		return type;
+	}
+	
+	/**
+	 * @param type the type to set
+	 */
+	public void setType(String type) {
+		this.type = type;
+	}
+	
+	
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+		
+	
+	@Override
+	public String getValue() {
+		return value;
+	}
+	
+	/**
+	 * @return the separator
+	 */
+	public String getSeparator() {
+		return separator;
+	}
+
+	@Override
+	public String toString() {
+		return "ListParameter [type=" + type + ", value=" + value
+				+ ", separator=" + separator + ", name=" + name
+				+ ", description=" + description + ", typology=" + typology
+				+ "]";
+	}
+	
+	
+	
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ObjectParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ObjectParameter.java
new file mode 100644
index 0000000..0b5ad83
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/ObjectParameter.java
@@ -0,0 +1,88 @@
+
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import com.google.gwt.user.client.rpc.IsSerializable;
+
+/**
+ * @author ceras
+ *
+ */
+public class ObjectParameter extends Parameter implements IsSerializable {
+	
+	private static final long serialVersionUID = 1058462575242430851L;
+	private String type;
+	private String defaultValue;
+	private String value;
+	
+	
+	/**
+	 * 
+	 */
+	public ObjectParameter() {
+		super();
+		this.typology = ParameterTypology.OBJECT;
+	}
+	
+	
+	public ObjectParameter(String name, String description, String type, String defaultValue) {
+		super(name, ParameterTypology.OBJECT, description);
+		this.type = type;
+		this.defaultValue = defaultValue;
+	}
+	
+	/**
+	 * @return the type
+	 */
+	public String getType() {
+		return type;
+	}
+	
+	/**
+	 * @param type the type to set
+	 */
+	public void setType(String type) {
+		this.type = type;
+	}
+	
+	/**
+	 * @return the defaultValue
+	 */
+	public String getDefaultValue() {
+		return defaultValue;
+	}
+	
+	/**
+	 * @param defaultValue the defaultValue to set
+	 */
+	public void setDefaultValue(String defaultValue) {
+		this.defaultValue = defaultValue;
+	}
+	
+	/**
+	 * @return the value
+	 */
+	public String getValue() {
+		return value;
+	}
+	
+	
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+
+	@Override
+	public String toString() {
+		return "ObjectParameter [type=" + type + ", defaultValue="
+				+ defaultValue + ", value=" + value + ", name=" + name
+				+ ", description=" + description + ", typology=" + typology
+				+ "]";
+	}
+
+
+	
+	
+	
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/Parameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/Parameter.java
new file mode 100644
index 0000000..d9c0cd8
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/Parameter.java
@@ -0,0 +1,130 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.io.Serializable;
+
+/**
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public abstract class Parameter implements Serializable {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -555286289487491703L;
+
+	public enum ParameterTypology {
+		OBJECT, TABULAR, FILE, ENUM, LIST, COLUMN, COLUMN_LIST, TABULAR_LIST
+	};
+
+	protected String name;
+	protected String description;
+	protected ParameterTypology typology;
+
+	/**
+	 * 
+	 */
+	public Parameter() {
+		super();
+	}
+
+	/**
+	 * @param name
+	 * @param type
+	 * @param description
+	 * @param defaultValue
+	 * @param value
+	 */
+	public Parameter(String name, ParameterTypology type, String description) {
+		super();
+		this.name = name;
+		this.typology = type;
+		this.description = description;
+	}
+
+	public abstract void setValue(String value);
+
+	public abstract String getValue();
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the typology
+	 */
+	public ParameterTypology getTypology() {
+		return typology;
+	}
+
+	/**
+	 * @param typology
+	 *            the typology to set
+	 */
+	public void setTypology(ParameterTypology typology) {
+		this.typology = typology;
+	}
+
+	/**
+	 * @return the description
+	 */
+	public String getDescription() {
+		return description;
+	}
+
+	/**
+	 * @param description
+	 *            the description to set
+	 */
+	public void setDescription(String description) {
+		this.description = description;
+	}
+
+	public boolean isObject() {
+		return this.typology == ParameterTypology.OBJECT;
+	}
+
+	public boolean isTabular() {
+		return this.typology == ParameterTypology.TABULAR;
+	}
+
+	public boolean isFile() {
+		return this.typology == ParameterTypology.FILE;
+	}
+
+	public boolean isEnum() {
+		return this.typology == ParameterTypology.ENUM;
+	}
+
+	public boolean isList() {
+		return this.typology == ParameterTypology.LIST;
+	}
+
+	public boolean isColumn() {
+		return this.typology == ParameterTypology.COLUMN;
+	}
+
+	public boolean isColumnList() {
+		return this.typology == ParameterTypology.COLUMN_LIST;
+	}
+
+	public boolean isTabularList() {
+		return this.typology == ParameterTypology.TABULAR_LIST;
+	}
+
+	@Override
+	public String toString() {
+		return "Parameter [name=" + name + ", description=" + description
+				+ ", typology=" + typology + "]";
+	}
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularListParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularListParameter.java
new file mode 100644
index 0000000..b3ce06f
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularListParameter.java
@@ -0,0 +1,106 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+
+/**
+ * @author ceras
+ *
+ */
+public class TabularListParameter extends Parameter implements Serializable {
+
+	private static final long serialVersionUID = -1786477950530892502L;
+	private String value;
+	private String separator;
+	private ArrayList<String> templates = new ArrayList<String>();
+	private String defaultMimeType;
+	private ArrayList<String> supportedMimeTypes;
+
+	// private List<String> tableNames = new ArrayList<String>();
+
+	public TabularListParameter() {
+		super();
+		this.typology = ParameterTypology.TABULAR_LIST;
+	}
+
+	/**
+	 * @param defaultValue
+	 * @param value
+	 */
+	public TabularListParameter(String name, String description,
+			String separator, String defaultMimeType,
+			ArrayList<String> supportedMimeTypes) {
+		super(name, ParameterTypology.TABULAR_LIST, description);
+		this.separator = separator;
+		this.defaultMimeType = defaultMimeType;
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	@Override
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+	@Override
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * @return the separator
+	 */
+	public String getSeparator() {
+		return separator;
+	}
+
+	/**
+	 * @param templates
+	 *            the templates to set
+	 */
+	public void setTemplates(ArrayList<String> templates) {
+		this.templates = templates;
+	}
+
+	/**
+	 * @return the templates
+	 */
+	public ArrayList<String> getTemplates() {
+		return templates;
+	}
+
+	public void addTemplate(String template) {
+		templates.add(template);
+	}
+
+	public String getDefaultMimeType() {
+		return defaultMimeType;
+	}
+
+	public void setDefaultMimeType(String defaultMimeType) {
+		this.defaultMimeType = defaultMimeType;
+	}
+
+	public ArrayList<String> getSupportedMimeTypes() {
+		return supportedMimeTypes;
+	}
+
+	public void setSupportedMimeTypes(ArrayList<String> supportedMimeTypes) {
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	public void setSeparator(String separator) {
+		this.separator = separator;
+	}
+
+	@Override
+	public String toString() {
+		return "TabularListParameter [value=" + value + ", separator="
+				+ separator + ", templates=" + templates + ", defaultMimeType="
+				+ defaultMimeType + ", supportedMimeTypes="
+				+ supportedMimeTypes + "]";
+	}
+
+}
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularParameter.java b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularParameter.java
new file mode 100644
index 0000000..56ba1a6
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/shared/parameters/TabularParameter.java
@@ -0,0 +1,113 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.shared.parameters;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+
+/**
+ * 
+ * @author Giancarlo Panichi
+ * email: <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ *
+ */
+public class TabularParameter extends Parameter implements Serializable {
+
+	private static final long serialVersionUID = 8038591467145151553L;
+	private String tableName;
+	private ArrayList<String> templates = new ArrayList<String>();
+	private String defaultMimeType;
+	private ArrayList<String> supportedMimeTypes;
+
+	/**
+	 * 
+	 */
+	public TabularParameter() {
+		super();
+		this.typology = ParameterTypology.TABULAR;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param description
+	 * @param tableName
+	 */
+	public TabularParameter(String name, String description, String tableName,
+			String defaultMimeType, ArrayList<String> supportedMimeTypes) {
+		super(name, ParameterTypology.TABULAR, description);
+		this.tableName = tableName;
+		this.templates = null;
+		this.defaultMimeType = defaultMimeType;
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param description
+	 * @param tableName
+	 * @param templates
+	 */
+	public TabularParameter(String name, String description, String tableName,
+			ArrayList<String> templates, String defaultMimeType,
+			ArrayList<String> supportedMimeTypes) {
+		super(name, ParameterTypology.TABULAR, description);
+		this.tableName = tableName;
+		this.templates = templates;
+		this.defaultMimeType = defaultMimeType;
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	public String getTableName() {
+		return tableName;
+	}
+
+	public void setTableName(String tableName) {
+		this.tableName = tableName;
+	}
+
+	public ArrayList<String> getTemplates() {
+		return templates;
+	}
+
+	public void setTemplates(ArrayList<String> templates) {
+		this.templates = templates;
+	}
+
+	@Override
+	public String getValue() {
+		return getTableName();
+	}
+
+	@Override
+	public void setValue(String value) {
+		this.setTableName(value);
+	}
+
+	public String getDefaultMimeType() {
+		return defaultMimeType;
+	}
+
+	public void setDefaultMimeType(String defaultMimeType) {
+		this.defaultMimeType = defaultMimeType;
+	}
+
+	public ArrayList<String> getSupportedMimeTypes() {
+		return supportedMimeTypes;
+	}
+
+	public void setSupportedMimeTypes(ArrayList<String> supportedMimeTypes) {
+		this.supportedMimeTypes = supportedMimeTypes;
+	}
+
+	@Override
+	public String toString() {
+		return "TabularParameter [tableName=" + tableName + ", templates="
+				+ templates + ", defaultMimeType=" + defaultMimeType
+				+ ", supportedMimeTypes=" + supportedMimeTypes + "]";
+	}
+
+	
+}