com.inductiveautomation.ignition.common.expressions

Class DefaultFunctionFactory.CoalesceFunction

java.lang.Object

com.inductiveautomation.ignition.common.expressions.functions.BaseFunction

com.inductiveautomation.ignition.common.expressions.functions.AbstractFunction

com.inductiveautomation.ignition.common.expressions.DefaultFunctionFactory.CoalesceFunction

All Implemented Interfaces:

Function

Enclosing class:

DefaultFunctionFactory

public static class DefaultFunctionFactory.CoalesceFunction
extends AbstractFunction

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	FUNC_NAME

Constructor Summary

Constructors

Constructor and Description
CoalesceFunction()

Method Summary

Modifier and Type	Method and 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.
protected java.lang.String	getFunctionDisplayName()
java.lang.Class<?>	getType() Returns the type of Object that this function will generate with execute
void	setType(java.lang.Class<?> type)
protected boolean	validateArgType(int argNum, java.lang.Class<?> type)

Methods inherited from class com.inductiveautomation.ignition.common.expressions.functions.AbstractFunction

initArgs, validateNumArgs

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

Field Detail

FUNC_NAME

public static final java.lang.String FUNC_NAME

See Also:

Constant Field Values

Constructor Detail

CoalesceFunction

public CoalesceFunction()

Method Detail

getFunctionDisplayName

protected java.lang.String getFunctionDisplayName()

Specified by:

getFunctionDisplayName in class AbstractFunction

execute

public QualifiedValue execute(Expression[] args)
                       throws ExpressionException

Description copied from interface: Function

Execute this function, and return the function's qualified value.

Returns:

Throws:

ExpressionException

validateArgType

protected boolean validateArgType(int argNum,
                                  java.lang.Class<?> type)

Overrides:

validateArgType in class AbstractFunction

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.

Returns:

getType

public java.lang.Class<?> getType()

Description copied from interface: Function

Returns the type of Object that this function will generate with execute

Returns:

setType

public void setType(java.lang.Class<?> type)