Package com.arcadedb.query.sql.parser
Class IsNullCondition
- java.lang.Object
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- com.arcadedb.query.sql.parser.SimpleNode
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- com.arcadedb.query.sql.parser.BooleanExpression
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- com.arcadedb.query.sql.parser.IsNullCondition
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- All Implemented Interfaces:
Node
public class IsNullCondition extends BooleanExpression
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Field Summary
Fields Modifier and Type Field Description protected Expression
expression
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Fields inherited from class com.arcadedb.query.sql.parser.BooleanExpression
FALSE, TRUE
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Fields inherited from class com.arcadedb.query.sql.parser.SimpleNode
children, firstToken, id, lastToken, parent, parser, value
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Constructor Summary
Constructors Constructor Description IsNullCondition(int id)
IsNullCondition(SqlParser p, int id)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description IsNullCondition
copy()
boolean
equals(Object o)
boolean
evaluate(Identifiable currentRecord, CommandContext ctx)
boolean
evaluate(Result currentRecord, CommandContext ctx)
void
extractSubQueries(SubQueryCollector collector)
Expression
getExpression()
protected List<Object>
getExternalCalculationConditions()
List<String>
getMatchPatternInvolvedAliases()
protected int
getNumberOfExternalCalculations()
int
hashCode()
boolean
isCacheable()
boolean
needsAliases(Set<String> aliases)
boolean
refersToParent()
void
setExpression(Expression expression)
boolean
supportsBasicCalculation()
void
toString(Map<String,Object> params, StringBuilder builder)
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Methods inherited from class com.arcadedb.query.sql.parser.BooleanExpression
deserialize, deserializeFromOResult, encapsulateInAndBlock, flatten, getIndexedFunctionConditions, isEmpty, serialize, transformToUpdateItem
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Methods inherited from class com.arcadedb.query.sql.parser.SimpleNode
childrenAccept, dump, getValue, jjtAccept, jjtAddChild, jjtClose, jjtGetChild, jjtGetFirstToken, jjtGetLastToken, jjtGetNumChildren, jjtGetParent, jjtGetValue, jjtOpen, jjtSetFirstToken, jjtSetLastToken, jjtSetParent, jjtSetValue, toString, toString
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Field Detail
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expression
protected Expression expression
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Constructor Detail
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IsNullCondition
public IsNullCondition(int id)
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IsNullCondition
public IsNullCondition(SqlParser p, int id)
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Method Detail
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evaluate
public boolean evaluate(Identifiable currentRecord, CommandContext ctx)
- Specified by:
evaluate
in classBooleanExpression
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evaluate
public boolean evaluate(Result currentRecord, CommandContext ctx)
- Specified by:
evaluate
in classBooleanExpression
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getExpression
public Expression getExpression()
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setExpression
public void setExpression(Expression expression)
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toString
public void toString(Map<String,Object> params, StringBuilder builder)
- Overrides:
toString
in classSimpleNode
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supportsBasicCalculation
public boolean supportsBasicCalculation()
- Specified by:
supportsBasicCalculation
in classBooleanExpression
- Returns:
- true if this expression can be calculated in plain Java, false otherwise
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getNumberOfExternalCalculations
protected int getNumberOfExternalCalculations()
- Specified by:
getNumberOfExternalCalculations
in classBooleanExpression
- Returns:
- the number of sub-expressions that have to be calculated using an external engine
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getExternalCalculationConditions
protected List<Object> getExternalCalculationConditions()
- Specified by:
getExternalCalculationConditions
in classBooleanExpression
- Returns:
- the sub-expressions that have to be calculated using an external engine
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needsAliases
public boolean needsAliases(Set<String> aliases)
- Specified by:
needsAliases
in classBooleanExpression
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copy
public IsNullCondition copy()
- Specified by:
copy
in classBooleanExpression
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extractSubQueries
public void extractSubQueries(SubQueryCollector collector)
- Specified by:
extractSubQueries
in classBooleanExpression
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refersToParent
public boolean refersToParent()
- Specified by:
refersToParent
in classBooleanExpression
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getMatchPatternInvolvedAliases
public List<String> getMatchPatternInvolvedAliases()
- Specified by:
getMatchPatternInvolvedAliases
in classBooleanExpression
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isCacheable
public boolean isCacheable()
- Specified by:
isCacheable
in classBooleanExpression
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