DBFunctions.IsDBConnectionAvailableFunction

java.lang.Object
- com.inductiveautomation.ignition.common.expressions.functions.BaseFunction
- - com.inductiveautomation.ignition.common.expressions.functions.AbstractFunction
  - - com.inductiveautomation.ignition.common.expressions.legacy.DBFunctions.DBFunction
    - - com.inductiveautomation.ignition.common.expressions.legacy.DBFunctions.IsDBConnectionAvailableFunction

All Implemented Interfaces:: Function

Enclosing class:: DBFunctions

public class DBFunctions.IsDBConnectionAvailableFunction
extends DBFunctions.DBFunction

Constructor Summary

Constructors
Constructor Description

IsDBConnectionAvailableFunction()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`QualifiedValue`	`execute(Expression[] args)`	Execute this function, and return the function's qualified value.
`java.lang.String`	`getArgDocString()`	Returns a string to be used in the auto-generated function documentation.
`java.lang.String`	`getFunctionDisplayName()`
`java.lang.Class<?>`	`getType()`	Returns the type that this function will return upon execution
`protected boolean`	`validateNumArgs(int num)`

Methods inherited from class com.inductiveautomation.ignition.common.expressions.functions.AbstractFunction
executeArg, initArgs, log

Methods inherited from class com.inductiveautomation.ignition.common.expressions.functions.BaseFunction
connect, copy, disconnect, executeAll, shutdown, startup

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

- Constructor Detail
  - IsDBConnectionAvailableFunction
```
public IsDBConnectionAvailableFunction()
```
- Method Detail
  - execute
```
public QualifiedValue execute(Expression[] args)
                       throws ExpressionException
```
    Description copied from interface: Function
    
    Execute this function, and return the function's qualified value.
    
    Throws:
    
    ExpressionException
  - validateNumArgs
```
protected boolean validateNumArgs(int num)
```
    Overrides:
    
    validateNumArgs in class AbstractFunction
  - getType
```
public java.lang.Class<?> getType()
```
    Description copied from interface: Function
    
    Returns the type that this function will return upon execution
  - getArgDocString
```
public java.lang.String getArgDocString()
```
    Description copied from interface: Function
    
    Returns a string to be used in the auto-generated function documentation. The string should represent the arguments for the function, such as "string, count" for the "repeat" function.
  - getFunctionDisplayName
```
public java.lang.String getFunctionDisplayName()
```
    Specified by:
    
    getFunctionDisplayName in class DBFunctions.DBFunction