TagFunctionFactory

java.lang.Object
- com.inductiveautomation.ignition.common.expressions.AbstractFunctionFactory
- - com.inductiveautomation.ignition.common.expressions.legacy.TagFunctionFactory

All Implemented Interfaces:

FunctionFactory
```
public class TagFunctionFactory
extends AbstractFunctionFactory
```
This function factory adds additional expression functions that are used by SQLTags, and not by bindings. There are several provisions for legacy features that existed in FactorySQL, but that we might not want new installs to use.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class TagFunctionFactory.DatacacheCountFunction

static class TagFunctionFactory.FSQLDateExtractFunction

Field Summary
- Fields inherited from class com.inductiveautomation.ignition.common.expressions.AbstractFunctionFactory
  categories, functions, parent

Constructor Summary

Constructors
Constructor Description

TagFunctionFactory(FunctionFactory funcFactory, DBExpressionFunctionProvider dbProv)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`addDBFunctions(DBExpressionFunctionProvider dbProv)`
`protected void`	`addFSQLDateFunctions()`
`Function`	`getFunction(java.lang.String name)`	Retrieves the function with the given name.

Methods inherited from class com.inductiveautomation.ignition.common.expressions.AbstractFunctionFactory
addFunction, addFunction, getCategories, getFunctionNames, getFunctionsInCategory

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TagFunctionFactory
```
public TagFunctionFactory(FunctionFactory funcFactory,
                          DBExpressionFunctionProvider dbProv)
```
- Method Detail
  - getFunction
```
public Function getFunction(java.lang.String name)
```
    Description copied from class: AbstractFunctionFactory
    
    Retrieves the function with the given name. Returns a copy of that function, so that each FunctionExpression can have its own version of the function. NB - some functions may opt to not create a true copy, it depends on the serialization requirements of the function.
    
    Specified by:
    
    getFunction in interface FunctionFactory
    
    Overrides:
    
    getFunction in class AbstractFunctionFactory
    
    Returns:
    
    The function, or null
  - addFSQLDateFunctions
```
protected void addFSQLDateFunctions()
```
  - addDBFunctions
```
protected void addDBFunctions(DBExpressionFunctionProvider dbProv)
```