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AI-generated Key Takeaways
The Container.FunctionCallMacroHandler interface allows applications to define custom macros within Google Tag Manager.
Implementations of this interface must provide a getValue method, which calculates and returns the macro's value based on its name and parameters.
The getValue method receives the macro name and a map of parameters, supporting various data types like String, Double, Boolean, Map, and List.
The returned value from the getValue method can be a String, Boolean, Integer, Long, or Double, representing the calculated result of the custom macro.
public static interface
Container.FunctionCallMacroHandler
Handler that is provided by the application to calculate the value of a custom macro.
public
abstract
Object
getValue(String macroName, Map<String, Object> parameters)
Handler is given the macro name and a map of named parameters (the map may contain String,
Double, Boolean, Map, or List values). It should return an
object which is the calculated value of the macro.
The macroName is the same name by which the handler was registered. It's provided
as a convenience to allow a single handler to be registered for multiple function call
macros.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-10-09 UTC."],[],["The `Container.FunctionCallMacroHandler` interface allows applications to define custom macro logic. Its core action is the `getValue` method, which receives a `macroName` and a `parameters` map. The handler uses these inputs to calculate the macro's value. This method returns the calculated value as a String, Boolean, Integer, Long, or Double. The `macroName` facilitates the use of a single handler for multiple macros.\n"]]
