InternalFunctionFactory.TimeStampObFunction

java.lang.Object
- com.mckoi.database.AbstractFunction
- - com.mckoi.database.InternalFunctionFactory.TimeStampObFunction

All Implemented Interfaces:: Function

Enclosing class:: InternalFunctionFactory

static class InternalFunctionFactory.TimeStampObFunction
extends AbstractFunction

Field Summary

Fields
Modifier and Type Field Description

private static TType TIMESTAMP_TYPE

Constructor Summary

Constructors
Constructor Description

TimeStampObFunction(Expression[] params)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`TObject`	`evaluate(GroupResolver group, VariableResolver resolver, QueryContext context)`	Evaluates the function and returns a TObject that represents the result of the function.
`TType`	`returnTType(VariableResolver resolver, QueryContext context)`	By Default, we assume a function returns a Numeric object.

Methods inherited from class com.mckoi.database.AbstractFunction
allElements, allVariables, getName, getParameter, init, isAggregate, isGlob, parameterCount, prepareParameters, returnTType, setAggregate, toString

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

- Field Detail
  - TIMESTAMP_TYPE
```
private static final TType TIMESTAMP_TYPE
```
- Constructor Detail
  - TimeStampObFunction
```
public TimeStampObFunction(Expression[] params)
```
- Method Detail
  - evaluate
```
public TObject evaluate(GroupResolver group,
                        VariableResolver resolver,
                        QueryContext context)
```
    Description copied from interface: Function
    
    Evaluates the function and returns a TObject that represents the result of the function. The VariableResolver object should be used to look up variables in the parameter of the function. The 'FunctionTable' object should only be used when the function is a grouping function. For example, 'avg(value_of)'.
  - returnTType
```
public TType returnTType(VariableResolver resolver,
                         QueryContext context)
```
    Description copied from class: AbstractFunction
    
    By Default, we assume a function returns a Numeric object.
    
    Specified by:
    
    returnTType in interface Function
    
    Overrides:
    
    returnTType in class AbstractFunction