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

All Implemented Interfaces:

ExpNodeVisitor<String>

Direct Known Subclasses:

DebugExpNodeVisitor
```
public class StringExpNodeVisitor
extends Object
implements ExpNodeVisitor<String>
```
Renders the expression node tree into a string

Field Summary

Fields
Modifier and Type Field Description

static String NEWLINE

Constructor Summary

Constructors
Constructor	Description
`StringExpNodeVisitor()`	Simple rendering of the expression tree to a string, ignoring the bind marker values
`StringExpNodeVisitor(boolean pretty)`	For rendering the expression tree to a string with additional formatting to improve readability.
`StringExpNodeVisitor(IDatabaseTranslator translator, List<BindMarkerNode> collectBindMarkersInto, boolean pretty)`	Collect the bind marker values into the given list

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`acos(String arg)`	SQL ACOS function
`String`	`add(String left, String right)`
`String`	`and(String left, String right)`
`String`	`between(String leftValue, String rightValue)`
`String`	`bindMarker(Double value)`
`String`	`bindMarker(Integer value)`
`String`	`bindMarker(Long value)`
`String`	`bindMarker(String value)`
`String`	`bindMarker(BigDecimal value)`
`String`	`bindMarker(Instant value)`
`String`	`coalesce(List<ColumnRef> columnRefs)`	Render a COALESCE(...) function
`String`	`column(String tableAlias, String columnName)`
`String`	`cos(String arg)`	SQL COS function
`String`	`divide(String left, String right)`
`String`	`eq(String left, String right)`
`String`	`escape(String left, String right)`
`String`	`exists(String selectString)`
`String`	`gt(String left, String right)`
`String`	`gte(String left, String right)`
`String`	`in(String left, List<String> args)`
`String`	`isNotNull(String expr)`
`String`	`isNull(String expr)`
`String`	`like(String left, String right)`
`String`	`literal(Double value)`
`String`	`literal(Long value)`
`String`	`literal(String value)`
`String`	`lt(String left, String right)`
`String`	`lte(String left, String right)`
`String`	`multiply(String left, String right)`
`String`	`neq(String left, String right)`
`String`	`not(String exp)`
`String`	`notExists(String selectString)`
`String`	`or(String left, String right)`
`String`	`paren(String expr)`
`String`	`select(Select select)`	Process a sub-select statement
`String`	`sin(String arg)`	SQL SIN function
`static String`	`stringify(ExpNode exp)`	Helper to render an expression as a string using this class as a visitor
`String`	`subtract(String left, String right)`

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

- Field Detail
  - NEWLINE
```
public static final String NEWLINE
```
- Constructor Detail
  - StringExpNodeVisitor
```
public StringExpNodeVisitor()
```
    Simple rendering of the expression tree to a string, ignoring the bind marker values
  - StringExpNodeVisitor
```
public StringExpNodeVisitor(boolean pretty)
```
    For rendering the expression tree to a string with additional formatting to improve readability.
    
    Parameters:
    
    pretty -
  - StringExpNodeVisitor
```
public StringExpNodeVisitor(IDatabaseTranslator translator,
                            List<BindMarkerNode> collectBindMarkersInto,
                            boolean pretty)
```
    Collect the bind marker values into the given list
    
    Parameters:
    
    translator -
    
    collectBindMarkersInto -
- Method Detail
  - stringify
```
public static String stringify(ExpNode exp)
```
    Helper to render an expression as a string using this class as a visitor
    
    Parameters:
    
    exp -
    
    Returns:
  - paren
```
public String paren(String expr)
```
    Specified by:
    
    paren in interface ExpNodeVisitor<String>
  - and
```
public String and(String left,
                  String right)
```
    Specified by:
    
    and in interface ExpNodeVisitor<String>
  - or
```
public String or(String left,
                 String right)
```
    Specified by:
    
    or in interface ExpNodeVisitor<String>
  - not
```
public String not(String exp)
```
    Specified by:
    
    not in interface ExpNodeVisitor<String>
  - exists
```
public String exists(String selectString)
```
    Specified by:
    
    exists in interface ExpNodeVisitor<String>
  - notExists
```
public String notExists(String selectString)
```
    Specified by:
    
    notExists in interface ExpNodeVisitor<String>
  - eq
```
public String eq(String left,
                 String right)
```
    Specified by:
    
    eq in interface ExpNodeVisitor<String>
  - neq
```
public String neq(String left,
                  String right)
```
    Specified by:
    
    neq in interface ExpNodeVisitor<String>
  - gt
```
public String gt(String left,
                 String right)
```
    Specified by:
    
    gt in interface ExpNodeVisitor<String>
  - gte
```
public String gte(String left,
                  String right)
```
    Specified by:
    
    gte in interface ExpNodeVisitor<String>
  - lt
```
public String lt(String left,
                 String right)
```
    Specified by:
    
    lt in interface ExpNodeVisitor<String>
  - lte
```
public String lte(String left,
                  String right)
```
    Specified by:
    
    lte in interface ExpNodeVisitor<String>
  - literal
```
public String literal(String value)
```
    Specified by:
    
    literal in interface ExpNodeVisitor<String>
  - literal
```
public String literal(Long value)
```
    Specified by:
    
    literal in interface ExpNodeVisitor<String>
  - literal
```
public String literal(Double value)
```
    Specified by:
    
    literal in interface ExpNodeVisitor<String>
  - add
```
public String add(String left,
                  String right)
```
    Specified by:
    
    add in interface ExpNodeVisitor<String>
  - subtract
```
public String subtract(String left,
                       String right)
```
    Specified by:
    
    subtract in interface ExpNodeVisitor<String>
  - multiply
```
public String multiply(String left,
                       String right)
```
    Specified by:
    
    multiply in interface ExpNodeVisitor<String>
  - divide
```
public String divide(String left,
                     String right)
```
    Specified by:
    
    divide in interface ExpNodeVisitor<String>
  - isNull
```
public String isNull(String expr)
```
    Specified by:
    
    isNull in interface ExpNodeVisitor<String>
  - isNotNull
```
public String isNotNull(String expr)
```
    Specified by:
    
    isNotNull in interface ExpNodeVisitor<String>
  - between
```
public String between(String leftValue,
                      String rightValue)
```
    Specified by:
    
    between in interface ExpNodeVisitor<String>
  - column
```
public String column(String tableAlias,
                     String columnName)
```
    Specified by:
    
    column in interface ExpNodeVisitor<String>
  - bindMarker
```
public String bindMarker(Double value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - bindMarker
```
public String bindMarker(Long value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - bindMarker
```
public String bindMarker(String value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - bindMarker
```
public String bindMarker(Instant value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - bindMarker
```
public String bindMarker(Integer value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - in
```
public String in(String left,
                 List<String> args)
```
    Specified by:
    
    in in interface ExpNodeVisitor<String>
  - like
```
public String like(String left,
                   String right)
```
    Specified by:
    
    like in interface ExpNodeVisitor<String>
  - escape
```
public String escape(String left,
                     String right)
```
    Specified by:
    
    escape in interface ExpNodeVisitor<String>
  - select
```
public String select(Select select)
```
    Description copied from interface: ExpNodeVisitor
    
    Process a sub-select statement
    
    Specified by:
    
    select in interface ExpNodeVisitor<String>
    
    Returns:
  - coalesce
```
public String coalesce(List<ColumnRef> columnRefs)
```
    Description copied from interface: ExpNodeVisitor
    
    Render a COALESCE(...) function
    
    Specified by:
    
    coalesce in interface ExpNodeVisitor<String>
    
    Returns:
  - bindMarker
```
public String bindMarker(BigDecimal value)
```
    Specified by:
    
    bindMarker in interface ExpNodeVisitor<String>
  - cos
```
public String cos(String arg)
```
    Description copied from interface: ExpNodeVisitor
    
    SQL COS function
    
    Specified by:
    
    cos in interface ExpNodeVisitor<String>
    
    Returns:
  - acos
```
public String acos(String arg)
```
    Description copied from interface: ExpNodeVisitor
    
    SQL ACOS function
    
    Specified by:
    
    acos in interface ExpNodeVisitor<String>
    
    Returns:
  - sin
```
public String sin(String arg)
```
    Description copied from interface: ExpNodeVisitor
    
    SQL SIN function
    
    Specified by:
    
    sin in interface ExpNodeVisitor<String>
    
    Returns:

Class StringExpNodeVisitor

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NEWLINE

Constructor Detail

StringExpNodeVisitor

StringExpNodeVisitor

StringExpNodeVisitor

Method Detail

stringify

paren

and

or

not

exists

notExists

eq

neq

gt

gte

lt

lte

literal

literal

literal

add

subtract

multiply

divide

isNull

isNotNull

between

column

bindMarker

bindMarker

bindMarker

bindMarker

bindMarker

in

like

escape

select

coalesce

bindMarker

cos

acos

sin