There's no direct SOQL query to retrieve Custom Labels based on their value. SOQL operates on Salesforce objects, and Custom Labels are not a standard object. They are stored differently within the Salesforce metadata.
However, you can achieve this using the Metadata API. The Metadata API allows programmatic access to Salesforce metadata, including Custom Labels. You would need to write code (Apex, Python, etc.) to query the Custom Labels and filter based on the value.
Here's how you could approach this using Apex:
// Apex code to retrieve Custom Labels based on value
public class GetCustomLabelsByValue {
public static List<CustomLabel> getLabelsByValue(String value) {
List<CustomLabel> labels = new List<CustomLabel>();
List<CustomLabel> allLabels = [SELECT Label, Value FROM CustomLabel]; // Query all custom labels
for (CustomLabel label : allLabels) {
if (label.Value == value) {
labels.add(label);
}
}
return labels;
}
// Example usage:
public static void example() {
String searchValue = 'My Custom Value'; // Replace with the value you are searching for
List<CustomLabel> matchingLabels = getLabelsByValue(searchValue);
if (matchingLabels.isEmpty()){
System.debug('No custom labels found with value: ' + searchValue);
} else {
for (CustomLabel label : matchingLabels){
System.debug('Label: ' + label.Label + ', Value: ' + label.Value);
}
}
}
}
Explanation:
getLabelsByValue(String value)
method: This method takes the desired value as input.[SELECT Label, Value FROM CustomLabel]
: This SOQL query retrieves all custom labels and their values. This is a workaround. It's important to understand that the actual storage is not a standard object, but the Metadata API provides this view.- Loop and Comparison: The code iterates through the retrieved custom labels. If a label's
Value
matches the inputvalue
, it is added to thelabels
list. - Return Value: The method returns a list of
CustomLabel
objects that match the specified value. example()
method: This demonstrates how to callgetLabelsByValue
and handle the results.
Important Considerations:
- Metadata API: This solution relies on the Metadata API, which requires more setup than a standard SOQL query. You need to enable the API and handle authentication appropriately in your chosen programming language.
- Performance: Querying all Custom Labels might be inefficient if you have a large number of them. Consider optimizing this if performance becomes an issue (e.g., using more targeted queries if possible through other metadata access).
- Error Handling: The provided code lacks robust error handling. Production code should include proper error handling to gracefully manage potential issues.
- Alternatives (if possible): If you have control over how your custom labels are used, consider structuring your application in a way that avoids needing to search labels based purely on value. For instance, using a custom object to manage configurations might be a better design choice.
This Apex code provides a functional approach to finding custom labels based on their values. Remember to adapt and extend this code to fit your specific needs and coding environment. Consult the Salesforce documentation for more information on the Metadata API and Apex coding best practices.