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Update README.md #34

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Nov 29, 2023
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Update README.md #34

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4 changes: 3 additions & 1 deletion README.md
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Expand Up @@ -32,6 +32,8 @@ For an equivalent of a (ANTLR) grammar definition look at `ExpressionGrammar`.
The public API of the library is encapsulated by `Expression` which refers to types
in the `org.hisp.dhis.lib.expression.spi` package.

For JavaScript the main entry point to the API is called `ExpressionJs`.

### Modes
DHIS2 has several expression language, each supporting a different set of functions.
To select which expression is used the `Expression` is parameterized with a `Mode`.
Expand All @@ -43,4 +45,4 @@ To select which expression is used the `Expression` is parameterized with a `Mod
* `INDICATOR_EXPRESSION`: Computes a number for an indicator expression (ad-hoc aggregate data computation)
* `PROGRAM_INDICATOR_EXPRESSION`: Computes a number for a program indicator expression (persisted aggregate data computation)
* `RULE_ENGINE_CONDITION`: Computes a boolean to check if a rule applies
* `RULE_ENGINE_ACTION`: Computes a boolean, string, number or date from a rule
* `RULE_ENGINE_ACTION`: Computes a boolean, string, number or date from a rule