Object serialization: Difference between revisions
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Wanda, id=7 is alive |
Wanda, id=7 is alive |
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Kiki, id=3 is dead</pre> |
Kiki, id=3 is dead</pre> |
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=={{header|Caché ObjectScript}}== |
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<lang cos>Class Serialize.Employee Extends %SerialObject |
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{ |
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Method %OnNew(ByRef pId As %Integer = 0, pDepartment As %String, pName As %String) As %Status |
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{ |
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Do ..IDSet(pId) |
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Set pId=pId+1 |
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Do ..DepartmentSet(pDepartment) |
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Do ..NameSet(pName) |
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Quit $$$OK |
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} |
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Method Print() |
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{ |
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Write "[", ..%ClassName(), "]", ! |
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Write "- ID: "_..IDGet(), ! |
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Write "- Name: "_..NameGet(), ! |
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Write "- Department: "_..DepartmentGet(), ! |
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Quit |
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} |
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Property ID As %Integer [ Private ]; |
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Property Name As %String [ Private ]; |
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Property Department As %String [ Private ]; |
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}</lang> |
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<lang cos>Class Serialize.Worker Extends Employee |
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{ |
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Method HourlyPaySet(pHourlyPay As %Numeric) As %Status [ ServerOnly = 1 ] |
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{ |
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Set i%HourlyPay=$Select(pHourlyPay<0: 0, 1: pHourlyPay) |
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Quit $$$OK |
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} |
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Method %OnNew(ByRef pId As %Integer = 0, pDepartment As %String, pName As %String, pHourlyPay As %Numeric) As %Status |
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{ |
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Do ..HourlyPaySet(pHourlyPay) |
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Quit ##super(.pId, pDepartment, pName) |
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} |
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Method Print() |
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{ |
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Do ##super() |
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Write "- Hourly Pay: ", $FNumber(..HourlyPayGet(), ",", 2), ! |
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Quit |
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} |
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Property HourlyPay As %Numeric [ Private ]; |
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}</lang> |
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<lang cos>Class Serialize.Example Extends %SerialObject |
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{ |
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ClassMethod Main() |
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{ |
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Do ..Save("/temp/objects.dat") |
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Do ..Load("/temp/objects.dat") |
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Quit |
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} |
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ClassMethod Save(pFilename As %String) |
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{ |
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// creating objects of base class |
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Set emp1 = ##class(Employee).%New(.id, "Maintenance", "Fritz Schmalstieg") |
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Set emp2 = ##class(Employee).%New(.id, "Maintenance", "John Berry") |
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Set emp3 = ##class(Employee).%New(.id, "Repair", "Pawel Lichatschow") |
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Set emp4 = ##class(Employee).%New(.id, "IT", "Marian Niculescu") |
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// creating objects of derived class |
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Set worker1 = ##class(Worker).%New(.id, "Maintenance", "Laurent Le Chef", 20) |
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Set worker2 = ##class(Worker).%New(.id, "IT", "Srinivan Taraman", 55.35) |
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// put objects into collections |
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Set example = ..%New() |
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Set sc = example.Employees.Insert(emp1) |
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Set sc = example.Employees.Insert(emp2) |
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Set sc = example.Employees.Insert(emp3) |
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Set sc = example.Employees.Insert(emp4) |
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Set sc = example.Workers.Insert(worker1) |
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Set sc = example.Workers.Insert(worker2) |
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// serialize the data and save to a file |
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Set sc=example.%GetSwizzleObject(,.oid) |
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Set fs=##class(%Stream.FileBinary).%New() |
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Set fs.Filename=pFilename |
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Set sc=fs.Write(oid) |
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Set sc=fs.%Save() |
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Quit |
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} |
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ClassMethod Load(pFilename As %String) |
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{ |
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// read serialized data from file |
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Set fs=##class(%Stream.FileBinary).%New() |
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Set fs.Filename=pFilename |
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Set oid=fs.Read(.len, .sc) |
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// open the example object |
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Set example = ..%Open(oid,, .sc) |
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Do example.Employees.GetAt(1).Print() |
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Do example.Employees.GetAt(3).Print() |
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Do example.Workers.GetAt(2).Print() |
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Quit |
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} |
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Property Employees As list Of Employee; |
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Property Workers As list Of Worker; |
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}</lang> |
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{{out|Examples}} |
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<pre> |
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USER>Do ##class(Serialize.Example).Main() |
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[Employee] |
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- ID: 0 |
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- Name: Fritz Schmalstieg |
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- Department: Maintenance |
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[Employee] |
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- ID: 2 |
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- Name: Pawel Lichatschow |
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- Department: Repair |
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[Worker] |
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- ID: 5 |
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- Name: Srinivan Taraman |
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- Department: IT |
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- Hourly Pay: 55.35 |
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</pre> |
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=={{header|Common Lisp}}== |
=={{header|Common Lisp}}== |
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