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Is it possible to dynamically set properties of an `Object` using Apex?

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1

Background

I would like to be able to dynamically set properties of an Object (not SObject).

Given this class:

public class Invoice 
 public String Ref get; set; 

I would like to be able to do this:

Invoice inv = new Invoice();
inv.put('Ref', 'REF123');

But when I do Execute Anonymous Apex with above code, I this error:

ERROR: Compilation failed.

! ERROR: Line: 3, Column: 12

! Method does not exist or incorrect signature: void put(String, String)

! from the type Invoice

ERROR: Execution failed.

Question

1. Is it possible to dynamically set properties of an Object (not SObject) using Apex?


2. How would I dynamically set a property of an Object using Apex?

apex object dynamic-apex

share|improve this question

edited 40 mins ago

Robs

asked 1 hour ago

RobsRobs

2,554743

add a comment | 

1

Background

I would like to be able to dynamically set properties of an Object (not SObject).

Given this class:

public class Invoice 
 public String Ref get; set; 

I would like to be able to do this:

Invoice inv = new Invoice();
inv.put('Ref', 'REF123');

But when I do Execute Anonymous Apex with above code, I this error:

ERROR: Compilation failed.

! ERROR: Line: 3, Column: 12

! Method does not exist or incorrect signature: void put(String, String)

! from the type Invoice

ERROR: Execution failed.

Question

1. Is it possible to dynamically set properties of an Object (not SObject) using Apex?


2. How would I dynamically set a property of an Object using Apex?

apex object dynamic-apex

share|improve this question

edited 40 mins ago

Robs

asked 1 hour ago

RobsRobs

2,554743

add a comment | 

Background

I would like to be able to dynamically set properties of an Object (not SObject).

Given this class:

public class Invoice 
 public String Ref get; set; 

I would like to be able to do this:

Invoice inv = new Invoice();
inv.put('Ref', 'REF123');

But when I do Execute Anonymous Apex with above code, I this error:

ERROR: Compilation failed.

! ERROR: Line: 3, Column: 12

! Method does not exist or incorrect signature: void put(String, String)

! from the type Invoice

ERROR: Execution failed.

Question

1. Is it possible to dynamically set properties of an Object (not SObject) using Apex?


2. How would I dynamically set a property of an Object using Apex?

apex object dynamic-apex

share|improve this question

edited 40 mins ago

Robs

asked 1 hour ago

RobsRobs

2,554743

public class Invoice 
 public String Ref get; set; 

Invoice inv = new Invoice();
inv.put('Ref', 'REF123');

share|improve this question

edited 40 mins ago

Robs

asked 1 hour ago

RobsRobs

2,554743

share|improve this question

edited 40 mins ago

Robs

asked 1 hour ago

RobsRobs

2,554743

asked 1 hour ago

RobsRobs

2,554743

asked 1 hour ago

RobsRobs

2,554743

1 Answer
1

active

oldest

votes

2

For some isolated cases - yours is one of them - there is this (ab)use of the serialize methods:

Invoice inv = (Invoice) JSON.deserialize(JSON.serialize(new Map<<String, Object>
 'Ref' => 'REF123'
)), Invoice.class);

Here, the capability of JSON.deserialize to create an instance of the specified type and set the properties of the instance is being used.

But in general, Apex is missing the map-like behavior for objects or a reflection API.

share|improve this answer

answered 47 mins ago

Keith CKeith C

97.4k1197220

add a comment | 

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2

For some isolated cases - yours is one of them - there is this (ab)use of the serialize methods:

Invoice inv = (Invoice) JSON.deserialize(JSON.serialize(new Map<<String, Object>
 'Ref' => 'REF123'
)), Invoice.class);

Here, the capability of JSON.deserialize to create an instance of the specified type and set the properties of the instance is being used.

But in general, Apex is missing the map-like behavior for objects or a reflection API.

share|improve this answer

answered 47 mins ago

Keith CKeith C

97.4k1197220

add a comment | 

2

For some isolated cases - yours is one of them - there is this (ab)use of the serialize methods:

Invoice inv = (Invoice) JSON.deserialize(JSON.serialize(new Map<<String, Object>
 'Ref' => 'REF123'
)), Invoice.class);

Here, the capability of JSON.deserialize to create an instance of the specified type and set the properties of the instance is being used.

But in general, Apex is missing the map-like behavior for objects or a reflection API.

share|improve this answer

answered 47 mins ago

Keith CKeith C

97.4k1197220

add a comment | 

For some isolated cases - yours is one of them - there is this (ab)use of the serialize methods:

Invoice inv = (Invoice) JSON.deserialize(JSON.serialize(new Map<<String, Object>
 'Ref' => 'REF123'
)), Invoice.class);

Here, the capability of JSON.deserialize to create an instance of the specified type and set the properties of the instance is being used.

But in general, Apex is missing the map-like behavior for objects or a reflection API.

share|improve this answer

answered 47 mins ago

Keith CKeith C

97.4k1197220

Invoice inv = (Invoice) JSON.deserialize(JSON.serialize(new Map<<String, Object>
 'Ref' => 'REF123'
)), Invoice.class);

share|improve this answer

answered 47 mins ago

Keith CKeith C

97.4k1197220

answered 47 mins ago

Keith CKeith C

97.4k1197220

answered 47 mins ago

Keith CKeith C

97.4k1197220