Difference between revisions of "REST API:exec Resource"

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imported>Aeric
imported>Aeric
 
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:* A [[Class]] must be defined. (The <tt>exec</tt> resource invokes a method in the class.)
:* A [[Class]] must be defined. (The <tt>exec</tt> resource invokes a method in the class.)
:* An instance of the class is created automatically, so the method need not be <tt>static</tt>.
:* An instance of the class is created automatically, so the method need not be <tt>static</tt>.
:* Whether passed in XML or JSON, parameters passed to the method in the <tt><execClass></tt> segment must consist of a flat structure, as in the example that follows. (The structure is converted to a HashMap, so it cannot contain any complex elements or attributes.)


:* Signatures:
:* Signatures:
:** The method must be <tt>public</tt>
:** The method must be <tt>public</tt>
:** The method can either take no arguments: <tt>public methodName()</tt>
:** The method can take no arguments: <tt>public methodName()</tt>
:** Or it take arguments passed in a Map: <tt>public methodName(Map params)</tt><br>(Parameters passed in the Request are wrapped in a Map, and passed to the method.)  
:** Or it take arguments passed in a Map: <tt>public methodName(Map params)</tt><br>(Parameters passed in the REST request shown below are wrapped in a Map, and passed to the method.)  


:* Return Types:
:* Return Types:
:** A method may return void.
:** A method may return void.
:** If the return type is a Map, it can be used to return key-value pairs.  
:** If the return type is a Map, it can be used to return multiple key-value pairs.  
:** Otherwise the return value is automatically converted to a string using <tt>result.toString()</tt>
:** Any other return is automatically converted to a String, using <tt>Object.toString()</tt>. The string value is returned with key = <tt>result</tt>.


;Method:POST
;Method:POST
Line 25: Line 26:
<platform>
<platform>
     <execClass>
     <execClass>
         <clazz>fully.qualified.JavaClassName</clazz>
         <clazz>com.platform.yourCompany.yourApplication</clazz>
         <method>methodName</method>
         <method>methodName</method>
         ...optional list of parameter tags, like these:...
         ...optional list of additional parameters like these...
         <firstName>Peter</firstName>
         <firstName>Peter</firstName>
         <lastName>Smith</lastname>
         <lastName>Smith</lastname>
Line 33: Line 34:
</platform>
</platform>
</syntaxhighlight>
</syntaxhighlight>
 
:(Note that the items in the <tt><execClass></tt> tag form a flat structure.)
   
   
;Response:
;Response:
:The output structure is the same, except that the key/value pairs are those returned by the class method, when the return value is a Map. When the return value is converted to a string, the response looks like this:
:For a method that returns a Map, the returned structure looks like this:
:<syntaxhighlight lang="xml" enclose="div">
:<syntaxhighlight lang="xml" enclose="div">
<platform>
<platform>
     <execClass>
     <execClass>
         <result>...result-string here...</result>
         <clazz>com.platform.yourCompany.yourApplication</clazz>
        <method>methodName</method>
        <key1>value1</key1>
        <key2>value2</key2>
        ...
     </execClass>
     </execClass>
     <message>
     <message>
Line 48: Line 53:
</platform>
</platform>
</syntaxhighlight>
</syntaxhighlight>
:For a method that returns anything else, the returned structure looks like this:
:<syntaxhighlight lang="xml" enclose="div">
<platform>
    <execClass>
        <clazz>com.platform.yourCompany.yourApplication</clazz>
        <method>methodName</method>
        <result>...value returned from the method...</result>
    </execClass>
    <message>
        <code>0</code>
        <description>Success</description>
    </message>
</platform>
</syntaxhighlight>
:In either case, a JSON response will have the same structure, but in {{^JSON}} format.


;Known issue: Null return values are not handled at this time.
;Known issue: Null return values are not handled at this time.

Latest revision as of 23:38, 13 March 2014


Provides the ability to execute a class method using the REST API.

Considerations
  • A Class must be defined. (The exec resource invokes a method in the class.)
  • An instance of the class is created automatically, so the method need not be static.
  • Whether passed in XML or JSON, parameters passed to the method in the <execClass> segment must consist of a flat structure, as in the example that follows. (The structure is converted to a HashMap, so it cannot contain any complex elements or attributes.)
  • Signatures:
    • The method must be public
    • The method can take no arguments: public methodName()
    • Or it take arguments passed in a Map: public methodName(Map params)
      (Parameters passed in the REST request shown below are wrapped in a Map, and passed to the method.)
  • Return Types:
    • A method may return void.
    • If the return type is a Map, it can be used to return multiple key-value pairs.
    • Any other return is automatically converted to a String, using Object.toString(). The string value is returned with key = result.
Method
POST
URI
https://{yourDomain}/networking/rest/class/operation/exec
Request
<syntaxhighlight lang="xml" enclose="div">

<platform>

   <execClass>
       <clazz>com.platform.yourCompany.yourApplication</clazz>
       <method>methodName</method>
       ...optional list of additional parameters like these...
       <firstName>Peter</firstName>
       <lastName>Smith</lastname>
   </execClass>

</platform> </syntaxhighlight>

(Note that the items in the <execClass> tag form a flat structure.)
Response
For a method that returns a Map, the returned structure looks like this:
<syntaxhighlight lang="xml" enclose="div">

<platform>

   <execClass>
       <clazz>com.platform.yourCompany.yourApplication</clazz>
       <method>methodName</method>
       <key1>value1</key1>
       <key2>value2</key2>
        ...
   </execClass>
   <message>
       0
       <description>Success</description>
   </message>

</platform> </syntaxhighlight>

For a method that returns anything else, the returned structure looks like this:
<syntaxhighlight lang="xml" enclose="div">

<platform>

   <execClass>
       <clazz>com.platform.yourCompany.yourApplication</clazz>
       <method>methodName</method>
       <result>...value returned from the method...</result>
   </execClass>
   <message>
       0
       <description>Success</description>
   </message>

</platform> </syntaxhighlight>

In either case, a JSON response will have the same structure, but in JSON format.
Known issue
Null return values are not handled at this time.