Package com.inductiveautomation.ignition.common.expressions.legacy

Class 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

Modifier and Type	Method	Description
protected void	addDBFunctions(DBExpressionFunctionProvider dbProv)
protected void	addFSQLDateFunctions()
Function	getFunction(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 Details

TagFunctionFactory

public TagFunctionFactory(FunctionFactory funcFactory,
 DBExpressionFunctionProvider dbProv)

Method Details

getFunction

public Function getFunction(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)