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package org.apache.tuscany.samples.das.companyweb;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import org.apache.tuscany.das.rdb.ApplyChangesCommand;
import org.apache.tuscany.das.rdb.Command;
import org.apache.tuscany.das.rdb.CommandGroup;
import commonj.sdo.DataObject;
public class CompanyClient {
private Random generator = new Random();
private CommandGroup commandGroup = CommandGroup.FACTORY.createCommandGroup(getConfig("CompanyConfig.xml"));
public final List getCompanies() {
Command read = commandGroup.getCommand("all companies");
DataObject root = read.executeQuery();
return root.getList("COMPANY");
}
public final List getCompaniesWithDepartments() {
Command read = commandGroup.getCommand("all companies and departments");
DataObject root = read.executeQuery();
return root.getList("COMPANY");
}
public final List getDepartmentsForCompany(int id) {
Command read = commandGroup.getCommand("all departments for company");
read.setParameterValue("ID", new Integer(id));
DataObject root = read.executeQuery();
return root.getList("COMPANY");
}
public final void addDepartmentToFirstCompany() {
Command read = commandGroup.getCommand("all companies and departments");
DataObject root = read.executeQuery();
DataObject firstCustomer = root.getDataObject("COMPANY[1]");
DataObject newDepartment = root.createDataObject("DEPARTMENT");
newDepartment.setString("NAME", "Default Name");
firstCustomer.getList("departments").add(newDepartment);
ApplyChangesCommand apply = commandGroup.getApplyChangesCommand();
apply.execute(root);
}
public final void deleteDepartmentsFromFirstCompany() {
// This section gets the ID of the first Company just so I can
// demonstrate a parameterized command next
Command readAll = commandGroup.getCommand("all companies and departments");
DataObject root = readAll.executeQuery();
int idOfFirstCustomer = root.getInt("COMPANY[1]/ID");
System.out.println("ID of first company is: " + idOfFirstCustomer);
// Read a specific company based on the known ID
Command readCust = commandGroup.getCommand("company by id with departments");
readCust.setParameterValue("ID", new Integer(idOfFirstCustomer));
root = readCust.executeQuery();
// Delete all the comany's departments from the graph
DataObject firstCustomer = root.getDataObject("COMPANY[1]");
// Shallow copy of list for deleting. This is required to avoid the
// dreaded
// ConcurrentModificationException since #delete operation also removes
// from the original list
List allDepartments = new ArrayList(firstCustomer.getList("departments"));
Iterator i = allDepartments.iterator();
DataObject department;
while (i.hasNext()) {
department = (DataObject) i.next();
System.out.println("Deleting department named: " + department.getString("NAME"));
department.delete();
}
ApplyChangesCommand apply = commandGroup.getApplyChangesCommand();
apply.execute(root);
}
public final void changeFirstCompanysDepartmentNames() {
// This section gets the ID of the first Company just so I can
// demonstrate a parameterized command next
Command readAll = commandGroup.getCommand("all companies and departments");
DataObject root = readAll.executeQuery();
int idOfFirstCustomer = root.getInt("COMPANY[1]/ID");
System.out.println("ID of first company is: " + idOfFirstCustomer);
// Read a specific company based on the known ID
Command readCust = commandGroup.getCommand("company by id with departments");
readCust.setParameterValue("ID", new Integer(idOfFirstCustomer));
root = readCust.executeQuery();
// Modify all the comany's department names
DataObject firstCustomer = root.getDataObject("COMPANY[1]");
Iterator i = firstCustomer.getList("departments").iterator();
DataObject department;
while (i.hasNext()) {
department = (DataObject) i.next();
System.out.println("Modifying department: " + department.getString("NAME"));
department.setString("NAME", getRandomDepartmentName());
}
ApplyChangesCommand apply = commandGroup.getApplyChangesCommand();
apply.execute(root);
}
// Utilities
private String getRandomDepartmentName() {
int number = generator.nextInt(1000) + 1;
return "Dept-" + number;
}
private InputStream getConfig(String fileName) {
return getClass().getClassLoader().getResourceAsStream(fileName);
}
}
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