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/*
*
* Copyright 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.
*/
/* $Rev$ $Date: 2005/12/22 16:54:14 $ */
#include "samples.h"
using namespace std;
void ChangeSummarySave::sample()
{
cout << " ********** ChangeSummarySave sample********" << endl;
try {
DataFactoryPtr mdg = DataFactory::getDataFactory();
XSDHelperPtr xsh = HelperProvider::getXSDHelper(mdg);
xsh->defineFile("ChangeSummarySave.xsd");
/**
* Load the schema from ChangeSummarySave.xsd
*/
const Type& tstring = mdg->getType("commonj.sdo","String");
const Type& tbool = mdg->getType("commonj.sdo","Boolean");
const Type& tcs = mdg->getType("commonj.sdo","ChangeSummary");
const Type& tcomp = mdg->getType("companyNS","CompanyType");
const Type& tdept = mdg->getType("companyNS","DepartmentType");
const Type& temp = mdg->getType("companyNS","EmployeeType");
/**
* create a graph, set the change summary logging, modify the
* data, then save it to a file
*/
DataObjectPtr comp = mdg->create((Type&)tcomp);
comp->setCString("name","ACME");
DataObjectPtr dept = mdg->create((Type&)tdept);
DataObjectList& dol = comp->getList("departments");
dol.append(dept);
dept->setCString("name","Advanced Technologies");
dept->setCString("location","NY");
dept->setCString("number","123");
DataObjectPtr emp1 = mdg->create(temp);
DataObjectPtr emp2 = mdg->create(temp);
DataObjectPtr emp3 = mdg->create(temp);
emp1->setCString("name","John Jones");
emp1->setCString("SN","E0001");
emp2->setCString("name","Mary Smith");
emp2->setCString("SN","E0002");
emp2->setBoolean("manager",true);
emp3->setCString("name","Jane Doe");
emp3->setCString("SN","E0003");
DataObjectList& dol2 = dept->getList("employees");
dol2.append(emp1);
dol2.append(emp2);
dol2.append(emp3);
/**
* Set the employee of the month - which is a reference, not
* a containment value
*/
comp->setDataObject("employeeOfTheMonth",emp2);
/**
* The XSD defined the company type as having a change summary,
* so we can get it...
*/
ChangeSummaryPtr cs = comp->getChangeSummary();
/**
* And ask it to start logging...
*/
cs->beginLogging();
/**
* With logging on, create a new employee
*/
DataObjectPtr emp4 = mdg->create(temp);
emp4->setCString("name","Al Smith");
emp4->setCString("SN","E0004");
emp4->setBoolean("manager",true);
/**
* The first recorded change happens now, as the employee is
* added into the data graph. Emp4 (Al Smith) will appear in the
* change summary as a creation. There will also be a change
* record for the list "employees" of this department, holding the
* values before Al was added.
*/
dol2.append(emp4);
/**
* The second change is to remove element 1 from the
* same list - Thats Mary Smith.
* Mary will appear as a deletion, but there will be no extra
* change record for "employees", as its already been changed.
* Mary was employee of the month, so that reference gets
* emptied, and a change record is set up for it, recording
* Mary as the old value.
*/
dol2.remove(1); // element 1 is Mary
DataObjectPtr emp5 = mdg->create(temp);
emp5->setCString("name","Bill Withers");
emp5->setCString("SN","E0005");
/**
* The third change is to append Bill to the same list.
* Bill appears as a creation, but there is no change recorded to
* the employees list.
*/
dol2.append(emp5);
/**
* The company name is changed. A change record is set up for
* the property "name" of this company. It stores the old value
* "ACME"
*/
comp->setCString("name","MegaCorp");
/**
* The company employee of the month is changed. The old
* value has already been changed from Mary to NULL, so no change
* record is created here at all
*/
comp->setDataObject("employeeOfTheMonth",emp4);
/**
* Stop logging changes
*/
cs->endLogging();
XMLHelperPtr xmh = HelperProvider::getXMLHelper(mdg);
XMLDocumentPtr doc = xmh->createDocument(comp,"companyNS","company");
xmh->save(doc,"ChangeSummarySave-output.xml");
/**
* Have a look in the file and see if you can recognise the changes
* above
*/
}
catch (SDORuntimeException e)
{
cout << "Exception in ChangeSummarySave" << endl;
cout << e;
}
cout << " ********** Sample ends ********************" << endl;
}
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