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Java.GetObjectField

Queries a field on an object.

Component Version macOS Windows Linux Server iOS SDK
Java 6.5 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ❌ No
MBS( "Java.GetObjectField"; JObject; FieldName; Signature )   More

Parameters

Parameter Description Example
JObject The java object reference number. $j
FieldName The name of the field. "test"
Signature The java signature of the field.
This describes the data type of the field.
"I"

Result

Returns value or error.

Description

Queries a field on an object.
Data type is automatically detected by plugin from signature.
If you read an object value, please call Java.Release later for it.

Java is only available if you call Java.Initialize before to load the java runtime.
Supported data types include: void, int, long, boolean, string, double, float, char, byte, object, byte array (for container), char array (using FileMaker text).

For PDF content: If you have a DynaPDF Pro license and DynaPDF functions initialized, this function can add previews for the PDF file on Windows and Linux. For MacOS, we make them with PDFKit.

Examples

Test object field:

Set Variable [$j; Value:MBS( "Java.NewClassObject"; "test"; "<init>"; "()V")]
Set Variable [$r; Value:MBS( "Java.SetObjectField"; $j; "value"; "I"; 2345)]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "value"; "I")]
Show Custom Dialog ["value"; $r]
Set Variable [$r; Value:MBS( "Java.Release"; $j)]

Queries various fields:

Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_boolean"; "Z")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_byte"; "B")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_byteArray"; "[B")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_char"; "C")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_charArray"; "[C")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_double"; "D")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_float"; "F")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_int"; "I")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_long"; "J")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_short"; "S")]
Set Variable [$r; Value:MBS( "Java.GetObjectField"; $j; "property_string"; "Ljava/lang/String;")]

See also

Example Databases

This function checks for a license.

Created 2nd October 2016, last changed 9th November 2021


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