Difference between revisions of "METADATA VALUE()"
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| − | METADATA_VALUE() returns an empty string if <cAttribute> does not exist or if | + | For conditional metadata, METADATA_VALUE() returns the value for the current record |
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| + | METADATA_VALUE() returns an empty string if <cAttribute> does not exist or if there is no condition to match the current record. | ||
==Example== | ==Example== | ||
Revision as of 09:32, 10 April 2017
Contents
Purpose
Function to return the value of the specified METADATA attribute
Syntax
METADATA_VALUE(<cAttribute>, <cSource>)
See Also
ACLASS(), ADDPROPERTY(), ALTER TABLE, AMEMBERS(), COLUMNMETADATA(), COMPOBJ(), CREATE TABLE, CREATEOBJECT(), DATABASEMETADATA(), DEFINE CLASS, DISPLAY CLASSES, DODEFAULT(), FOREACH, JSON_DECODE(), JSON_DECODE_FILE(), JSON_ENCODE(), Lianja MetaData API, LIST CLASSES, LOADOBJECT(), METADATA_DECODE(), METADATA_ENCODE(), METADATA_FINDTYPE(), NEWOBJECT(), OBJECT(), PRINT_JSON(), PRINT_HTML(), PRINT_R(), PRINT_XML(), REMOVEPROPERTY(), REQUIRE_ONCE(), SAVEOBJECT(), SQL SELECT, TABLEMETADATA(), TABLEMETADATAVERSION()
Description
The METADATA_VALUE() function is used to return the value of the specified METADATA attribute <cAttribute> from the source <cSource> as a character string.
| Argument | Description |
|---|---|
| <cAttribute> | The attribute name as a character string. |
| <cSource> | The MetaData source character string. |
For conditional metadata, METADATA_VALUE() returns the value for the current record
METADATA_VALUE() returns an empty string if <cAttribute> does not exist or if there is no condition to match the current record.
Example
? databasemetadata("docdb") // purpose=documentation;createddate=20170227;createdversion=3.4;distribution=internal cCreatedVersion = metadata_value("createdversion",databasemetadata("docdb")) ? cCreatedVersion // 3.4
