java.lang.Object
- com.ibm.fhir.database.utils.query.expression.ExpressionSupport

```
public class ExpressionSupport
extends Object
```
Collection of utility functions for building predicate expressions. Consumers should static import the functions they require for cleaner syntax.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static ExpNode`	`acos(ExpNode arg)`	Factory function to create a ACosExpNode with the given value
`static Alias`	`alias(String aliasStr)`	Factory function for creating an `Alias` from a string
`static BindMarkerNode`	`bind(Double value)`	Factory function to create a BindMarkerNode with the given value
`static BindMarkerNode`	`bind(Integer value)`	Factory function to create a BindMarkerNode with the given value
`static BindMarkerNode`	`bind(Long value)`	Factory function to create a BindMarkerNode with the given value
`static BindMarkerNode`	`bind(String value)`	Factory function for creating a BindMarkerNode instance
`static BindMarkerNode`	`bind(BigDecimal value)`	Factory function to create a BindMarkerNode with the given value
`static BindMarkerNode`	`bind(Instant value)`	Factory function to create a BindMarkerNode with the given value
`static ColumnRef`	`col(String ref)`	Factory function for creating a `ColumnRef` instance from a string
`static ColumnRef`	`col(String alias, String name)`
`static ExpNode`	`cos(ExpNode arg)`	Factory function to create a CosExpNode with the given value
`static ExpNode`	`isDeleted(String alias)`	Factory function to create the expression {alias}.IS_DELETED = 'N'
`static WhereFragment`	`on(String col)`	Creates a `WhereFragment` starting with a simple column reference for use in a join clause
`static WhereFragment`	`on(String tableAlias, String col)`	Creates a `WhereFragment` starting with a qualified column reference for use in a join clause
`static ExpNode`	`sin(ExpNode arg)`	Factory function to create a SinExpNode with the given value
`static LiteralString`	`string(String value)`	Simple container for a string value to make overloading of methods more natural

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

- Method Detail
  - on
```
public static WhereFragment on(String col)
```
    Creates a WhereFragment starting with a simple column reference for use in a join clause
    
    Parameters:
    
    col -
    
    Returns:
  - on
```
public static WhereFragment on(String tableAlias,
                               String col)
```
    Creates a WhereFragment starting with a qualified column reference for use in a join clause
    
    Parameters:
    
    tableAlias -
    
    col -
    
    Returns:
  - alias
```
public static Alias alias(String aliasStr)
```
    Factory function for creating an Alias from a string
    
    Parameters:
    
    aliasStr -
    
    Returns:
  - col
```
public static ColumnRef col(String ref)
```
    Factory function for creating a ColumnRef instance from a string
    
    Parameters:
    
    ref -
    
    Returns:
  - col
```
public static ColumnRef col(String alias,
                            String name)
```
  - string
```
public static LiteralString string(String value)
```
    Simple container for a string value to make overloading of methods more natural
    
    Parameters:
    
    value -
    
    Returns:
  - bind
```
public static BindMarkerNode bind(String value)
```
    Factory function for creating a BindMarkerNode instance
    
    Returns:
  - bind
```
public static BindMarkerNode bind(Long value)
```
    Factory function to create a BindMarkerNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - bind
```
public static BindMarkerNode bind(Integer value)
```
    Factory function to create a BindMarkerNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - bind
```
public static BindMarkerNode bind(Double value)
```
    Factory function to create a BindMarkerNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - bind
```
public static BindMarkerNode bind(Instant value)
```
    Factory function to create a BindMarkerNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - bind
```
public static BindMarkerNode bind(BigDecimal value)
```
    Factory function to create a BindMarkerNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - sin
```
public static ExpNode sin(ExpNode arg)
```
    Factory function to create a SinExpNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - cos
```
public static ExpNode cos(ExpNode arg)
```
    Factory function to create a CosExpNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - acos
```
public static ExpNode acos(ExpNode arg)
```
    Factory function to create a ACosExpNode with the given value
    
    Parameters:
    
    value -
    
    Returns:
  - isDeleted
```
public static ExpNode isDeleted(String alias)
```
    Factory function to create the expression {alias}.IS_DELETED = 'N'
    
    Parameters:
    
    value -
    
    Returns:

Class ExpressionSupport

Method Summary

Methods inherited from class java.lang.Object

Method Detail

on

on

alias

col

col

string

bind

bind

bind

bind

bind

bind

sin

cos

acos

isDeleted