Dynamic list constraint not updating in alfresco on a datalist - dynamic

Question

I tried to create a dynamic list constraint. The data in the drop down is not getting refreshed when an item is added to the database.
ListOfValuesQueryConstraint.java
package org.alfresco.ryden;
import java.util.ArrayList;
import java.util.List;
import java.io.Serializable;
import java.sql.*;
import org.alfresco.repo.dictionary.constraint.ListOfValuesConstraint;
import org.alfresco.web.bean.generator.BaseComponentGenerator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.faces.model.SelectItem;
public class ListOfValuesQueryConstraint extends ListOfValuesConstraint implements Serializable {
private static Log logger = LogFactory.getLog(BaseComponentGenerator.class);
private static final long serialVersionUID=1;
private List allowedLabels;
public void setAllowedValues(List allowedValues) {}
public void setCaseSensitive(boolean caseSensitive) {}
public void initialize() {
super.setCaseSensitive(false);
this.loadDB();
}
public List getAllowedValues() {
this.loadDB();
return super.getAllowedValues(); // In earlier post there is no return statement..
//return this.getAllowedValues();
}
public List getAllowedLabels() {
return this.allowedLabels;
}
public void setAllowedLabels(List allowedLabels) {
this.allowedLabels=allowedLabels;
}
public List getSelectItemList() {
List result = new ArrayList(this.getAllowedValues().size());
for(int i=0;i<this.getAllowedValues().size();i++) {
result.add(new SelectItem((Object)this.getAllowedValues().get(i),this.allowedLabels.get(i)));
}
return result;
}
protected void loadDB() {
String driverName = "com.mysql.jdbc.Driver";
String serverName = "localhost:3307";
String mydatabase = "propertyrecord";
String username = "propertyrecord";
String password = "rydenproperty";
List av = new ArrayList();
List al=new ArrayList();
try {
Connection connection = null;
Class.forName(driverName);
String url = “jdbc:mysql://” + serverName + “/” + mydatabase;
connection = DriverManager.getConnection(url, username, password);
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery(“select propertyRef from propertyrecord”);
while (rs.next()) {
av.add(rs.getString(“propertyRef”));
al.add(rs.getString(“propertyRef”));
System.out.println(“value of prop pavani “+rs.getString(“propertyRef”));
logger.debug(“value of prop pavani “+rs.getString(“propertyRef”));
}
rs=null;
}
catch (Exception e) {}
super.setAllowedValues(av);
this.setAllowedLabels(al);
}
}
CustomListComponentGenerator.java
package org.alfresco.ryden;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.component.UISelectOne;
import javax.faces.context.FacesContext;
import org.alfresco.repo.dictionary.constraint.ListOfValuesConstraint;
import org.alfresco.service.cmr.dictionary.Constraint;
import org.alfresco.service.cmr.dictionary.ConstraintDefinition;
import org.alfresco.service.cmr.dictionary.PropertyDefinition;
import org.alfresco.web.bean.generator.TextFieldGenerator;
import org.alfresco.web.ui.repo.component.property.PropertySheetItem;
import org.alfresco.web.ui.repo.component.property.UIPropertySheet;
import org.apache.log4j.Logger;
import org.alfresco.ryden.ListOfValuesQueryConstraint;
public class CustomListComponentGenerator extends TextFieldGenerator {
private static Logger log = Logger.getLogger(CustomListComponentGenerator.class);
// private String tutorialQuery =
// “( TYPE:\”{http://www.alfresco.org/model/content/1.0}content\” AND
// (#\\{http\\://www.alfresco.org/model/content/1.0\\}name:\”tutorial\”
// TEXT:\”tutorial\”))”
// ;
private boolean autoRefresh = false;
public boolean isAutoRefresh() {
return autoRefresh;
}
/**
* This gets set from faces-config-beans.xml, and allows some drop downs to
* be automaticlaly refreshable (i.e. country), and others not (i.e. city).
*/
public void setAutoRefresh(boolean autoRefresh) {
this.autoRefresh = autoRefresh;
}
#Override
#SuppressWarnings(“unchecked”)
protected UIComponent createComponent(FacesContext context, UIPropertySheet propertySheet, PropertySheetItem item) {
UIComponent component = super.createComponent(context, propertySheet, item);
log.info(“********************** ” + item + ” >” + component + ” >” + (component instanceof UISelectOne) + ” ” + isAutoRefresh());
if (component instanceof UISelectOne && isAutoRefresh()) {
component.getAttributes().put(“onchange”, “submit()”);
}
return component;
}
/**
* Retrieves the list of values constraint for the item, if it has one
*
* #param context
* FacesContext
* #param propertySheet
* The property sheet being generated
* #param item
* The item being generated
* #return The constraint if the item has one, null otherwise
*/
protected ListOfValuesConstraint getListOfValuesConstraint(FacesContext context, UIPropertySheet propertySheet, PropertySheetItem item) {
ListOfValuesConstraint lovConstraint = null;
log.info(“propertySheet: ” + propertySheet.getNode() + ” item: ” + item.getName());
// get the property definition for the item
PropertyDefinition propertyDef = getPropertyDefinition(context, propertySheet.getNode(), item.getName());
if (propertyDef != null) {
// go through the constaints and see if it has the
// list of values constraint
List constraints = propertyDef.getConstraints();
for (ConstraintDefinition constraintDef : constraints) {
Constraint constraint = constraintDef.getConstraint();
//log.info(“constraint: ” + constraint);
if (constraint instanceof ListOfValuesQueryConstraint) {
//Node currentNode = (Node) propertySheet.getNode();
// This is a workaround for the fact that constraints do not
// have a reference to Node.
//((ListOfValuesQueryConstraint) constraint).setNode(currentNode);
lovConstraint = (ListOfValuesQueryConstraint) constraint;
break;
}
if (constraint instanceof ListOfValuesConstraint) {
lovConstraint = (ListOfValuesConstraint) constraint;
break;
}
}
}
return lovConstraint;
}
}
custom-model.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- Definition of Property Base Model -->
<model name="cdl:customdatalist" xmlns="http://www.alfresco.org/model/dictionary/1.0">
<!-- Optional meta-data about the model -->
<description>Custom Data Model</description>
<author>Lalitha Akella</author>
<version>1.0</version>
<!-- Imports are required to allow references to definitions in other models -->
<imports>
<!-- Import Alfresco Dictionary Definitions -->
<import uri="http://www.alfresco.org/model/dictionary/1.0" prefix="d"/>
<!-- Import Alfresco Content Domain Model Definitions -->
<import uri="http://www.alfresco.org/model/content/1.0" prefix="cm"/>
<import uri="http://www.alfresco.org/model/datalist/1.0" prefix="dl"/>
</imports>
<!-- Introduction of new namespaces defined by this model -->
<namespaces>
<namespace uri="cdl.model" prefix="cdl"/>
</namespaces>
<constraints>
<constraint name="cdl:PropertyRef" type="org.alfresco.ryden.ListOfValuesQueryConstraint" >
<parameter name="allowedValues">
<list>
</list>
</parameter>
<parameter name="caseSensitive"><value>true</value></parameter>
</constraint>
</constraints>
<types>
<type name="cdl:applicationform">
<title>Custom Application Form</title>
<parent>dl:dataListItem</parent>
<properties>
<property name="cdl:applicationpropertyRef">
<title>Property Reference</title>
<type>d:text</type>
<mandatory>true</mandatory>
<constraints>
<constraint ref="cdl:PropertyRef" />
</constraints>
</property>
<property name="cdl:applicationpropAddress">
<title>Property Address</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:apcreateddate">
<title>Created Date</title>
<type>d:date</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:apcreatedby">
<title>Created By</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:applicationstatus">
<title>Application Status</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:applicationlink">
<title>Application Workflow Link</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
</properties>
<associations>
<association name="cdl:applicationassignee">
<title>Assignee</title>
<source>
<mandatory>true</mandatory>
<many>true</many>
</source>
<target>
<class>cm:person</class>
<mandatory>true</mandatory>
<many>false</many>
</target>
</association>
<association name="cdl:applicationattachments">
<title>Attachments</title>
<source>
<mandatory>true</mandatory>
<many>true</many>
</source>
<target>
<class>cm:cmobject</class>
<mandatory>true</mandatory>
<many>true</many>
</target>
</association>
</associations>
</type>
<type name="cdl:terminationform">
<title>Custom Termination Form</title>
<parent>dl:dataListItem</parent>
<properties>
<property name="cdl:terminationpropertyRef">
<title>Property Reference</title>
<type>d:text</type>
<mandatory>true</mandatory>
<constraints>
<constraint ref="cdl:PropertyRef" />
</constraints>
</property>
<property name="cdl:trcreateddate">
<title>Created Date</title>
<type>d:date</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:trcreatedby">
<title>Created By</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:terminationstatus">
<title>Termination Status</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
<property name="cdl:terminationlink">
<title>Termination Workflow Link</title>
<type>d:text</type>
<mandatory>false</mandatory>
</property>
</properties>
<associations>
<association name="cdl:terminationassignee">
<title>Assignee</title>
<source>
<mandatory>true</mandatory>
<many>true</many>
</source>
<target>
<class>cm:person</class>
<mandatory>true</mandatory>
<many>false</many>
</target>
</association>
<association name="cdl:terminationattachments">
<title>Attachments</title>
<source>
<mandatory>true</mandatory>
<many>true</many>
</source>
<target>
<class>cm:cmobject</class>
<mandatory>true</mandatory>
<many>true</many>
</target>
</association>
</associations>
</type>
</types>
</model>
web-client-config-custom.xml
<config evaluator="node-type" condition="cdl:assignationform">
<property-sheet>
<show-property name="cdl:assignationpropertyRef" component-generator="CustomListComponentGenerator" />
</property-sheet>
</config>
faces-config-beans.xml
<managed-bean>
<description>
Bean that generates a custom generator component
</description>
<managed-bean-name>
CustomListComponentGenerator
</managed-bean-name>
<managed-bean-class>
org.alfresco.ryden.CustomListComponentGenerator
</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>autoRefresh</property-name>
<value>true</value>
</managed-property>
</managed-bean>
I don't know whether I should be changing any other files or some thing is wrong in the code above.
I am new To alfresco. Any help is deeply appreciated.
Thanks,
Pavani

Answer 1

Try the following and change to as needed, as it works
ListOfCountriesQueryConstraint.java
package org.spectrum.customConstraints;
import java.util.ArrayList;
import java.util.List;
import java.sql.*;
import org.alfresco.repo.dictionary.constraint.ListOfValuesConstraint;
import org.alfresco.web.bean.generator.BaseComponentGenerator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.Serializable;
import javax.faces.model.SelectItem;
public class ListOfCountriesQueryConstraint extends ListOfValuesConstraint implements Serializable {
private static Log logger = LogFactory.getLog(BaseComponentGenerator.class);
private static final long serialVersionUID = 1;
private List<String> allowedLabels;
#Override
public void setAllowedValues(List allowedValues) {
}
#Override
public void setCaseSensitive(boolean caseSensitive) {
}
#Override
public void initialize() {
super.setCaseSensitive(false);
this.loadDB();
}
#Override
public List getAllowedValues() {
this.loadDB();
return super.getAllowedValues();
}
public List<String> getAllowedLabels() {
return this.allowedLabels;
}
public void setAllowedLabels(List<String> allowedLabels) {
this.allowedLabels = allowedLabels;
}
public List<SelectItem> getSelectItemList() {
List<SelectItem> result = new ArrayList<SelectItem>(this.getAllowedValues().size());
for (int i = 0; i < this.getAllowedValues().size(); i++) {
result.add(new SelectItem((Object) this.getAllowedValues().get(i), this.allowedLabels.get(i)));
}
return result;
}
protected void loadDB() {
String driverName = "org.gjt.mm.mysql.Driver";
String serverName = "alfrescotest";
String mydatabase = "alfresco_custom";
String username = "root";
String password = "support";
List<String> av = new ArrayList<String>();
List<String> al = new ArrayList<String>();
try {
Connection connection = null;
Class.forName(driverName);
String url = "jdbc:mysql://" + serverName + "/" + mydatabase;
connection = DriverManager.getConnection(url, username, password);
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("select country from countries");
while (rs.next()) {
av.add(rs.getString("country"));
al.add(rs.getString("country"));
}
} catch (Exception e) {
}
super.setAllowedValues(av);
this.setAllowedLabels(al);
}
}
custom-model.xml
<constraint name="sp:country" type="org.spectrum.customConstraints.ListOfCountriesQueryConstraint">
<parameter name="allowedValues">
<list>
</list>
</parameter>
<parameter name="caseSensitive"><value>true</value></parameter>
</constraint>
Make sure to copy the compile java to tomcat/webapps/alfresco/WEB-INF/classes/org/xxx/