IsNullCondition (arcadedb-engine 24.5.1 API)

java.lang.Object
- com.arcadedb.query.sql.parser.SimpleNode
- - com.arcadedb.query.sql.parser.BooleanExpression
  - - com.arcadedb.query.sql.parser.IsNullCondition

All Implemented Interfaces:: Node

public class IsNullCondition
extends BooleanExpression

Field Summary

Fields
Modifier and Type Field Description

protected Expression expression
- Fields inherited from class com.arcadedb.query.sql.parser.BooleanExpression
  FALSE, TRUE
- Fields inherited from class com.arcadedb.query.sql.parser.SimpleNode
  cachedStringForm, children, value

Constructor Summary

Constructors
Constructor Description

IsNullCondition(int id)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IsNullCondition`	`copy()`
`Boolean`	`evaluate(Identifiable currentRecord, CommandContext context)`
`Boolean`	`evaluate(Result currentRecord, CommandContext context)`
`void`	`extractSubQueries(SubQueryCollector collector)`
`protected SimpleNode[]`	`getCacheableElements()`
`Expression`	`getExpression()`
`protected Object[]`	`getIdentityElements()`
`List<String>`	`getMatchPatternInvolvedAliases()`
`void`	`setExpression(Expression expression)`
`void`	`toString(Map<String,Object> params, StringBuilder builder)`

Methods inherited from class com.arcadedb.query.sql.parser.BooleanExpression
createRangeWith, encapsulateInAndBlock, flatten, getIndexedFunctionConditions, isAlwaysTrue, isEmpty, isIndexAware, resolveKeyFrom, resolveKeyTo, transformToUpdateItem

Methods inherited from class com.arcadedb.query.sql.parser.SimpleNode
equals, getValue, hashCode, isCacheable, jjtAddChild, jjtClose, jjtGetChild, jjtGetFirstToken, jjtGetLastToken, jjtGetNumChildren, jjtGetParent, jjtGetValue, jjtOpen, jjtSetFirstToken, jjtSetLastToken, jjtSetParent, jjtSetValue, refersToParent, toString, toString

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

Field Detail
- expression
```
protected Expression expression
```

Constructor Detail
- IsNullCondition
```
public IsNullCondition(int id)
```

Method Detail

evaluate

public Boolean evaluate(Identifiable currentRecord,
                        CommandContext context)

Specified by:: evaluate in class BooleanExpression

evaluate

public Boolean evaluate(Result currentRecord,
                        CommandContext context)

Specified by:: evaluate in class BooleanExpression

getExpression
```
public Expression getExpression()
```

setExpression

public void setExpression(Expression expression)

toString

public void toString(Map<String,Object> params,
                     StringBuilder builder)

Overrides:: toString in class SimpleNode

copy
```
public IsNullCondition copy()
```
Specified by:

copy in class BooleanExpression

extractSubQueries
```
public void extractSubQueries(SubQueryCollector collector)
```
Specified by:

extractSubQueries in class BooleanExpression

getIdentityElements
```
protected Object[] getIdentityElements()
```
Overrides:

getIdentityElements in class SimpleNode

getMatchPatternInvolvedAliases
```
public List<String> getMatchPatternInvolvedAliases()
```
Specified by:

getMatchPatternInvolvedAliases in class BooleanExpression

getCacheableElements
```
protected SimpleNode[] getCacheableElements()
```
Overrides:

getCacheableElements in class SimpleNode